SkyTrak 8042 Service Manual - Manual (Page 124)

3.63 Model 8042, 10042, 10054 Legacy Rev. 03/04
Boom
19. The person at the front of the boom should guide the
threaded end of the clevis (10) through the hole in
the tab (12) using a Phillips screwdriver (13). 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.
20. Reassemble the flat washer (14), saved, and a new
3/4-16 elastic locknut (15) onto the threaded
clevis (16). Tighten the locknut until the threaded
end of the clevis is flush with the top of the locknut.
21. At the rear of the boom, place the retract chain (5)
up and over the chain sheave (3). Place the clevis
between the two anchor plates (2).
22. If re-installing a used chain insert the saved shoulder
bolt (1), 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 (1), saved during
removal of the old chain.
24. Secure the shoulder bolt in place with a new 3/8-16
elastic locknut (4). Tighten the locknut securely.
25. Tighten the elastic locknut (15) on the retract chain
clevis (16) until the amount of threads protruding
beyond the elastic locknut is the same as the
measurement recorded during removal of the retract
chain.
26. Adjust retract chain tension. (Refer to Section 3.4.4,
a. “Component/Assembly Verification.”)
27. After adjustment is complete, assemble the rear cover
to the rear of the outer boom. At the rear of the outer
boom (17), position the rear cover (18) in place.
Secure the cover in place with the saved 5/16" flat
washer (19), lockwasher (20) and thumbscrew (21).
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.
MA9520
10
11
12
13
MA9510
14
15
16
MH0850
17
18
19
20
21