Subaru Workshop Service and Repair Manuals

Extension Housing: Specifications

Thrust washer (52 x 61 x t) to ball bearing side clearance: 0.05 - 0.30 mm (0.0020 - 0.0118 inch) 

Thrust washer to center differential side clearance: 0.15 - 0.35 mm (0.0059 - 0.0138 inch)