4. DISASSEMBLY AND ASSEMBLY 4. DISASSEMBLY AND ASSEMBLY 1) 1) GENERAL PRECAUTIONS GENERAL PRECAUTIONS (1) (1) Disassembly Disassembly Before disassembling the motor, check the items to be inspected and, for remedy against trouble, closely examine the nature of the trouble, so that the motor can be disassembled effectively. To disassemble the motor, use the disassembling procedures described in section 2) and select a clean place. Place a rubber or vinyl sheet or other such protective materials on your working bench to protect the surface of the motor to be serviced. During disassembly, give a match mark to the mating surfaces of each part.
Arrange removed parts in order so that they will not become damaged or missing during disassembly. Once seals have been disassembled, they should be replaced even if damage is not observed. Have replacement seals ready on hand before starting your disassembling job. ① ② ③ ④ ⑤ ⑥ (2) (2) Assembly Assembly Reassemble in a work area that is clean and free from dust and grit. Handle parts with bare hands to keep them free of linty contaminants. Repair or replace the damaged parts. Each parts must be free of burrs its corners. Do not reuse O-ring oil seal and floating seal that were removed in disassembly. Provide the new parts. Wash all parts thoroughly in a suitable solvent.
Dry thoroughly with compressed air. Do not use the cloths. When reassembling oil motor components of motor, be sure to coat the sliding parts of the motor and valve with fresh hydraulic oil. (NAS class 9 or above) Use a torque wrench to tighten bolts and plugs, to the torque specified as follows. ① ② ③ ④ ⑤ ⑥ ⑦ 7-33