Manitowoc MAX-ER 16000 - Boom Hoist Pawl Adjustment; General; Maintenance; Drum Pressure-Roller Adjustment

Reference Only
MAINTENANCE 16000 HANGING MAX-ER® OPERATOR MANUAL
6-2
Published 04-17-17, Control # 067-11
BOOM HOIST PAWL ADJUSTMENT
General
The boom hoist (Drum 5) has a drum pawl (Figure 6-2) which
is a positive locking device. When engaged, the pawl
prevents the boom hoist drum from turning in the down
direction.
The pawl is controlled by Drum 5 park switch in the
operator’s cab:
• When park is turned ON, the pawl engages. The
hydraulic cylinder extends and spring force rotates the
pawl into engagement with the ratchet.
• When park is turned OFF, the pawl disengages. The
hydraulic cylinder retracts, and the cam rotates to
disengage the pawl from the ratchet.
It may be necessary to hoist slightly to fully disengage
the pawl from the ratchet.
Maintenance
The only maintenance required is to visually check the pawl
for proper operation. This should be done daily when the
boom hoist is in use.
If necessary, adjust the eye bolt so the spring has sufficient
tension to fully engage the pawl with the ratchet.
In some cases, the pawl may come to rest on the top of a
ratchet tooth. There must be enough spring tension to pull
the pawl into the root of a ratchet tooth if the drum starts to
turn in the down direction.
DRUM PRESSURE-ROLLER ADJUSTMENT
General
The drum pressure roller (Figure 6-3) is spring loaded to
assist in maintaining proper wire rope spooling by firmly
holding the wire rope firmly in place on the boom hoist drum.
Adjustment
See Figure 6-3 for the following procedure.
The operator shall monitor drum spooling during operation.
If the wire rope jumps layers or does not wind smoothly onto
the drum, perform the following steps:
1. Hold spring guide (7) wrench flats.
2. Tighten lock nut (5) to increase spring tension.
FIGURE 6-2
A10767
1
2
6
3
5
4
1-7/16 in (36 mm)
Initial Adjustment with
Pawl Against Ratchet
Item Description
1 Ratchet
2Pawl
3 Hydraulic Cylinder
4Eye Bolt
5Cam
6Spring
WARNING
Crush Hazard!
The roller is spring loaded. Stop drum and turn off engine
before adjusting.
FIGURE 6-3
Item Description
1Drum
2 Pressure Roller
3Roller Frame
4Pivot Pin
5 Lock Nut
6Spring
7 Spring Guide
4
11-3/8 in (289 mm)
Initial Adjustment with
Rollers Against Bare Drum
A14558
3
1
5
6
2
7