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Service and Repair Manual
Boom Components
7
Protect the boom lift cylinder rod from damage.
8
Use a soft metal drift to remove both pivot pins.
9
Remove the secondary boom extension
cylinder from the machine while guiding the
barrel end of the cylinder out of the boom.
Crushing hazard. The
secondary boom extension
cylinder may become
unbalanced and fall if it is not
properly supported when it is
removed from the machine.
Component damage hazard.
The boom lift cylinder rod can
become damaged if the barrel
end of the secondary boom
extension cylinder is allowed to
come in contact with it.
62
4-5
Boom Extend and Retract Cables
How to Adjust the Boom
Extend/Retract Cables
Properly adjusted extend/retract cables are
essential to safe machine operation. Failure to
maintain proper adjustment of the cables could
result in unsafe operating conditions and may
cause component damage. The boom extend and
retract functions should operate smoothly and be
free of hesitation, jerking and unusual noise.
1
Start the engine from the ground controls.
2
Raise and extend the boom approximately
15 feet / 4.6 m.
3
Fully retract the boom and lower to the
horizontal position.
4
Stop the engine.
5
Measure the distance between boom tubes
#1 and #2, measuring from the points
identified as (11) and (12). (Illustration 1) This
is dimension "A".
Note: The distance should be approximately 1 in /
2.6 cm. The actual measurement will be a function
of the primary extend/retract cylinder.
SX-180
December 2018
Part No. 1268497
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