TM-9-2815-220-24

AVDS-1790 2CA, 2DA and 2DR Air-Cooled 12-Cylinder Diesel Engines

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL FOR AVDS-1790 2CA, 2DA and 2DR Air-Cooled 12-Cylinder Diesel Engines

TM-9-2815-220-24 - Page 284 of 1563

TM 9-2815-220-24

THROTTLE ADJUSTMENTS

0043 00

WP 0043 00-2

ADJUSTMENT (Continued)

2.

Engine low speed idle adjustment (made with

engine running and warmed up).

a.

Adjust engine idle to 675-725 rpm by

turning idle adjusting screw (5).

b.

Loosen lock nut (6) on idle adjusting

screw (5) and turn screw clockwise to

increase idle speed, and counterclockwise

to decrease speed.

Tighten lock nut (6).

3.

Engine high speed idle adjustment (2600-2660 rpm - no load, checked with engine running

and warmed up, see WP 0044, Engine Run-In).

a.

If adjustment is required, stop engine and remove front cooling fan and vane (WP 0054).

b.

Loosen lock nut (7) on idle adjusting screw (8) and turn screw clockwise to decrease idle

speed, and counterclockwise to increase speed (1/4 turn changes engine speed by

approximately 25 rpm).

Tighten lock nut (7).

c.

Replace fan and vane, start engine and verify adjustment.

Repeat as necessary until proper

speed is attained.

5

6

7

8