Thomas SAF-T-LINER C2, Maintenance Manual

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Eaton Fuller Transmission Lubricant Capacities
*
Transmission Model Capacity: qt (L)
FS–5406A 9.75 (9.2)
FS–6406A, FSO–6406A 9.75 (9.2)
FSO–8406A 9.75 (9.2)
*
Quantities listed are approximate. Fill the transmission until the lubricant
is level with the bottom of the fill hole, with the vehicle in normal operating
position.
Table 2, Eaton Fuller Transmission Lubricant
Capacities
26–03 Allison and Eaton Fuller
Transmission Breather
Checking
Transmission housing breathers (if so equipped)
must remain clear. A plugged breather could result in
pressure build-up, which could cause oil leakage.
If the breather is plugged, clean or replace it. See
Fig. 2 . Check more often if the vehicle is operating
under very dusty conditions.
26–04 Allison Transmission
Fluid and Filter
Changing
IMPORTANT: For oil and filter change intervals,
see the applicable Allison Operator’s Manual.
When draining transmission fluid, check for evidence
of dirt or water contamination. A small amount of
condensation will appear in the fluid during operation.
Water contamination is normally characterized as a
milky discoloration of the transmission fluid. Obvious
contamination of the transmission fluid indicates a
leak between the water and fluid areas of the trans-
mission cooler. Inspect and pressure-test the cooler
to confirm the leak; replace leaking transmission
coolers.
2100/2200/2500 Series
1. Park the vehicle on a level surface and apply the
parking brake.
2. Run the engine until the transmission fluid
reaches the operating temperature of 160 to
200°F (71 to 93°C). Shift the transmission to
neutral (N) and shut down the engine.
CAUTION
To prevent dirt from entering the transmission,
use only clean containers and fillers for the trans-
mission fluid. Do not use fillers or containers that
have been used for water or antifreeze. Dirt, water,
or antifreeze could damage the transmission.
3. Clean the area around the drain plug. Place a
drain pan under the transmission and remove the
drain plug. Examine the fluid while it drains. If
only the filter is being changed, do not drain the
fluid.
NOTE: A lot of fluid will drain when the filter is
removed.
4. Using a standard strap-type filter wrench, remove
the filter by turning it counterclockwise. See
Fig. 3 .
5. Remove the magnet from the filter attachment
tube or from the top of the filter element.
6. Clean any metal debris from the magnet. Then,
install the magnet on the filter attachment tube.
f260007a 05/27/93
NOTE: Location of the transmission breather will vary
depending on transmission model.
Fig. 2, Transmission Breather (Eaton Fuller shown)
Transmission
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Saf-T-Liner C2 School Bus Maintenance Manual, July 2020
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