OEM 2004 Toyota Sienna Crankshaft Seal

2004 Toyota Sienna Parts Questions & Experts Answers

• Q: How to replace the Crankshaft Seal on 2004 Toyota Sienna?

  A: The first step to replace the engine rear oil seal requires removal of the automatic transaxle assembly for 2WD drive type or automatic transmission with transfer for 4WD drive type. You must hold the crankshaft with Special Service Tool: 09213-54015 (91651-60855), 09330-00021 during the removal of the drive plate and ring gear sub-assembly. Then remove eight bolts, the rear spacer, drive plate, and front spacer. You must remove the oil seal lip with a knife before using a taped screwdriver to pry out the oil seal after inspecting the crankshaft for damage to smooth damaged areas with 400-grit sandpaper. The installation of the new oil seal requires MP grease application to the lip while maintaining its cleanliness from foreign substances followed by insertion with Special Service Tool: 09223-15030, 09950-70010 (09951-07100) and a hammer until the seal reaches the rear oil seal retainer edge but with precaution against slanting motion and excessive grease removal from the crankshaft. Continue with drive plate and ring gear sub-assembly installation following a repeated use of Special Service Tool: 09213-54015 (91651-60855), 09330-00021 to grasp the crankshaft before cleaning bolts and bolt holes while using adhesive (Part No. 08833-00070, THREE BOND 1324 or equivalent) on bolt threads for installation of front spacer, drive plate and rear spacer on the crankshaft. The engine should not start for at least one hour after bolt installation except when the technician removes and returns the torque wrench and starts the engine before 60 minutes have elapsed. The automatic transmission with transfer for 4WD drive type or the automatic transaxle assembly for 2WD drive type should be reinstalled at the end.