Sable V6-183 3.0L DOHC VIN S MFI (1997)
Transmission Cooler: Service and Repair
Backflushing and Cleaning
DESCRIPTION
When internal wear or damage has occurred in the transmission, metal particles, clutch plate material or band material may have been carried into
the torque converter and transmission fluid cooler. These contaminants are a major cause of recurring transmission troubles and must be removed
from the system before the transmission is put back into service.
Whenever a transmission has been disassembled to replace worn or damaged parts or because the valve body sticks from foreign material, the
torque converter and transmission fluid cooler must be cleaned by using a mechanically agitated cleaner, such as Rotunda Torque Converter and
Oil Cooler Cleaner 014-00028 or equivalent.
PROCEDURE
1. Perform backflushing with a Rotunda Torque Converter Cleaner 014-00028 or equivalent. Test your equipment to make sure that a vigorous fluid
flow is present before proceeding. Replace the system filter if flow is weak or contaminated.
Cooler Lines
2. To aid in attaching the cleaner to the transmission steel cooler tubes, connect two additional rubber hoses to the transmission end of the steel
transmission cooler lines.
a. Connect the cleaner tank pressure line to the steel transmission cooler return tube (longer tube).
b. Connect a tank return hose to the steel transmission cooler pressure line (shorter tube). Place the outlet end of this hose in the solvent tank
reservoir.
3. Turn on solvent pump and allow the solvent to circulate a minimum of five minutes (cycling switch ON and OFF will help dislodge contaminants
in cooler system).
4. Switch OFF the solvent pump and disconnect the solvent pressure hose from the transmission cooler return line.
5. Use compressed air to blow out the cooler(s) and tubes (blow air into the transmission cooler return tube) until all solvent is removed.
6. Remove the rubber return hose from the remaining steel cooler tube.
