Iveco Stralis AT/AD. Manual — part 126
41025
41026
41027
Figure 14
Figure 15
Figure 16
Put the assembly in a vice, unscrew the nut (3), extract the
flange (2), unscrew the screws and remove the cover (1).
Unscrew the screws and take off the cover (2); recover the
adjustment ring.
Take off the split ring and extract the fitting (1); unscrew the
electric transmitter.
Apply the extractor 99341002 (2) with the grips 99341016
(1) and extract the toothed output shaft (3).
Take out the gear (4).
41028
60241
41029
Figure 17
Figure 18
Figure 19
Drive out the spring pin (1), take out the shaft (2) and the drive
fork (3).
Put the toothed output shaft in a vice. Using the extractor
993441002 (1), grips 99341009 (2) and clamp 99341015 (3),
extract the tapered roller bearing (4).
Extract the shaft together with the gear (3) from the oil pump
(4). Unscrew the screws (1) securing the oil pump (4) and de-
tach it from the cover (2).
534532
Removing oil pump
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71567
71568
71569
Figure 20
Figure 21
Figure 22
Cleaning and checking parts
After completing removal, immerse all the parts except for the
bearings in a wash tank containing a solution of water and soda
heated to a temperature of 80 to 85ºC until the lubricant resi-
dues have dissolved.
Using a wire brush and scraper, get rid of any deposits on the
parts, remains of gaskets and traces of Loctite and sealant from
the mating surfaces, taking care not to damage them.
Wash again and dry the parts with compressed air.
Using a benchtop electric cleaning machine with wire brushes,
remove any remains of Loctite and sealant from the threads
of the screws.
To clean the bearings thoroughly, you need to put them in a
bath of kerosene and, with the aid of a brush, eliminate all
traces of lubricant.
Dry them with compressed air, bearing in mind that the jet of
air must not cause the bearings to turn.
Then lubricate the bearings with oil of the same type used for
the gears.
Keeping the bearings pressed down by hand while turning
them slightly in both directions you should feel no roughness
nor hear any noise as they move.
Carefully check that the rollers and cages, as well as the exter-
nal and internal rolling races, are not worn.
Check all the parts to decide whether to reuse them or re-
place them.
Take out the fixing screws (4) and remove the cover (3) from
the pump casing (1).
Extract the gear shafts (5 and 6) from the pump casing (1).
Using a suitable extractor, remove the roller bearing (2) from
the pump casing (1).
Key the roller bearing (2) onto the driven gear shaft (1).
Apply a press on the gear (1) so as to fit the roller bearing (2)
in the pump casing (3).
Mount the gear (6) in the pump casing so that the end of the
shaft goes into the corresponding compartment of the shaft
(2) of the driven gear (1) and the gear (7).
!
The gears need to be lubricated beforehand.
Put the cover (4) on the pump casing (3). Screw down the fix-
ing screws (5) and tighten them to the required torque.
!
When handling the oil pump, take care the shaft (2)
of the driven gear does not come out of the gear shaft
(6).
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Fitting the oil pump
41036
41037
41028
Figure 23
Figure 24
Using a feeler gauge (2), measure the gap (1) between the
bearing and the seat of the split ring. Then select the split ring
that gives the less clearance possible.
Put the box in a vice.
Fit on the fork (3), key on the shaft (2) and drive on the spring
pin (1).
Heat the internal ring of the bearing (2) to approx. 80ºC and
key it on the toothed shaft (1).
Fitting drive assembly
Figure 25
41035
Figure 26
Heat the internal ring of the bearing (2) to approx. 80ºC and
key it on the shaft (1).
Leave it to cool to pass on to the next step.
Fitting bearing for shaft with gear wheel
60241
Figure 27
Put the oil pump (4) on the bottom cover (2) and secure it
there with the screws (1), tightening them to the required tor-
que.
!
When handling bottom cover (2), take care the shaft
of the driven gear (3) does not come out of the oil
pump gear shaft.
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41038
41039
41040
Figure 28
Figure 30
Figure 29
Put the gear (3) together with the sliding sleeve (2) in the box;
insert the toothed shaft (1).
SECTION OF DRIVE ASSEMBLY
Fit on the external ring (1) for the bearing.
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