TM 5-3895-379-23-1
0069
TROUBLESHOOTING PROCEDURE
SYMPTOM
WATER SPRAY OCCURS ON ONE DRUM ONLY
MALFUNCTION
No Power At Nonfunctioning Water Spray Pump.
CORRECTIVE ACTION
1.
Remove four screws, washers, and cover from each bumper assembly.
2.
Move water spray switch into continuous spray (full back) position.
3.
Turn battery disconnect switch to ON position (TM 5-3895-379-10).
4.
Turn engine start switch to ON position (TM 5-3895-379-10).
5.
Disconnect pump connector from harness connector.
6.
To check front water spray pump connector, touch positive (+) probe of multimeter to harness
connector, pin 1 (wire C922-BR).
7.
Touch negative (-) probe of multimeter to good ground.
8.
To check rear water spray pump connector, touch positive (+) probe of multimeter to pump
connector, pin 1 (wire C923-OR).
9.
Touch negative (-) probe of multimeter to good ground.
10.
Turn engine start switch to OFF position (TM 5-3895-379-10).
11.
Turn battery disconnect switch to OFF position (TM 5-3895-379-10).
a.
If 24 to 28 VDC are measured at water spray pump connectors, replace water spray
pumps (Volume 2, WP 0270).
b.
If 24 to 28 VDC are not measured at water spray pump connectors, perform the following:
(1)
Connect pump connector to harness connector.
(2)
Install cover on bumper assembly with four washers and screws, and go to next
malfunction.
0069-2
03/15/2011Rel(1.8)root(tswp)wpno(T00075)
