TM 9-2320-360-10
When the control is in the LOCK position, with the transfer case in LO range, the interaxle
differentials lock causing all differentials to turn at the same rate, thus further increasing traction.
TRANSFER CASE
DRIVELINE
DRIVING
INTERAXLE
SHIFT LEVER
CONTROL
FRONT
LOCKUP
POSITION
POSITION
AXLE
ENGAGED
HI
UNLOCK
NO
NO
HI
LOCK
YES
NO
LO
UNLOCK
YES
NO
LO
LOCK
YES
YES
5
ETHER START Control
Used to inject ether into engine air intake adapter for cold weather starting. Use ether Mart only if
outside temperature is below 45OF (70C). Press ETHER START control to inject ether.
6
DEF/CAB Control
Used to control cab air. When control is in DEF position, air defrosts windshield. When control is in
CAB position, air heats cab interior. When control is between CAB and DEF, air defrosts
windshield and heats cab interior.
7
RECIRC/F/A
Used to control guide air flow to cab. When control is in RECIRC position, cab air recirculates.
When control is in F/A position, fresh air is vented into cab.
8
OFF/HEAT Control
Used to control temperature of air that heats cab interior and defrosts windshield.
9
FRONT Fan Switch
Four-position switch used to control operation and speed of front heater fan.
10
REAR Fan Switch
Four-position switch used to control operation and speed of rear exhaust fan. Exhaust fan
ventilates cab by blowing cab air to the outside thru louvers located in the rear cab wall.
Change 2 2-9
