Iveco Stralis AT/AD. Manual — part 94
61224
Figure 31
Put a new gasket on the gearbox (2) and refit the ERG rear
box (1).
Fit the two centring pins (
→) and tighten the fixing screws (6)
to the required torque.
Mount the cover (3) with a new gasket and tighten the screws
(5) to the required torque.
Screw down the plug (4).
43800
Figure 32
Change the seals (4 and 6), spacer ring (5) of the piston (3)
and lubricate them.
Fit the piston (3) on the rod (1) and tighten the nut (2) to the
required torque.
43815
Figure 33
Insert the push rod (2) into the gearbox and fit the switch (3)
with the washer. Mount the retaining push rod (6).
Lubricate the seal (5), gasket (4) and mount them on the box
(1).
Lubricate the inside of the cylinder (7), fit it on the box (1) and
tighten the fixing screws (6) to the required torque.
Connect the pipes (2 and 4) to the cylinder (7), screwing down
the fittings (3 and 5) with new washers and tightening them
to the required torque.
Refit the hydraulic retarder and replenish the assembly with
the required quantity and grade of oil.
43802
Figure 34
Refitting the epicyclic reduction gear unit
(ERG) rear box
112
GEARBOX ZF 16 S 151 D.D. - 181 D.D. - 221 D.D. WITH INTARDER
S
TRALIS
AT/AD
Base - January 2003
GEARBOX EuroTronic 12 AS 2301 D.D./O.D.
113
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AT/AD
Gearbox
EuroTronic 12 AS 2301 D.D./O.D.
Page
DESCRIPTION
115
. . . . . . . . . . . . . . . . . . . . . . . . . .
SPECIFICATIONS AND DATA
116
. . . . . . . . . . . . .
TIGHTENING TORQUES
119
. . . . . . . . . . . . . . . . .
TOOLS
120
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OVERHAULING THE GEARBOX
125
. . . . . . . . . . .
- Checks
125
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Gearbox actuator
125
. . . . . . . . . . . . . . . . . . . . . .
- Removal
125
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Refitting
126
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Removing the rear box
126
. . . . . . . . . . . . . . . . . .
- Removing the rear box
127
. . . . . . . . . . . . . . . . . .
- Removing the epicyclic reduction
gear train (E.R.G.)
128
. . . . . . . . . . . . . . . . . . . . . .
- Fitting the epicyclic reduction gear train (E.R.G.)
130
- Adjusting epicyclic reduction gear train bearing
end float
131
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Adjusting main shaft end float
132
. . . . . . . . . . . . .
- Synchronizing device assembly for engaging
normal or reduced gears
134
. . . . . . . . . . . . . . . . .
- Removal
134
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Fitting
134
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Removing the middle box
137
. . . . . . . . . . . . . . . .
- Removing the main shaft
139
. . . . . . . . . . . . . . . . .
- Removing the drive input shaft
141
. . . . . . . . . . . .
- Removing the splitter synchronizing device
142
. . .
- Fitting the splitter synchronizing device
143
. . . . . .
- Fitting the drive input shaft
144
. . . . . . . . . . . . . . .
114
GEARBOX EuroTronic 12 AS 2301 D.D./O.D.
S
TRALIS
AT/AD
Base - January 2003
- Fitting the main shaft
144
. . . . . . . . . . . . . . . . . . . .
- Splitter control fork
147
. . . . . . . . . . . . . . . . . . . .
- Disassembly - Assembly
147
. . . . . . . . . . . . . . . . .
- Gear control forks
147
. . . . . . . . . . . . . . . . . . . . .
- Removal
147
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Fitting
148
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Transmission shafts
149
. . . . . . . . . . . . . . . . . . . . .
- Disassembly - Assembly
149
. . . . . . . . . . . . . . . . .
- Fitting the middle box
149
. . . . . . . . . . . . . . . . . . .
- Fitting the front box
152
. . . . . . . . . . . . . . . . . . . .
- Front cover
154
. . . . . . . . . . . . . . . . . . . . . . . . . . .
- Removal
154
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Fitting the front cover
154
. . . . . . . . . . . . . . . . . . .
- Adjusting drive input shaft bearing end float
154
. .
- Adjusting transmission shaft bearing end float
155
- Clutch release lever
157
. . . . . . . . . . . . . . . . . . . .
DESCRIPTION
The EuroTronic gearbox 12 AS 2301 D.D./O.D. is mechanical with electro-pneumatic control.
The driver can choose whether to program gear selection/engagement manually or automatically. The shafts and gears have
helical toothing that reduces operating noise.
The main shaft gear coupling is obtained with sleeves with front toothing.
The splitter and epicyclic reduction gear unit engagement is synchronized.
The speeds are selected with finely staggered ratios and can be engaged in succession with the coupling of the epicyclic reduction
gear unit ”ERG” and the ”Splitter” slow or fast speed unit.
On engaging the ”ERG”, the speeds of the main shaft are doubled. The ratios obtained in this way are further doubled with the
engagement of the ”Splitter”. Each single ratio is thus divided into a fast or slow ratio.
D.D. = Direct drive
O.D. = Over Drive (Multiplied)
Figure 1
000418t
GEARBOX EuroTronic 12 AS 2301 D.D./O.D.
115
S
TRALIS
AT/AD
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