However, if you're determined to do it yourself, here's a general overview. Always consult your owner's manual for the specific procedure and torque specifications for your van. This information is crucial and will override anything in this general guide.
Before you begin:
* Gather your supplies: New transmission fluid (the correct type and amount specified in your owner's manual), a new transmission filter (if applicable – some transmissions don't have one), a drain pan, a funnel, wrenches (sizes will vary depending on your van), jack and jack stands (or ramps), gloves, and rags. You might also need a torque wrench for proper tightening.
* Warm up the transmission: Run the van for 10-15 minutes to warm the fluid, making it flow more easily.
* Safety first: Ensure the van is parked on a level surface, engaged in park (automatic), and the parking brake is firmly set. Use jack stands to support the vehicle properly after raising it with a jack – never work under a vehicle supported only by a jack.
General Steps (Automatic Transmission):
1. Locate the transmission pan: This is usually located on the bottom of the transmission.
2. Drain the fluid: Position the drain pan under the transmission pan and carefully remove the drain plug. Let the fluid drain completely. This can take a while.
3. Remove the transmission pan: Once drained, remove the transmission pan bolts. Some fluid will likely spill, so have extra rags handy. Inspect the pan for any debris or damage. Replace the pan gasket if it's damaged or old.
4. Replace the filter (if applicable): If your transmission has a filter, replace it with a new one. Follow the instructions specific to your transmission filter.
5. Clean the pan: Clean any debris from the inside of the transmission pan.
6. Reinstall the pan: Install the new gasket (if necessary) and carefully reinstall the transmission pan. Tighten the bolts evenly to the manufacturer's specified torque.
7. Refill the transmission: Using a funnel, carefully add the new transmission fluid through the fill tube (location varies by model; consult your owner's manual). You may need to check the fluid level periodically and add more as needed. The dipstick, if present, is usually found near the transmission. Some newer vans use a method of checking the fluid level by measuring the temperature and then adding the fluid until it overflows.
8. Check the fluid level: Once filled, check the fluid level according to your owner's manual. It's crucial to get this right, as overfilling or underfilling can damage the transmission.
9. Start the engine: Run the engine for a few minutes, then check the fluid level again. You may need to add more fluid.
10. Lower the vehicle: Carefully lower the van using the jack.
Manual Transmission:
Changing the fluid in a manual transmission is different. It usually involves removing the fill and drain plugs and letting the fluid drain. Refill to the correct level, as specified in your owner's manual. This is often a simpler process, but again, consult your owner's manual for the precise method.
Important Considerations:
* Fluid Type: Use only the transmission fluid specified in your owner's manual. Using the wrong fluid can ruin your transmission.
* Torque Specifications: Tighten all bolts to the correct torque using a torque wrench. Over-tightening can damage the bolts or pan.
* Professional Help: If you're not comfortable with this process, take your van to a qualified mechanic. The cost of a professional transmission service is much less than the cost of a transmission repair or replacement.
This is a general guide only. Always refer to your owner's manual for the specific procedures and torque specifications for your Dodge Ram van. Failure to do so could result in damage to your transmission.
