Case 580SR Service Manual page 412

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60
Once the adjustment of the pinion-ring gear back-
lash has been carried out, check also that there is a
minimum preloading on the differential box bear-
ings.
Repeat the whole sequence of the above mentioned
operations till the indicated conditions are reached.
Once the pinion-ring gear backlash has been estab-
lished, measure the total preloading (T) of the bear-
ings (pinion-ring
dynamometer, whose cord is wound on the splined
end of the pinion. The measured value should be
within the following range:
T = (P+3.90) ÷ (P+5.90) daN
where P is the effectively measured pinion preload-
ing.
See section "Pinion assembly".
S WARNING
All preloadings must be measured without the seal
ring.
If the measurement is not within the requested
range, check well the assembly of each component
and operate on the adjuster ring nuts (3) and (7) of
the differential support:
(A)- if the total preloading is less than the given
range, screw in both adjuster ring nuts (3) and
(7) by the same measure, keeping the pinion-
ring gear backlash value unchanged.
(B)- if the total preloading is higher than the given
range, screw in both ring nuts (3) and (7) by the
same measure, keeping the pinion-ring gear
backlash value unchanged.
SECTION 25 - FRONT AXLES
gear system), using a
A
B
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F27293
F27296
A
B
F27297