However, if you're determined to do it yourself, here's a general outline. Remember, this is a general guide and might not be perfectly accurate for your specific van's transmission type. Consult a repair manual specific to your van's year, model, and transmission (e.g., 727 Torqueflite, 904, etc.) for precise instructions and torque specifications. These manuals are readily available online and at auto parts stores.
Tools You'll Likely Need:
* Repair Manual (absolutely essential): This will provide specific instructions and torque specifications for your vehicle.
* Jack and Jack Stands: To safely lift the van.
* Wheel Chocks: For safety.
* Drain Pan: To catch the old transmission fluid.
* Wrench(es): Various sizes, likely including sockets and extensions, to access drain plugs and transmission filter.
* Transmission Fluid: The correct type and quantity for your transmission. Check your repair manual.
* Filter: The correct replacement filter for your transmission.
* New Transmission Pan Gasket: Almost always needed when removing the pan.
* Torque Wrench: Crucial for tightening bolts to the correct specification, preventing leaks and damage.
* Gloves: To protect your hands from the old transmission fluid.
* Shop Rags or Paper Towels: For cleanup.
* Funnel: For refilling the transmission.
General Steps (Consult your repair manual for specifics):
1. Safety First: Engage the parking brake firmly and use wheel chocks. Work in a well-ventilated area.
2. Locate the Transmission Pan: Usually located underneath the transmission on the bottom of the vehicle.
3. Drain the Transmission Fluid: Locate the drain plug on the transmission pan. Carefully remove it, letting the fluid drain into your drain pan. Be prepared; it will be hot.
4. Remove the Transmission Pan: Once the fluid has drained, carefully remove the transmission pan bolts. The pan may be somewhat heavy when full of fluid. The gasket will likely stick to either the pan or the transmission case – be careful not to damage either.
5. Locate and Replace the Filter: The filter is usually attached to the transmission pan, either magnetically or with bolts. Replace it with the new filter. Clean any debris from the bottom of the pan and the magnet if your transmission has one.
6. Install New Gasket: Carefully install the new transmission pan gasket, ensuring it's properly seated.
7. Reinstall the Transmission Pan: Carefully lower the transmission pan back onto the transmission and bolt it securely, using a torque wrench to tighten the bolts to the manufacturer's specifications (found in your repair manual).
8. Refill the Transmission: Carefully refill the transmission with the correct type and amount of fluid, using a funnel. Check your repair manual for the proper amount.
9. Check Fluid Level: Start the engine and let it run for a few minutes, then check the fluid level. Add more fluid if necessary.
10. Dispose of Old Fluid Properly: Take used transmission fluid to an auto parts store or recycling center for proper disposal.
Important Considerations:
* Transmission Type: Different transmissions have different filter locations and removal procedures. Your repair manual is crucial here.
* Fluid Type: Use the correct transmission fluid specified for your van's transmission. Using the wrong fluid can cause serious damage.
* Torque Specifications: Using a torque wrench is essential to prevent leaks and damage.
* Cleanliness: Keep everything clean to prevent debris from entering the transmission.
Again, this is a simplified overview. A repair manual specific to your 1988 Dodge Ram van is absolutely essential for this job. Attempting this without one is highly risky and could lead to significant transmission damage. If you're unsure, seek professional help.
