Iveco Stralis AT/AD. Manual — part 95
116
GEARBOX EuroTronic 12 AS 2301 D.D./O.D.
S
TRALIS
AT/AD
Base - January 2003
GEARBOXES
EuroTronic Automated
12 AS 2301 D.D.
12 AS 2301 O.D.
Type
Mechanical
Torque activated
Nm
1900
2500
Forward gears
Reverse gears
12
2
Type of running control
electronically-operated semi-automatic
Rear power takeoff
optional
Gear engagement:
E.R.U.* and splitter engagement
by front engagement sleeves
free ring synchroniser
Gears
constantly engaged straight toothed
Gear ratios
1
a
2
a
3
a
4
a
5
a
6
a
7
a
8
a
9
a
10
a
11
a
12
a
1
a
RM
2
a
RM
15.85
12.32
9.56
7.43
5.87
4.56
3.47
2.70
2.09
1.62
1.28
1.00
14.68
11.41
12.33
9.59
7.44
5.78
4.57
3.55
2.70
2.10
1.63
1.27
1.00
0.78
11.41
8.88
ERG* = Epicyclic Reduction Gearing
D.D.
= Direct drive
O.D. = Over Drive (Multiplied)
GEARBOX EuroTronic 12 AS 2301 D.D./O.D.
117
S
TRALIS
AT/AD
SPECIFICATIONS AND DATA
EuroTronic Automated
12 AS 2301 D.D./O.D.
Bearings
-
drive input shaft
-
ERG* shaft
-
transmission shafts
with balls
with cylindrical rollers
with tapered rollers
Bearing end float:
-
drive input shaft
-
ERG* planet shaft
-
transmission shafts
0
÷ 0.1 mm
0
÷ 0.1 mm
- 0.05
÷ + 0.05 mm
End float:
-
main shaft
-
drive input shaft split ring
0.2 mm
0
÷ 0.1 mm
Temperature for fitting bearings or bearing
seats on the boxes
120
°C
Forced lubrication with positive displace-
ment pump flow rate (with 12
th
speed en-
gaged and oil at a temperature of 80ºC)
pressure with 12
th
speed engaged at 2400
rpm and oil at a temperature of:
40ºC
80ºC
50 dm
3
/min
1.7 bar
1.2 bar
Oil type
litres
kg
Tutela Truck Fe-Gear
Tutela ZC 90
12
11
ERG* = Epicyclic Reduction Gearing
D.D.
= Direct drive
O.D. = Over Drive (Multiplied)
Figure 2
LONGITUDINAL CROSS-SECTION OF EUROTRONIC 12AS 2301 GEARBOX
001396t
118
GEARBOX EuroTronic 12 AS 2301 D.D./O.D.
S
TRALIS
AT/AD
Base - January 2003
GEARBOX EuroTronic 12 AS 2301 D.D./O.D.
119
S
TRALIS
AT/AD
TIGHTENING TORQUES
DESCRIPTION
TORQUE
DESCRIPTION
Nm
kgm
1
Screws fixing gearbox actuator
23
2.3
2
Screw fixing oil pump
10
1
3
Screws fixing drive input shaft cover
23
2.3
4
Screw fixing clutch uncoupling lever control pin:
- M 12 8.8
- M 12 10.9
79
115
7.9
11.5
5
Screws fixing cover (spread LOCTITE 241 on the thread)
79
7.9
6
Screws fixing clutch actuator
23
2.3
7
Screw cap to discharge air from clutch actuator
22
2.2
8
Screws fixing rear box to middle box
46
4.6
9
Screws fixing flange retaining plate
120
12
10
Screws fixing rear cover
5
4.6
11
Speed sensor
45
4.5
12
Screws fixing middle box to front box
50
5
Pin on rod (spread LOCTITE 262 on the thread)
23
2.3
Oil vapour vent
10
1
Screw plug M 10x1 on rear box
15
1.5
Screw plug M 24x1 on rear box
60
6
Screw M12 fixing power take-off bay cover
79
7.9
Screw plug M 24x1.5 on middle box
60
6
Screw fixing plates retaining fork joint pins on rear box
23
2.3
70824
Figure 3
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