TM-5-4210-249-13-P-2

TACTICAL FIRE FIGHTING TRUCK (TFF) MODEL M1142

TECHNICAL MANUAL; OPERATOR’S AND FIELD LEVEL MAINTENANCE MANUAL WITH REPAIR PARTS AND SPECIAL TOOLS LIST (INCLUDING DEPOT REPAIR PARTS AND SPECIAL TOOLS); PART 2 OF 4

TM-5-4210-249-13-P-2 - Page 128 of 1452

TM 5-4210-249-13&P-2

0131-8

DRAFT

0131

TFFT03555

Step 10.

Turn battery disconnect switch to OFF position (WP 0007).

Install relay 13 on cab

power distribution block (WP 0402).

Open ladder rack control panel (WP 0010).

Turn

battery disconnect switch to ON position (WP 0007).

Check for 22 to 28 VDC between

wire 1820 (red) from POWERED EQUIPMENT RACK MASTER switch, terminal to a

known good ground.

If 22 to 28 VDC are not present, go to Step 15.

Step 11.

Put POWERED EQUIPMENT RACK MASTER switch to ON position (WP 0011).

Check for 22 to 28 VDC between wire 1821 (black) from POWERED EQUIPMENT

RACK MASTER switch terminal to a known good ground.

If 22 to 28 VDC are not present, replace POWERED EQUIPMENT RACK

MASTER switch (WP 0389).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION