Freightliner Trucks Business Class Truck FL106

Warning: This procedure requires trained personnel with PPE!

Enter the air pressure in the system

Cleaned off road grime from the relay valve

Cleaned debris from the valve exhaust port

Checked for air leakage around the fittings or exhaust port

Tightened the fittings as necessary

Drain enough coolant from the radiator to expose the coolant level sensor

Disconnect wire 173 from the sensor in the radiator surge tank

Remove the sensor from the surge tank

Clean the sensor with a fine-grit sandpaper until the metal is exposed

Clean the tapped hole with a wire brush

Install the sensor (do not seal the sensor threads with tape)

Fill the cooling system to the proper level

Start the engine. The LOW WTR light and warning buzzer should be off

Warning: This procedure requires trained personnel with PPE!

Note: For off-highway operations, retorque the frame fasteners the first 1000 miles (1600 km), then periodically, depending on the operating conditions.

Caution: Continued vehicle operation with insufficiently tightened fasteners could result in bracket or frame damage.

Warning: Insufficient beam end fastener torque could cause the beam to separate from the axle, and result in loss of vehicle control.

Front frame brackets torqued correctly

Suspension brackets torqued correctly

Spring brackets torqued correctly

Fuel tank supports torqued correctly

Exhaust supports torqued correctly

Warning: This procedure requires trained personnel with PPE!

Rear engine-support fasteners checked for tightness

Tightness of the 3/4-inch fasteners (lbf·ft)

Front engine-support fasteners checked for tightness

Tightness of the 5/8-inch fasteners (lbf·ft)

NOTE: At engine overhaul, and whenever the engine has been removed, inspect the lower and upper isolators (Refs. 1 and 6), and replace them if they are worn. See Group 01 of the Business Class® Trucks Service Manual for procedures.

Lower and upper isolators inspected

Sign off on the engine-support fastener check

Lightly coat door weatherstrips with a lubricant that is safe (as recommended by the lubricant manufacturer) on rubber.

Apply a few drops of light engine oil, or spray a light coating of silicone lubricant (such as WD–40® or an equivalent) on the door latch mechanism. This will help reduce noise and wear. Wipe off any excess oil or silicone lubricant.

Lubricate door hinges by spraying them with a light coating of silicone lubricant (such as WD–40 or an equivalent).

Always lubricate new cab-door hinges at installation.;