Cherokee 4WD L6-4.0L VIN S (1998)
Transmission Cooler: Testing and Inspection
Oil Cooler Flow Check
OIL COOLER FLOW CHECK
After the new or repaired transmission has been installed and filled, the oil cooler flow should be checked using the following procedure:
1. Disconnect the From cooler line at the transmission and place a collecting container under the disconnected line.
2. Run the engine at curb idle speed, with the shift selector in neutral.
3. If the fluid flow is intermittent or takes more than 20 seconds to collect one quart, the cooler should be replaced.
CAUTION: With the fluid set at the proper level, fluid collection should not exceed (1) quart or internal damage to the transmission may occur.
4. If flow is found to be within acceptable limits, reconnect the cooler line. Then fill transmission to the proper level, using the approved type of
automatic transmission fluid.
