JLG 660AJ Service Manual - Manual (Page 65)

SECTION 3 - CHASSIS & TURNTABLE
3121616 – JLG Lift – 3-21
19. Turn housing on its side and remove cylinder kit assem-
bly (31). Set assembly aside. Do not to scratch running
surface.
NOTE: Grooves on surface of cylinder kit identify its displacement:
20. Turn housing over and remove snap ring (32) retaining
shaft seal and support washer. Remove support washer
(33) and carefully pry out shaft seal (34). Discard seal. To
avoid damaging shaft during seal removal, install a large
sheet metal screw in chuck of slide hammer. Drive screw
into seal surface and use slide hammer to pull seal.
21. Remove inner snap ring (35) and shaft/bearing assembly.
22. Remove snap-ring (36) retaining shaft front bearing. Pull
bearing (37) off shaft (38).
23. Turn housing over and remove swashplate (39) by lifting
on end opposite servo lever.
24. Remove servo piston (40). Remove piston seal (41) and
O-ring (42) from servo piston. Discard seal and O-ring.
25. Remove journal bearings (43) from housing. Note loca-
tion and orientation of each bearing for reassembly.
Table 3-5. Displacement Identifiers
# of Grooves Frame L Frame K
1 25 38
2 30 45
3 35 - -
31
31. Cylinder Kit Assembly
Figure 3-23. Cylinder Kit
32. Snap Ring
33. Support Washer
34. Shaft Seal
Figure 3-24. Shaft Seal
32
33
34
35. Inner Snap Ring
36. Snap Ring
37. Bearing
38. Shaft
Figure 3-25. Shaft & Front Bearing
38
37
36
35
39. Swashplate
40. Servo Piston
41. Piston Seal
42. O-ring
43. Journal Bearings
Figure 3-26. Swash Plate & Servo Piston
41
42
40
Lift here
39
43