Genuine Mazda 929 Crankshaft Seal

Mazda 929 Crankshaft Seal Parts and Q&A

• Rear Main Seal
  JF01-11-312A
  Q:

  How to replace the rear crankshaft seal on Mazda 929?

  A:

  In 1979-82 626s and GLC, to change the rear main oil seal, the engine can be left in place during a seal change, but it has to be removed during a seal and rear main bearing change. Start by removing the transmission/transaxle, then in manual models the pressure plate, clutch disc, and flywheel or in an automatic the driving plate. Drill two holes into the crankshaft rear oil seal and fit screws on each side of the hole and pry the seal out. Wipe the oil recess and crankshaft surface and grease the seal surfaces with oil and grease and install the new seal. Manual models should have the flywheel and pressure plate replaced, and automatic models should have the driving plate followed by the transmission/transaxle. In 323 and 1983-87 626 models, a seal installer and arbor press are suggested in the new seal installing process, which requires removing the rear cover and the transaxle. Wipe the new seal with oil and push it into the rear cover and re screw the cover with a given amount of torque. On 1988-89 626/MX6 models, disconnect battery, remove transaxle and rear oil pan-to-seal housing bolts and clean up surfaces then press new seal into housing and reinstall with new gaskets. In the case of the 929, lift up the car, take out transmission, empty oil, and take off the rear main seal cover to change the seal, but to make sure to apply clean engine oil before forcing the seal into the cover and screwing the holding bolts.
• Camshaft Seal
  JF01-10-602A
  Q:

  How to replace the front crankshaft seal on Mazda 929?

  A:

  This is done on engines fitted with Timing Belts in which the seal is fitted in the front of the Oil Pump body rather than the engine front cover except on GLC and 1979-82 626 models. Start by disassembling the timing belt covers, timing belt and timing belt crankshaft pulley. Very carefully peel off the seal of the front cover with a small prytool, but make sure not to damage the bore of the oil pump housing. Completely wipe away the seal bore, and any dirt or grease may cause the new oil seal to fail too soon. To fit, smear the lip of the new seal with engine oil and fit a piece of pipe, or a socket, which is a little smaller than the bore of the oil pump, to tap the new seal into position, the front of the seal lining the front of the oil pump body. Lastly, reconnect timing belt crankshaft pulley, timing belt and timing belt covers in that order of their removal.