SkyTrak 6036 Service Manual - Manual (Page 91)

3.51 Model 6036 Legacy
Boom
e. Chain Replacement
IMPORTANT: Chains and clevis’ are wear items and
experience the same stress. DO NOT attempt to service or
repair a chain or clevis. Replacement chains are shipped
pre-assembled with new clevis’.
Extend Chain Removal
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 -110, 4), lockwasher
(5) and flat washer (6) holding the rear cover (1) to
the rear of the outer boom. 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.
4. At the rear of the boom, locate the extend chain
elastic locknuts. Record the amount of threads
extending beyond both of the elastic locknuts
(Fig. 3-111, 1). These measurements will be the
starting point for adjustment of the extend chains
after installation.
Note: Remove and replace the extend chains one at a
time.
5. Remove the right side elastic locknut (Fig. 3-111, 1)
and flat washer (2) holding the right side extend
chain clevis to the anchor plate on the inner boom.
Save the flat washer and discard the elastic locknut.
Figure 3-111 Remove the Extend Chain Locknuts
6. At the front of the outer boom, remove the hex-socket
head capscrew (Fig. 3-112, 1) and elastic locknut
(2) holding the right side extend chain clevis (3) to
the yoke plates (4). Discard the elastic locknut.
7. Inspect the hex-socket head capscrew (Fig. 3-112, 1)
for signs of wear or damage. Replace with a new
hex-socket head capscrew if damaged or worn.
Figure 3-112 Remove the Extend Chain Clevis
from the Outer Boom
8. At the rear of the boom, attach one end of a wire
(Fig. 3 -113, 1) to the threaded clevis (2) on the right
side extend chain. Loop the wire around and twist
together to form a loop. Route the wire around the
right side of the clevis anchor plate (3).
Figure 3-113 Wire Loop on Threaded Clevis
9. Have a second person assist with the removal of the
extend chain. One person should pull the chain from
the front of the boom while the second person guides
the wire into the boom from the rear. Remove the
wire from the clevis, but not from inside the boom.
MA6620
1
2
SH1810
3
4
1
2
MA7990
3
1
1
2