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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> External Pages >> Different car >> Section 233 (Differential & Driveline) >> Rear Axle - 198RII >> Adjustments >> Adjustments - Pinion Depth Measurement (198 Mm) >> Pinion Depth Variance

Pinion Depth Variance

WARNING: This page is about a different car, the 2008 Dodge Magnum, 2008 Dodge Charger, and 2008 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Pinion Variance & Sequence Numbers
GC0014254Courtesy of CHRYSLER LLC

Ring gear and pinion are supplied as matched sets. Identifying numbers for the ring gear and pinion are painted onto the pinion gear shaft and the side of the ring gear. A plus (+) number, minus (-) number or zero (0) along with the gear set sequence number (01 to 99) is on each gear. The pinion depth variance (1) is the amount the depth varies from the standard depth setting of a pinion marked with a (0). The remaining numbers (2) are the sequence number of the gear set. The standard depth provides the best gear tooth contact pattern.

Fig 2: Pinion Depth Shim & Collapsible Washer
GC0014260Courtesy of CHRYSLER LLC

Compensation for pinion depth variance is achieved with select shims (3). The shims are sandwiched between the pinion head bearing cup (4) and axle housing.

If installing a new gear, note the depth variance number of the original and replacement pinion. Add or subtract this number from the original depth shim to compensate for the difference in the depth variances. The numbers represent deviation from the standard in thousandths of an inch. If the number is negative, add that value to the required thickness of the depth shims. If the number is positive, subtract that value from the thickness of the depth shim.

PINION GEAR DEPTH VARIANCE

Original Pinion Gear Depth Variance Replacement Pinion Gear Depth Variance
-4 -3 -2 -1 0 +1 +2 +3 +4
+4  +0.008 +0.007 +0.006 +0.005 +0.004 +0.003 +0.002 +0.001 0
+3  +0.007 +0.006 +0.005 +0.004 +0.003 +0.002 +0.001 0 -0.001
+2  +0.006 +0.005 +0.004 +0.003 +0.002 +0.001 0 -0.001 -0.002
+1  +0.005 +0.004 +0.003 +0.002 +0.001 0 -0.001 -0.002 -0.003
0  +0.004 +0.003 +0.002 +0.001 0 -0.001 -0.002 -0.003 -0.004
-1  +0.003 +0.002 +0.001 0 -0.001 -0.002 -0.003 -0.004 -0.005
-2  +0.002 +0.001 0 -0.001 -0.002 -0.003 -0.004 -0.005 -0.006
-3  +0.001 0 -0.001 -0.002 -0.003 -0.004 -0.005 -0.006 -0.007
-4  0 -0.001 -0.002 -0.003 -0.004 -0.005 -0.006 -0.007 -0.008
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