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Mack | Mack TerraProTM MRU Series - Pre-Trip Inspection and Daily Maintenance

Use this checklist for the pre-trip inspection and daily maintenance of your Mack truck. Performing regular maintenance on your equipment has been proven to reduce repair costs for trucks and to avoid unnecessary damages.
MaintainX
12/28/2022

Mack | Mack TerraProTM MRU Series - Pre-Trip Inspection and Daily Maintenance

Use this checklist for the pre-trip inspection and daily maintenance of your Mack truck. Performing regular maintenance on your equipment has been proven to reduce repair costs for trucks and to avoid unnecessary damages.

    DANGER: Before working on or inspecting a vehicle, set the parking brakes, place the transmission in neutral and block the wheels. Failure to do so can result in unexpected vehicle movement and can cause serious personal injury or death.

      Safety is the most important and obvious reason for doing a pre-trip inspection. Federal and state laws require inspection performed by the driver. Federal and state inspectors also inspect commercial vehicles. An unsafe vehicle can be placed "out of service" until the driver or owner corrects the deficiency. Owners and operators should familiarize themselves with sections 49 CFR 396.11 and 396.13 concerning Federal requirements for vehicle inspection. Certain other laws may also apply.

        Section 49 CFR 396.13 states that all motor carrier drivers must complete a written report at the end of each work day for each vehicle operated, covering most of what is covered in the pre-trip list. The report should list all defects or deficiencies discovered by the driver. A pre-trip inspection prepares for the end-of-work report.

          Starting on the next page are suggested guidelines to be used in performing truck, tractor and trailer pre-trip inspections. Depending on the application of the vehicle being used, these guidelines should be modified to include other necessary inspection points. For example, steps and grab handles should be checked daily on refuse trucks because the operator is getting in and out of the cab more frequently.

            If any component or system does not pass this inspection, it must be corrected before operating the vehicle. Whenever equipment requires adjustment, replacement, repair or lubrication, refer to the Service Manuals or contact an authorized Mack Truck dealer for the correct procedures, specifications and intervals.

              Take your time going through the pre-trip inspection. Remember that a careful pre-trip inspection saves time by eliminating unscheduled stops for correcting a faulty item.

                The following information has been provided by the American Trucking Association as developed by the D.O.T. Office of Motor Carriers (BMCS).

                  Pre-Trip Inspection Quick List

                  Inspect the vehicle in a circular manner.

                    Approaching the Vehicle

                    Check under the vehicle for oil, fuel, coolant leaks or other signs of damage.

                    • Pass
                    • Flag
                    • Fail

                    Check body surfaces for signs of breaks or damage.

                    • Pass
                    • Flag
                    • Fail

                    Preparation

                    Open drain cocks on air tanks to let the tanks drain.

                    • Pass
                    • Flag
                    • Fail

                    Chock wheels on vehicle and, if hooked up, trailer.

                    • Pass
                    • Flag
                    • Fail

                    Close air tank drain cocks.

                    • Pass
                    • Flag
                    • Fail

                    Start the engine and let the air pressure build up to normal. Stop engine.

                    • Pass
                    • Flag
                    • Fail

                    Switch on parking lights and hazard lights.

                    • Pass
                    • Flag
                    • Fail

                    Apply parking brakes.

                    • Pass
                    • Flag
                    • Fail

                    Pull the hood release lever or release the hood latches, raise hood.

                    • Pass
                    • Flag
                    • Fail

                    Step 1: Left Side of the Cab

                    Left Front Wheel

                    Check condition of wheel rim. Especially look for cracks, missing lockrings, bent or broken studs, clamps or lugs.

                    • Pass
                    • Flag
                    • Fail

                    Check condition of tire: properly inflated, no serious cuts, bulges, tread wear or any signs of misalignment; valve stem not touching wheel, rim or brake drum; valve cap in place.

                    • Pass
                    • Flag
                    • Fail

                    Check wheel bearing and hub: no obvious leaking on outside or inside wheel. Verify correct oil level in hub.

