TM 10-3930-660-34 9-5 . REAR DIFFERENTIAL CARRIER ASSEMBLY - REPLACE/REPAIR/ADJUST (Cont’d) 2. CHECK RUNOUT OF RING GEAR (18). a. Attach dial indicator on mounting flange of differential carrier (2) .  Adjust dial indicator so that plunger is against back surface of ring gear (18). b. Adjust dial of indicator to zero. c. Rotate differential assembly and ring gear (18) and read dial indicator .  If runout of ring gear (18) exceeds 0.008 inch , remove differential assembly and ring gear (18) ,  DISASSEMBLY STEP 1,  and inspect differential assembly for problem .  Replace defective parts and install differential assembly and ring gear (18) into differential carrier (2) ,  ASSEMBLY STEP 7. Repeat preload adjustment of differential bearings ,  STEP 1. 3. ADJUST BACKLASH OF RING GEAR (18). a. Attach a dial indicator to the mounting flange on differential carrier (2). b. Adjust dial indicator so that plunger is against the tooth surface on ring gear (18). c. Adjust dial of indicator to zero. d. Hold bevel pinion in position so it does not move. e. Read dial indicator while rotating ring gear (18) in both directions against teeth of bevel pinion. 9-27