..
.
TM 5-5420-226-20-1
DETAILED
TROUBLESHOOTING
PROCEDURE
Symptom-13
VEHICLE
OPERATION
- POWERPLANT,
RUNNING
BOTH AIR CLEANER
BLOWER
FANS IN ONE AIR CLEANER
ASSEMBLY
This procedure is to be performed by
two
persons. The
lead person
is
referred to as the first technician and
shall direct the activity of the second
person called the second technician.
.
I
Check rear accessory harness (CKT 415B), at
inoperative air cleaner for electrical pawer.
First Technician (Top Deck)
l Open top
deckgrille doors at inoperative air cleaner.
l Disconnect rear accessory harness connector (CKT
4 15B) at inoperative air cleaner,
l Set multimeter to measure 18 to 30 volts dc or use STE/
ICE Test No. 89 (page 4-81).
l Connect red probe of meter to rear accessory harness
connector
(CKT 4 15B) at inoperative air cleaner and
black probe to ground.
Second Technician
(Operator’s Station )
l Start engine and run at idle.
First Technician
(Top Deck)
l Check if meter indicates 18 to 30 volts dc.
,Does meter indicate 18 to 30 volts dc?
!
m
Olg$iij$:
“
.-
~’-
-.
0-
9
l
0
TO VEHICLE
GROUND
(CKT415B)
AIR CLEANER
!
INLET
(RIGHT
SIDE SHOWN)
Check front accessory harness
(CKT 415B) at bulkhead
ID
r
disconnect for electrical power.
NO
See Step @
.
TA106974
.
#
4-285
