Hydraulic Motor Rebuild
Hydraulic Motor Rebuild
(Figure 5)
Removal | Installation | |||||||||||
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1Relieve pressure, page 7.
2Place drip pan or rags under sprayer to catch hydraulic oil that leaks out during repair.
3GH130 Models:
- Follow Steps
GH200, GH230, GH300 Models:
- Follow Steps
4Remove hydraulic lines (271, 288) from fittings (266) at top left and right side of hydraulic motor.
5Loosen jam nut (264).
6Unscrew and remove hydraulic motor cap (265).
7Slide piston rod/hydraulic motor cap assembly (A) from hydraulic motor cylinder (263).
FLYING PARTS HAZARD
Detent spring has high energy potential. If detent spring is released without due care detent spring and balls could fly into the eyes of the disassembler. Wear safety glasses when removing or installing detent spring and balls. Failure to wear safety glasses when removing detent spring could result in eye injury or blindness.
FLYING PARTS HAZARD
1Slide piston rod assembly into hydraulic motor cylinder (263).
2Screw down hydraulic motor cap (265). Unscrew hydraulic motor cap until inlet and outlet align with hydraulic line fittings and test hole in hydraulic motor cap points toward belt guard (117).
3Torque jam nut (264) against hydraulic motor cap (265) to 150
4Fig. 5. Install hydraulic lines (271, 288) to fittings (266) to top left and right side of hydraulic motor; torque to 40 ft-lb (54.2 N•m).
5GH130 Models:
- Follow Step 2 of pump installation instructions, page 17.
GH200, GH230, GH300 Models:
-Follow Steps
6Start engine and operate pump for 30 seconds. Turn engine OFF. Check hydraulic oil level and fill with Graco hydraulic oil, page 6.
14 | 311797J |