Manitowoc Published 04-06-18, Control # 231-14 6-5
MLC650 VPC-MAX™ OPERATOR MANUAL MAINTENANCE
Adjusting the Drum 5 Pressure Roller
See Figure 6-4 for the following procedure.
The spring-loaded pressure roller (1) assists in maintaining
proper wire rope spooling by holding the wire rope firmly in
place on the boom hoist (2).
The operator should visually monitor drum spooling during
daily operation.
If the wire rope jumps layers or does not wind smoothly onto
the boom hoist drum, proceed as follows:
1. Correct the wire rope spooling.
2. Tighten the lock nut (3) to increase spring tension.
FIGURE 6-4
Item Description
1 Pressure Roller
2 Boom Hoist (Drum 5)
3 Lock Nut
4Spring
Initial Adjustment of
289 mm (11.38 in)
with Roller Against
Bare Drum
WARNING
Crush Hazard!
The pressure roller is spring loaded. Stop the boom hoist
drum and turn off the engine before adjusting the roller.
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