Drum Pressure Roller; Adjustment - Manitowoc 999 Service And Maintenance Manual

999 SERVICE/MAINTENANCE MANUAL
A1081
Adjusting
Screw
Limit Switch
Roller
Turn Adjusting Screw
Out to Open Switch

Drum Pressure Roller

Adjustment

See Figure 5-2 for the following procedure
Optional drum pressure roller assemblies (13) are available
for front and rear load drums.
The rollers are spring-loaded to assist in maintaining proper
wire rope spooling by firmly holding the wire rope against the
drum and subsequent layers.
WARNING
Crush Hazard!
Rollers are spring-loaded. Before adjusting, stop drums
and turn off engine.
Manitowoc
Lever
Jam Nut
Eyebolt
Published 05-16-17, Control # 233-03
Return
Spring
Cap Screw
Bail Limit
Bare 1-5/8 in
Drum (41 mm)
Lagged 1-3/8 in
Drum (35 mm)
The operator must monitor drum spooling during operation.
If the wire rope jumps layers or does not wind smoothly into
the drum, perform following steps:
1. With either roller contacting drum barrel, adjust spring
(14) to an overall length of 13 in (330 mm).
This ensures correct initial tension on drum.
NOTE: The drum pressure roller is intended to be used
with one layer of rope only. It is permissible to store
up to three layers of rope on drums. Spooling of
more than three layers of rope on drum requires
removal of roller.
Auxiliary
Load Drum
3 to 4 Wraps of
Wire Rope Remaining
on Load Drum
Bail Limit
Limit
Rollers
FIGURE 5-3
HOISTS
5
5-5