GM 12584041 Seal, Crankshaft Front Oil

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Disconnect the cable from the negative battery terminal. Remove the drivebelt. Raise the vehicle and support it securely on jackstands. Remove the splash shield from below the engine compartment by removing the splash shield mounting bolts. Use a breaker bar and socket to remove the crankshaft pulley center bolt. A large pin spanner can be used to prevent the pulley from rotating while the bolt is loosened. Discard the bolt and obtain a new one for installation. It will be necessary to lock the pulley in position using a strap wrench or a large pin spanner. Be sure to wrap a length of old drivebelt around the pulley for a good grip if you are using a strap wrench. Slide the puller off the nose of the crankshaft. If the pulley is stuck, use a puller that bolts to the three threaded holes in the pulley hub. Additionally, a spacer, such as a deep socket that just fits into the hole in the pulley and bears on the crankshaft, will be required to avoid damage to the crankshaft. Use a seal puller to remove the Crankshaft Seal. A screwdriver may be used instead, if the tip is wrapped with tape to avoid scratching the crankshaft. Clean the seal bore and check it for nicks or gouges. Also examine the area of the hub that rides in the seal for signs of abnormal wear or scoring. For many popular engines, repair sleeves are available to restore a smooth finish to the sealing surface. Check with your auto parts store. Coat the lip of the new seal with clean engine oil and drive it into the bore with a seal driver or a socket slightly smaller in diameter than the seal. The open side of the seal faces into the engine. Using clean engine oil, lubricate the sealing surface of the hub. Install the crankshaft pulley/damper with a special installation tool, available at most auto parts stores. Do not use a hammer to install the pulley/damper. Install a new center bolt and tighten it to the torque. You must use a new pulley bolt. The remainder of the installation is the reverse of the removal procedure. Reconnect the battery.

Disconnect the cable from the negative battery terminal. Remove the drivebelt. Raise the vehicle and support it securely on jackstands. Remove the splash shield from below the engine compartment by removing the splash shield mounting bolts. Use a breaker bar and socket to remove the crankshaft pulley center bolt. A large pin spanner can be used to prevent the pulley from rotating while the bolt is loosened. Discard the bolt and obtain a new one for installation. It will be necessary to lock the pulley in position using a strap wrench or a large pin spanner. Be sure to wrap a length of old drivebelt around the pulley for a good grip if you are using a strap wrench. Slide the puller off the nose of the crankshaft. If the pulley is stuck, use a puller that bolts to the three threaded holes in the pulley hub. Additionally, a spacer, such as a deep socket that just fits into the hole in the pulley and bears on the crankshaft, will be required to avoid damage to the crankshaft. Use a seal puller to remove the Crankshaft Seal. A screwdriver may be used instead, if the tip is wrapped with tape to avoid scratching the crankshaft. Clean the seal bore and check it for nicks or gouges. Also examine the area of the hub that rides in the seal for signs of abnormal wear or scoring. For many popular engines, repair sleeves are available to restore a smooth finish to the sealing surface. Check with your auto parts store. Coat the lip of the new seal with clean engine oil and drive it into the bore with a seal driver or a socket slightly smaller in diameter than the seal. The open side of the seal faces into the engine. Using clean engine oil, lubricate the sealing surface of the hub. Install the crankshaft pulley/damper with a special installation tool, available at most auto parts stores. Do not use a hammer to install the pulley/damper. Install a new center bolt and tighten it to the torque. You must use a new pulley bolt. The remainder of the installation is the reverse of the removal procedure. Reconnect the battery.

Disconnect the cable from the negative battery terminal. Loosen the right front wheel lug nuts, raise the vehicle and support it securely on jackstands, and remove the wheel. Remove the inner fender splash shield from the passenger side of the vehicle. Remove the crankshaft pulley bolts using the pressure from the drivebelt to prevent the engine from rotating. Remove the drivebelt. Remove the timing belt cover and the timing belt. Use a pin spanner to hold the crankshaft sprocket stationary, then remove the crankshaft center bolt. Remove the crankshaft sprocket and the seal hub from the crankshaft. Use a seal puller to remove the crankshaft front seal. Clean the seal bore and check it for nicks or gouges. Also examine the area of the hub that rides in the seal for signs of abnormal wear or scoring. Coat the lip of the new seal with clean engine oil and drive it into the bore with a seal driver or a deep socket slightly smaller in diameter than the seal. The open side of the seal faces into the engine. Lubricate the seal contact surface of the crankshaft seal hub with clean engine oil. Install the crankshaft sprocket and tighten the center bolt to the specific torque. Reconnect the battery. The remainder of installation is the reverse of removal.

Disconnect the cable from the negative battery terminal. Remove the drivebelt. Raise the vehicle and support it securely on jackstands. Remove the splash shield from below the engine compartment. Use a breaker bar and socket to remove the crankshaft pulley center bolt. Slide the puller off the nose of the crankshaft. Use a seal puller to remove the crankshaft front seal. Clean the seal bore and check it for nicks or gouges. Coat the lip of the new seal with clean engine oil and drive it into the bore with a seal driver or a socket slightly smaller in diameter than the seal. Using clean engine oil, lubricate the sealing surface of the hub. Install the crankshaft pulley/damper with a special installation tool. Install a new center bolt and tighten it to the specific torque. Reconnect the battery.

