HOIST SERVICE
FOREWORD TO HOIST SERVICE
Before any part is removed from the hoist, all service
instructions should be read and understood.
Work in a clean, dust free area as cleanliness is of utmost
importance when servicing hydraulic equipment.
Inspect all replacement parts, prior to installation, to
detect any damage which might have occurred in ship-
ment.
Use only genuine BRADEN replacement parts for opti-
mum results. Never reuse expendable parts such as oil
seals and O-rings.
Inspect all machined surfaces for excessive wear or dam-
age…before reassembly operations are begun.
Lubricate all O-rings and oil seals with gear oil prior to
installation.
Use a sealing compound on the outside surface of oil
seals and a light coat of thread sealing compound on pipe
threads. Avoid getting thread compound inside parts or
passages which conduct oil.
Thoroughly clean all parts in a good grade of non-flamma-
ble safety solvent. Wear protective clothing as required.
Refer to exploded view drawing for item numbers used in
service procedures.
• Perform all applicable trouble shooting operations
BEFORE disassembling hoist.
HOIST DISASSEMBLY
1. Disconnect all hoses and fittings at the hoist.
2. Stand the hoist on the bearing support plate. Remove
the brake release tube assembly (59) between the
brake valve block and the brake cylinder end plate.
Remove the capscrews and lockwashers which
secure the motor to the motor adapter, and lift the
motor out of the motor adapter. Remove and discard
the O-ring installed on the pilot of the motor.
3. Remove the overrunning clutch assembly (100) and
sun gear (70) from the hoist.
4. Remove six capscrews (33 & 34) from the the base
(1), remove brake cylinder assembly.
5. Lift out primary sun gear (70). Then lift out cable drum
closure (3).
6. Lift out primary planetary gear assembly (300), fol-
lowed by removing the output planetary assembly
(400). Thrustwashers (20 & 39) are set between pri-
mary planetary gear and output planetary gear.
These are not secured and may fall out upon removal
of planetary assemblies.
7. Stand hoist assembly on motor mount flange and
remove six drum support capscrews (33, 34, 53, &
54). Removee drum bearing support (21). Drum can
now be lifted from base. Drum bearing and seal (27
& 28) are pressed into drum enclosure.
16
DO NOT CLEAN BRAKE FRICTION DISKS IN SOL-
VENT. SOLVENT MAY CAUSE DAMAGE TO FRIC-
TION MATERIAL WHICH MAY RESULT IN BRAKE
FAILURE AND LOSS OF LOAD CONTROL.
Summary of Contents for BRADEN Gearmatic BG6A
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