PAGE 17
247 REV.981101
SERVICE INSTRUCTIONS CONTINUED
8) Install brake spacer, item 712, into brake housing, item 700. Starting and finishing with a divider plate,
alternately install five divider plates, item 714, and four friction plates, item 715.
9) Install new, well-greased O-rings, item 751 and 753, into the glands of piston, item 750. Carefully install brake
piston in the brake housing.
10) Install 16 brake springs, item 752, into the brake piston, item 750.
11) Use grease to temporarily hold a new O-ring, item 801, into recess on the flange of motor adaptor, item 800.
Install a new, well-greased O-ring item 707, onto motor adaptor pilot.
12)
Position motor adaptor, with the brake release pressure transfer holes of the motor adaptor and brake housing
aligned. Tighten 12 capscrews, item 821, and lockwashers, item 823, one turn at a time to evenly compress springs.
13) Attach base, item 550, to winch using 12 capscrews, item 551, and 12 lockwashers, item 553.
14) Lower winch to horizontal position, on base, and re-install breather relief valve, item 130.
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
DANGER
5) Press new, well-greased oil seal, item 515, into cable drum.
6) Install primary sungear, item 440, into center of three primary planet gears, item 420. Ensure gear teeth are
fully engaged by rotating cable drum.
REASSEMBLY OF BRAKE HOUSING ASSEMBLY:
Reassemble brake housing assembly by reversing the disassembly procedure:
1) If needle bearing, item 603, was removed from center of connecting shaft, item 600, press back into place.
2) Press a new, well-greased oil seal, item 607, into connecting shaft, item 600. If a back-up washer is included
in your seal kit, it should be installed together with and behind the oil seal.
3) Install new, well-greased O-ring, item 601, onto connecting shaft.
4) Insert connecting shaft into brake housing, item 700. Slightly rotate drum to allow spline of connecting shaft
to fully engage with internal gear, item 430.
5) Install sprag clutch, item 723, and sprag clutch spacer, item 726, into the bore of brake hub, item 720. Position
sprag clutch aligners, item 722 and 724, and support washers, item 717, on either side of brake hub. Carefully
slide motor drive shaft, item 730, into the brake hub assembly and secure with circlip, item 727. Verify that
circlips, item 719 and 731, are installed on motor drive shaft.
IMPORTANT: For proper brake function, verify that the sprag clutch is installed correctly. When
viewed from the motor end, the motor drive shaft of a clockwise hoisting winch
must turn freely clockwise and lock in the counterclockwise direction.
6) Install thrust bearing, item 617, held between two thrust washers, item 615, into brake housing, item 700, and
centered upon connecting shaft, item 600.
7) Install motor drive shaft assembly through thrust washer, item 615, and carefully twist the shoulder of the shaft
through oil seal, item 607. Twist slightly more to engage spline with primary sungear, item 440.
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