Ramsey Winch HDG-350 (JERR-DAN) {CURRENT} - Manual (Page 8)

WORM BRAKE MAINTENANCE
BRAKE ADJUSTMENT
The oil cooled, fully adjustable, automatic
safety brake operates in the worm housing
lubricant, all parts being submerged in oil.
When the brake wears to the point that the
load begins to drift, the brake can be
adjusted as follows:
1. Loosen the lock nut on the adjusting
screw.
2. Tighten the brake by turning the adjust-
ing screw clockwise. CAUTION: Only
1/4 turn is usually required to adjust the
brake. Over-tightening can cause over-
heating, and damage to the brake parts.
Tighten the lock nut after adjustment is
completed.
If the brake does not respond to adjust-
ment then a new leaf spring and brake
disc is needed.
A torque wrench can be equipped with a
special adapter to fit the input shaft
(worm) of the winch. The adapter can be
made by welding a nut to the end of a
piece of tubing as shown in the figure at
right.
After welding the cap and nut to the tub-
ing, slot the tubing, as shown. This will
allow the special adapter to slide over the
keyway and will then act as a large sock-
et. A torque wrench can then be used to
apply the proper torque.
Turn the torque wrench so that the drum
turns in the spool out direction or lowering
direction. The torque rating for the Model
HDG-350 should be 9-15 ft-lbs. (15-20
Nm), If torque wrench does not show the
proper value as it turns, then the worm
brake adjusting bolt should be turned
clockwise 1/4 turn. Each time the adjust-
ing bolt is turned, checked the torque
reading. Continue this procedure until the
proper torque reading is achieved. Then
tighten the lock nut.
SERVICING THE BRAKE
Refer to the Worm Brake Diagram on the
following page while following these
instructions.
1. Back off the lock nut, then the adjusting
screw, both two turns or more by turn-
ing them counter-clockwise.
2. Remove the cover mounting screws.
3. Remove the cover along with coil
spring and leaf spring.
4. Remove the retainer plate, composition
brake disc, cam plate and balls. Note
which slots balls are in.
5. Inspect parts as follows:
a) Composition brake discs are 1/8"
thick when new. Replace if thinner
than 0.080” or if surfaces are glazed
or burnt.
b) Inspect the flat, ground surface of
the cam plate and retainer plate for
glazing, warpage, or other damage.
Glazing can be removed by scraping
carefully.
c) Inspect the leaf spring. It should be
bowed 1/8".
ADAPTER
NUT
TUBING
CAP
SOCKET
8