New Holland WorkMaster 50 Service Manual page 308

Differential - Backlash
Differential pinion and side gear backlash adjustment
Fit the two side gears (15) in the differential carrier with-
out the shims (12).
Install differential pinions (13) complete with thrust
washer (14) and journal (3) and tighten bolts (1) a few
turns to prevent journal work out.
Bring left-hand side gear into full contact with differential
pinion.
Using a depth gauge measure dimension (H1) at two
diametrically opposed points and average the two read-
ings.
Then push side gear into contact with differential carrier
and measure dimension (H2).
Repeat the same operations on right-hand side gear.
End float of each side gear without the baulk ring must
be:
Gs or Gd = H1 - H2
where:
Gs = Left-hand side gear end float.
Gd = Right-hand side gear end float.
H1 and H2 = Dimensions measured on left-hand side
or right-hand side gears.
Normal differential pinion and side gear backlash is
0.15 mm (0.01 in).
Note that the average ratio normal backlash to the
equivalent side gear end float is 1 to 1.7.
Side gear end float corresponding to normal backlash
will be:
0.15 x 1.8 = 0.250 mm (0.010 in).
Consequently the shim thickness required in the differ-
ential carrier is given by:
Ss = Gs - 0.25 (for left-hand side gear)
Sd = Gd - 0.25 (for right-hand side gear)
Available shims are 1.200 - 2.000 mm (0.047 -
0.079 in).
Install closest to calculated thickness.
Adjustment of bevel wheel bearings and crown pinion
NOTE: Place O-ring in the housing before fitting cover
plate.
1. Fit the locator pins (1) and fit the cover plate (2) tighten
the plate with Allen screws (3), screw out two Allen
screws (4) and remove lock plate from both sides.
Rear axle system - Rear bevel gear set and differential
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GNIL14TR04269AB
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GNIL14TR04270AB
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GNIL14TR04271AA