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WATER PUMP ENGINE PRESSURE GOVERNOR CONTROL PANEL DOES NOT OPERATE PROPERLY - Continued
WATER PUMP ENGINE PRESSURE GOVERNOR CONTROL PANEL DOES NOT OPERATE PROPERLY - Continued

Maintenance Manual For Tactical Fire Fighting Truck (Tfft) Model M1142 - 2 Page Navigation
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DRAFT
TM 5-4210-249-13&P-2
0146
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
TFFT04387
Step 12.
Install circuit breaker P6 (WP 0412). Remove relay P4 from pump house power
distribution block. With a test lead set, check for continuity across wire 1118 from relay
P4 terminal 5 to pump house power distribution wire harness connector DP2,
terminal A.
If continuity is not present, repair wire 1118 in pump house power
distribution wire harness if repairable (TM 9-2320-325-14&P), or replace
pump house power distribution wire harness and block (WP 0457).
Step 13.
Connect pump operator's panel wire harness pump house power distribution wire
harness connector DP2. Turn battery disconnect switch to ON position (WP 0007).
With a test lead set, check for 22 to 28 VDC from wire 1119 at relay P4, terminal 3 to a
known good ground.
a.
If 22 to 28 VDC are present, replace relay P4 (WP 0413).
b.
If 22 to 28 VDC are not present, repair wire 1119 in pump house power
distribution wire harness if repairable (TM 9-2320-325-14&P), or
replace pump house power distribution wire harness and
block (WP 0457).
END OF TASK
0146-10


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