New Holland WorkMaster 50 Service Manual page 260

Final drive driving pinion - Adjust – (4WD) Front Axle
Determining the thickness of the drive pinion position adjustment shim
Proceed as follows.
1. Install tool number 380000249 (1) in the bevel drive-
differential housing complete with outer bearing rings,
ring gear bearings adjustment ring, ring gear bearings
adjustment shim, circlip and differential support caps.
2. Screw the cones (2) of tool number 380000249 (1) in or
out in order to orientate the micrometer shaft inline with
the inner bearing ring while eliminating the end play
between the cones and the outer rings of the ring gear
bearings.
3. Adjust the micrometer so that the shaft is in contact with
inner bearing race and measure the distance (H3) thus
obtained.
4. Determine the correct distance (H5) between the ring
gear axis and the large diameter base of the pinion:
H5 =H4 ± C
where:
H4 = 95 mm (3.74 in) nominal distance between the
ring gear axis and the large diameter base of the pinion.
C= correction value stamped on pinion preceded by a +
or - sign, (if other than 0), to be added to or subtracted
from the nominal distance (H4) according to the sign.
5. The thickness of the adjustment shim will be given by:
Shim = H3 - H5
where:
H3 = the distance measured using the micrometer.
H5 = corrected nominal distance between the crown
wheel axis and the large diameter base of the pinion.
6. Remove tool number 380000248 and tool number
380000249 from bevel drive housing.
7. Install the drive pinion complete with: inner bearing
races, spacer and adjustment shims of the previously
determined thickness.
Pinion bearing preload shim (1) is located between
spacer and rear bearing.
0.5 mm (0.020 in)
2.5 mm (0.098 in)
2.55 mm (0.100 in)
Front axle system - Final drives
Available shim sizes
47866583_ 02/12/2015
25.4 [25.310] / 5
2.75 mm (0.108 in)
2.8 mm (0.110 in)
2.85 mm (0.112 in)
1
GNIL14TR04423AB
2
GNIL14TR04424AB