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 1353 of 1417

SECONDARY SWITCH REMOVAL

NOTE

Tag wires for installation.

1.

Disconnect wire (Figure 3, Item 8) and ground wire (Figure 3, Item 1) from secondary low air pressure switch

(Figure 3, Item 7).

NOTE

Assistant will help with Steps (2) and (3).

2.

Remove two nuts (Figure 3, Item 4) and screws (Figure 3, Item 3) from secondary air reservoir

(Figure

3,

Item

5).

3.

Push and rotate secondary air reservoir (Figure 3, Item 5) toward rear of vehicle.

4.

Remove secondary low air pressure switch (Figure 3, Item 7) and adapter fitting (Figure 3, Item 6) from adapter

elbow (Figure 3, Item 2).

TM 9-2320-272-23-2

0342

0342-6