                    • Pass
                    • Flag
                    • Fail

                    Left Front Suspension

                    Check condition of spring, spring hangers, shackles, U-bolts: no cracks, breaks or shifting.

                    • Pass
                    • Flag
                    • Fail

                    Check shock absorber condition.

                    • Pass
                    • Flag
                    • Fail

                    Left Front Brake

                    Condition of brake drum. With brakes released, look for a noticeable gap between lining and drum. (This check cannot be made if dust covers are in place.)

                    • Pass
                    • Flag
                    • Fail

                    Condition of brake air hose.

                    • Pass
                    • Flag
                    • Fail

                    Check brake chamber mounting bolts and bracket.

                    • Pass
                    • Flag
                    • Fail

                    Condition of Front Axle and Steering System, Left Side

                    No loose, worn, bent, damaged or missing parts.

                    • Pass
                    • Flag
                    • Fail

                    Under Hood, Left Side

                    Check coolant hose condition.

                    • Pass
                    • Flag
                    • Fail

                    Check condition of fan drive belts.

                    • Pass
                    • Flag
                    • Fail

                    Check engine and surrounding areas for coolant, oil and fuel leaks.

                    • Pass
                    • Flag
                    • Fail

                    Check wiring harnesses for signs of damage.

                    • Pass
                    • Flag
                    • Fail

                    Step 2: Front of Cab Area

                    Condition of Windshield

                    Check for damage and clean if dirty.

                    • Pass
                    • Flag
                    • Fail

                    Check windshield wiper arms for proper spring tension.

                    • Pass
                    • Flag
                    • Fail

                    Check wiper blades for any damage, "dead" rubber and attachment to arm.

                    • Pass
                    • Flag
                    • Fail

                    Lights and Reflectors

                    Lower hood and inspect parking, clearance and identification lights on hood and cab. They should be clean and of the proper color.

                    • Pass
                    • Flag
                    • Fail

                    Reflectors clean and proper color.

                    • Pass
                    • Flag
                    • Fail

                    Left and right front turn signal lights and headlights clean and proper color. Raise hood.

                    • Pass
                    • Flag
                    • Fail

                    Grille

                    Check that charge air cooler and radiator or bugscreens are clean and undamaged.

                    • Pass
                    • Flag
                    • Fail

                    Step 3: Right Side of Cab Area

                    Right Front Wheel

                    Check condition of wheel rim. Especially look for cracks, missing lockrings, bent or broken studs, clamps or lugs.

                    • Pass
                    • Flag
                    • Fail

                    Check condition of tire: properly inflated, no serious cuts, bulges, tread wear or any signs of misalignment; valve stem not touching wheel, rim or brake drum; valve cap in place.

                    • Pass
                    • Flag
                    • Fail

                    Check wheel bearing and hub: no obvious leaking on outside or inside wheel. Verify correct oil level in hub.

                    • Pass
                    • Flag
                    • Fail

                    Right Front Suspension

                    Check condition of spring, spring hangers, shackles, U-bolts: no cracks, breaks or shifting.

                    • Pass
                    • Flag
                    • Fail

                    Shock absorber condition.

                    • Pass
                    • Flag
                    • Fail

                    Right Front Brake

                    Condition of brake drum. With brakes released, look for a noticeable gap between lining and drum. (This check cannot be made if dust covers are in place.)

                    • Pass
                    • Flag
                    • Fail

                    Condition of brake air hose: check for any chafing.

                    • Pass
                    • Flag
                    • Fail

                    Check brake chamber mounting bolts and bracket.

                    • Pass
                    • Flag
                    • Fail

                    With brakes applied or released, look for conspicuously different positions of the slack adjusters.

                    • Pass
                    • Flag
                    • Fail

                    Condition of Front Axle and Steering System, Right Side

                    No loose, worn, bent, damaged or missing parts.

                    • Pass
                    • Flag
                    • Fail

                    Under Hood, Right Side

                    Check condition of coolant and heater hoses.

