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 TM 5-2420-224-10
(12) Main Mast Setup.
(a) Make sure extension boom is fully retracted by pushing down boom extension lever (5). Make sure outer
boom is fully retracted by pushing down outer boom control lever (6).
CAUTION
Failure to fully erect crane mast will cause damage to crane mast cylinders.
NOTE
Tilt lock lever and mast folding lever must be used together to move mast.
(b) Erect mast by pushing down tilt lock lever (9) and pulling up mast folding lever (1) at same time until mast
has stopped in upright position.
(c) Pull rotation lock lever (10) to detent position to release rotation lock.
(d) Raise inner boom to unfold crane by pulling up inner boom control lever (7).
(e) Raise outer boom to working position by pulling up outer boom control lever (6).
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