TM-5-4210-249-13-P-4

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 4 OF 4

FEBRUARY 2009

TM-5-4210-249-13-P-4 - Page 263 of 1012

TM 5-4210-249-13&P-4

0606-1

DRAFT

0606

FIELD LEVEL MAINTENANCE

PIPING HEAT TRACE REPLACEMENT

INITIAL SETUP:

REMOVAL

CAUTION

•

Do not cut heat trace cable when removing or installing.

Damage to electrical wires

in heat trace cable may occur.

•

Do not bend heat trace cable to less than 1 in. (25.4 mm) radius.

Damage to

electrical wires in heat trace cable may occur.

NOTE

•

Access heat trace cable junction box in pump house.

•

Pipe heat trace circuit starts at junction box and heat trace cable is taped to water pipes.

•

Sections of heat trace cable can be replaced between splice connectors.

•

Remove required panels to access heat trace cable to be replaced.

•

Remove insulation from pipes to access heat trace cable.

•

Remove cable ties as needed.

•

Tag and mark wires prior to removal to ensure proper installation.

•

Perform Steps (1) through (6) to remove heat trace cable from terminal in junction box.

•

Use care when removing insulation.

Do not cut heat trace cables.

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Tools and Special Tools

Tool Kit, General Mechanic’s: Automotive

(WP 0622, Item 27)

Materials/Parts

Heat Trace 120 V (WP 0625, Item 27)

Tags, Identification (WP 0625, Item 51)

Tape, Heat Trace, Aluminum (WP 0625, Item 54)

Tape, Heat Trace, Glass (WP 0625, Item 55)

Ties, Cable, Plastic (WP 0625, Item 58)

Lockwasher (3)

Reference

WP 0615, Fig. 181

Equipment Conditions

Water pump engine OFF (WP 0022)

Engine OFF (TM 9-2320-347-10)

Wheels chocked (TM 9-2320-347-10)