Pullmaster M6 Series - Brake Housing Assembly Reassembly

PAGE 17
SERVICE INSTRUCTIONS CONTINUED
316 REV.980601
DANGER
REASSEMBLY OF BRAKE HOUSING ASSEMBLY:
Reassemble brake housing assembly by reversing the disassembly procedure:
1) Place brake spacer, item 712, in end housing with flat side facing up.
2) Install new, well-greased O-ring, item 695, onto mounting flange of brake housing, item 700. Fasten brake
housing to end housing using two flat head capscrews, item 693.
3) Install thrust bearing, item 739, with thrust washer, item 737, on either side, into bearing flange, item 530.
4) Install sprag clutch, item 723, into bore of brake hub, item 720. Position sprag clutch aligners, item 722 and
724, on either side of brake hub. Carefully slide primary sungear, item 440, into brake hub assembly and secure
with circlip, item 727.
IMPORTANT: For proper brake function, verify that brake hub rotation is correct. When viewed
from motor end, primary sungear of a clockwise hoisting winch must turn freely
clockwise and lock in the counterclockwise direction.
5) Install primary sungear assembly, carefully twisting shoulder of sungear through oil seal, item 531. Ensure oil
seal is not damaged as sungear is installed.
INCORRECT ASSEMBLY OF THE FRICTION PLATE AND DIVIDER PLATE
STACK WILL REDUCE BRAKING CAPACITY AND ALLOW THE LOAD
TO DROP, CAUSING PROPERTY DAMAGE, SEVERE INJURY OR
DEATH. REASSEMBLE PER INSTRUCTIONS.
6) Starting and finishing with divider plate, alternately install five divider plates, item 713, and four friction plates,
item 715.
7) Install new, well-greased O-ring, item 751, into brake housing and new, well-greased O-ring, item 753, into
piston gland. Carefully install brake piston in brake housing. Rotate piston to align connecting tube hole with
corresponding hole in motor.
8) Install six brake springs, item 752.
9) Install new, well-greased O-ring item 539, onto motor adaptor flange, item 800.
10) Position motor adaptor with hydraulic motor mounting holes horizontal and connecting tube holes of piston and
motor adaptor aligned. Tighten eight capscrews, item 931, and lockwashers, item 933, one turn at a time to
evenly compress springs.