WORKHORSE CUSTOM CHASSIS
Service Manual
Automatic Transmission – Allison
2007 W Series
© 2006 Workhorse Custom Chassis — All Rights Reserved
SECTION
7.2
PAGE
469
2007 W Series Chassis
WSM082106
4. Connect the J-44835-1 adapters to the transmission
oil cooler lines.
5. Connect the J 35944-A discharge hose (5) to the oil
cooler return pipe, top connector.
6. Clip the discharge hose (5) onto the oil drain container.
7. Attach the J 35944-A to the undercarriage of the
vehicle with the hook provided and connect the
fl ushing system feed supply hose (3) from the J
35944-A to the oil cooler feed pipe, bottom connector.
8. With the water supply valve (1) on the J 35944-A in the
OFF position, connect the water supply hose from the
J 35944-A to the water supply at the faucet.
9. Turn ON the water supply at the faucet.
INITIAL FLUSH
1. Turn the J 35944-A water supply valve (1) to the
ON position and allow water to fl ow through the oil
cooler and pipes for 10 seconds in order to remove
any remaining transmission fl uid. If water does not
fl ow through the oil cooler and pipes, the cause of
the blockage must be diagnosed and the plugged
component must be repaired or replaced. Continue
with the cooler fl ushing and fl ow check procedure once
the blockage is corrected.
2. Turn the J 35944-A water supply valve (1) to the OFF
position and clip the discharge hose (5) onto a suitable
container, preferably with a lid, to avoid splashback.
