TM 9-2320-387-24-2 I- ~~~ 30-3. DIFFERENTIAL REPAIR   (Cont’d) I 3. NOTE l   If the old pinion is marked -3 and the new pinion is marked +2, the procedure would be as follows: Refer to Old Pinion Marking column at left side of table and locate -3. Then read to right, across table, until under +2 in New Pinion Marking column. Box where two columns intersect is amount of shim thickness change required.  In this case, the number in the intersecting.box  is -0.005 in. (-0.13  mm), which represents the amount to be subtracted from the old shim thickness. If the box number had been a + figure, this amount would be added to the old shim thickness. l   This table determines an initial shim thickness. The actual pinion depth measurement  must be performed and final shim thickness adjusted as necessary. l   Pinion shims are available from 0.084-0.111 in. (2.13-2.82  mm) in increments of 0.0005 in. (0.0127 mm). Refer to Old and New Pinion Marking columns in table 30-1, Pinion Variance Table. Note on table where old and new pinion  depth variances intersect to determine amount to be added or subtracted from  original pinion depth shim for desired pinion depth starter shim. Table30-1. Pinti I +4 I +0.008 +0.007 +0.006 I I +3 +0.007 +0.006 +0.005 +2 +0.006 +0.005 +0.004 +l +0.005 +0.004 +0.003 0 +0.004 +0.003 +0.002 -1 +0.003 +0.002 +O.OOl -2 +0.002 +O.OOl 0 I ^-3 +O.OOl 0 -0.001 I I 1 I a 1 0 1 -0.001 1 -0.002 ~ -0.003 -0.004 -0.005 -0.006 -0.007 -0.008 n Variance Table (Inches). NEW PINION MARKING -1 0 +l +2 +3 +4 +0.005 +0.004 +0.003 +0.002 +O.OOl 0 +0.004 +0.003 +0.002 +O.OOl 0 -0.001 +0.003 +0.002     +O.OOl 0 -0.001 -0.002 +0.002 +O.OOl 0 -0.001 -0.002 -0.003 +O.OOl 0 -0.001 -0.002 -0.003 -0.004 0 -0.001 -0.002 -0.003 -0.004 -0.005 -0.001 -0.002 -0.003 -0.004 -0.005 -0.006 -0.002 -0.003 -0.004 -0.005 -0.006 -0.007 30-12