SkyTrak 8042 Service Manual - Manual (Page 143)

Boom
3.82 Model 8042, 10042, 10054 Legacy Rev. 03/04
b. At the rear of the boom, remove the capscrew (1)
and lockwasher (2) holding the retract chain
sheave pin (3) to the mounting plate inside the
intermediate boom.
c. Remove the retract chain sheave pin (3) from the
mount and the retract chain sheave (4). Remove
the retract chain sheave from the intermediate
boom.
d. Inspect the bushings inside the sheave (4).
Replace the bushings if there are any signs of
wear.
e. Inspect the sheave pin (3) for wear or damage.
Replace the pin if there are any signs of wear.
5. Support the front of the Extend/Retract cylinder (5).
6. Remove the retaining ring (6) from one side of the
Extend/Retract cylinder rod end mounting pin (7).
Use a brass punch and a rawhide hammer to
remove the rod end pin from the mounting ears (8)
on the primary intermediate boom.
7. Inspect the pin (7) for wear or damage. Use fine
emery cloth to repair minor nicks or corrosion. If pin
is damaged, replace it. Save the retaining ring.
8. On the left side of the outer boom assembly, locate
the boom extend sensor (9). Remove the two
capscrews (10) and lockwashers (11) holding the
boom extend interlock proximity sensor mounting
bracket (12) to the side of the outer boom. The boom
proximity sensor can remain assembled to the
mounting bracket.
9. Remove the tie wraps holding the boom extend
interlock proximity sensor wires to the hydraulic
tubes. Secure the boom extend interlock proximity
sensor and wires out of the way, at the rear of the
frame. Remove the retainer nuts (13) from the holes
in the outer boom. Save all hardware.
10. Pull the primary intermediate boom straight out of
the outer boom. Reposition the slings as needed so
the primary intermediate boom balances when
removed from the outer boom. Set the primary
intermediate boom down on blocks on a hard, level
surface.
MH2120
1
2
3
4
MH2130
8
5
6
7
8
MH2170
9
10
11
12
13