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 194 of 1275

TM9-2350-311-20-1

3-3 TROUBLESHOOTING CHART — CONTINUED

g. TRACKS AND SUSPENSION

The track and suspension system consists of the vehicle tracks, final drives, sprocket wheel, universal joints, road

wheels, idler wheels, idler hubs, shocks, and torsion bars. The relationship of these components is shown in the diagram

below.

When the track receives power from the transmission through the universal joint, final drives, and sprockets, the track

begins to revolve around road wheels, over the idler wheels and back to the sprockets. This propels the vehicle forward

and backward, depending on selected transmission gear.

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