TM-9-2350-311-20-1

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

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL FOR HULL, POWERPLANT, DRIVE CONTROLS, TRACKS, SUSPENSION, AND ASSOCIATED COMPONENTS

AUGUST 1994

TM-9-2350-311-20-1 - Page 957 of 1275

TM 9-2350-311-20-1

10-16 IDLER WHEELS AND HUBS —

CONTINUED

a. Removal — Continued

3

4

5

6

7

8

Remove grease fitting (5) from cap (6).

Remove relief valve (7) from hub body (8).

Remove six screws (9), six flat washers (10), and cap (6).

Remove static spring (11), cotter pin (12), nut (13), key washer (14), preformed packing (15), and hub body (8).

Discard cotter pin, key washer, and preformed packing.

Remove inner hub seal (16). Discard inner hub seal.

If damaged, remove bearings (17) from hub body (8) using removers and handle.

b. Installation

NOTE

Ž

Do not prepack bearings with grease.

Ž

Seal mating surface in hub must be free of grease, dirt, and oil prior to assembly.

10-40