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 493 of 1275

4-5 POWERPLANT — CONTINUED

c. Special Equipment Hookup — Continued

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10

11

12

13

14

15

Connect two electrical connectors (86) to master relay (87).

Connect two electrical connectors (86) to voltage regulator (88).

Connect rectifier-to-voltage regulator lead 11593806 (M109A2/M109A3) or 12268303 (M109A4/M109A5)

connector (78) to rectifier (1 58).

Connect power cable (rectifier-to-alternator) (item 8, Appx H) (M109A2/M109A3) or (item 9, Appx H) (M109A4/

M109A5) (159) to rectifier (1 58).

NOTE

Step 13 applies to M109A4/M109A5 Howitzers.

Connect starter protection relay electrical lead 503 (160) to power cable (rectifier-to-alternator) (item 9, Appx

H) (159).

Connect power cable (starter circuit) (item 34, Appx H) (M109A2M109A3) or (item 10, Appx H) (M109A4/

M109A5) (161 ) to starter cable 11593782 (M109A2/M109A3) or 12353401 (M109A4/M109A5) connector

(117).

Connect power cable (starter and master warning circuit) (item 11, Appx H) (162) to master circuit wiring

harness 12268100 (M109A2/M109A3) or 12268418 (M109A4/M109A5) connector (118).

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TM9-2350-311-20-1