TM-5-2330-378-14-P

SEMITRAILER, LOWBED: 40 TON CONSTRUCTION EQUIPMENT TRANSPORTER M870 AND M870A1

TECHNICAL MANUAL; OPERATOR'S, UNIT, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL (INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST)

JUNE 1999

TM-5-2330-378-14-P - Page 213 of 524

TM5-2330-378-14&P

4-58. EMERGENCYRELAYVALVE REPLACEMENT,OPERATINGTEST,AND LEAKAGE

TEST (M870).

This Task Covers:

a.

Removal

b.

Installation

c.

Operating Test

d.

Leakage Test

Initial Setup:

Tools/Test Equipment:

Equipment Conditions:

- Tool kit, general mechanic's: automotive

- Planks removed from stowed position (para 2-8).

(item

7, Appendix

B)

Materials/Parts:

• Detergent

(item 4, Appendix

F)

• Tape, antiseizing (item 21, Appendix F).

a.

REMOVAL

3

1

Open drain cocks (para 3-8).

FRONT AIR

2. Tag and disconnect five air hoses (1) to

RESERVOIR

emergency relay valve (2).

3.

Remove emergency

relay valve (2) from front

air reservoir (3).

b. INSTALLATION

EMERGENCY

1 .

Install emergency relay valve (2) on front air

RELAY VALVE

reservoir(3).

2

2.

Connectfive airhoses (1)to emergency relay

valve(2).

3.

Close drain cocks (para 3-8).

2

FRONT

4-125