Caterpillar Forklift DP18N

Apply a tester to terminal 1 and terminal 2 and measure the resistance value of the relay coil. Replace the coil with a new one if there is no continuity or the resistance value measured is outside the standard resistance value.

1. Measure the insulation resistance value between terminal 3 and terminal 4. Replace the contact with a new one if the measured insulation resistance value is not more than the value listed in the table below.

2. Apply the tester to terminal 3 and terminal 4.

3. When applying a voltage of 12 V ON and OFF across terminal 1 and terminal 2 under the above condition, check to see if the relay activates to cause continuity or not between terminal 3 and terminal 4. Replace the relay with a new one if it does not activate properly.

CAUTION: This part operates on DC 12 V (Gasoline/Dieselengine truck) power supply.

CAUTION: As the relay has an integrated diode between terminals, be careful about the polarity when inspecting. Replace the relay with a new one if an impact is given to it or if it is dropped.;

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?

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

Hours battery left for high current discharge test

Specific gravity reading and state of charge

(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.;

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

Steering Valve Inspection after disassembly

Check for sliding movement in sub-assembly condition

Check sliding surfaces for defects

If any defect found, replace the unit

Inspection of output time when starter switch is turned to ON

When a tester is applied to terminal 2 and terminal 1 and a voltage of 12 V is applied between terminal 3 and terminal 1, there is continuity between terminal 2 and terminal 1 for 15 seconds at room temperature. Replace the glow timer with a new one if it does not operate properly.

Inspection of output time when starter switch is turned to START

When a tester is applied to terminal 2 and terminal 1 and a voltage of 12 V is applied between terminal 4 and terminal 1, there is continuity between terminal 2 and terminal 1 for 5 seconds. Replace the glow timer with a new one if it does not operate properly.;