However, here's a general overview of the steps involved. This is NOT a complete guide and omits many crucial details. Consult a detailed repair manual specific to your van's engine and transmission type (e.g., a Haynes or Chilton manual) for accurate instructions and torque specifications.
I. Engine Overhaul:
1. Preparation: Disconnect the battery, drain all fluids (engine oil, coolant, transmission fluid), and remove any components that interfere with engine removal (e.g., belts, hoses, air intake system). Document all connections thoroughly with photos or diagrams.
2. Engine Removal: This usually requires engine hoist and possibly removing other components (e.g., radiator, power steering pump) for access. Support the engine properly during removal to prevent damage.
3. Disassembly: Carefully disassemble the engine, noting the order and location of each part. This includes removing cylinder heads, pistons, crankshaft, connecting rods, camshaft, etc. Clean all parts thoroughly.
4. Inspection and Replacement: Inspect all parts for wear and tear. Replace worn or damaged components (e.g., piston rings, bearings, seals, gaskets). This may involve machining or honing of engine blocks and cylinder heads.
5. Reassembly: Reassemble the engine meticulously, following the reverse order of disassembly. Ensure proper torque specifications for all bolts and nuts.
6. Installation: Reinstall the engine into the vehicle, reconnect all components, and refill fluids.
II. Automatic Transmission Overhaul:
1. Preparation: Drain the transmission fluid. Disconnect the transmission cooler lines, driveshaft, and linkage. Support the transmission properly.
2. Removal: This often requires removing the engine/transmission as a unit or using a transmission jack. Consult a manual for your specific vehicle.
3. Disassembly: Carefully disassemble the transmission, noting the location and order of all parts, including the valve body, planetary gears, clutches, and bands.
4. Inspection and Replacement: Inspect all parts for wear. Replace worn components, including clutches, bands, seals, gaskets, and filters. This may require specialized tools and knowledge of transmission operation.
5. Reassembly: Reassemble the transmission carefully, following the reverse order of disassembly. Pay close attention to valve body adjustments and proper lubrication.
6. Installation: Reinstall the transmission, reconnect all components, and refill with the correct type and amount of transmission fluid.
III. Post-Overhaul Procedures:
* Fluid Flushes: After reassembly, flush all fluids thoroughly (engine coolant, engine oil, transmission fluid).
* Testing: Run the engine and transmission to check for leaks and proper operation.
* Break-in Period: Observe the recommended break-in period for the engine and transmission.
Important Considerations:
* Special Tools: You'll need specialized tools for both the engine and transmission overhaul. These may include engine hoist, transmission jack, various sockets and wrenches, torque wrenches, and specialized transmission tools.
* Repair Manual: A detailed repair manual specific to your 1995 Ford E350 is essential.
* Parts: Sourcing the correct parts is crucial. Use OEM or high-quality aftermarket parts.
* Safety: Engine and transmission work can be dangerous. Take necessary safety precautions.
Again, this is a highly simplified overview. Attempting this without the necessary knowledge and tools is highly discouraged. The cost of parts and labor to perform this work professionally will likely exceed the value of the vehicle unless it's a particularly valuable model. Weigh your options carefully before proceeding.
