Lull 6K Service Manual - Manual (Page 492)

Boom and Transfer
6-242 Service Manual — Models 644B, 6K, 844C, 8K, 1044C, 10K
Rear Spacer Blocks, Support Blocks, and Shims
Fig. 6-254: Boom Cradle – Rear Spacer Blocks, Bushings, and Shims
(Ref. Fig. 6-254) The following steps are required to replace rear shims
and support blocks.
1. Follow preparation procedures as outlined in Section 3 of this manual.
2. Lower the boom to the ground, apply the park brake, and stop the
engine.
CAUTION: To avoid personal and/or equipment damage, support the
boom and boom cradle before removing the support and
spacer block assemblies. Use suitable blocking and lifting
devices to prevent the boom and cradle from shifting from side
to side.
3. Remove two (2) each capscrews (Item 13) and lockwashers (Item 12)
securing each support block to the boom cradle.
4. Remove the shim(s) (Item 11), spacer(s) (Item 10) and rear support
blocks (Item 9).
5. Lower the rear of the boom cradle slightly so that the spacer blocks are
no longer against the lower edge of the rail.
6. Loosen two (2) setscrews (Item 1) in each spindle nut (Item 2).
Remove two (2) spindle nuts.
J
1173
2
1
3
4
6
8
7
10
11
12
13
15
14
16
9
5
# Description
1 Setscrew
2 Spindle Nut
3 Sleeve
4 Shim (16 Gauge)
5 Shim (10 Gauge)
6 Spacer Block
7 Capscrew
8 Flatwasher
# Description
9 Rear Support Block
10 Spacer (1/4" Thick)
11 Shim (22 Gauge)
12 Lockwasher
13 Capscrew
14 Boom Pivot Bushing
15 Grease Fitting Cover
16 Grease Fitting