Caterpillar Forklift GP20CN

Inspection after Installation Steering effort

(1) Pull the hand brake lever.

(2) Run the engine to warm the hydraulic oil to an operation temperature of 40 to 60 °C (104 to 140 °F)

(3) Attach a spring scale to the rim (or a spoke) of the steering wheel, and measure the steering effort required to turn the steering wheel clockwise or counterclockwise from the straight-ahead position.

Steering Valve Inspection after disassembly

(1) Check sliding areas between the sleeve and the housing and between the sleeve and the spool.

(a) Check for sliding movement in sub-assembly condition.

(b) If any defective movement is found, check sliding surfaces.

If any defect such as abnormal wear, scratch, burr or rust is found, replace the entire unit with a new one.;

(1) Transmission oil level check

(a) Check the transmission fluid level with the level gauge.

(b) Start and run the engine at an idling speed for about 3 minutes, and then stop the engine.

(c) Wait for about 30 seconds after stopping the engine, and check the level.

(d) The checking procedure must be completed within 5 minutes after the engine has stopped.

(a) Warm up the engine to raise the temperature of the transmission oil.

Difference in S.G. between any two cells is 0.020 or more?

Faulty components, loosely connected cord or corroded connection present?

Voltage and S.G. stabilize and have remained constant for more than 2 hours?

S.G. is between 1.280 to 1.265?

Difference in S.G. is more than 0.040 and a low S.G. is found in certain cells only?

Specific gravity reading and state of charge

Hydraulic Pump Inspection and Repair

(1) Check the gear teeth for wear, chipping or other defects.

(2) Check the side faces of the gears for wear or damage.

(3) Check the shafts for wear or damage.

Check these parts for wear or damage.

1. Second cylinder for simplex mast and triplex mast Inspection after disassembly

Check valves for burrs, scratches, dents and other surface defects

Check that all moving and sliding contact parts move smoothly

Are any springs broken or bent?

Measure the free length of springs

Upload a photo of the inspected valve

Sign off on the valve inspection