Toro Workman 3000 Series, Руководство по обслуживанию

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Workman 3000/4000 Series Page 9 – 44 Hydraulic System
Lift Cylinder Service
1. Lock nut
2. Wear ring
3. Seal
4. O–ring
5. Piston
6. Head
7. O–ring
8. Back–up
seal
9. Retaining ring
10. Seal
11. Wiper
12. Barrel
13. Shaft
14. O–ring
Figure 38
1
2
3
4
5
13
14
6
7
8
9
10
11
12
60 to 75 ft–lb
(81 to 102 N–m)
Disassembly (Fig. 38)
1. Pump oil out of cylinder into a drain pan by slowly
moving piston back and forth.
2. Before disassembling cylinder, plug ports, wash exte-
rior with cleaning solvent and dry thoroughly.
IMPORTANT: Use caution when using a vise to avoid
scratching or distorting any parts.
3. Put cylinder in a vise so shaft end is facing up.
4. Use a spanner wrench to rotate head (Item 6) and re-
move retaining ring (Item 9). Grasp end of shaft and use
a twisting and pulling motion to carefully extract the pis-
ton, shaft and head assembly from the barrel.
5. Remove cylinder from vise.
6. Remove lock nut (Item 1) from shaft, then remove pis-
ton (Item 5), and head (Item 6). Remove and discard
seals, o–rings, wear ring and wiper from piston and
head.
Spanner wrench
Retaining ring
Figure 39
Removing retaining ring