TM 55-1930-209-14&P-14
Table 2-3. Anchor Winch Troubleshooting (continued)
Condition
Possible Cause
Suggested Action
d.
Hub not clean; discs
d.
Clean system (see CAUTIONS)
don't slide freely
e.
Are controls which
e.
Check input power to solenoid
govern start of braking
cycles operating properly?
f.
Pressure spring may be
f.
Check spring. If broken, replace
improperly assembled or
brake assembly; see para
broken
2-19.3.1
g.
Solenoid air gap adjusted
g.
Check and adjust if needed; see
incorrectly
para 2-19.3.1.2
h.
Solenoid actuation and
h.
Check linkage for binding.
Do
condition of coil
not overlook bent, worn or
broken plunger guides as a
possible cause for binding.
Check voltage at coil if is not
energizing the solenoid. Replace
brake assembly; see para
2-19.3.1.3
4.
If electric brake hums,
a.
Solenoid air gap
a.
Adjust air gap; see para
solenoid pulls in slowly
excessive
2-19.3.1.2
or coil burns out, check
the following:
b.
Low voltage at coil
b.
Check voltage input at coil
c.
Shading coils may be
c.
Replace brake assembly; see
broken
para 2-19.3.1.3
d.
Plunger guides may be
d.
Replace brake assembly; see
excessively worn. Plunger
para 2-19.3.1.3
rubs on solenoid frame
laminations
e.
Solenoid dirty
e.
Clean solenoid (see CAUTIONS)
f.
Solenoid mounting
f.
Tighten screws and set
screws loose
alignment
5.
If electric brake is noisy
a.
Outside diameter of the
a.
Replace brake assembly
during stopping
friction disc(s) rubbing
and check shaft alignment.
on the inside diameter of
File inside diameter to fit
the endplates
b.
Bad motor bearing
b.
Replace motor
6.
Brake heater inoperable
a.
Input power faulty
a.
Test heater;
(no heat)
see para 2-19.3.6
b.
Heat strip defective
b.
Replace heat strip
7.
Chain drive noisy, slips
a.
Out of adjustment
a.
Make adjustment 3/4 in to 1 in.
See para 2-19.3.2
b.
Needs lubrication
b.
Lubricate periodically;
see para 2-19.2
2-15
