15
PROCEDURE FOR DETERMINING THE
CONDITION OF CLUTCH LUGS:
There is normally a “negative draft” angle on the load bear-
ing faces of the clutch and clutch plate to prevent clutch
disengagement under load. In addition to visual inspec-
tion of the clutch surfaces, the following procedure may be
used to ensure that the clutch cannot inadvertently disen-
gage under load:
1. Fully engage the clutch (as previously described).
2. Power approximately 10 ft. (3 m) of wire rope off the
drum.
3. Power in very slowly while holding slight pressure on
the wire rope to eliminate any slack in the wire rope
and the power train. This slight pressure and no-slack
condition must be maintained throughout this proce-
dure.
4. Stop the winch with the clutch fully engaged, leaving
approximately 3 ft. (1 m) of wire rope extended beyond
the drum.
5. Mark one line on or near the tip of the drum fl ange
nearest the gear housing, and a second line on the
gear housing adjacent to the fi rst.
6. While maintaining tension on the wire rope, SLOWLY
disengage the drum clutch and observe the marked
lines. The drum fl ange should move 1/16 – 5/16 in.
(1.5 – 8 mm) in the haul-in direction. If the drum moves
LESS than 1/16 in. (1.5 mm), or if the drum rotates
in the opposite direction, the winch should be disas-
sembled and the clutch components visually inspected
for wear and/or damage and replaced as needed. The
drum clutch should be routinely inspected using this
procedure.
PARTIALLY ENGAGED CLUTCH
DANGEROUS!
DO NOT OPERATE WINCH
FULLY DISENGAGED CLUTCH
WIRE ROPE MAY BE PULLED OFF OF WINCH CABLE DRUM
BY HAND.
BEARING
LEG
Clutch fully
seated against
bearing leg
CLUTCH
ENGAGED CLUTCH
WINCH MAY BE OPERATED UNDER LOAD.
CLUTCH
DRUM
Clutch fully
seated against
drum
Summary of Contents for BRADEN HP125B
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