TM 5-3895-346-14
HYDROSTATIC SYSTEM
TROUBLESHOOTING
CAUSE
INDICATED BY
REMEDY
CAUTION
Do not allow the ori-
fice or O-rings to
fall into the pump
case.
(Refer to Repair Procedure.)
K.
Rotary bypass
Loss of system pressure
1. Close rotary valve.
valve, if used,
in both directions
open (located
on motor manifold
Charge pressure will be
assembly)
normal; system tempera-
ture will be higher
than normal
L.
If pressure over-
Charge pressure will be
1. Readjust valve to proper
ride valve is
normal
setting.
used, adjusted
too low, check
If adjusted too low,
2. Remove valve and repair
ball missing,
system pressure will
or replace. (Refer to
or broken parts
be lower than normal
Repair Procedure.)
If check ball is mis-
sing, system will not
develop pressure
If broken parts, system
pressure would be low
or erratic
II.
SYSTEM OPERATES IN ONE DIRECTION ONLY
CAUSE
INDICATED BY
REMEDY
A.
Faulty control
1. Check the entire link-
linkage
age to make sure it is con-
nected and free to operate
as it should. Adjust link-
age to the pump arm. DO
NOT move pump arm to linkage.
2. Make sure the control-
stop, if used, is not out of
adjustment.
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