SkyTrak 6036 Service Manual - Manual (Page 95)

3.55 Model 6036 Legacy
Boom
8. Inspect wear and condition of the booms, chains,
clevis’, chain sheaves, extend/retract cylinder, chain
rods, clevis anchors and all mounting hardware.
Replace any worn or damaged parts. DO NOT
attempt to make any repairs to the chain.
Note: Chains and clevis’ are wear items and experience
the same stress. DO NOT attempt to service or repair a
chain or clevis. Always replace a stretched or damaged
chain or clevis with a new part. Replacement chains are
shipped pre-assembled with new clevis’.
Retract Chain Installation
1. Coat the threads of the threaded clevis (Fig. 3-122, 1)
with multi-purpose grease.
Note: Have a second person help with the installation of
the new retract chain in between intermediate and outer
boom assemblies.
2. From the rear of the boom, one person should push
the threaded clevis end (Fig. 3-122, 1) of the new
retract chain under the chain sheave and down
between the intermediate boom and the outer boom.
Keeping the retract chain (2) to the right side of the
boom, push the threaded clevis down to the tab (3)
at the front underside of the outer boom.
3. The person at the front of the boom should guide the
threaded end of the clevis (Fig. 3 -122, 1) through
the hole in the tab 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.
Note: ALWAYS use new elastic-lined nuts to help
ensure proper fastening.
4. Install the flat washer (Fig. 3-122, 5) and a new 3/4-16
elastic locknut (6) onto the threaded clevis. Tighten
the locknut until the threaded end of the clevis is
flush with the top of the locknut.
Figure 3-122 Retract Chain Clevis to Tab in Outer Boom
5. At the rear of the boom, place the retract chain up
and over the chain sheave. Place the clevis
(Fig. 3 -121, 4) between the two anchor plates (1).
Align the hole in the clevis (4) with the second hole
from the rear of the anchor plates.
6. Insert the shoulder bolt (Fig. 3-121, 3) through the
plates and clevis, and secure in place with a new 3/8-16
elastic locknut (2). Tighten the locknut securely.
7. At the front underside of the outer boom, tighten the
elastic locknut (Fig. 3-123, 1) on the retract chain
clevis until the amount of threads protruding beyond
the elastic locknut is the same as the measurement
recorded during removal of the retract chain.
Figure 3- 123 Retract Chain Adjustment Locknut
MH2560
2
1
4
3
6
5
OA0512
1