Usage:
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Stop the engine, lower the bucket to the ground, move the control levers backward and forward to release the pressure in the hydraulic system. Slowly loosen the cap to release any pressure in the hydraulic tank. Let the hydraulic oil become cool before any lines are disconnected in the hydraulic system. |
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- 920-17.5 U.S. gal. (66 litre)
- 930-19.5 U.S. gal. (74 litre)
1. Drain the oil from the hydraulic tank. The capacity of the system is:
2. Remove fender (2), cover (3) and the cover from the bottom of the hydraulic tank.
3. Remove cover (1) and the gasket from the hydraulic tank.
4. Remove baffle assembly (4) and the O-ring seal from the oil filter housing.
5. Remove bolts (5) and (6) to disconnect the tilt and lift lever linkages.
6. Disconnect hose assembly (7) from the bottom of the hydraulic tank.
7. Disconnect four tube assemblies (9) and (10) from the bottom of the hydraulic tank.
NOTE: Drain valve (8) was removed for better photo illustration of the location of bolts (11).
8. Remove bolts (11) that hold the hydraulic control valve in position.
9. Move control valve (12) to the left. Remove bolt (14). Loosen bolt (15) and remove strainer (13).
10. Two persons are needed to remove control valve (12) from the hydraulic tank. The weight of the control valve is 65 lb. (29 kg).
Install Hydraulic Control Valve
1. Two persons are needed to put the control valve in the hydraulic tank. Make sure the O-ring seals are held in position with clean grease before control valve (1) is put on the make-up valve body.
2. Put strainer (3) in position under bolt (2) and install the second bolt that holds it. Tighten the two bolts.
3. Install the two bolts that hold control valve (1) in position from the bottom of the hydraulic tank. Tighten the bolts to a torque of 65 ± 3 lb.ft. (90 ± 4 N·m).
4. Put clean hydraulic oil on the O-ring seals and connect the four tube assemblies (5) and hose assembly (4) to the bottom of the hydraulic tank.
5. Put the tilt and lift linkages in alignment with the valve spools and install bolts (6) and (7). Tighten the bolts to a torque of 14 ± 2 lb.ft. (19 ± 3 N·m).
6. Put clean hydraulic oil on the O-ring seal and install baffle assembly (8).
7. Install fender (10), the two covers to the bottom of the hydraulic tank, the gasket and cover (9).
8. Fill the hydraulic system with oil to the correct level.
9. See LOADER HYDRAULIC SYSTEMS in TESTING AND ADJUSTING for the relief valve settings.
Disassemble Hydraulic Control Valve
start by:
a) remove hydraulic control valve
1. Remove baffle assemblies (4) and (5) from the control valve.
2. Remove body (3), tilt relief valve groups (1), plugs (2) and the O-ring seals from the control valve.
3. Disassemble tilt relief valve groups (1) as follows:
Remove plug (13), shims (12), springs (11) and (10), washer (9) and valve (8) from body (7). Remove O-ring seal (6) from body (7).
4. Remove relief valve group (14) from body (3). Remove the two O-ring seals and back-up ring from valve group (14).
NOTE: Do not disassemble valve group (14). There are no serviced parts to this assembly so use a new part for replacement if necessary.
5. Hold the tilt and lift valve stems in valve body (15) so they will not turn. Loosen detents (17) from the valve stems.
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Retainers (16) have spring tension on them. Remove the bolts that hold the retainers slowly. |
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6. Remove the bolts that hold retainers (16) to valve body (15).
7. Remove retainers (16), spacers (22), springs (21), spacers (20), valve stems (18) and (19) from valve body (15).
8. Remove plugs (23), the shims, springs and balls to remove detents (24) and spacers from retainers (16).
9. Remove the two plugs (26) and O-ring seals from valve body (15).
10. Remove the three plugs (27) and O-ring seals from valve body (15).
11. Remove plugs (25), (28), the O-ring seals, springs and valves from valve body (15).
Assemble Hydraulic Control Valve
| NOTICE |
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All parts must be kept clean. Use paper free of lint and clean solvent to clean the parts. Put clean hydraulic oil on all of the parts before they are assembled. |
1. Install the two plugs (4) and O-ring seals in valve body (1).
2. Install the three plugs (3) and O-ring seals in valve body (1).
3. Install valves (5), springs (6), the O-ring seals, plugs (2) and (7) in valve body (1).
4. Install tilt valve stem (8) and lift valve stem (9) in valve body (1) as shown.
5. Install detent (11) and spacer (12) in retainer (10) as shown for the tilt valve stem.
6. Install detent (15) and spacer (14) in retainer (13) as shown for the lift valve stem.
7. Install balls (16), springs (17), shims (18) and plugs (19) in the retainers to hold the detents. Tighten plugs (19) to a torque of 9 ± 2 lb.ft. (12 ± 3 N·m).
8. Install the three spacers (20), two springs (21) and spacer (22) on the valve stems.
NOTE: Spacer (22) must be installed in the position shown on the lift valve stem.
9. Put 9S3263 Thread Lock on the threads of both detents. Make sure the detents are visually in alignment with the valve stems and install retainers (10) and (13) in the positions shown.
10. Tighten the detents in the ends of the valve stems to a torque of 27 ± 3 lb.ft. (38 ± 4 N·m).
11. Install O-ring seal (23), the back-up ring and O-ring seal (25) on valve group (24). Make sure the back-up ring for O-ring seal (25) is toward O-ring seal (23).
12. Install valve group (24) in body (26).
13. Assemble the two tilt relief valve groups as follows:
Install valve (29), washer (30), springs (31) and (32), shims (33) and plug (34) in valve body (28). Tighten plug (34) to a torque of 100 ± 5 lb.ft. (135 ± 7 N·m). Install O-ring seal (27) on valve body (28).
NOTE: See LOADER HYDRAULIC SYSTEM in TESTING AND ADJUSTING for the correct pressure setting of the relief valve groups.
14. Install the O-ring seals, plugs (36) and tilt relief valve groups (35) in the valve body. Tighten valve groups (35) to a torque of 50 ± 3 lb.ft. (70 ± 4 N·m).
15. Put the O-ring seal in position on body (26) and install it on the valve body.
16. Install the O-ring seals and baffles (37) and (38). Tighten the bolts that hold the baffles to a torque of 65 ± 3 lb.ft. (90 ± 4 N·m).
end by:
a) install hydraulic control valve