Toyota 90311-89003 Seal, Engine Rear Oil

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Remove the engine/transaxle assembly and separate the transaxle from the engine. Remove the flywheel or driveplate and pry the Crankshaft Seal from the engine's rear, noting its depth for new seal installation. Clean the seal bore thoroughly. Lubricate the new seal's outside diameter and install it over the crankshaft end, ensuring the seal lip points towards the engine. Use a seal installation tool to press the new seal into place. If unavailable, use a large socket or blunt tool to drive the seal into the bore. Reinstall the flywheel or driveplate, reattach the transaxle to the engine, and reinstall the assembly.

First of all, mount the crankshaft and main bearing caps, then place the new crankshaft seal in the retainer and bolt it to the block. Also, clean the retainer and then oil the seal's edge before driving it into place. Apply a new gasket with sealant, then gradually tighten the bolts.

The crankshaft seal journal and the lip of the new seal should be lubricated with multi-purpose grease.

Run the engine and check for oil leaks at the front seal.

The remainder of the installation is the reverse of the removal process.

Install the driveplate.

Check the surface on the pulley hub that the oil seal rides on. If the surface has been grooved from long-time contact with the seal, the pulley should be replaced.

Carefully pry the seal out of the timing chain cover with a screwdriver or seal removal tool, being careful not to scratch the crankshaft. If using a screwdriver, wrap tape around the tip to avoid scratching the housing bore or damaging the crankshaft, as damage to the crankshaft can lead to leaks with the new seal.

Using a seal driver or a socket with an outside diameter slightly smaller than the outside diameter of the seal, carefully drive the new seal into place with a hammer. Ensure it's installed squarely and driven in to the same depth as the original. Check the seal after installation to make sure the spring didn't pop out of place.

The new seal should be evenly driven into the retainer with a wood block or a section of pipe that is slightly smaller in diameter than the outside diameter of the seal. It is important to ensure that the seal is not cocked in the retainer bore, and the new seal should be approximately flush with the surface of the retainer.

Drive the new seal into place using a seal driver or a socket with a slightly smaller outside diameter. Make sure it's installed squarely and to the same depth as the original.

The retainer bolts should be installed and tightened, ensuring that the bottom sealing flange of the retainer does not extend below the bottom sealing flange of the block.

Reinstall the crankshaft pulley and tighten the crankshaft pulley retaining bolt. The remainder of installation is the reverse of the removal.

Note how far the seal is recessed in the bore.

A large socket, section of pipe, or a blunt tool can be used to carefully drive the new seal squarely into the seal bore and flush with the edge of the engine block.

Reinstall the crankshaft timing sprocket and timing belt, being careful not to scratch the crankshaft sensor portion of the sprocket. Run the engine and check for oil leaks at the front seal.