                    • Pass
                    • Flag
                    • Fail

                    Check condition of fan drive belts.

                    • Pass
                    • Flag
                    • Fail

                    Check engine and surrounding areas for coolant, oil and fuel leaks.

                    • Pass
                    • Flag
                    • Fail

                    Check fuel separator sight glass and drain if necessary. Check for leaks.

                    • Pass
                    • Flag
                    • Fail

                    Check wiring harnesses for signs of damage.

                    • Pass
                    • Flag
                    • Fail

                    Check air filter with brackets and hoses for loose connections or damage. Check filter gauge, if mounted on the filter.

                    • Pass
                    • Flag
                    • Fail

                    Step 4: Right Saddle Tank Area

                    Right Fuel Tank(s)

                    Securely mounted and not damaged or leaking.

                    • Pass
                    • Flag
                    • Fail

                    Fuel lines secure and not leaking. Check that shut-off valves are open.

                    • Pass
                    • Flag
                    • Fail

                    Tank(s) full of fuel. Cap on and secure.

                    • Pass
                    • Flag
                    • Fail

                    Condition of Visible Components

                    Rear of engine: not leaking.

                    • Pass
                    • Flag
                    • Fail

                    Transmission: not leaking. If equipped with oil cooler, check cooler, hoses and fittings for leaks.

                    • Pass
                    • Flag
                    • Fail

                    Check drive shaft.

                    • Pass
                    • Flag
                    • Fail

                    Exhaust system: secure, not leaking, not touching wires, fuel or air tubing.

                    • Pass
                    • Flag
                    • Fail

                    Frame and cross members: no bends, cracks or breaks.

                    • Pass
                    • Flag
                    • Fail

                    Air tubing and electrical wiring: secured against snagging and chafing.

                    • Pass
                    • Flag
                    • Fail

                    Step 5: Right Rear Vehicle Area

                    Dual Wheels, One or Two Axles

                    Check condition of wheels and rims. Especially look for cracks, missing lockrings, bent or broken spacers, studs, clamps or lugs.

                    • Pass
                    • Flag
                    • Fail

                    Check condition of tires: properly inflated, no serious cuts, bulges, tread wear or any signs of misalignment; valve stems not touching wheels, rims or brake drums; valve caps in place and no objects stuck between the wheels.

                    • Pass
                    • Flag
                    • Fail

                    Check that both tires are of same type, for example, not mixed radial and bias type and that their circumferences are matched.

                    • Pass
                    • Flag
                    • Fail

                    Check wheel bearing and hub: no obvious leaking on outside or inside wheel.

                    • Pass
                    • Flag
                    • Fail

                    Suspension

                    Check condition of springs (leaf or air), spring hangers, shackles and U-bolts.

                    • Pass
                    • Flag
                    • Fail

                    Axle alignment.

                    • Pass
                    • Flag
                    • Fail

                    Brakes

                    Condition of brake drums. With brakes released, look for a noticeable gap between lining and drum. (This check cannot be made if dust covers are in place.)

                    • Pass
                    • Flag
                    • Fail

                    Condition of brake hoses: check for any chafing.

                    • Pass
                    • Flag
                    • Fail

                    Check brake chamber mounting bolts and brackets.

                    • Pass
                    • Flag
                    • Fail

                    With brakes applied or released, look for conspicuously different positions of the slack adjusters.

                    • Pass
                    • Flag
                    • Fail

                    Step 6: Rear of Vehicle Area

                    Frame Area

                    Frame or cross members not bent, cracked or otherwise damaged or missing.

                    • Pass
                    • Flag
                    • Fail

                    Check that air tubing and electrical lines are properly secured to the frame with no damage or chafing.

                    • Pass
                    • Flag
                    • Fail

                    Lights and Reflectors

                    Tail lights, brake lights and turn signal lights: clean and proper color.

                    • Pass
                    • Flag
                    • Fail

                    Step 7: Coupling System Area

                    Fifth Wheel

                    Securely mounted to the frame.

