New Holland Workmaster 50, Service Manual

Page: 308 / 1067

Rear axle system - Rear bevel gear set and differential
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.
GNIL14TR04269AB
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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.
GNIL14TR04270AB
2
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.
GNIL14TR04271AA
3
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