WORKHORSE CUSTOM CHASSIS
Service Manual
Automatic Transmission – Allison
2007 W Series
© 2006 Workhorse Custom Chassis — All Rights Reserved
SECTION
7.2
PAGE
487
2007 W Series Chassis
WSM082106
AUTOMATIC TRANSMISSION FLUID AND FILTER
REPLACEMENT
Removal Procedure
IMPORTANT:
DO NOT drain the fluid if only the transmission external
DO NOT drain the fluid if only the transmission external
oil filter is being replaced.
oil filter is being replaced.
1. Remove the drain plug (6) and drain plug seal (5).
Drain the transmission fl uid into a suitable container.
2. Inspect the drained fl uid. Refer to Transmission Fluid
Checking Procedure .
IMPORTANT:
Use a standard strap-type filter wrench to remove the
Use a standard strap-type filter wrench to remove the
transmission external oil filter.
transmission external oil filter.
3. Remove the fi lter (4) by rotating in the
counterclockwise direction.
4. Remove the magnet (2) from the fi lter adapter
(1) in the converter housing or from the top of the
transmission external oil fi lter (3).
5. Clean any metal debris from the magnet. Presence of
any metal pieces larger than dust may indicate that
transmission replacement or overhaul is required.
Installation Procedure
1. Install the magnet (2) onto the fi lter adapter (1) which
is in the converter housing.
2. Lubricate the gasket (3) on the transmission external
oil fi lter with transmission fl uid.
3. Install, by hand, the transmission external oil fi lter (4)
until the gasket on the fi lter touches the converter
housing.
