Checking And Adjusting Ring Gear-To-Pinion Tooth Contact - Fiat 850 Sedan 1968 Shop Manual

TRANSMISSION - DIFFERENTIAL 119
R IN G
PULL SIDE
CHECKING AND
GEAR-TO· PINION
ADJUSTING
TOOTH CONTACT
COAST SIDE
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Fig. 201.
Correct tooth contact.
Contact patlern should be evenly
spread over ring gear teeth, on
both pull and coast sides.
Fig. 202.
Incorrect contact.
Pull side: heavy contact at tooth
toe, toward Ihe center.
Coast side: heavy contact al
tooth heel, toward the center.
Move pinion away from ring gear
by reducing thrust washer thick-
ness.
Fig. 203.
Incorrect contact.
Pull side: heavy contact on toe,
al looth flank bollom.
Coast side: heavy conlact on
heel, at tooth nank bottom.
Move pinion away from ring gear by
reducing thrust washer thickness.
Fig. 204.
Incorract contact.
Pull side: heavy contact at looth
heel and toward the center.
Coast side: heavy contact at tooth
toe and toward the center.
Move the pinion toward ring
gear by increasing thrust washer
thickness.
Fig. 205.
Incorrect contact.
Pull side: heavy contact on heel,
at tooth face.
Coast side: heavy contact on toe,
at tooth tace.
Move the pinion toward ring
gear by increasing thrust washer
thickness.