SkyTrak 8042 Service Manual - Manual (Page 186)

3.125 Model 8042, 10042, 10054 Legacy Rev. 03/04
Boom
b. Expose Extend Chains for Inspection
1. Park the vehicle on level ground. Place the travel
select lever in (N) NEUTRAL, place the neutral lock
lever in the (N) NEUTRAL LOCK position, engage
the parking brake switch and raise the boom to a
horizontal (level) position.
2. Lower both outriggers completely
3. Fully extend the boom until both extend chains are
taut. Shut the engine OFF.
The extend chains will be visible for inspection with the
vehicle in this state.
While doing the chain inspection, check all chain clevis
ends for distortion or cracking and sheaves for bearing
wear or grooving from the chain.
If during the inspection, any chain is found to be damaged
or stretched, the chain must be replaced. It is
recommended that when any chain is replaced, that all
the chains and clevis’ be replaced at the same time.
Note: DO NOT attempt to repair a chain. Replace a
stretched or damaged chain with a new part. Always
replace both the chain and the clevis. It is recommended
that when any chain is replaced, that all the chains and
clevis’ be replaced at the same time.
4. If the chain needs to be replaced, refer to Section
3.7.6, “Boom Extend and Retract Chains Removal
and Replacement.”
5. If the chain does not need to be replaced, lubricate
the chain. (Refer to Section 3.7.2, “Chain
Lubrication.”)
c. Expose Intermediate Boom Retract Chain for
Inspection
The retract chain must be removed from the boom in
order to be visually inspected. This must be done every
1000 hours or whenever the retract chain is removed
from the boom. (If removal of the chain is required refer
to Section 3.7.6, “Boom Extend and Retract Chains
Removal and Replacement.”)
While doing the chain inspection, check all chain clevis
ends for distortion or cracking and sheaves for bearing
wear or grooving from the chain.
If during the inspection, any chain is found to be damaged
or stretched, the chain must be replaced. It is
recommended that when any chain is replaced, that all
the chains and clevis’ be replaced at the same time.
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 (6), lockwasher (7) and flat
washer (8), holding the rear cover (9) to the rear of
the outer boom (10). 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.
MH5690
9 10
6
7
8