TM 10-3930-660-34 9-5 . REAR DIFFERENTIAL CARRIER ASSEMBLY - REPLACE/REPAIR/ADJUST (Cont’d) 4. Old Shim Pack Thickness 0.030 Old Bevel Pinion Spigot End Number ,  PC-2 + 0.002 Standard Shim Pack Thickness 0.032 New Pinion Cone Number ,  PC-5 - 0.005 New Shim Pack Thickness 0.027 5 .  INSTALL BEVEL PINION (29) AND BEARING CAGE (30) ,  AS AN ASSEMBLY ,  AND SHIM PACK (34) INTO THE CARRIER. NOTE Use a minimum of three shims in a shim pack .  Install the thinnest shims on both sides of the shim pack for maximum sealing. a. Install shim pack (34) and pinion bearing cage (30) .  Secure with eight capscrews (33). b. Torque capscrews (33) to 50-75 lb .  ft. c. Torque nut (31) to 300-400 lb. ft. 6. IF REMOVAL WAS NECESSARY ,  INSTALL RING GEAR (18). CAUTION Ring gear (18) must be heated before installation .  Failure to heat ring gear (18) before installation could cause damage to differential case half (22) because of a tight fit. a. Expand ring gear (18) by heating in a tank of water to a temperature of 1600F to 1800F for 10 to 15 minutes. 9-20