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OIL PUMP VOLUME CHECK Measuring the oil pump output volume will deter- mine if sufficient oil flow to the transmission oil Verify that the transmission fluid is at the proper level. Refer to the Fluid Level Check procedure in t ATF+3, type 7176, Auto- matic Transmission Fluid. (1) Disconnect the To cooler line at the cooler inlet and place a collecting container under the dis- CAUTION: With the fluid set at the proper level, (2) Run the engine at curb idle speed, with the shift selector in neutral. (3) If one quart of transmission fluid is collected in the container in 20 seconds or less, oil pump flow vol- (4) Re-connect the To cooler line to the transmis- sion cooler inlet. (5) Refill the transmission to proper level. FLUSHING COOLERS AND TUBES When a transmission failure has contaminated the fluid, the oil cooler(s) must be flushed. The torque The only recommended procedure for flushing cool- ers and lines is to use Tool 6906A Cooler Flusher. CAUTION: The transmission oil cooler requires a WARNING: WEAR PROTECTIVE EYEWEAR THAT KEEP LIGHTED CIGARETTES, SPARKS, FLAMES, AND OTHER IGNITION SOURCES AWAY FROM THE IN THE AREA WHERE THE FLUSHER WILL BE USED. KEEP THE AREA WELL VENTILATED. DO NOT LET FLUSHING SOLVENT COME IN CON- TACT WITH YOUR EYES OR SKIN: IF EYE CONTAM- COOLER FLUSH USING TOOL 6906A (1) Remove cover plate filler plug on Tool 6906A. Fill reservoir 1/2 to 3/4 full of fresh flushing solution. (2) Reinstall filler plug on Tool 6906A. nect red alligator clip to positive (+) battery post. (4) Disconnect the cooler lines at the transmission. NOTE: When flushing transmission cooler and lines, ALWAYS reverse flush. NOTE: The converter drainback valve must be (5) Connect the BLUE pressure line to the OUT- LET (From) cooler line. (6) Connect the CLEAR return line to the INLET (To) cooler line (7) Remove the transmission oil cooler from the vehicle. Refer to the Group 7, Cooling System, for the (8) Remove the transmission oil cooler thermostat. Refer to the Group 7, Cooling System, for the proper (9) Re-install the thermostat cover onto the oil cooler and install the snap ring. (10) Re-connect the oil cooler to the transmission cooler lines. (11) Turn pump ON for two to three minutes to flush cooler(s) and lines. NOTE: This flushes the bypass circuit of the cooler (12) Turn pump OFF. cooler. 21 - 226 46RE AUTOMATIC TRANSMISSION DN SERVICE PROCEDURES (Continued) |