Thomas SAF-T-LINER C2, Maintenance Manual

Page: 72 / 176

7. Using transmission fluid, lubricate the gasket on
the filter.
8. Using your hand, install the filter by turning it
clockwise until the filter gasket contacts the con-
verter housing or cooler manifold. Then, turn the
filter one more complete turn.
9. Install the drain plug and sealing washer. Tighten
the plug 22 to 30 lbf·ft (30 to 40 N·m).
10. Clean the area around the fill tube and remove
the dipstick. Using a clean funnel in the fill tube,
add transmission fluid. See
Table 3 for approved
transmission lubricants, and Table 4 for lubricant
capacities.
11. Check and adjust the fluid level using the proce-
dure under "Checking the Fluid Level".
3000 Series
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.
1. Park the vehicle on a level surface and apply the
parking brakes.
2. Operate the vehicle until the transmission
reaches normal operating temperature: 160 to
200°F (71 to 93°C).
3. Clean the area around the drain plug and the
transmission fluid pan. Place a drain pan under
the transmission and remove the drain plug. Ex-
amine the fluid as it drains. If only the filter is
being changed, do not drain the fluid.
4. Remove the 12 mounting bolts (6 each) from the
2 filter covers.
NOTE: A lot of fluid will drain when the filter
covers are removed.
5. Remove the filter covers, O-rings, and two
square-cut seals from the transmission. See
Fig. 4 .
6. Remove the filters from the bottom of the control
module.
7. Lubricate the new O-rings with transmission fluid,
and install them on the cover assemblies.
8. Install a new square-cut seal on each cover as-
sembly, and install the fluid filter elements on the
cover assemblies.
9. Install the filter and cover assemblies into the
filter compartment.
10. Align each cover assembly with the holes in the
channel plate sump, and push the cover assem-
blies in by hand to seat the seals.
CAUTION
Do not use the bolts to draw the filter covers to
the sump. This can damage the covers, seals, or
sump.
11. Install six bolts in each cover, and tighten the
bolts 38 to 44 lbf·ft (51 to 61 N·m).
03/31/2000 f261061
1
2
1. Magnet 2. External Filter
Fig. 3, 2100/2200/2500 Series Transmission External
Filter
Transmission
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Saf-T-Liner C2 School Bus Maintenance Manual, July 2020
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