Manitowoc National Crane 1300A - Section 5; Hoist Description

National Crane 01-22-2019 Control # 051-08 5-1
1300A HOIST
5
SECTION 5
HOIST
SECTION CONTENTS
Hoist Description . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Hoist Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Warm-up Procedure . . . . . . . . . . . . . . . . . . . . . . . 5-2
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Hydraulic Hoses . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Hoist Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Drum Rotation Indicator. . . . . . . . . . . . . . . . . . . . . 5-3
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Programming the Minimum Wrap Indicator . . . . . 5-4
Shipping Mode (Series A Only). . . . . . . . . . . . . . . 5-5
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
For Series “A” . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Series “B” Circuit Breaker Reset Instructions . . . . 5-5
Hoist Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Hoist Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
Brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
Planetary Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
HOIST DESCRIPTION
The 1300A hoist is composed of motor control valve, a fixed
displacement gear hydraulic motor, a multiple disc brake,
and a pair of planetary gear sets.
The multiple disc brake is spring applied and hydraulically
released through a port in the brake housing. An overrunning
clutch allows the hoist to be raised without releasing the
brake while at the same time holding the load until there is
sufficient pressure to release the brake when hoisting down.