TM-9-2320-387-24-2

TRUCK, UTILITY: S250 SHELTER CARRIER, 4X4, M1113

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE, VOLUME 2

DECEMBER 1997

CHANGE 1

TM-9-2320-387-24-2 - Page 912 of 1555

TM 9-2320-387-24-2

1 25-l 5.

A/C

SYSTEM SERVICING

(Cont’d)

I

a. hlanifold Gauge Set Installation

1.

Turn high-pressure

gauge valve (2) and low-pressure

gauge valve (1) on manifold

gauge set (3)

clockwise to seated (closed) positions.

2.

Remove two caps (61 from service ports (7) and (8).

WARNING

Ensure

hand valves on manifold gauge are in closed position

during connection

and hoses are clear of any moving parts in

engine compartment.

Injury to personnel

or damage to equipment

may result.

3.

Connect low-pressure

gauge hose (51 on manifold

gauge set (3) to suction

(low side) service port (8).

4.

Connect high-pressure

gauge hose (41 on manifold gauge set (31 to discharge

(high side) service port (7).

5.

Hang manifold

gauge set (3) so hoses (4) and (5) are well away from moving engine parts.

NOTE

Do not perform

step 6 if system is already

evacuated.

High- and

low-pressure

hoses must be purged with R-134a for charging

purposes

(refer to task f.).

6.

Slightly loosen low-pressure

gauge hose (5) and high-pressure

gauge hose (4) at manifold gauge set (3)

to purge air from hoses, then tighten.

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