Disconnect the cable from the negative battery terminal. Remove the drivebelt. Raise the vehicle and support it securely on jackstands. Remove the splash shield from below the engine compartment by removing the splash shield mounting bolts. Use a breaker bar and socket to remove the crankshaft pulley center bolt. A large pin spanner can be used to prevent the pulley from rotating while the bolt is loosened. Discard the bolt and obtain a new one for installation. It will be necessary to lock the pulley in position using a strap wrench or a large pin spanner. Be sure to wrap a length of old drivebelt around the pulley for a good grip if you are using a strap wrench. Slide the puller off the nose of the crankshaft. If the pulley is stuck, use a puller that bolts to the three threaded holes in the pulley hub. Additionally, a spacer, such as a deep socket that just fits into the hole in the pulley and bears on the crankshaft, will be required to avoid damage to the crankshaft. Use a seal puller to remove the Crankshaft Seal. A screwdriver may be used instead, if the tip is wrapped with tape to avoid scratching the crankshaft. Clean the seal bore and check it for nicks or gouges. Also examine the area of the hub that rides in the seal for signs of abnormal wear or scoring. For many popular engines, repair sleeves are available to restore a smooth finish to the sealing surface. Check with your auto parts store. Coat the lip of the new seal with clean engine oil and drive it into the bore with a seal driver or a socket slightly smaller in diameter than the seal. The open side of the seal faces into the engine. Using clean engine oil, lubricate the sealing surface of the hub. Install the crankshaft pulley/damper with a special installation tool, available at most auto parts stores. Do not use a hammer to install the pulley/damper. Install a new center bolt and tighten it to the torque. You must use a new pulley bolt. The remainder of the installation is the reverse of the removal procedure. Reconnect the battery.

Disconnect the cable from the negative battery terminal. Loosen the right front wheel lug nuts, raise the vehicle and support it securely on jackstands, and remove the wheel. Remove the inner fender splash shield from the passenger side of the vehicle. Remove the crankshaft pulley bolts using the pressure from the drivebelt to prevent the engine from rotating. Remove the drivebelt. Remove the timing belt cover and the timing belt. Use a pin spanner to hold the crankshaft sprocket stationary, then remove the crankshaft center bolt. Remove the crankshaft sprocket and the seal hub from the crankshaft. Use a seal puller to remove the crankshaft front seal. Clean the seal bore and check it for nicks or gouges. Also examine the area of the hub that rides in the seal for signs of abnormal wear or scoring. Coat the lip of the new seal with clean engine oil and drive it into the bore with a seal driver or a deep socket slightly smaller in diameter than the seal. The open side of the seal faces into the engine. Lubricate the seal contact surface of the crankshaft seal hub with clean engine oil. Install the crankshaft sprocket and tighten the center bolt to the specific torque. Reconnect the battery. The remainder of installation is the reverse of removal.

The crankshaft and seal bore should be thoroughly cleaned and degreased by wiping them with a rag soaked in lacquer thinner or acetone.

The manufacturer recommends using special studs EN 46109, seal alignment tool EN 47839, and handle J 42183 to ensure correct alignment of the seal.

Pry out the old seal using a special removal tool or a flat-blade screwdriver, taking care not to scratch or damage the crankshaft sealing surface or the bore in the engine block.

Complete the installation in reverse order of removal.

Install a new center bolt and tighten it to the specified torque, ensuring a new pulley bolt is used.

It is important because the replacement seal must be installed in the same manner as the old seal.

Carefully pry the oil seal out of the cover. If a seal removal tool is unavailable, you can partially thread a self-tapping screw into the seal and use pliers as a lever to extract it.

A special rear main oil seal installation tool or a socket with the exact diameter of the seal can be used to drive the seal in place.

First, raise the vehicle and support it securely on jack stands, then remove the under-vehicle splash shield.

Position the new seal onto the crankshaft, ensuring the edges are not rolled over.

Install a new center bolt and tighten it to the specified torque, ensuring a new pulley bolt is used.

Follow the instructions that come with the installation tool, attaching it to the crankshaft and tightening it.

The final step is to add oil as necessary and run the engine to check for leaks.

Lubricate the sealing surface of the hub with clean engine oil, then install the crankshaft pulley/damper using a special installation tool, avoiding the use of a hammer.

Lubricate only the inside of the pulley hub with clean engine oil before installing the crankshaft pulley.

Install the new seal in the cover with the lip facing inward, driving it into place with a seal driver or a large socket and hammer, ensuring it enters squarely and is at the correct depth.

Pry out the old seal using a special removal tool or a flat-blade screwdriver, taking care not to scratch or damage the crankshaft sealing surface or the bore in the engine block.

Inspect the pulley hub surface for grooves caused by prolonged contact with the seal; if damaged, replace the pulley.

Pry out the old seal using a special seal removal tool or a flat-blade screwdriver.

Reinstall the crankshaft sprocket and timing belt, then run the engine and check for oil leaks at the front seal.

The new seal should be carefully positioned onto the crankshaft, ensuring that the edges are not rolled over.

The old seal can be pried out using a seal removal tool or a flat blade screwdriver.

A special rear main oil seal installation tool or a socket with the exact diameter of the seal can be used to drive the seal in place.

Begin by disconnecting the cable from the negative battery terminal.

Remove the cranks aft pulley and note how the seal is installed; the new one must be installed to the same depth and facing the same way.

Clean the seal bore and check for nicks or gouges, examining the hub area for abnormal wear or scoring; repair sleeves may be available for many popular engines.

A special aftermarket tool may be available at local auto parts stores to assist with this process.

Clean the seal bore and check for nicks or gouges, as well as examining the hub for abnormal wear.

Drive the seal in squarely and only until it is flush with the back of the seal plate, ensuring the spring side is facing in.

The new seal should be carefully positioned onto the crankshaft, ensuring that the edges are not rolled over.

Install a new center bolt and tighten it to the specific torque.