TM 5-3810-307-24-1-1
Direct/General Support Troubleshooting - Continued
SYMPTOM
PROBABLE CAUSE
CORRECTIVE ACTION
7. Bursting of fluid supply -
Excessive pressure.
If high inertia load overruns motor,
inlet or outlet lines.
relief valve protection is required in
one or possibly both lines between
directional valve and motor. Use
closed center valve with caution.
Relief valve protection probably
required as described above.
8. Excessive noise.
Worn or damaged internal parts.
Disassemble motor, inspect for
excessive wear, and replace worn
parts. Check condition of faces on
port plate and end cap. Rework
(lap) or replace if scuffed.
DIESEL HEATER
1. Heater fails to start -
Defective motor.
Check motor and replace if
motor does not run.
necessary.
2. Heater fails to start -
a. No spark.
motor runs.
WARNING
Use insulated tools and take
care to prevent contact with
the high tension lead. High
voltage is present which
could cause personal injury.
CAUTION
If the high tension lead is
disconnected
from
the
igniter for any reason, do
not energize the heater
without first providing a
discharge gap of 0.125 in.
(3.18 mm) or less from the
high tension lead to the
grounded igniter. With a
larger
gap,
electrical
potential can cause an
insulation breakdown in the
ignition pack or in the high
tension lead. The same is
true if the high tension lead
is attached to the igniter,
with the igniter removed
from the unit.
Always
ensure the igniter body is
grounded.
1-5-31
