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 274 of 828

TM 9–2350–311–20–2

5–18

5–7

SPINDLE ASSEMBLY — CONTINUED

d.

Installation

1

Install the following on spindle (19): front retaining ring (24), obturator pad (23), inner retaining ring (22), rear

retaining ring (21), and washer bearing (20). Make sure that retaining rings (21 and 24) are alined 180

°

apart as shown.

2

Install spindle assembly (18) in breechblock (1).

3

Support housing (17) and firing group block (4). Install nut (8) using spanner wrench.

NOTE

Cartridge extractor is located inside firing group block.

4

Position cartridge extractor (16) over nut (8).

18

1

19

24

23

22

21

20

8

17

4

16