SECTION V: TROUBLESHOOTING
Remove all jewelry such as rings, dog tags,
bracelets, etc. If jewelry contacts a metal
surface a direct short may result in instant
heating of tools, damage to equipment,
and injury or death to personnel.
Reconnect wire 27A to engine oil pressure gage.
Disconnect wire 36 from engine oil pressure gage. Turn
MASTER switch on and check engine oil pressure
gage for operation. Engine oil pressure gage should
read "0." Ground case of engine oil pressure gage and
check gage for operation. Gage should read full scale.
Turn MASTER switch OFF. If engine oil pressure gage
reads correctly, go to step D. If engine oil pressure
gage fails to read correctly, replace engine oil pressure
gage (see paragraph 6-8).
Disconnect gage panel to bulkhead wiring harness
from gage panel. Check wire 36 in gage panel harness
for continuity by placing red lead of multimeter on wire
36 and black lead on pin D. If continuity is present, go
to step E. If continuity is not present, repair/replace
wire 36 of gage panel wiring harness (see paragraph
Reconnect wire 36 to engine oil pressure gage and
gage panel to bulkhead wiring harness to gage panel.
Install ground strap (5), two lockwashers (4), two
screws (3), gage panel (6), three lockwashers (2), and
three screws (1) to mounting brackets. Open air inlet
doors (TM 9-2350-256-10). Disconnect bulkhead to
engine bracket and rear fuel tank wiring harness from
bulkhead disconnect. Place red lead of multimeter in
socket L of wire 36 and black lead to ground. Turn
MASTER switch or and check for voltage. Turn
MASTER switch OFF. If voltage is present, go to step
F. If voltage is not present, repair/replace wire 36 of
gage panel to bulkhead wiring harness (see paragraph
6-45 for dual voltage; 6-46 for single voltage).