JLG M4069 ANSI Service Manual - Manual (Page 86)

SECTION 4 - HYDRAULICS
4-14 – JLG Lift – 3121122
1. Jack Pad
2. Lock Washers
3. Round Head Hex Screws
4. Snap Ring
5. Rod Protector Plate
6. Snap Ring
7. Cylinder Rod 8. Rod Gland
9. O-Ring
10. Snap Ring
11. Outer Rod Seal
12. Inner Rod Seal
13. O-Ring
14. Backing Ring
15. O-Ring
16. Spacer
17. Piston
18. O-Ring
19. Wiper Seal
20. Piston Seal (4 Piece)
21. Wiper Seal 22. Piston Retaining Ring
23. Cylinder Barrel
24. Cylinder Port Block
25. P/O Check Valve
26. Counter Balance Valve
NOTE: Torque piston head nut (17) to 295 ft lb (400 Nm), Head Gland (8) to 590 ft. lb. (800 Nm), Counter Balance Valve (25)
and Check Valve (24) to 33 ft. lb. (45 Nm).
Apply a light coat of grease to rod end (7) and jack pad (1) before installing jack pad.
Figure 4-11. Leveling Jack Cylinder (1001140600)
21
5
8
9
10
12
13
14
15
16
18
19
7
6
4
3
2
1
11
23
24
25
26
17
20
22
SCHEMATIC FOR PORT BLOCK