SkyTrak 8042 Service Manual - Manual (Page 209)

Boom
3.148 Model 8042, 10042, 10054 Legacy Rev. 03/04
9. Pull the inner boom retract chain clevis toward the
rear of the boom, through the middle of the two
center hoses on the chain reel and over the top of
the chain reel. Let the clevis end of the retract chain
hang out the rear of the boom. Use a piece of 17
gauge wire that is approximately 6 feet long and tie it
to the clevis end of the inner boom retract chain.
This wire will be used to guide the chain back into
the boom when the boom is extended to expose the
other end for removal.
Note: Have a second person help with the installation of
the retract chain between the primary and secondary
intermediate boom assemblies.
10. One person should start the engine, slowly extend
the boom while the second person guides the inner
boom retract chain with the wire attached into the
back of the boom. Extend the boom until the inner
boom retract chain adjustment nut (1) on the lower
left side of the primary intermediate boom (2) can be
accessed and removed. Turn the engine OFF.
11. If the chain clevis has a threaded hole on the
end (5), 17 gauge wire can be attached to the retract
chain clevis using a threaded eye (6) or a flat washer
tack welded to a capscrew (7). The outside diameter
of the eye or flat washer must be smaller than the
diameter of the threads on the clevis.
12. Remove the elastic locknut (1) and flat washer (3)
holding the threaded clevis (4) on the inner boom
retract chain to the tab in the primary intermediate
boom. Save the flat washer and discard the elastic
locknut.
13. If a threaded eye or capscrew with flat washer was
installed in step 7, attach a 17 gauge wire to the end
of the retract chain clevis. The wire must be long
enough to pull the clevis and chain through the outer
boom. The wire must be heavy enough, 17 gauge or
heavier, to pull the weight of the entire chain back
through the boom during the reassembly.
If there is no threaded hole on the end of the clevis, a
tow wire and guide wire will need to be attached to
the clevis before pulling the chain out of the boom.
The tow wire must be long enough to pull the clevis
and chain through the length of the primary
intermediate boom and must be heavy enough, 17
gauge or heavier, to pull the weight of the entire chain
back through the boom during the reassembly. The
guide wire is used only to pull the tow wire through
the boom to be used for installing the new chain.
MH2660
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MH5950
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MH5960
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