Caravan AWD V6-201 3.3L (1991)
Fluid Line/Hose: Service and Repair
FLUSHING COOLERS AND TUBES
When a transaxle failure has contaminated the fluid, the oil cooler(s) must be flushed. The cooler bypass valve in the transaxle must be replaced
also. The torque converter must also be replaced with an exchange unit. This will insure that metal particles or sludged oil are not later transferred
back into the reconditioned (or replaced) transaxle.
The recommended procedure for flushing the transaxle cooler is to use Tool 6906A Cooler Flusher.
WARNING:
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Wear protective eye-wear that meets the requirements of OSHA and ANSI Z87.1-1968. wear standard industrial rubber gloves.
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Keep lighted cigarettes, sparks, flames, and other ignition sources away from the area to prevent the ignition of combustible liquids
and gases. Keep a class (B) fire extinguisher in the area where the flusher will be used.
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Keep the area well ventilated.
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Do not let flushing solvent come in contact with your eyes or skin: if eye contamination occurs, flush eyes with water for 15 to 20
seconds. Remove contaminated clothing and wash affected skin with soap and water. Seek medical attention.
COOLER FLUSH USING TOOL 6906A
1. Remove cover plate filler plug on Tool 6906A, or equivalent. Fill reservoir 1/2 to 3/4 full of fresh flushing solution. Flushing solvents are
petroleum based solutions generally used to clean automatic transmission components. DO NOT use solvents containing acids, water, gasoline, or
any other corrosive liquids.
2. Reinstall filler plug on Tool 6906A.
3. Verify pump power switch is turned OFF. Connect red alligator clip to positive (+) battery post. Connect black (-) alligator clip to a good ground.
4. Disconnect the cooler lines at the transmission.
NOTE: When flushing transmission cooler and lines, ALWAYS reverse flush.
5. Connect the BLUE pressure line to the OUTLET (From) cooler line.
6. Connect the CLEAR return line to the INLET (To) cooler line
7. Turn pump ON for two to three minutes to flush cooler(s) and lines. Monitor pressure
readings and clear return lines. Pressure readings should stabilize below 20 psi. for vehicles equipped with a single cooler and 30 psi. for vehicles
equipped with dual coolers. If flow is intermittent or exceeds these pressures, replace cooler.
8. Turn pump OFF.
9. Disconnect CLEAR suction line from reservoir at cover plate. Disconnect CLEAR return line at cover plate, and place it in a drain pan.
10. Turn pump ON for 30 seconds to purge flushing solution from cooler and lines. Turn pump OFF.
11. Place CLEAR suction line into a one quart container of Mopar (R) ATF Plus 4 Type 7176 automatic transmission fluid.
12. Turn pump ON until all transmission fluid is removed from the one quart container and lines. This purges any residual cleaning solvent from the
transmission cooler and lines. Turn pump OFF.
13. Disconnect alligator clips from battery. Reconnect flusher lines to cover plate, and remove flushing adapters from cooler lines.
14. Check for debris on cooler and remove.
