TM-9-2320-272-23-2

TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)

TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 2 OF 5

SEPTEMBER 2012

TM-9-2320-272-23-2 - Page 903 of 1417

ADJUSTMENT

1.

Position control lever (Figure 5, Item 2) to idle position.

2.

Turn rod (Figure 5, Item 20) until control lever (Figure 5, Item 2) moves forward 0.125 in. (3.2 mm).

3.

Tighten nut (Figure 5, Item 19) securely.

4.

Depress spring-loaded sleeve (Figure 5, Item 22) and install quick-disconnect socket (Figure 5, Item 21) from

ball joint (Figure 5, Item 1).

5.

Check for engine idle at 550 to 650 rpm.

NOTE

Perform Steps (6), (7), and (8) as necessary to obtain correct idle speed.

6.

Compress spring-loaded sleeve (Figure 5, Item 22) and disconnect socket (Figure 5, Item 21) from ball joint

(Figure 5, Item 1).

7.

Loosen jamnut (Figure 5, Item 19) and lengthen or shorten rod (Figure 5, Item 20) by turning rod into or out of

yoke (Figure 5, Item 18) to obtain correct movement for idle speed.

8.

Depress spring-loaded sleeve (Figure 5, Item 22) and install quick-disconnect socket (Figure 5, Item 21) on

ball joint (Figure 5, Item 1).

9.

Tighten jamnut (Figure 5, Item 19) when correct idle speed is obtained.

TM 9-2320-272-23-2

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