2000/2400 Series
NOTE: For 2000/2400 series transmissions with
non-TranSynd ATF, change oil and filters at
50,000 miles (80 000 km) or 24 months, which-
ever comes first.
IMPORTANT: When draining transmission fluid,
check for evidence of dirt or water contamina-
tion. A small amount of condensation will appear
in the fluid during operation. See
Fig. 6
. Water
contamination is normally characterized as a
milky discoloration of the transmission fluid. Ob-
vious contamination of the transmission fluid
indicates a leak between the water and fluid ar-
eas of the transmission cooler. Inspect and
pressure-test the cooler to confirm the leak; re-
place leaking transmission coolers.
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 set the
parking brake.
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.
4.
Place a drain pan under the external filter. Re-
move the external filter with a strap type filter
wrench by turning it counterclockwise.
5.
Remove the magnet from the filter attachment
tube or the top of the filter element. Clean any
debris from the magnet.
NOTE: Report to your maintenance personnel
any debris attached to the magnet larger than
dust.
6.
Reinstall the magnet on the filter attachment
tube.
7.
Lubricate the gasket on the new filter with clean
transmission fluid.
8.
Install, by hand, the filter until the gasket on the
filter touches the converter housing or cooler
manifold.
9.
Turn the filter ONE FULL TURN ONLY after the
gasket contacts the transmission.
10. Replace the drain plug O-ring, and install the
drain plug. Tighten the drain plug 22 to 30 lbf·ft
(30 to 40 N·m).
11. Refill the transmission with fresh transmission
fluid. See
Table 3
for approved automatic trans-
mission lubricants.
12. Check the fluid level. See
Table 5
for 2000/2400
series lubricant capacities.
Check and adjust the fluid level using the proce-
dures under "Allison Transmission Fluid Level
Checking."
Lubricant Capacities, Allison 2000/2400 Series
Transmissions
Model
Refill Capacity
*
:
quarts (liters)
2000/2400 Standard Sump
10.6 (10)
03/31/2000
f261061
1
2
1.
Magnet
2.
External Filter
Fig. 6, Allison 2000/2400 Series Transmission External
Filter
Transmission
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