Service Manual

Boom
3.56
Model 8042, 10042, 10054 Legacy Rev. 03/04
5. Recheck chain tension. (Refer to Section 3.4.3,
“Boom Chain Tension Check.”)
6. Further chain adjustment can be achieved by
loosening all three chain locknuts (1 and 2) and
moving the rear retract chain clevis (3) from the
original mounting hole (4) in the anchor plate to the
next hole (5).
This is only acceptable when boom chain sag (9)
cannot be acquired and the chain elongation
measurement is still less than 12.36" (313 mm).
Make sure to use a new 3/8-16 elastic locknut (6) to
re-secure the chain clevis to the anchor plate. Follow
the instructions in Section 3.4.4, a. “Component/
Assembly Verification.”
7. Recheck chain tension. (Refer to Section 3.4.3,
“Boom Chain Tension Check.”)
8. Assemble the rear cover to the rear of the outer boom.
On the rear of the outer boom (10), position the rear
cover (11) in place. Secure the cover in place with
the saved 5/16" flat washer (12), lockwasher (13), and
thumbscrew (14). Insert the thumbscrew through the
bottom of the outer boom and into the rear cover.
Tighten the thumbscrew securely to hold the cover in
place.
MH1751
1
OA0512
2
MA9450
3
4
5
6
7
8
OA0492
9