                    • Pass
                    • Flag
                    • Fail

                    No missing or damaged parts.

                    • Pass
                    • Flag
                    • Fail

                    Check that trunnion and plate are properly lubricated.

                    • Pass
                    • Flag
                    • Fail

                    Sliding Fifth Wheel

                    Mechanism not worn, bent, damaged or parts missing.

                    • Pass
                    • Flag
                    • Fail

                    Properly lubricated.

                    • Pass
                    • Flag
                    • Fail

                    All locking pins present and locked in place.

                    • Pass
                    • Flag
                    • Fail

                    If air operated: no air leaks.

                    • Pass
                    • Flag
                    • Fail

                    Air Tubing and Electric Lines Visible From This Point

                    Should be secure from dangling.

                    • Pass
                    • Flag
                    • Fail

                    Both air lines and electric line should be free from damage, oil and grease.

                    • Pass
                    • Flag
                    • Fail

                    Step 8: Left Saddle Tank and Left Rear Vehicle Wheels Area

                    Dual Wheels, One or Two Axles

                    Check condition of wheels and rims. Especially look for cracks, missing lockrings, bent or broken spacers, studs, clamps or lugs.

                    • Pass
                    • Flag
                    • Fail

                    Check condition of tires: properly inflated, no serious cuts, bulges, tread wear or any signs of misalignment; valve stems not touching wheels, rims or brake drums; valve caps in place and no objects stuck between the wheels.

                    • Pass
                    • Flag
                    • Fail

                    Check that both tires are of same type, for example, not mixed radial and bias type and that their circumferences are matched.

                    • Pass
                    • Flag
                    • Fail

                    Check wheel bearing and hub: no obvious leaking on outside or inside wheel.

                    • Pass
                    • Flag
                    • Fail

                    Suspension

                    Check condition of springs (leaf or air), spring hangers, shackles and U-bolts, no cracks, breaks or shifting.

                    • Pass
                    • Flag
                    • Fail

                    Brakes

                    Condition of brake drums. With brakes released, look for a noticeable gap between lining and drum. (This check cannot be made if dust covers are in place.)

                    • Pass
                    • Flag
                    • Fail

                    Condition of brake hoses: check for any chafing.

                    • Pass
                    • Flag
                    • Fail

                    Check brake chamber mounting bolts and brackets.

                    • Pass
                    • Flag
                    • Fail

                    With brakes applied or released, look for conspicuously different positions of the slack adjusters.

                    • Pass
                    • Flag
                    • Fail

                    Condition of Visible Components

                    Transmission: not leaking.

                    • Pass
                    • Flag
                    • Fail

                    Drive shaft: looks OK.

                    • Pass
                    • Flag
                    • Fail

                    Exhaust system: secure, not leaking, not touching wires, fuel or air tubing.

                    • Pass
                    • Flag
                    • Fail

                    Frame and cross members: no bends, cracks or breaks.

                    • Pass
                    • Flag
                    • Fail

                    Air tubing and electrical wiring: secured against snagging and chafing.

                    • Pass
                    • Flag
                    • Fail

                    Left Fuel Tank(s)

                    Securely mounted and not damaged or leaking.

                    • Pass
                    • Flag
                    • Fail

                    Fuel lines secure and not leaking. Check that shut-off valves are open.

                    • Pass
                    • Flag
                    • Fail

                    Tank(s) full of fuel. Cap on and secure.

                    • Pass
                    • Flag
                    • Fail

                    Battery Area

                    Open the battery box. Battery box securely mounted to vehicle.

                    • Pass
                    • Flag
                    • Fail

                    Batteries secured against movement.

                    • Pass
                    • Flag
                    • Fail

                    Battery cases not broken or leaking. Battery cables free from damage.

                    • Pass
                    • Flag
                    • Fail

                    Tops of batteries and terminals clean and free from foreign material.

                    • Pass
                    • Flag
                    • Fail

                    If equipped, replace battery lid and make sure it is securely fastened.

