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 592 of 828
TM 9–2350–311–20–2
14–28
Change 3
14–8 BUSTLE DOOR ASSEMBLIES, LEFT AND RIGHT — CONTINUED
b.
Disassembly — Continued
NOTE
Clean dirt and old adhesive from seal seats and from areas where pads are removed.
7
Remove seal (27), strip (27.1), rubber strip (28), seal (29), and cushioning pad (30), from left bustle door (6).
Discard seals, rubber strip, strip and cushioning pad.
8
Remove seal (31), strip (31.1), rubber strip (32), rubber strip (33), seal (34), and cushioning pad (35) from
right bustle door (4). Discard seals, rubber strip, strip and cushioning pad.
c.
Assembly
WARNING
Adhesives can burn easily, can give off harmful vapors, and are harmful to skin and clothing. To
avoid injury or death, keep away from open fire and use in well-ventilated area. If adhesive gets on
skin or clothing, wash immediately with soap and water.
NOTE
•
Apply zinc chromate paste between contact surfaces of aluminum and steel.
•
Apply adhesive to rubber strips, seals, cushioning pads, and cleaned door surfaces where
seals and pads are to be installed.
1
Install new seal (27), new strip (27.1), new rubber strip (28), new seal (29), and new cushioning pad (30) on
left bustle door (6).
2
Install new seal (31), new strip (31.1), new rubber strip (32), new rubber strip (33), new seal (34), and new
cushioning pad (35) on right bustle door (4).
3
Install flat washer (26), latch (25), flat washer (24), flat washer (23), and new self-locking nut (22) on left
bustle door (6) only.
4
Install clevis assembly (20) on left bustle door (6) using thrust washer bearing (21), thrust washer bearing
(19), and new self-locking nut (18).
5
Install new shim(s) (17), as required, wear plate (16), and catch strike (15) on left bustle door (6) using two
new lockwashers (14) and two cap screws (13).
6
Install new shim(s) (12), as required, plate spacer (11), and locking bar slide (10) on left bustle door (6) us-
ing two new lockwashers (9) and two cap screws (8).
7
Install four new sleeve bearings (7) on left bustle door (6).
8
Repeat steps 4 through 7 on right bustle door (4).
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