Worm brake, Diagram 1, View a-a – Ramsey Winch H-930R DOW-LOK w/Air Shifter for Szummar User Manual

Page 8

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RE-ASSEMBLING AND CHECKING THE BRAKE

1. Press brake hub into place over worm shaft and key.

2. Assemble balls in slot #1 of cam. Use stiff grease to hold balls in place and slide cam over end of worm. Be sure that

balls are secure, between cam slots and hub slots.

3. Install brake disc.

4. Install retainer plate, smooth side toward brake disc.

5. Install the gasket on the cover with a small amount of grease or sealer.

6. The coil spring goes over the adjusting screw on the inside of the cover.

7. Install the notches of the leaf spring on the pins protruding through the cover. The hollow side of the leaf spring goes

toward the brake.

8. Install brake housing cover, making sure the protruding pins go through the leaf spring and into the holes in the retainer

plate.

9. Bolt cover into place with the mounting screws. Apply Loc-tite PST #567 thread sealer to drain plug, install drain plug and

add 4 pints all purpose SAE 140 EP gear oil. Refer to Instructions for Overhaul for more information on assembling winch.

10. Turn winch in the hoisting direction at least one turn of the input shaft.

11. Turn the adjusting screw in until it is finger tight. Tighten jam nut to lock adjusting screw.

TEST FOR PROPER BRAKE ASSEMBLY

After the brake has been adjusted to the proper torque setting disengage clutch. Start vehicle engine and run winch in the reel
in (hoisting direction). Allow winch to run in this direction for one minute.

Place your hand on the safety brake housing. If housing is not hot to the touch then run winch in the reverse direction (cable
out) for one minute. Brake housing should begin to heat.

When these conditions exist, proper installation has been made. If heating becomes noticeable when running the winch in for-
ward rotation (hoisting direction), the brake should be again disassembled. When disassembled, confirm that the balls are in
slot #1 of cam, then carefully follow the instructions for re-assembling and checking the brake.

WORM BRAKE

LEAF SPRING

COIL SPRING

BRAKE HOUSING

COVER
MOUNTING
SCREW

ADJUSTING
SCREW

DIAGRAM 1

BRAKE COVER

THREAD SEAL

JAM NUT

RETAINER PLATE

CAM PLATE

GASKET

PIN

A

BRAKE DISC

(LOOKING AT CAM

PLATE FROM WINCH)

VIEW A-A

1

2

1

2

COMPOSITION

A

BALL

HUB

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