RAM 1500 Van V8-5.9L VIN Z LDC (2001)
Transmission Cooler: Service and Repair
Flushing Coolers and Tubes
With Radiator In-Tank Transmission Oil Cooler
STANDARD PROCEDURE- FLUSHING COOLERS AND TUBES
When a transmission failure has contaminated the fluid, the oil cooler(s) must be flushed. The torque converter must also be replaced. This will insure
that metal particles or sludged oil are not later transferred back into the reconditioned (or replaced) transmission.
1. Remove cover plate filler plug on Tool 6906B. 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 6906B.
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.
NOTE: The converter drainback valve must be removed and an appropriate replacement hose installed to bridge the space between the
transmission cooler line and the cooler fitting. Failure to remove the drainback valve will prevent reverse flushing the system. A suitable
replacement hose can be found in the adapter kit supplied with the flushing tool.
NOTE: This flushes the bypass circuit of the cooler only.
5. Remove oil cooler from vehicle.
6. Connect the BLUE pressure line to the OUTLET (From) cooler line.
7. Connect the CLEAR return line to the INLET (To) cooler line
8. Turn pump ON for two to three minutes to flush cooler(s) and lines.
9. Turn pump OFF.
NOTE: This flushes the main oil cooler core passages only.
10. Remove the thermostat from the oil cooler.
11. Install Special Tool Cooler Plug 8624 into the transmission oil cooler (Fig. 3).
12. Re-install the snap-ring.
13. Turn pump ON for two to three minutes to flush cooler(s) and lines.
14. Turn pump OFF.
15. Remove Special Tool Cooler Plug 8624 from the transmission oil cooler.
