Reverse Idler Gear 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.
6. Check clearance between the snap ring and washer.

   Clearance specification: 

   0.1 - 0.3 mm (0.0039 - 0.0118 in) 

   Fig 2: Checking Clearance Between Snap Ring And Washer

   Courtesy of SUBARU OF AMERICA, INC.

   If the clearance is out of the specification, select a snap ring from the following table and replace it.

   Snap ring
   Part No.	Thickness mm (in)
   031319000	1.50 (0.059)
   805019030	1.60 (0.062)
   805019010	1.72 (0.068)

   After replacing the snap ring, inspect the clearance.