New Holland Workmaster 50, Service Manual

Page: 237 / 1067

Front axle system - Powered front axle
4. Measure the backlash between pinion and ring gear,
using a dial gauge (1) perpendicular to the outer edge
of a tooth on the ring gear (2) .
5. Repeat the measurement in two other positions 120°
apart and compare the average of the three values
(Gm) with the prescribed normal backlash specifica-
tion of
0.18 mm ( 0.007 in ) - 0.23 mm ( 0.009 in ) aver-
age value 0.20 mm ( 0.008 in ).
If the measured backlash exceeds the prescribed
value, adjust the threaded adjustment rings by screw-
ing one of the rings in and the other out by the same
amount to correct the axial preload and thus obtain the
prescribed backlash.
NDIL14TR00427AB
4
6. With a dial gauge positioned perpendicular to the out-
side edge of one of the ring gear teeth, check that the
backlash between the pinion and ring gear is within
the tolerance limits of
0.18 mm ( 0.007 in ) - 0.23 mm
( 0.009 in ).
GNIL14TR04393AB
5
7. Using a wrench, tool number 380000252 (A) turn the
threaded adjustment ring and check, using torque
wrench
(2) that the combined rolling resistance torque
of the ring gear and pinion bearings is:
A2 = A1 +
1.0 N·m ( 0.74 lb ft ) to 1.5 N·m ( 1.11 lb ft ).
where:
A2 = combined ring gear/pinion rolling resistance
torque
A1 = rolling resistance torque of pinion only as mea-
sured previously
1.0 N·m ( 0.74 lb ft ) to 1.5 N·m ( 1.11 lb ft ) = rolling re-
sistance torque of crown wheel only measured at the
end of the pinion using wrench, tool number
380000257
and a torque wrench.
GNIL14TR04397AB
6
8. Tighten the cap bolts see figure in Four-Wheel Drive
(4WD) axle - Torque (25.100) to a torque of 113 N·m
( 83 lb ft ).
9. Install the safety plate, screwing the threaded adjust-
ment ring in or out up to the nearest notch.
10. Attach the bevel drive/differential to the axle casing af-
ter having carefully cleaned and degreased the mat-
ing surfaces and applied a bead of gasket eliminator
L
OCTITE
® 518 , approx. 2 mm ( 0.08 in ) wide along the
line shown in the figure.
47866583_ 02/12/2015
25.1 [25.100] / 28