Manitowoc MLC650 Service Maintenance Manual

Reference Only
Manitowoc Published 09-09-16, Control # 229-09 5-73
MLC650 SERVICE/MAINTENANCE MANUAL HOISTS
5
55
9. Tighten the lock nuts (7b) against the plates until
components can be assembled.
10. Attach lifting slings from a hoist to the pressure roller
assembly. The pressure roller assembly weighs 123,7
kg (272.73 lb).
11. Lift the pressure roller assembly into position at the
plates on the drum assembly.
12. Install the pins (6 and 10) and the washers. Install the
cotter pins (5 and 9).
13. Loosen the lock nuts (7b) to their original position on the
spring retainer bars.
Adjustment
1. Pre-load the spring (3) to Dimension A with the pressure
roller (2) against the drum barrel (see View B).
2. Use washers (8) to center support the pressure roller
arms (12) from inside the drum flange to Dimension B
(see View C).
3. To aid in lining up the spring pin holes, align scribed
marks on the rollers and the shaft (see View C).
Drum 5
See Figure 5-41 for the following procedures.
Weekly Maintenance
1. Watch the pressure rollers (2) while paying out and
hauling in the wire rope on the drum (1). The springs (3)
must hold the pressure rollers firmly against all layers of
wire rope on the drum—from the first layer to the last
layer.
2. If necessary, increase the tension of the springs by
tightening the lock nut (7a).
Spring Replacement
1. Attach lifting slings from a hoist to the pressure roller
assembly. The pressure roller assembly weighs 185,7
kg (409.4 lb).
2. Remove the spring load from the pressure roller by
tightening the lock nuts (7b) against the plates (11).
3. Remove the cotter pins (5 and 9). Remove the pins (6
and 10) and the washers (8).
4. Remove the pressure roller assembly from the drum
assembly.
5. Unload the springs by loosening and removing the lock
nuts (7b).
6. Remove the spring retainer bars (4).
7. Remove the old springs (3) and replace with new
springs.
8. Install the spring retainer bars.
9. Tighten the lock nuts (7b) against the plates until the
components can be assembled.
10. Attach lifting slings from a hoist to the pressure roller
assembly. The pressure roller assembly weighs 185,7
kg (409.4 lb).
11. Lift the pressure roller assembly into position at the
plates on the drum assembly.
12. Install the pins (6 and 10) and the washers (8). Install the
cotter pins (5 and 9).
13. Loosen the lock nuts (7b) to their original position on the
spring retainer bars.
Adjustment
1. Pre-load the spring (3) to Dimension A with the pressure
roller (2) against the drum barrel (see View B).
2. Use the washers (8) to center support the pressure roller
arm (12) from inside the drum flange to Dimension B
(see View C).
3. To aid in lining up the spring pin holes, align scribed
marks on the rollers and the shaft (see View C).

Manitowoc MLC650 Specifications

General

Brand	Manitowoc
Model	MLC650
Category	Construction Equipment
Language	English