Lull 6K Service Manual - Manual (Page 386)

Boom and Transfer
6-136 Service Manual — Models 644B, 6K, 844C, 8K, 1044C, 10K
644B-42 (S/N 142–264)
844C-42 (S/N 434–856)
1044C-42 (S/N 111–120)
6K-42 (S/N 114–137)
8K-42 (S/N 193–)273
10K-42 (S/N 101–108)
Fig. 6-145: Upper Chains - Second Type
Second Type (Ref. Fig. 6-145)
a. Install a chain anchor (Item 3) on each upper chain (Item 1) with a
shoulder bolt (Item 4) and locknut (Item 2). Torque the locknut to 75
in-lbs.
b. Install two (2) chain equalizers (Item 6) on the chain anchors and
the chain adjustment anchor (Item 9) with three (3) flatwashers,
(Item 7) shoulder bolts (Item 8), and locknuts (Item 5). Torque the
locknuts to 110 ft-lbs.
c. Install the chain adjustment anchor, with the jam nut (Item 10)
installed, on the outer boom section. Install the lockwasher
(Item 11) and nut (Item 12) on the chain adjustment anchor. Torque
the jam nut (Item 10) until just before the chains become taunt.
Torque the nut (Item 12) to 840 ft-lbs.
J
1278
# Description
1 Upper Chain
2 Locknut
3 Chain Anchor
4 Shoulder Bolt
5 Locknut
6 Chain Equalizer
# Description
7 Flatwasher
8 Shoulder Bolt
9 Chain Adjustment Anchor
10 Jam Nut
11 Lockwasher
12 Nut
9
10
11
12
6
2
3
4
5
1
7
8
6