SkyTrak 6042 Service Manual - Manual (Page 104)

Boom
3.58 Model 6042 Legacy Origin 7/02
3. To increase the separation distance: Loosen the
retract chain locknut (Fig. 3-127, 1) on the bottom of
the outer boom one or two turns and tighten the two
extend chain locknuts (Fig. 3-128, 1) equally the
same number of turns. A minimum of 1 full thread on
the clevis must protrude beyond the elastic collar of
the locknut.
4. To decrease the separation distance: Loosen the
extend chain locknuts (Fig. 3-128, 1) at the rear of
boom equally one or two turns and tighten the retract
chain locknut (Fig. 3-127, 1) the same number of
turns. A minimum of 1 full thread on the clevis must
protrude beyond the elastic collar of the locknut.
5. Assemble the rear cover to the rear of the outer boom.
On the rear of the outer boom (Fig. 3-129, 1), position
the rear cover (2) in place. Secure the cover in place
with the 5/16" flat washer (3), saved, 5/16" Internal
tooth lockwasher (4), saved, and thumbscrew (5),
saved. 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.
Figure 3-127 Retract Chain Locknut
Figure 3-128 Extend Chain Adjustment Locknuts
Note: If the inner to intermediate boom separation
distance cannot be achieved, contact the local
OmniQuip Authorized Service Center (ASC) or the
OmniQuip Service Department.
3.4.5 Boom Extend and Retract Chains
Removal and Replacement
a. Extend Chains Removal and Replacement
1. Park the vehicle on a hard, level surface.
2. Fully retract the boom and raise the boom to a
horizontal position. Place the travel select lever in
(N) NEUTRAL, move the neutral lock lever to
NEUTRAL LOCK position, engage the parking brake
switch and shut the engine OFF.
3. Remove the thumbscrew (Fig. 3-129, 1), lockwasher
(2) and flat washer (3) holding the rear cover (4) to
the rear of the outer boom (5). Lift the rear cover
straight up until the capscrew in the top of the cover
clears the retaining hole in the top of the outer boom.
Remove the cover from the outer boom.
Figure 3-129 Rear Cover On Outer Boom
OA0512
1
MH1751
1
MA9820
3
2
1
5
4