TM-9-2320-272-10

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

TECHNICAL MANUAL; OPERATOR'S MANUAL

SEPTEMBER 2004

CHANGE 2

TM-9-2320-272-10 - Page 106 of 481

Key

Item and Function

9

BACKREST CONTROL adjusts angle of seat backrest.

10

SEAT CUSHION CONTROL adjusts height and angle of seat cushion.

11

SEAT HORIZONTAL CONTROL positions seat forward or backward.

12

FUEL TANK SELECTOR SWITCH (M929/A1/A2, M930/A1/A2, M931/A1/A2,

M932/A1/A2, and M936/A1/A2 models) is turned L (left) or R (right) to select fuel

supply source. Selector is located on the cab floor to the left side of the operator’s

seat. Occasionally switch fuel tanks to prevent the fuel from becoming dirty,

moisture filled, and thick.

13

SPRING TENSION CONTROL increases seat spring tension when crank is

turned clockwise.

14

SLOTTED BRACKETS at each corner permit front portion of seat to be raised or

lowered.

TM 9-2320-272-10

2-7

2-3. CHASSIS CONTROLS AND INDICATORS (Contd)