BRADEN CH SERIES Installation Maintenance And Service Manual page 14

TROUBLE
B
Oil leaks from vent plug.
C
The brake will not hold a load with the
control lever in neutral.
D
The winch will not hoist the rated load
PROBABLE CAUSE
1. Same as A2.
2. Motor seal may be defective as a
result of high system back pres-
sure or contaminated oil.
1. Excessive system back pressure
acting on the brake release port.
2. Friction brake will not hold due to
worn or damaged brake discs.
3. Brake clutch is slipping.
1. The winch may be mounted on an
uneven or flexible surface which
causes distortion of the winch
base and binding of the gear
train. Binding in the gear train will
absorb horsepower needed to
hoist the rated load and cause
heat.
2. System relief valve may be set
too low. Relief valve needs
adjustment or repair.
12
REMEDY
Same as A2.
System back pressure must not
exceed 150 psi.
hydraulic system for a restriction
in the return line from the control
valve to the reservoir. Be sure
control valve and plumbing is
properly sized to winch motor.
Oil analysis may indicate contam-
ination has worn motor shaft and
seal. Thoroughly flush entire
hydraulic system and install new
filters and oil. Install new motor
seal.
The same as Remedy 2 of
Trouble B2.
Same as Remedy 3 of Trouble
A3.
Improper planetary gear oil may
cause the brake clutch to slip.
Drain old gear oil and flush winch
with solvent. Thoroughly drain
solvent and refill winch with rec-
ommended planetary gear oil list-
ed in "Preventive Maintenance".
Brake clutch may be damaged or
worn. Disassemble and inspect
brake clutch as described in
"Brake Clutch Service".
Reinforce mounting surface.
If necessary, use shim stock to
level winch. Refer to "Winch
Installation".
First loosen, then evenly retight-
en all winch mounting bolts to
recommended torque.
Check relief pressure as follows:
A. Install an accurate 0-4000 psi
gauge into the inlet port of the
brake valve.
Inspect