Iveco Stralis AT/AD. Manual — part 170
77238
36380
Figure 65
Figure 66
Figure 67
Apply on the housing a special extractor S.P. 2346, (5) and
extract the pinion from the parts: spacer (1), gear (2), spacer
(3) and bearing (4).
Then remove the above-mentioned parts from the housing.
Dismantle carrier bearing cups (1, 2, 3) using a drift.
Block rotation of the bevel pinion with the tool S.P. 2373 (1);
with wrench 99344069 (2) and the multiplier (3) remove the
nut fastening the bearings to the bevel pinion and the washer
beneath.
77237
Figure 68
36381
Place tool 99348001 (2) under the taper roller bearing (1) and
pull it off the bevel pinion using a press.
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AXLES IN TANDEM MERITOR RP 160 E (R 2478) (INTERMEDIATE)
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77240
Figure 69
INTER-AXLE DIFFERENTIAL COMPONENTS - EXPLODED VIEW
AXLES IN TANDEM MERITOR RP 160 E (R 2478) (INTERMEDIATE)
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Thoroughly clean the individual parts making up the differen-
tial. Lubricate the bearings and spin the roller cages freely;
these should rotate evenly without tight spots.
Check the seating surfaces of the bevel crown wheel and the
bedding surface of the half cage so that the crown wheel ad-
heres to it perfectly; distortion of these faces would cause
vibration of the crown wheel attachment screws, compromis-
ing the satisfactory operation of the unit.
Use hook (1) to raise the gear cage assembly and position on
stand 99371047 (3).
19379
36316
Figure 70
Figure 71
Unscrew nuts (1) and remove them with screws. Drive out
bevel crown wheel (2).
Dismantling gear cage
36317
Figure 72
Use tool 99348001 (1) and reaction block 99345055 (2) to
remove bearing (3) and bearing (4).
19383
19382
Figure 73
Figure 74
Mark the two casing halves (2 and 3) and the spider as
indicated in the figure.
Unscrew screws (1) joining the casing halves. Lift the casing half
(2).
Remove differential gear (2) with the associated thrust washer
(1). Remove spider (6) with the four planetary gears (5)
complete with thrust washers (3). Take the spider/planetary
gear assembly apart. Remove the other differential gear with
its thrust washer from the half cage (4).
Checking differential components
!
Thoroughly clean threads of screws, studs and ring
nuts to prevent clearance or torque settings from
being altered.
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19397
19391
19383
36323
Figure 75
Figure 76
Figure 77
Figure 78
Heat the support bearing (2) for the opposite side of the lock-
ing differential in a circulating air oven to a temperature of
100
˚C for about 15’ and fit it to the gear cage (3) using a suit-
able drift (1).
Position half cage (2) on fixture 99371047.
Position differential gear thrust washer (1) in the half cage (2)
and then fit differential gear.
Fit spider (6) complete with planetary gears (5) and associated
thrust washers (3) to half cage (4).
Position second differential gear (2) with thrust washer (1).
Check that there is no excessive wear in the splined portion
for fitting the flange to the pinion; if there is, replace the pinion.
Check the planetary gears and associated thrust washers, the
spider and differential gears and thrust washers.
Replace all seals and gaskets, the locking pin for the adjustment
ring nut and all lock washers.
!
If it should be necessary to replace the crown wheel
or pinion, both must be replaced as the parts are sup-
plied as matched pairs.
Assembling gear cage
!
It is always advisable to renew screws (2).
34850
Figure 79
Heat bearing (1) in a circulating air oven to a temperature of
100
˚C for about 15’ and fit it to the gear cage (2) using a suit-
able drift.
Lock the differential with the parts (1); fit on the half box (3).
Check that the marks made at the time of removal coincide.
Apply a few drops of “LOCTITE 270” on the thread of the
screws (2).
Tighten the screws (2) to the prescribed torque.
AXLES IN TANDEM MERITOR RP 160 E (R 2478) (INTERMEDIATE)
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