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 1361 of 1417

INSTALLATION

NOTE

•

When new solenoid is installed, fitting from old solenoid may be used. Fitting must be

cleaned and inspected for cracks or stripped threads.

•

Male pipe threads must be wrapped with antiseize tape before installation.

•

Assistant will help with Step (1).

1.

Install bracket (Figure 2, Item 14) on firewall (Figure 2, Item 16) with washer (Figure 2, Item 13), screw

(Figure

2,

Item

12), nut (Figure 2, Item 15), and screw-assembled washer (Figure 2, Item 8).

2.

Install horn (Figure 2, Item 2) on bracket (Figure 2, Item 14) with two screws (Figure 2, Item 1), lockwashers

(Figure 2, Item 11), wire (Figure 2, Item 9), and two nuts (Figure 2, Item 10).

3.

Install horn solenoid (Figure 2, Item 6) on horn (Figure 2, Item 2).

4.

Install elbow (Figure 2, Item 3) on horn solenoid (Figure 2, Item 6).

5.

Connect air line (Figure 2, Item 4) to elbow (Figure 2, Item 3).

6.

Connect wires (Figure 2, Items 6 and 7) to horn solenoid (Figure 2, Item 5).

TM 9-2320-272-23-2

0343

0343-4