This process generally involves these steps:
1. Preparation:
* Safety First: Disconnect the negative battery terminal. Use jack stands to securely support the truck. Wear safety glasses and gloves.
* Gather Tools and Parts: You'll need a transmission jack, various sockets and wrenches (metric), a clutch alignment tool, a torque wrench, a new throwout bearing, possibly a new pilot bearing (inspect it!), and possibly a new clutch (inspect it closely, you might need to replace it while you're in there). Consult a repair manual specific to your truck's transmission for the correct torque specifications.
* Consult a Repair Manual: A Haynes or Chilton repair manual for your specific year and model Chevy 1500 is crucial. It will provide detailed diagrams, torque specifications, and step-by-step instructions specific to your truck's transmission type (e.g., SM465, NV3500, 700R4 automatic). The process varies significantly depending on the transmission.
2. Transmission Removal:
* Drain Transmission Fluid: Completely drain the transmission fluid.
* Disconnect Components: Disconnect the driveshaft, shift linkage, speedometer cable, and any other components connected to the transmission. This will vary depending on your transmission type.
* Support the Transmission: Use a transmission jack to carefully support the transmission's weight as you disconnect the bolts attaching it to the engine and bellhousing.
* Remove the Transmission: Carefully lower the transmission using the jack.
3. Throwout Bearing Replacement:
* Inspect the Clutch: Now is the time to thoroughly inspect the clutch disc, pressure plate, and flywheel for wear. Replacing a worn clutch while the transmission is out is far more efficient than doing it later.
* Remove the Clutch Assembly: Carefully remove the clutch pressure plate and disc. This usually involves removing several bolts.
* Access the Throwout Bearing: The throwout bearing is located on the input shaft of the transmission, within the bellhousing. Access will vary depending on the transmission design.
* Replace the Throwout Bearing: Carefully remove the old throwout bearing and install the new one, ensuring it's properly seated. The repair manual will guide you on the specific procedure for your transmission.
* Reinstall the Clutch: Install the new (or old, if reused) clutch disc and pressure plate, ensuring proper alignment using the clutch alignment tool. Tighten the pressure plate bolts to the specified torque.
4. Transmission Reinstallation:
* Install the Transmission: Carefully raise the transmission using the transmission jack and align it with the engine.
* Reconnect Components: Reconnect all the components you disconnected earlier (driveshaft, linkage, etc.).
* Fill Transmission Fluid: Fill the transmission with the correct type and amount of fluid.
* Test: Start the engine and check for leaks, unusual noises, and proper clutch function.
Important Considerations:
* Transmission Type: The process will vary significantly depending on the type of transmission in your 1995 Chevy 1500. Knowing the exact transmission model is essential.
* Specialized Tools: You'll likely need specialized tools, such as a transmission jack, clutch alignment tool, and possibly flywheel tools.
* Professional Help: If you lack the experience or tools, it's strongly recommended to take your truck to a qualified mechanic. Improper repair can cause significant and costly damage.
This is a general overview. Always refer to a repair manual specific to your vehicle's year, model, and transmission type for detailed instructions and torque specifications. Failure to do so could result in damage to your vehicle.
