Caterpillar Forklift GP18N

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

(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.

Measure the resistance value of the relay coil at terminal 3 and terminal 4

Is the measured resistance value within the standard resistance value?

Measure the insulation resistance value between terminal 1 and terminal 2

Is the measured insulation resistance value more than the value listed in the table?

Apply a tester to terminal 1 and terminal 2

Does the relay activate to cause continuity between terminal 1 and terminal 2 when applying a voltage of 12 V ON and OFF across terminal 3 and terminal 4?

Sign off on the glow relay inspection

Steering effort inspection after installation

Upload a photo of the spring scale attached to the steering wheel

Steering effort required to turn the steering wheel

Steering Valve Inspection after disassembly

Check for sliding movement in sub-assembly condition

Check sliding surfaces for defects

If any defect is found, replace the entire unit with a new one

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.;