TM 5-3895-346-14
TROUBLESHOOTING
HYDROSTATIC SYSTEM
CAUSE
INDICATED BY
REMEDY
(6) Record the amount of
flow in gallons per minute
out the motor case drain
line.
If the amount of flow is more
than 50% of the charge pump
flow, the motor is damaged
and must be replaced.
It is recommended if the
motor is damaged that the
pump also be replaced.
NOTE
The amount of charge
pump flow may be de-
termined by the fol-
lowing formula:
Charge Pump Flow = Charge Pump Displ. x Pump Speed x 0.92
(GPM)
231
If the motor is not damaged,
the pump is faulty and must
be replaced.
2. Replace pump or motor or
both. (Refer to Repair
Procedure.)
H.
Disconnected
Neutral charge pres-
1. Disconnect control link-
control valve
sure will be main-
age at directional control
internal
tained, but pump will
arm. Move control arm back
linkage
not go into stroke.
and forth by hand. If it
Handle moves freely
moves freely with no resis-
tance, the control valve
should be removed and checked
for broken or missing parts.
(Refer to Repair Procedure.)
J.
Plugged control
Neutral charge pres-
1. Remove the bolts that
orifice
sure will be normal
hold the control housing to
but pump will not go
pump and check the orifice.
into stroke
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