1034
Model Code Page
67. Powered front axle Carraro
1. 10. 1999
8450--8950 674 8
48. When the tooth backlas h is co rrect, ensure that the ad-
justing nuts keep the differential bearings without clearance
or slightly pre---loaded. If the nuts must further be tightened
(when adjusting preload), the differential must not move
axially.
49. Wind the s pring balance rope round the bevel pinion
shaft (Ø 34,8 mm).
50. Measure the common rolling resistance of the differen-
tial bearings and the bevel pinion shaft bearings (T)two
three times. Read off the value when the shaft is rotating. In
the beginning more power is required.
Thecorrectvalue(T), is:
T = (P+60 N)...(P+90 N) i.e. (P+6 kg)... (P+9 kg)
In which:
T= common rolling resistance of the differential bearings
and the bevel pinion shaft bearings
P= rolling resistance of the bevel pinion shaft bearings
(measured earlier))
6 k g --- 9 k g (60---90 N) =differential bearing allowable roll-
ing resistance.
51. If the value is not within the given limits, tighten the dif-
ferential bearing adjusting nut (if resistance is too small)
and vice versa. Always after tightening the nut, rotate the
differential many times.
IMPORTANT! Do not affect the tooth backlash when
tightening the adjusting nuts. After the rolling resistance
adjustment, check once more the too th backlash.
52. The teeth contact surface can be checked (if necessary)
by using marking colour. The picture above shows the cor-
rect colour spread pattern on the teeth.
J. Fi tti ng di fferential into axle housing
53. Tighten the differential bearing caps to a correct torque
(270 Nm)
54. Refit the locking tabs. Turn the nuts, if necessary, so that
the tabs fit into the notches on the nuts. Tighten the screws
to 13 Nm.
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