Lull 6K Service Manual - Manual (Page 387)

Boom and Transfer
Service Manual — Models 644B, 6K, 844C, 8K, 1044C, 10K 6-137
644B-42 (S/N 265–)
844C-42 (S/N 857–)
1044C-42 (S/N 121–)
6K-42 (S/N 138–)
8K-42 (S/N 274–)
10K-42 (S/N 109–)
Fig. 6-146: Upper Chains - Third Type
Third Type (Ref. Fig. 6-146)
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 (Items 9 and 14) on the chain
anchors with two (2) flatwashers, (Item 5) shoulder bolts (Item 6),
and locknuts (Item 16). Torque the capscrews to 276 in-lbs.
c. Install the chain adjustment anchor (Item 10) between the two (2)
chain equalizers with a flatwasher (Item 8), shoulder bolt (Item 7),
and a locknut (Item 15). Torque the locknut to 110 ft-lbs.
d. Install the chain adjustment anchor, with the jam nut (Item 11)
installed, on the outer boom section. Install the lockwasher
(Item 12) and nut (Item 13) on the chain adjustment anchor. Torque
the jam nut (Item 11) until just before the chains become taunt.
Torque the nut (Item 13) to 840 ft-lbs.
J
1277
# Description
1 Upper Chain
2 Locknut
3 Chain Anchor
4 Shoulder Bolt
5 Flatwasher
6 Shoulder Bolt
7 Shoulder Bolt
8 Flatwasher
# Description
9 Chain Equalizer
10 Chain Adjustment Anchor
11 Jam Nut
12 Lockwasher
13 Nut
14 Chain Equalizer
15 Locknut
16 Locknut
13
16
1
12
10
11
14
15
7
8
9
5
6
4
3
2