Adjust the Pinion Cage Shim Pack Thickness with Pinion Setting Gage

TM 9-2320-303-24-2

REAR-REAR AXLE DIFFERENTIAL CARRIER REPAIR - CONTINUED

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DIFFERENTIAL CARRIER ASSEMBLY - CONTINUED

NOTE

The value calculated in step (2) will establish a "standard shim pack thickness" without a variation. This

value will be used in calculating the shim pack thickness used with a new pinion and gear set.

(3)

Note the PC or variation number on the new pinion. Add or subtract this number as indicated by the varia-

tion sign (+ add or -subtract) from the calculated standard shim pack thickness determined in step (2).

(4)

The resulting answer indicates the thickness (in thousandths) of the new shim pack to be used. Use a mini-

mum of three shims per pack.

(5)

Assemble the new pinion and cage assembly with the correct shim pack into the carrier.

NOTE

After assembling the pinion and cage assembly with new shim pack and differential and gear assembly into

carrier, make a gear tooth contact check.

Adjust the Pinion Cage Shim Pack Thickness with Pinion Setting Gage.

(1)

Because the pinion setting gage measures the distance or depth of the pinion in the carrier from the center

line of the main differential bearing bores to the nose of the pinion, it is necessary to calculate and establish

the correct nominal or gage dimensions to work with.

CAUTION

Do not directly use the dimension (i.e., 7.875) stamped on the nose of the pinion for calculations when using

the pinion setting gage.

(2)

The dimension (i.e., 7.875) stamped on the pinion indicates the distance from the center of the differential

bearing bores to the pinion bearing shoulder. This dimension must be modified to a workable value as fol-

lows.

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