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 1203 of 1275

TM 9-2350-311-20-1

- Set TEST SELECT switches to 10, press and

release TEST button.

- See paragraph 9-14 to adjust engine idle

to 650 to 750 rpm.

- Watch VTM readout display for about 10

seconds to verify idle speed remains within

tolerance.

Figure 2, Sheet 20 of 20

I-26