JLG G6-42A Service Manual - Manual (Page 65)

3-27 G6-42A, G9-43A, G10-43A
Boom
6. The bottom wear pads must be shimmed equally on
each side.
7. Maintain a total boom section clearance (5) of
0.070 - 0.130 in (1,78 - 3,30 mm) both the horizontal
and vertical directions.
8. The length of the wear pad bolt depends on the
number of shims, spacers and washers being used.
9. The thickness of each threaded wear pad insert is
0.312 in (7,92 mm)(A).
10. The bolt length should be determined by measuring
the distance from the face of the insert to the face of
the boom (B) including any spacer, shim(s) and
washer(s).
11. Bolt thread engagement in the wear pad insert
should be 0.275 ± 0.040 in (6,98 ± 1,0 mm).
12. One or two hardened washers are to be used on
each wear pad bolt except where noted otherwise.
DO NOT use more than two hardened washers.
13. Use only one hardened washer if mounting bolts are
recessed.
14. Wear Pad Bolt Torque:
3/8 - 24 Bolt, 32 - 37 lb-ft (43 - 50 Nm)
3/8 - 24 Hollow Bolt, 15 - 17 lb-ft (20 - 23 Nm)
1/2 - 20 Bolt, 76 - 86 lb-ft (103 - 116 Nm)
1/2 - 20 Hollow Bolt, 45 - 50 lb-ft (61 - 68 Nm)
15. Torque wear pad bolts after shimming is completed.
16. Lubricate the face and pockets of each wear pad
after being installed.
3.10.3 Boom Section Wear Pad Pathway
Lubrication:
1. Clean and lightly grease all wear pad pathways with
Mystik Tetrimoly grease.
2. Clean and lightly grease the hose carrier guide bar
pathways with Mystik Tetrimoly grease.
MY5510
5 5
MY3620
A
B