                    • Pass
                    • Flag
                    • Fail

                    Step 9: Trailer Front Area

                    Air and Electrical Connections

                    Glad hands properly mounted, free from damage and not leaking.

                    • Pass
                    • Flag
                    • Fail

                    Trailer cord receptacle properly mounted, free of damage; plug properly seated and safety catch engaged to prevent accidental disconnect.

                    • Pass
                    • Flag
                    • Fail

                    Air and electrical lines properly secured against tangling, snagging and chafing with sufficient slack for turns.

                    • Pass
                    • Flag
                    • Fail

                    Hooking Up To Trailer

                    Hook-Up Preparation

                    Check kingpin and mounting plate on trailer, free from wear, bends or damage.

                    • Pass
                    • Flag
                    • Fail

                    Chock trailer wheels.

                    • Pass
                    • Flag
                    • Fail

                    Fifth Wheel or Trailer Hitch

                    No visible space between fifth wheel and trailer.

                    • Pass
                    • Flag
                    • Fail

                    Locking jaws around the shank and not the head of kingpin.

                    • Pass
                    • Flag
                    • Fail

                    Release lever properly seated and safety latch/lock engaged.

                    • Pass
                    • Flag
                    • Fail

                    Check all connections to dolly or trailer hitch and safety chains are secured.

                    • Pass
                    • Flag
                    • Fail

                    Check function of trailer air supply valve and trailer brakes.

                    • Pass
                    • Flag
                    • Fail

                    Sliding Fifth Wheel

                    Check that fifth wheel is not so far forward that the tractor frame will strike the landing gear during turns.

                    • Pass
                    • Flag
                    • Fail

                    Note: Refer to the trailer manufacturer’s manual for specific information on the trailer checks.

                      Step 10: Right Side of Trailer Area

                      Landing Gear or Dolly Area

                      Fully raised; no missing or damaged parts.

                      • Pass
                      • Flag
                      • Fail

                      Crank handle present and secured.

                      • Pass
                      • Flag
                      • Fail

                      If power operated, no air/hydraulic leaks.

                      • Pass
                      • Flag
                      • Fail

                      Spare Wheel(s)

                      Carrier or rack not damaged.

                      • Pass
                      • Flag
                      • Fail

                      Spare wheel securely mounted in rack.

                      • Pass
                      • Flag
                      • Fail

                      Tire and wheel condition adequate for a spare: proper size, properly inflated.

                      • Pass
                      • Flag
                      • Fail

                      Lights and Reflectors

                      Trailer side clearance lights: clean, operating and proper color.

                      • Pass
                      • Flag
                      • Fail

                      Reflectors clean and proper color.

                      • Pass
                      • Flag
                      • Fail

                      Frame and Body

                      Frame and crossmembers not bent, cracked, damaged or missing.

                      • Pass
                      • Flag
                      • Fail

                      Proper placarding.

                      • Pass
                      • Flag
                      • Fail

                      Body parts not damaged or missing.

                      • Pass
                      • Flag
                      • Fail

                      Step 11: Right Rear Trailer Wheel

                      Dual Wheels, One or Two Axles

                      Check condition of wheels and rims. Especially look for cracks, missing lockrings, bent or broken spacers, studs, clamps or lugs.

                      • Pass
                      • Flag
                      • Fail

                      Check condition of tires: properly inflated, no serious cuts, bulges, tread wear or any signs of misalignment; valve stems not touching wheels, rims or brake drums; valve caps in place and no objects stuck between the wheels.

                      • Pass
                      • Flag
                      • Fail

                      Check that both tires are of same type, for example, not mixed radial and bias type and that their circumferences are matched.

                      • Pass
                      • Flag
                      • Fail

                      Check wheel bearing and hub: no obvious leaking on outside or inside wheel.

                      • Pass
                      • Flag
                      • Fail

                      Suspension

                      Condition of springs (leaf or air), spring hangers, shackles and U-bolts.

