TM-9-2350-311-20-2

HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL FOR CAB, ARMAMENT, SIGHTING AND FIRE CONTROL, ELEVATING AND TRAVERSING SYSTEMS AND ASSOCIATED COMPONENTS

DECEMBER 1993

TM-9-2350-311-20-2 - Page 649 of 828

TM 9–2350–311–20–2

Change 2

17–11

2

Inspect manifold assembly (15), air outlets (2), and socket packings for damage. Replace if damaged.

e.

Assembly

1

If necessary for replacement, install spring clip (18.1) on housing and precleaner (16).

NOTE

Be sure particulate filter rests against bulkhead inside housing.

2

Install particulate filter (18) in housing and precleaner (16) so air will flow through it in the direction of arrow

marked on side of particulate filter.

NOTE

Be sure gasket side of gas filter is toward manifold assembly end of

M2A2 air purifier.

3

Install gas filter (17) in housing and precleaner (16) so that it rests against gasket surface of particulate filter

(18).

4

If necessary for replacement, install four protective dust caps (15.1) on manifold assembly (15).

5

Install manifold assembly (15) on housing and precleaner (16) using three new lockwashers (8) and three

machine screws (7).

2

7

8

9

15

17

18

16

15.1

18.1