Main Shaft Assembly: Inspection

Disassembled parts should be washed with cleaning solvent first, then inspected carefully.

1. Bearing

   Replace the bearings in the following cases.

   • Wear, rusting or damage of the bearings
   • The bearing does not rotate smoothly or an abnormal noise is emitted when turning.
   • The bearing has other defects.
2. Bushing (each gear)

   Replace the bushing in following cases.

   • The sliding surface is damaged or abnormally worn.
3. Gear

   Replace gears in the following cases.

   • The gear teeth surface is damaged or excessively worn.
   • The contact area of the baulk ring is damaged.
   • The inner face of the gear is worn.
4. Baulk ring, synchro cone

   Replace the baulk ring and synchro cone in the following cases.

   • Wear, rusting or damage of the baulk ring
5. Shifting insert

   Replace the shifting insert if deformed, excessively worn or defective in any way.

   Fig 1: Identifying Baulk Ring And Synchro Cone

   Courtesy of SUBARU OF AMERICA, INC.