freightliner FL80 1998 - Page 73

7. Insert the dipstick into the tube and remove the
dipstick.
8. Check the fluid level reading and repeat the
check procedure to verify the reading.
If the fluid level is within the COLD RUN band,
the transmission may be operated until the fluid
is hot enough to perform a HOT RUN check.
If the fluid level is not within the COLD RUN
band, add or drain fluid as needed to adjust the
fluid level to the middle of the COLD RUN band.
See Fig. 10 for the AT, MD, and HD series, and
Fig. 11 for the MT series.
CAUTION
Do not fill above the COLD RUN band if the trans-
mission fluid is below normal operating tempera-
ture. As fluid temperature increases, so does the
fluid level. Filling above the COLD RUN band
when the transmission is below normal operating
temperature may result in an overfilled transmis-
sion, which causes fluid foaming, and aeration.
Fluid foaming and aeration cause transmission
overheating and erratic shifting.
NOTE: Perform a hot check at the first opportu-
nity after the normal operating temperature,
160° to 200°F (71° to 93°C) has been reached.
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1
13
17
19
15
11
3
5
9
7
6108
4
12
16
20
21
18
14
2
NOTE: Torque the oil pan bolts with a click-type torque
wrench following this torque pattern. Tighten the bolts 5
lbf·ft (7 N·m), then repeat the torque pattern with a click-
type torque wrench 15 to 20 lbf·ft (20 to 27 N·m).
Fig. 9, Allison MT Series Transmission, Oil Pan Torque
Pattern
12/01/97
A
B
f270002a
A. Cold Run Band B. Hot Run Band
Fig. 10, AT, MD, and HD Series Dipstick Markings
B
C
CHECK IN NEUTRAL AT IDLE
HOT RUN
RE
F
FILL
01/22/97
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A
A. Transmission Housing/Oil Pan Split Line
B. Hot Run Band
C. Cold Run Band
Fig. 11, MT Series Dipstick Markings, 5.1-Inch Depth Oil
Pan
Transmission26
Business Class Trucks Maintenance Manual, February 200326/12