TM 5-3805-280-24-1
Sub-System Diagnostics
HYDRAULIC OIL LEVEL
Disconnect harness from hydraulic oil level switch.
YES: Hydraulic oil level
SWITCH (B5) CHECK
switch has failed.
Connect a jumper wire between harness connector pins.
Replace.
Turn key switch ON.
NO: Check wiring
harness.
Push fluid level check switch.
Does hydraulic oil level indicator come ON?
T7470AJ
UN05MAR91
1/1
Turn key switch ON.
YES: Indicator is OK. Go
HYDRAULIC OIL FILTER
to next check.
RESTRICTION
9015
INDICATOR LIGHT (H21)
Observe hydraulic oil filter restriction indicator.
15
CHECK
NO: If indicator does not
61
come ON, check indicator
Does indicator come ON when key switch is turned ON, then go OFF 2--3 seconds
lamp.
later?
If indicator does not go
OFF, go to next check.
1/1
HYDRAULIC OIL FILTER
YES: Hydraulic oil filter
RESTRICTION SWITCH
restriction switch has
(B30) CHECK
failed. Replace.
NO: Check harness.
T118382 UN21NOV98
Disconnect two harness leads from hydraulic oil filter restriction switch.
If indicator was ON, did it go OFF with leads disconnected and key switch ON?
If indicator was OFF, connect two harness leads together.
Does indicator come ON?
1/1
4-126