Main Shaft Assembly for Single-Range: Installation

Install the needle bearing and oil seal to the front of the transmission single-range main shaft assembly.
NOTE:
- Wrap the clutch connection (splined section) with vinyl tape to prevent damage to the oil seal.
- Apply NICHIMOLY N-130 to the sealing lip of the oil seal.
- Use a new oil seal.
Rotate the reverse idler sub gear by two teeth from free status to make it engage with the reverse gear of the main shaft and install the main shaft assembly.
1. When the reverse idler sub gear is at free status, put alignment marks on reverse idler sub gear and reverse idler gear.
2. Rotate the reverse idler sub gear in the arrow direction by two teeth from the alignment mark and secure it with a wire.
  
  Fig 1: Rotating Reverse Idler Sub Gear In Arrow Direction
  Courtesy of SUBARU OF AMERICA, INC.
3. After installing the main shaft assembly, check that the reverse idler gear and reverse idler sub gear are misaligned by two teeth and remove the wire.
  CAUTION: Make sure to remove the wire.
Install the transmission case knock pin into the knock pin hole of the needle bearing outer race.
NOTE:
- Align the end face of the seal with surface (A) when installing the oil seal.
  
  Fig 2: Aligning End Face Of Seal With Surface
  Courtesy of SUBARU OF AMERICA, INC.
- Face the cutout portion of the snap ring for the double taper roller bearing to the drive pinion shaft assembly.
  
  Fig 3: Identifying Cutout Portion Of Snap Ring
  Courtesy of SUBARU OF AMERICA, INC.
Install the drive pinion shaft assembly. Refer to Drive Pinion Shaft Assembly .
Install the transmission case. Refer to Transmission Case .
Install the transfer case together with the extension case assembly. Refer to Transfer Case and Extension Case Assembly .
Install the manual transmission assembly to the vehicle. Refer to Manual Transmission Assembly .