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Main Shaft Assembly: Installation

WARNING: This page is about a different car, the 2020 Subaru Impreza. However, it is still accessible from the selected car via links, so may be relevant.
  1. Attach the needle bearing and new oil seal to the front of the main shaft assembly.
    NOTE:
    • Wrap the clutch splined section with vinyl tape to prevent damage to the oil seal.
    • Apply NICHIMOLY N-130 or the equivalent to the sealing lip of the oil seal.
  2. Fit the knock pin hole of the needle bearing outer race to the transmission case knock pin, and install the main shaft assembly.
    NOTE:
    • Align the end face of the seal with surface (A) when installing the oil seal.
      G13604317Courtesy of SUBARU OF AMERICA, INC.
    • Face the cutout portion of the snap ring for the ball bearing to the drive pinion shaft assembly.
    G08548699Courtesy of SUBARU OF AMERICA, INC.
  3. Install the drive pinion shaft assembly. Refer to MANUAL TRANSMISSION AND DIFFERENTIAL (5MT)>DRIVE PINION SHAFT ASSEMBLY>INSTALLATION .
  4. Check each shifter fork. Refer to MANUAL TRANSMISSION AND DIFFERENTIAL (5MT)>SHIFTER FORK AND ROD>INSPECTION .
  5. Select a main shaft rear plate. Refer to MANUAL TRANSMISSION AND DIFFERENTIAL (5MT)>MAIN SHAFT ASSEMBLY>ADJUSTMENT .
  6. Install the transmission case. Refer to MANUAL TRANSMISSION AND DIFFERENTIAL (5MT)>TRANSMISSION CASE>INSTALLATION .
  7. Install the transfer case together with the extension case assembly. Refer to MANUAL TRANSMISSION AND DIFFERENTIAL (5MT)>TRANSFER CASE AND EXTENSION CASE ASSEMBLY>INSTALLATION .
  8. Install the manual transmission assembly to the vehicle. Refer to MANUAL TRANSMISSION AND DIFFERENTIAL (5MT)>MANUAL TRANSMISSION ASSEMBLY>INSTALLATION .
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