CAT Forklift GP20N

(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.

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

Control Valve Assembly Inspection after Disassembly

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

(1) Check that all moving and sliding contact parts move smoothly.

(2) Check for clogged orifices.

(3) Replace springs if they are broken or bent. Measure the free length of springs.;

The following parts should be periodically changed as noted below.

These parts are made of materials which will deteriorate overtime. Further, it is difficult to determine visually whether or not they are still in good condition. Changing at proper intervals will reduce the risk of injury to the operator and damage to the truck.

4000 service hours or 2 years, whichever comes first:

• Rubber parts of power cylinder

• Hydraulic hoses of steering system

4000 to 8000 service hours or 2 to 4 years, whichever comes first:

(1) With the clearance A between the lining and drum set approximately to specification, pull the cable with spring with a finger as shown. The lever should turn the adjusting screw wheel by one notch and, when the cable is released, return to the original position.

(2) If the lever fails, or is slow, to turn the adjusting screw wheel, check the position of the lever relative to the toothed wheel. The lever’s actuating tip should touch the toothed wheel at approximately 7 to 9 mm (0.28 to 0.35 in.) below the centerline of the screw. If the lever contact is out of the range, the lever will not correctly engage with the toothed wheel, therefore failing or slow to turn the wheel.

(3) If the automatic adjuster fails to operate correctly, take the following actions.

(a) Ensure that the adjusting spring is correctly hooked to the primary shoe.

(d) Replace the adjusting screw.