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 482 of 1275

TM 9-2350-311-20-1

4-5 POWERPLANT — CONTINUED

a. Removal — Continued

29

30

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35

Disconnect four electrical connectors (86) at master relay (87) and voltage regulator (88).

NOTE

Step

30

applies only to M109A2/M109A3 Howitzers.

Remove screw (89) and two Iockvvashers (90) and disconnect powerplant ground cable (91). Install

Iockwashers and screw.

Move throttle control to full open position, pull out quick-release pin (92), and release throttle governor control

rod (93).

Tag tachometer and speedometer flexible driveshafts (94 and 95). Unscrew two nuts (96) and disconnect

driveshafts.

Unscrew nut (97) and disconnect throttle valve control rod (98).

Pull out two quick-release pins (99) and disconnect steer control rod (100). Remove rod with boot (101 )

through engine compartment.

CAUTION

After disconnecting shift control rod, ensure rod is in driver’s compartment wall to

prevent damage when powerplant is hoisted or reinstalled,

Pull out quick-release pin (102) and disconnect shift control rod (103). Move rod into hull to prevent damage.

Place shift control in R2 position.

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