fluid level to the middle of the COLD RUN band.
See
Fig. 12
.
CAUTION
As the fluid temperature increases, so does the
fluid level. Do not fill above the COLD RUN band if
the transmission fluid is below normal operating
temperature.
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.
Hot Check
1.
Park the vehicle on a flat, level surface. Apply
the parking brake and chock the tires.
2.
Shift the transmission to NEUTRAL.
3.
Operate the engine at idle (500 to 800 rpm) until
normal operating temperature is reached. Check
that the sump temperature is 160 to 200°F (71 to
93°C). Check that the converter-out temperature
is 180 to 220°F (82 to 104°C).
4.
With the engine idling, remove the dipstick from
the tube and wipe it clean.
5.
Insert the dipstick into the tube and remove the
dipstick.
6.
Check the fluid level reading and repeat the
check procedure to verify the reading. Safe oper-
ating level is within the HOT RUN band on the
dipstick. The HOT RUN band is between the
HOT FULL and HOT ADD marks.
If the fluid level is not within the HOT RUN band,
add or drain fluid as needed to bring the fluid
level within the HOT RUN band. See
Fig. 12
.
Eaton/Fuller Transmission
CAUTION
Operating a transmission with the fluid level
higher or lower than recommended can result in
transmission damage. Do not overfill the transmis-
sion. Overfilling will force fluid out of the case
through the main shaft openings.
Do not mix types and brands of fluid, because of
possible incompatibility. Do not use fluid addi-
tives, friction modifiers, extreme-pressure gear
fluids, or multiviscosity lubricants.
With the transmission at operating temperature, and
the vehicle on a level surface, check the fluid level in
the transmission.
1.
Clean the area around the fill plug, and remove it
from the side of the case.
2.
Using your finger or a bent pipe cleaner, see if
the fluid is level with the fill opening. See
Fig. 8
.
3.
If the transmission fluid level is low, check the
transmission for leaks, and correct as needed.
4.
If needed, add the recommended fluid, until it is
level with the lower edge of the fill opening. See
Table 2
for approved transmission lubricants.
5.
Clean the fill plug, install it in the transmission,
then tighten it 50 lbf·ft (68 N·m).
Meritor Transmission
CAUTION
Operating a transmission with the fluid level
higher or lower than recommended can result in
transmission damage. Do not overfill the transmis-
sion.
Do not mix types and brands of fluid, because of
possible incompatibility. Do not use fluid addi-
tives, friction modifiers, extreme-pressure gear
fluids, or multiviscosity lubricants.
1.
Remove the fill plug from the transmission.
2.
Insert a finger or pipe cleaner into the transmis-
sion.
3.
Check that the fluid level is even with the base of
the fill plug. See
Fig. 8
.
12/01/97
A
B
f270002a
A. Cold Run Band
B. Hot Run Band
Fig. 12, Dipstick Markings
Transmission
26
Heavy-Duty Trucks Maintenance Manual, November 2001
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