Paccar Winch Braden BA2A, Installation Maintenance And Service Manual, Page: 20 / 35

20
TROUBLESHOOTING
CAUTION
WARNING
! !
If a winch ever exhibits any sign of erratic operation, or load control diffi culties (i.e. load
creeping or chattering), appropriate troubleshooting tests and repairs should be per-
formed immediately. Continued operation in this manner may result in property damage,
serious personal injury or death.
A
The winch will not
lower the load or will
not lower smoothly 1. Clogged brake release air line or a
malfunctioning Quick Exhaust valve.
On units approved for personnel han-
dling, an orifi ce in the elbow fi tting off
of the control valve could be plugged.
2. Defective brake cylinder seal.
3. If the brake was recently rebuilt, the
problem may be improper assembly.
4. Band brake is not properly adjusted or
is dragging on winch drum.
Install a gage into the brake release line down-
stream of the quick exhaust valve and ensure
pressure is greater than 45 psi.
Perform air pressure test. Pressurize the brake
cylinder to 50 – 90 psi. If brake cylinder will not
hold pressure, seal is defective.
Disassemble and inspect the brake. Ensure
proper number of brake plates and friction discs
are used.
Adjust band brake as defi ned in “Band Brake Ad-
justment” section of this manual.
B
Air leaks from the
vent plug 1. Defective brake cylinder seal or motor
shaft seal.
Perform air pressure test. Pressurize the brake
cylinder to 50 – 90 psi and ensure it holds pres-
sure.
If the brake pressure holds, the problem is the
motor shaft seal. Remove the motor for inspec-
tion of the shaft seal.
TROUBLE
PROBABLE CAUSE REMEDY