SkyTrak 6042 Service Manual - Manual (Page 109)

3.63 Model 6042 Legacy Origin 7/02
Boom
19. The person at the front of the boom should guide the
threaded end of the clevis (Fig. 3 -141, 1) through
the hole in the tab (3) using a Phillips screwdriver (4).
Insert the screwdriver through the hole in the tab and
catch the countersunk hole in the end of the clevis.
Guide the threaded clevis out as the person at the
rear of the boom pushes the retract chain.
Figure 3-141 Chain Clevis through Tab in Outer Boom
20. Reassemble the flat washer (Fig. 3-142, 1), saved,
and a new 3/4-16 elastic locknut (2) onto the threaded
clevis (3). Tighten the locknut until the threaded end
of the clevis is flush with the top of the locknut.
Figure 3-142 Retract Chain Clevis to Tab in Outer Boom
21. At the rear of the boom, place the retract chain
(Fig. 3 -143, 1) up and over the chain sheave (2).
Place the clevis between the two anchor plates (3).
22. If re-installing a used chain insert the shoulder bolt
(Fig. 3 -143, 4), saved, in the same position in the
plates and clevis recorded during removal.
23. If installing a new chain, line up the hole in the clevis
with the second hole from the rear of the anchor
plates. Insert the shoulder bolt (Fig. 3-143, 4), saved
during removal of the old chain.
24. Secure the shoulder bolt in place with a new 3/8-16
elastic locknut (Fig. 3-143, 5). Tighten the locknut
securely.
Figure 3-143 Retract Chain Anchor Plates
25. Tighten the elastic locknut (Fig. 3-142, 2) on the
retract chain clevis (3) until the amount of threads
protruding beyond the elastic locknut is the same as
the measurement recorded during removal of the
retract chain.
MA9520
2
1
3
4
MA9510
3
1
2
MH2550
3
2
5
4
1