TM-9-2350-311-34-2

CAB, ARMAMENT, SIGHTING AND FIRE CONTROL, ELEVATING AND TRAVERSING SYSTEMS AND ASSOCIATED COMPONENTS HOWITZER, MEDIUM, SELF-PROPELLED, 155MM

TECHNICAL MANUAL; DIRECT AND GENERAL SUPPORT MAINTENANCE MANUAL

SEPTEMBER 1994

TM-9-2350-311-34-2 - Page 380 of 552

TM9-2350-311-34-2

7-2 CYLINDER ASSEMBLY

This task covers:

a. Disassembly

b. Inspection

c. Assembly

INITIAL SETUP

Tools

Artillery and turret mechanic’s tool kit

(SC 5180-95-CL-A12)

Artillery field maintenance tool kit

(SC 4930-95-CL-A06)

Materials/Parts

Hydraulic fluid (item 22, Appx B)

LockWire (item 39, Appx E)

Lockwire (item 107, Appx E)

Rammer cylinder seal replacement parts kit (item 150,

Appx E)

Retaining ring (item 122, Appx E)

Retaining ring (item 123, Appx E)

Retaining ring (item 124, Appx E)

Self-locking nut (item 160, Appx E)

Equipment Condition

Cylinder assembly removed (para 7-1)

a. Disassembly

1

2

3

4

5

6

7

8

9

10

11

12

13

14

7-20

Remove and discard lockwire (1).

Remove three cap screws (2), self-locking nut (3), sleeve spacer (4), and pillow block cap (5). Discard self-

Iocking nut.

Remove self-alining bearing (6), bearing collar (7), and bearing cap (8).

Remove and discard piston wiper (9), packing retainer (1O), and preformed packing (11).

Remove Iockwire (12), machine plug (13), and preformed packing (14). Discard lockwire and preformed

packing.

Remove outer end housing (15).

Remove and discard preformed packing (16) and flat washer (17).

Remove setscrew (18). Separate guide (19) and cylinder externally threaded ring (20).

Remove guide (19) from rammer piston tube (21).

Remove and discard preformed packing (22) and retaining ring (23).

Remove and discard guide wiper (24), packing retainer (25), and preformed packing (26).

Remove rammer piston tube (21) and rammer actuating piston (27) from outer rammer piston tube (28) and

separate.

Remove and discard retaining ring (29).

Remove and discard two packing retainers (30) and preformed packing (31).