Caterpillar Lift Truck GP25N

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

Apply a voltage of 12 V ON and OFF across terminal 3 and terminal 4

Does the relay activate to cause continuity between terminal 1 and terminal 2?

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) Check the belt for contamination with oil, grease and dust. Replace the belt if required. When the contamination is slight, remove it and clean with rag or wiping paper. Do not use gasoline, oil or any other solvent to clean the belt.

(2) During engine overhaul or belt tension adjustment, closely check the belt’s condition. Replace the belt with a new one if it has any sort of damage.

Apply a force of 98 N (10 kgf) [22 lbf] perpendicularly to the belt at a point midway between the fan pulley and tension pulley. Adjust the tension so that belt deflection becomes between 11 to 13 mm (0.43 to 0.51 in.).

When connecting the hoses to the radiator, fit their ends fully on the fittings and secure them with clamps. Make sure that each hose is correctly connected and prevented from disconnection by the flare of the fitting.

Fill the radiator with coolant containing antifreeze. Start and operate the engine to let it warm up while checking for abnormal noise. Make sure that the quantity of coolant is as specified by checking the level in the reserve tank.;

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

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.;