Allison Transmission AT Series User Manual

27
TRANSMISSION FLUID CHECK PROCEDURE
Typical Dipstick Markings
WARNING: Take the following precautions so that unexpected, pos-
sible sudden vehicle movement is avoided. Whenever it becomes nec-
essary to leave the vehicle, even momentarily, while the engine is
running, place the transmission shift selector in N (Neutral) or P (Park),
set the parking brake and/or emergency brakes and chock the wheels.
CAUTION: Dirt and foreign matter must not be permitted to enter
the fluid system. It can cause valves to stick, cause undue wear of
transmission parts, or clog passages.
NOTE:
• Always check the transmission fluid level a minimum of two times.
Consistency is important in maintaining accuracy. If inconsistent
readings persist, check the transmission breather and the vent hole in
the dipstick fill tube to ensure they are clean and free of debris. The
vent hole is located on the underside of the fill tube just below the seal
of the dipstick cap.
• Transmissions equipped with a transfer gear housing (dropbox)
contain two separate hydraulic systems: the transmission system and
the dropbox system. Each system uses different transmission fluid and
must be checked independently.
V01961.01
REF
FILL
COLD
RUN
BAND
OR
HOT RUN
BAND
C
H
E
C
K
IN
N
E
U
T
R
A
L
A
T
ID
L
E
- U
S
E
D
E
X
R
O
N
®
F
L
U
ID
COLD RUN
BAND
HOT OVERFILL
C
H
E
C
K
IN
N
E
U
T
R
A
L
A
T
ID
L
E
- U
S
E
D
E
X
R
O
N
®
F
L
U
ID
RECOMMENDED DIPSTICK MARKINGS
ALTERNATE DIPSTICK MARKINGS

Allison Transmission AT Series Specifications

General

Brand	Allison Transmission
Model	AT Series
Category	Microphone system
Language	English