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 750 of 1188

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

0104-42

DRAFT

0104

TFFT02880

WARNING

ICON 3

Remove rings, wristwatches, neck chains, and any other jewelry before working

around vehicle.

Jewelry can catch on equipment and cause serious injury.

Jewelry

and tools may short across electrical circuits and cause damage to equipment, or

severe burns or electrical shock to personnel.

Step 62.

Put bumper turret control POWER switch to

{

(off) position (WP 0004).

Turn battery

disconnect switch to OFF position (WP 0007).

Remove bumper turret junction box

cover (WP 0572).

Check for continuity across bumper turret position sensor ground

wire (blue) from bumper turret junction box 9-pin terminal strip, terminal 5 to a known

good ground.

If there is no continuity, go to Step 69.

Step 63.

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

Put bumper turret control

POWER switch to

|

(on) position.

Put OSCILLATION switch to

|

(on)

position (WP 0004).

Set OSCILLATION LIMITS control knobs to maximum left and

right limits (WP 0004).

Check for 7 to 9 VDC between bumper turret position sensor

power wire (yellow) at bumper turret junction box 9-pin terminal strip, terminal 3 and a

known good ground.

If 7 to 9 VDC are not present, go to Step 67.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION