JLG M4069 Service Manual - Manual (Page 88)

SECTION 4 - HYDRAULICS
4-16 – JLG Lift – 3121824
NOTE: Torque Locknut (8) to 542.3 Nm (400 ft-lbs).
Torque Counter Balance Valve (20) and Check Valve
(21) to 40-47 Nm. (30-35 ft. lb.)
When servicing, apply a light coat of grease the to
the Jack Pad (2) before installing.
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2
3
3
3
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5
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6
7
8
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10
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12
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21
1. Cylinder Barrel
2. Jack Pad
3. Special Screw, 1/2" - 13NC x 1 1/4
4. Cylinder Rod
5. Retaining Ring
6. Plate
7. End Cap
8. Head
9. Hydrolock
10. Wiper Seal
11. O-Ring
12. Wear Ring
13. Locknut
14. Flatwasher, 1 1/4"
15. Piston
16. Guidelock
17. Polyseal
18. O-Ring
19. Plugs
20. Counter Balance Valve (see note)
21. Check Valve (see note)
Figure 4-14. Leveling Jack Cylinder - USA Built Machines S/N 0200104829 to S/N 0200112735 & All Belgium Built
Machines)