TM 55-1680-320-23 & P
2-29. BOOM POSITION SUPPORT ASSY - ADJUST (cont)
Move control pendant BOOM switch to IN, then OUT positions. Note locations of cams (8, 9) at travel extremes.
Switches (10, 11) must actuate before hoist mechanical stops engage.
With hoist in outboard position (CCW), cam (8) should be under roller leaf actuator (12) of switch (10). Boom head
assembly shall be in line with STA 82.05 mark. Adjust switch and cam as follows:
Move HOIST PWR switch to OFF.
Loosen screw (13). Move cam (8) towards switch (11) for over-travel, away from switch for under-trowel.
Apply locktite compound to threads of screw (13). Tighten screw.
Top of cam (8) should depress actuator and just close switch (10).
If further adjustment is required, loosen screws (14) and reposition switch (10). Tighten SCrews.
REACTION ARM AND UPPER
BASEPLATE LOCKED IN
POSITION NO. 1
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