                      • Pass
                      • Flag
                      • Fail

                      Axle alignment.

                      • Pass
                      • Flag
                      • Fail

                      Condition of torque rod arms.

                      • Pass
                      • Flag
                      • Fail

                      If equipped with sliding axles, check position and alignment. Look for damaged, worn or missing parts, all locks present, fully in place and locked.

                      • Pass
                      • Flag
                      • Fail

                      Flexible air tubing not cracked, cut, crimped or otherwise damaged. Secured against tangling, dragging and chafing.

                      • Pass
                      • Flag
                      • Fail

                      Brakes

                      Condition of brake drums. With brakes released, look for a noticeable gap between lining and drum. (This check cannot be made if dust covers are in place.)

                      • Pass
                      • Flag
                      • Fail

                      Condition of brake hoses: check for any chafing.

                      • Pass
                      • Flag
                      • Fail

                      Check brake chamber mounting bolts and brackets.

                      • Pass
                      • Flag
                      • Fail

                      With brakes applied or released, look for conspicuously different positions of the slack adjusters.

                      • Pass
                      • Flag
                      • Fail

                      Step 12: Rear of Trailer Area

                      Lights and Reflectors

                      Rear clearance, identification and tail lights clean and proper color.

                      • Pass
                      • Flag
                      • Fail

                      Reflectors clean and proper color.

                      • Pass
                      • Flag
                      • Fail

                      Cargo Securement

                      Cargo properly blocked, braced, tied, chained, etc.

                      • Pass
                      • Flag
                      • Fail

                      Tailboard up and properly secured. End gates free from damage, properly secured in stake pockets.

                      • Pass
                      • Flag
                      • Fail

                      Canvas or tarp (if required) properly latched down to prevent water damage, tearing, billowing or blockage of either mirrors or tail lights.

                      • Pass
                      • Flag
                      • Fail

                      Rear doors securely closed, latched or locked; required security seals in place.

                      • Pass
                      • Flag
                      • Fail

                      Underside guard in place: not cracked, bent or broken.

                      • Pass
                      • Flag
                      • Fail

                      Step 13: Left Rear Trailer Wheels Area

                      Dual Wheels, One or Two Axles

                      Check condition of wheels and rims. Especially look for cracks, lockrings missing, bent or broken spacers, studs, clamps or lugs.

                      • Pass
                      • Flag
                      • Fail

                      Check condition of tires: properly inflated, no serious cuts, bulges, tread wear or any signs of misalignment; valve stems not touching wheels, rims or brake drums; valve caps in place and no objects stuck between the wheels.

                      • Pass
                      • Flag
                      • Fail

                      Check that both tires are of same type, for example, not mixed radial and bias type and that their circumferences are matched.

                      • Pass
                      • Flag
                      • Fail

                      Check wheel bearing and hub: no obvious leaking on outside or inside wheel.

                      • Pass
                      • Flag
                      • Fail

                      Suspension

                      Condition of springs (leaf or air), spring hangers, shackles and U-bolts.

                      • Pass
                      • Flag
                      • Fail

                      Axle alignment.

                      • Pass
                      • Flag
                      • Fail

                      Condition of torque rod arms.

                      • Pass
                      • Flag
                      • Fail

                      If equipped with sliding axles, check position and alignment. Look for damaged, worn or missing parts, all locks present, fully in place and locked.

                      • Pass
                      • Flag
                      • Fail

                      Flexible air tubing not cracked, cut, crimped or otherwise damaged. It should be secured against tangling, dragging and chafing.

                      • Pass
                      • Flag
                      • Fail

                      Brakes

                      Condition of brake drums. With brakes released, look for a noticeable gap between lining and drum. (This check can not be made if dust covers are in place.)

                      • Pass
                      • Flag
                      • Fail

                      Condition of brake hoses: check for any chafing.

                      • Pass
                      • Flag
                      • Fail

                      Check brake chamber mounting bolts and brackets.

                      • Pass
                      • Flag
                      • Fail

                      With brakes applied or released, look for conspicuously different positions of the slack adjusters.

