TM-5-4210-249-13-P-1

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 1 OF 4

TM-5-4210-249-13-P-1 - Page 756 of 1188

TM 5-4210-249-13&P-1

0104-48

DRAFT

0104

TFFT02889

NOTE

Voltage while performing Step 73 will switch from negative VDC to VDC when bumper

turret control is in oscillation.

This is normal operation.

Step 73.

Turn battery disconnect switch to OFF position (WP 0007). Install bumper turret control

cover and tighten four screws.

Remove bumper turret junction box cover (WP 0573).

Disconnect bumper turret motor power wire (red) from bumper turret junction box 9-pin

terminal strip (WP 0573).

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

Put bumper turret control oscillation switch to on position (WP 0004).

Check for 22 to

28 VDC between bumper turret motor power wire (red) at bumper turret motor power

wire (black) at bumper turret junction box 9-pin terminal strip, terminal 1 to terminal 2.

If there is 22 to 28 VDC, go to Step 78.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION