Komatsu Forklift Trucks FG20STUS-14

32.1 REPLACING FUSES AND RELAYS 32.1.1 CHASSIS FUSES (ALL TRUCKS) NOTICE:

• When replacing the fuses, always turn OFF the electric power first (turn the starting switch to the OFF position).

• Always replace the fuses with a fuse of the same capacity.

The CHASSIS fuses are used to protect the electrical components and wiring from burning out and are located in a fusebox located to the left of the steering column and below the dashboard panel of dials and gauges.

1. Turn the starting switch to the OFF position.

2. Open the cover of the fuse box and replace necessary fuses inside. To remove the cover from the fuse box, push the side face of the cover lightly with your fingers and pull it out.

The fuse number in the tables below correspond from right to left in the illustration. Check the relationship between the fuses and the electrical components when replacing.

K21 AND K25 ENGINES ONLY (BX GAS AND LP TRUCKS)

Check wheel rims for deformation, cracking and damage

Check wheel bearings for play and abnormal noise

Check hydraulic cylinders for looseness, deformation, cracking, damage and wear

Check all piping/tubing/connectors for oil leakage, deformation or damage

Check operation of hydraulic cylinders

Check hydraulic drift of lift cylinder

Check hydraulic drift of tilt cylinders

Check movement of work equipment control lever(s)

Check forks and fork stopper for deformation, cracking, damage and wear

Drain plug removed and oil drained

Amount of Komatsu Forklift engine oil added

Oil level checked with dipstick

Oil filter cartridge removed with filter wrench

Filter holder on the engine cleaned

Threads on the holder and seal on the new filter coated with clean engine oil

Clean the “bronze mesh” LPG filter every 600 hours of operation or every 3 months of service, whichever comes first.

Replace the filter element every 2,400 hours of operation or every 12 months, whichever comes first.

In dusty operating conditions, carry out maintenance as often as possible.

1. Carefully remove the LPG filter (8) from the filter cover (10) located on the lower portion of the LPG Solenoid Valve. Use care not to damage the O-ring (9).

2. Clean bronze mesh filter with suitable cleaning solvent.

3. While wearing eye protection, blow out and dry the filter.

4. Reinstall the cleaned filter. Ensure that the O-ring is properly seated and gently tighten cover screws

Inspect PCV valve and hoses (gasoline engine)

CAUTION: If water gets into the electrical system (controller, sensor, connectors, etc.) it will cause malfunctions or operational failure. Do not wash the electrical system with water or high-pressure steam.

1. Turn the starting switch key to the OFF position, then remove the key.

2. Wash each part (1 to 4 parts in the figure at right), following the instructions in the table on the following page.

3. Dry off all wet areas with an air blower.

4. After checking that the washed parts have dried out, insert the starting switch key and turn it to the ON position, make sure that there is no abnormality, and then start operation.;