                      • Pass
                      • Flag
                      • Fail

                      Step 14: Left Side of Trailer Area

                      Landing Gear or Dolly Area

                      Fully raised; no missing or damaged parts.

                      • Pass
                      • Flag
                      • Fail

                      Crank handle present and secured.

                      • Pass
                      • Flag
                      • Fail

                      If power operated, no air/hydraulic leaks.

                      • Pass
                      • Flag
                      • Fail

                      Spare Wheel(s)

                      Spare wheel securely mounted in rack with no damage to rack.

                      • Pass
                      • Flag
                      • Fail

                      Tire and wheel condition adequate for a spare: proper size, properly inflated.

                      • Pass
                      • Flag
                      • Fail

                      Lights and Reflectors

                      Trailer side clearance lights: clean, operating and proper color.

                      • Pass
                      • Flag
                      • Fail

                      Reflectors clean and proper color.

                      • Pass
                      • Flag
                      • Fail

                      Frame and Body

                      Frame and crossmembers not bent, cracked, damaged or missing.

                      • Pass
                      • Flag
                      • Fail

                      Proper placarding.

                      • Pass
                      • Flag
                      • Fail

                      Body parts not damaged or missing.

                      • Pass
                      • Flag
                      • Fail

                      Step 15: In the Cab

                      Check steps and grab handles for looseness or breakage. Also, clean them if there is any substance that makes them slippery, which makes cab entry/exit hazardous.

                      • Pass
                      • Flag
                      • Fail

                      Start the engine. If equipped, check that exhaust rain cap opens when accelerating engine.

                      • Pass
                      • Flag
                      • Fail

                      Check gauges and tell-tale light function. See the Instruments and Controls section.

                      • Pass
                      • Flag
                      • Fail

                      Check headlights, tail lights, brake lights, emergency flashers and turn signal lights for proper operation, cleanliness and proper color.

                      • Pass
                      • Flag
                      • Fail

                      Check function of low air warning.

                      • Pass
                      • Flag
                      • Fail

                      Check clutch function. If equipped, check for clutch brake function.

                      • Pass
                      • Flag
                      • Fail

                      Check windshield wipers and washers and horns, including back-up alarm, if equipped.

                      • Pass
                      • Flag
                      • Fail

                      Clean inside windshield, door windows and instruments. Clean mirrors.

                      • Pass
                      • Flag
                      • Fail

                      Check temperature control and defroster. If equipped, check mirror heater.

                      • Pass
                      • Flag
                      • Fail

                      Check condition of warning triangles, fire extinguisher and flares.

                      • Pass
                      • Flag
                      • Fail

                      Adjust the seat. Check mirror adjustment.

                      • Pass
                      • Flag
                      • Fail

                      Check safety belts for function and damage.

                      • Pass
                      • Flag
                      • Fail

                      Apply service brakes. After initial drop, pressure should hold steady, or increase slightly, with engine at idle.

                      • Pass
                      • Flag
                      • Fail

                      Check slack adjusters and chamber pushrod travel.

                      • Pass
                      • Flag
                      • Fail

                      Check steering wheel for excessive free play.

                      • Pass
                      • Flag
                      • Fail

                      Check for loose items in the cab. Secure them if necessary.

                      • Pass
                      • Flag
                      • Fail

                      Step 16: Before Leaving the Parking Area

                      Remove chocks from the wheels.

                      • Pass
                      • Flag
                      • Fail

                      Test trailer hook-up by slowly pulling while applying the trailer brakes with the trailer brake hand control valve.

                      • Pass
                      • Flag
                      • Fail

                      Test the service brakes before leaving the parking area.

                      • Pass
                      • Flag
                      • Fail

                      Test parking brakes by stopping on a 20% grade and applying the parking brakes. The parking brakes shall hold the combined vehicle and trailer without moving.

                      • Pass
                      • Flag
                      • Fail
                    Source: MaintainX (Community Member)

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