00-12 POWER TAKE OFF sides, if the dust or foreign matter is mixed in the hydrau- lic operating fluid, carefully handle it because it becomes the first cause of a dump mechanism fault. Work Procedure 1. With reference to the piping rough sketch on the preceding page, remove the low-pressure side hose of the oil pump and insert the port for removal in the prepared hydraulic operating fluid container. Notice: Be sure to install the hydraulic oil fluid container at a higher position than the tank pump.
If it is installed at a lower position, the oil pump may be damaged because the hydraulic operating fluid applied in Item (4) flows in the hydraulic operating fluid container and air is mixed in the hose. NPA0025E Legend 1. High-pressure hose 2. Test hose 3. Funnel 4. Low-pressure hose 5. Insert 6. To oil tank 7. Hydraulic operating fluid container 8. Hydraulic operating oil pump 9. PTO with oil pump 2. Remove the low-pressure side hose joint of the oil pump. 3. Install the test hose and connecting joint on the low-pressure side of the oil pump. Joint (low-pressure side): 5-8840-2439-0 Test hose: 5-8840-2435-0 4.
Use the funnel from the fluid container insertion side of the test hose to fill the hose with the hydrau- lic operating fluid and insert the hose port in the hy- draulic operating fluid container. NPA0024E Legend 1. Hoist cylinder 2. Oil tank 3. Low-pressure hose 4. Hydraulic operating fluid container 5. Hydraulic operating fluid 6. PTO with oil pump 7. High-pressure hose Notice: The test hose is filled with hydraulic operating fluid to minimize the mixture of air in the hydraulic circuit. Further, fix the two hoses inserted in the fluid container not to jump out from the hydraulic operating fluid. 5.
Start the engine and depress the clutch pedal in the idling state, then set the dump lever to the “Up” position. 6. When slowly releasing the clutch pedal and oper- ating the oil pump, the body (cargo deck) starts be- ing raised. Notice: When inserting the removed low-pressure hose in the hydraulic operating fluid, remove the hose band, be sure to clean the hose port, and handle the hose so that dust or foreign matter will not be mixed in the hydraulic oper- ating fluid. Notice: At this time, check that the air mixed in the hydraulic cir- cuit is discharged in the hydraulic operating fluid as blow holes.