freightliner C SB FS65, Руководство по обслуживанию

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3. Clean the area around the drain plug. While the
transmission fluid is warm, remove the drain plug
and drain the fluid. Disconnect the fill tube from
the pan.
IMPORTANT: Examine the used transmission
fluid for dirt, coolant or water, and metal par-
ticles. If any of these contaminants are present,
a problem may exist within the transmission
system.
4. Support the pan, then remove all of the washer-
head screws that attach the pan to the transmis-
sion case. Remove the pan, and discard the pan
gasket.
5. Clean the pan with mineral spirits.
6. Remove the washer-head screw that attaches
the internal fluid filter to the filter spacer, then
remove the filter and discard it. See
Fig. 3 . Re-
move the fluid intake tube, and then remove the
seal ring from the intake tube, and discard the
seal ring.
7. Remove, clean and install the governor feed line
screen, located in the control valve body. See
Fig. 4 .
8. Install a new seal ring on the fluid intake tube.
IMPORTANT: Avoid twisting the intake tube
when installing the internal fluid filter, intake
tube, and seal ring; the seal ring could be
pinched, cut, or deformed. An air-tight seal must
be maintained.
9. Install the intake tube, with the seal ring installed,
in the main housing. Install the internal fluid filter
on the intake tube, making sure that the grom-
met in the filter fits the intake tube snugly.
10. Install the washer-head screw to retain the fluid
filter, and tighten it 10 to 15 lbf·ft (14 to 20 N·m).
11. Submerge a new pan gasket in transmission fluid
for five minutes. Then place the gasket on the
pan; do not use any substance as a gasket re-
tainer.
IMPORTANT: Do not use gasket-sealing com-
pounds any place inside of the transmission or
where they might be washed into the transmis-
sion. Also, nonsoluble vegetable-based cooking
compounds or fibrous greases must not be used
inside the transmission.
12. Install the pan and gasket.
12.1 Guide the pan and gasket carefully into
place. Guard against dirt or foreign mate-
rial entering the pan. Retain the pan with
four 5/16–18 washer-head screws, in-
stalled by hand in the corners of the pan.
12.2 Install the remaining washer-head screws
by hand, carefully threading each through
the gasket and into the transmission. Bot-
tom all of the screws before tightening
any of them.
12.3 Tighten all of the screws evenly 10 to 15
lbf·ft (14 to 20 N·m). Check the gasket fit
while the screws are being tightened.
IMPORTANT: The pan bolts must maintain a
minimum torque of 60 lbf·in (680 N·cm) after
the pan gasket has taken a set.
13. Install the fill tube at the side of the pan. Tighten
the tube fitting 90 to 100 lbf·ft (122 to 136 N·m).
f260133a
1
2
3
4
5
6
10/05/94
1. Fluid Intake Tube
2. Filter Spacer
3. Internal Fluid Filter
4. Washer-Head Screw
5. Governor Pressure
Tube
6. Governor Feed Tube
Fig. 3, Allison AT Series Transmission Filter
Transmission
26
School Bus Chassis Maintenance Manual, March 2003
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