4. Chain roller pin lubrication zerk on front of base boom head, (3) to (4) shots of grease
is required. See image below for location of zerk.
1. Boom Head Sheaves lubrication-With outriggers set , boom retracted, boom lowered,
and hook block on the ground then SHUTDOWN ENGINE.
2. All sheaves require lubrication. The top set of sheaves-(1) zerk per sheave, (3) three to
(4) four shots of grease per sheave is required. Lower sheaves each have a zerk that
can be accessed by aligning web holes to get grease gun to the inboard sheaves.
T300-1_T500-1_T780
Maintenance
332 P/N 12261-683
REVISED: January 2015
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