New Holland T8010 Manual page 515

Pattern Movements Summarized
EXAMPLE OF CORRECT PATTERN
1. Decreasing backlash moves the ring gear closer
to the pinion.
Forward Pattern (convex side of ring gear) moves
lower and towards the toe.
Reverse Pattern (concave side of ring gear)
moves lower and towards the toe.
2. Increasing backlash moves the ring gear away
from the pinion.
Forward Patter n moves slightly higher and
toward heel.
Reverse Pattern moves higher and toward heel.
Section 25 - Four-Wheel Drive Front Axle - Chapter 8
RR98K050
RR98K056
RR98055
3. A thicker pinion position shim with the backlash
constant moves the pinion closer to the ring gear.
Forward Pattern moves deeper on the tooth
(flank contact) and slightly toward the toe.
Reverse Pattern moves deeper on the tooth and
toward the heel.
4. A thinner pinion position shim with the backlash
constant moves the pinion away from the ring
gear.
Forward Pattern moves toward the top of the
tooth (face contact) and toward the heel.
Reverse Pattern moves toward the top of the
tooth and slightly toward the toe.
25-8-26
RR98K054
RR98K056