FRONT DIFFERENTIAL CARRIER ASSEMBLY REPLACEMENT/REPAIR/ADJUSTMENT - continued

TM 10-3930-673-34

(4)

If replacement of bevel pinion (12)

and ring gear (13) set is necessary,

adjust thickness of shim pack for

new bevel pinion and ring gear set.

NOTE

If a new bevel pinion and ring gear

set is installed, or if the depth of the

bevel pinion has to be adjusted,

calculate the needed thickness of

the shim pack using the following

procedure:

(a)

Use a micrometer to measure

thickness of old shim pack (32)

removed from under bearing

cage (28). Record measurement.

(b)

Read variation number on spigot

end of old bevel pinion (12). Record

number.

NOTE

Bevel pinion spigot end number can

be in l,000ths of an inch or 100ths of

a millimeter. Example: +3 = 0.003

in., +0.03 = 0.03 mm. Be sure to

convert millimeters to inches by

multiplying by 0.039 before

performing the following

calculations:

(c)

Subtract number from spigot

bearing end of old bevel pinion (12)

from shim pack (32) thickness

TR00263

measured in Step (a) if old number

is a plus (+) value. If old bevel

pinion spigot number is a minus () value, add number from spigot end of old bevel pinion to

shim pack thickness. This is the thickness of the standard shim pack, without a variation.

(d)

Read number on spigot end of new bevel pinion (12). Record number

(e)

Add number from spigot end of new bevel pinion (12) to standard shim pack (32) thickness

calculated in Step (c), if number on spigot end of new bevel pinion is a plus (+). If new pinion

cone number is a minus (), subtract new pinion cone number from standard shim pack

thickness calculated in Step (c). This is the thickness of the new shim pack.

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