
Turn manuals into instant answers
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Get instant access to all the maintenance information you need. Empower technicians to perform preventive maintenance with asset packages, ready to use right out of the box.
Find all the essential guides in one place.
Tensioning Guide
Belt-diagram
C-120 pulleys
+ 13 more
Pre-built workflows to keep your asset running smoothly.
Daily Electrical System Inspection
Replace Roller and Pulley
Install Engine B-120
+ 29 more
Integrate maintenance plans directly into your work orders.
Motion Industries
Applied Industrial Technologies
Electrical Brothers
+ 5 more
Access the parts list for your equipment in MaintainX.
Drive Motor
B2 Rollers
Tensioning System
+ 40 more

Clark Forklift C15D
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Integrate maintenance plans directly into your work orders in MaintainX.
Forklift Maintenance
Changing the LPG-tank
1. Close the shut-off valve of the LPG tank to be changed by turning the valve as far as possible clockwise. Let the engine run until it stops of its own accord. By doing this you will avoid the risk of liquefied gas spraying out from the hose (danger of frostbite) when you loosen the union.
2. Turn the ignition off.
3. Separate the hose from the LPG tank (left hand thread). Close the connection on the LPG-tank with the cap nut.
4. Slacken the strap holding the LPG tank and take away the empty LPG tank.
5. Replace the empty LPG tank with a full one. Check that the unions at the end of the hose and on the LPG tank are of the same type. Take care that you place the LPG tank in the correct position. The union for the hose must face downwards.
6. Secure the LPG tank strap and connect the hose.
7. Open the shut-off valve of the LPG tank slowly by turning it anticlockwise as far as it will go. Check the LPG system for tightness.
Extraordinary inspection of the LPG system
1 Weekly Forklift Maintenance
Warning: This maintenance check requires trained personnel with PPE!
Uprights raised to maximum height?
Hoist function fully operational?
Maintenance of the LPG system
Warning: LPG units may only be repaired and maintained by trained personnel.
LPG system checked for operational safety?
LPG system checked for leaks?
Check all that apply
Warning: Use of open flames, smoking and use of hot objects is strictly prohibited.
6 Monthly / 900 Hourly Forklift Maintenance
Clean or replace engine air filter (Diesel)
Replace hydraulic sump oil filter and hydraulic tank air breather
Exchange diaphragms, seals and valves in the LPG system
Check drive axle mounting and fasteners
Replace fuel filter element (GAS/LPG)
Check valve clearance and set if necessary (diesel engine)
Check that crankcase ventilation is free
Replace transmission oil GTS20-30, C40-80
Replace transmission oil filter C15-35, GTS20-30
1 Yearly / 1000 Hourly Forklift Maintenance
Maintaining LPG filter
• Every 1000 operational hours, or once annually, the filter elememts in the liquid gas preliminary filter and in the shut-off valve must be renewed, as well as diaphragms, seals and valves.
• After each maintenance, the cap screws of the evaporator pressure regulator must be tightened with a torque of 4.1±0.3 Nm.
• Check the LPG system after every repair or service to make sure that it is free of leaks.
Engine air cleaner • Check the engine air cleaner for damage and contamination (excessive dirt buildup and clogging). Be sure that the air cleaner hose is securely connected (not loose or leaking). Fan or cone shaped dust deposits on tube or hose surfaces indicate a leak.
• Change or service the air cleaner element every 2000 operating hours for LPG/Gas engine, every 1000 operating hours for Diesel engine depending upon your application.
• Service intervals may also be determined by the air restriction indicator.
• Clean the air filter housing thoroughly before fitting the filter.
• Do not open the air filter housing to check the filter element.
1 Daily Forklift Inspection
Visual Inspection: Any obvious signs of damage, leaks and dirt?
LPG system: Any leaks or damage?
Gas hoses: Any damage?
Wheels and tires: Any damage or loose wheel nuts?
Tire pressure: Checked from a position facing the tread of the tire?
Indicator lights: All functioning and indicating normal truck operation?
Engine cooling system: Coolant level checked directly in the radiator and at the overflow canister?
Service brake: Checked pedal play and operation of the brakes?
Inching function: Checked pedal play and operation?
MaintainX CoPilot is your expert colleague, on call 24/7, helping your team find the answers they need to keep equipment running.
Reduce Unplanned Downtime
Ensure your team follows consistent procedures to minimize equipment failures and costly delays.
Maximize Asset Availability
Keep your assets running longer and more reliably, with standardized maintenance workflows from OEM manuals.
Lower Maintenance Costs
Turn any technician into an expert to streamline operations, maintain more assets, and reduce overall costs.
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