TM-9-2330-267-14-P

TRAILER, TANK, WATER: 400 GALLON, 1-1/2 TON, 2 WHEEL M149, M149A1 AND M149A2

TECHNICAL MANUAL; OPERATOR’S, ORGANIZATIONAL, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL (INCLUDING REPAIR PARTS AND SPECIAL TOOLS LISTS)

JULY 1991

TM-9-2330-267-14-P - Page 128 of 354

TM 9-2330-267-14&P

4-42. RELAY VALVE REPLACEMENT.

This Task Covers:

a.

Removal

b. Installation

Initial Setup:

Equipment Conditions:

Materials/Parts:

l Air lines and fittings disconnected from relay valve

l Marker tags (Item 25, Appendix E)

(para 4-37 or 4-38).

l Antiseize tape (Item 26, Appendix E)

Tools/Test Equipment:

l General mechanic’s tool kit

a.

REMOVAL

NOTE

The M149 relay valve is Installed on frame with three screws and nuts. The M149A1 or

M149A2 is installed directly on air reservoir. Step 1 is for M149A1 or M149A2 only.

1.

Remove relay valve (2) and nipple (3) from air reservoir (4).

2.

Remove two elbows (1) from relay valve (2).

3.

Remove nipple (3) from relay valve (2).

TA507043

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