Ramsey Winch HDG-350 (JERR-DAN) (NOT CURRENT) - Manual (Page 7)

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 adjust-
ed as follows:
1. Loosen the lock nut on the adjusting
screw.
2. Tighten the brake by turning the adjusting
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 adjustment
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 tubing,
slot the tubing, as shown. This will allow the
special adapter to slide over the key-
way and will then act as a large
socket. A torque wrench can the 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 rat-
ing 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 adjusting
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 fol-
lowing page while following these instruc-
tions.
1. Back off the lock nut, then the adjusting
screw, both two turns or more by turning
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
7