Iveco EuroCargo (12 to 26 t). Manual — part 59
E
URO
C
ARGO
T
ECTOR
12-26 t
GEARBOX 2870.9
79
Base - February 2003
Gearbox
2870.9
Page
DESCRIPTION
81
. . . . . . . . . . . . . . . . . . . . . . . . . .
SPECIFICATIONS AND DATA
82
. . . . . . . . . . . . .
TIGHTENING TORQUES
85
. . . . . . . . . . . . . . . . .
TOOLS
86
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GEARBOX 2870.9
DISENGAGEMENT/RE-ENGAGEMENT
91
. . . .
-
Disengagement
91
. . . . . . . . . . . . . . . . . . . . . . . .
-
Re-engagement
91
. . . . . . . . . . . . . . . . . . . . . . . .
GEARBOX DISASSEMBLY
93
. . . . . . . . . . . . . . . . .
-
Checks
97
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GEARBOX ASSEMBLY
98
. . . . . . . . . . . . . . . . . . . .
-
Bearings pre-load adjustment for secondary shaft
98
-
Idle-Reverse Gear switch adjustment
104
. . . . . . . .
PRIMARY SHAFT DISASSEMBLY
105
. . . . . . . . . . . .
PRIMARY SHAFT ASSEMBLY
107
. . . . . . . . . . . . . . .
MOTION INLET SHAFT DISASSEMBLY
107
. . . . . .
MOTION INLET SHAFT ASSEMBLY
108
. . . . . . . . .
-
Motion inlet shaft bearing adjustment
108
. . . . . . .
SECONDARY SHAFT DISASSEMBLY
108
. . . . . . . .
SECONDARY SHAFT ASSEMBLY
108
. . . . . . . . . . .
INTERNAL DRIVE SHAFT DISASSEMBLY
108
. . . . .
INTERNAL DRIVE SHAFT ASSEMBLY
109
. . . . . . . .
EXTERNAL DRIVE CASE DISASSEMBLY
109
. . . . . .
EXTERNAL DRIVE CASE ASSEMBLY
110
. . . . . . . . .
EPICYCLIC REDUCTION GEAR ASSEMBLY
113
. . .
-
Operating diagrams about pneumatic epicyclic
reduction gear drive circuit
113
. . . . . . . . . . . . . . .
DISASSEMBLY
115
. . . . . . . . . . . . . . . . . . . . . . . . . . .
-
Checks
117
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ASSEMBLY
118
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
E
URO
C
ARGO
T
ECTOR
12-26 t
GEARBOX 2870.9
81
Base - February 2003
DESCRIPTION
The 2870.9 gearshift is of the mechanic type, with nine speeds and engagement of the 1
st
, 4
th
, 5
th
, 8
th
and 9
th
speeds by means of
free-ring synchronizing rings, whereas the 2
nd
, 3
rd
, 6
th
and 7
th
speeds are engaged by means of a double-cone synchronizing gear.
The reverse gear engagement is with quick-engagement sliding sleeve.
It is composed of a front section, comprising five ratios and reverse gear, and of a rear section comprising two ratios obtained through
epicyclic reduction gear.
The gear switch is carried out mechanically through double-”H” control; the epicyclic reduction gear engagement is carried out
mechanically with pneumatic switching.
The gearbox is equipped with an oil pump for its lubrication.
Figure 1
2870.9 GEARBOX LONGITUDINAL SECTION AND REVERSE GEAR SHAFT SECTION
78684
SEC A-A
E
URO
C
ARGO
T
ECTOR
12-26 t
82
GEARBOX 2870.9
Base - February 2003
GEARBOX
2870.9
Type
Mechanical
Gears
9 forward gears and reverse gear
Gears engagement
control
Mechanical
Power takeoff
Upon request
Gears engagement:
1
st
2
nd
⇒
3
rd
4
th
⇒
5
th
Free-ring synchronizer
Double-cone synchronizer
Free-ring synchronizer
4
th
⇒
5
th
6
th
⇒
7
th
h
h
Free-ring synchronizer
Double-cone synchronizer
8
th
⇒
9
th
Reverse gear
Free-ring synchronizer
Quick-connection type
eve se gea
Gears anti-
disengagement
Quick connection type
Sliding sleeve holding through rollers and springs.
Gears
With helical teeth
Gear ratio
First
1 : 13.200
Second
1 : 9.036
Third
1 : 6.473
Fourth
1 : 4.691
Fifth
1 : 3.548
Sixth
1 : 2.547
Seventh
1 : 1.824
Eighth
1 : 1.322
Ninth
1 : 1.000
Reverse gear
1 : 11.650
E
URO
C
ARGO
T
ECTOR
12-26 t
GEARBOX 2870.9
83
Base - February 2003
Oil type
Amount
TUTELA ZC 90
4.5 Kg. (5lt)
Fixed hubs assem-
bly temperature
100
o
C
÷ 130
o
C
Secondary shaft
bearings
With tapered rollers
Secondary shaft
bearings
pre-loading
adjustment
Through rings
Secondary shaft
pre-loading
adjustment rings
thickness
2.5 - 2.7 - 2.8 - 2.9 - 3.1 - 3.2
3.3 - 3.4 - 3.5 - 3.6 - 3.7 - 3.8
Supplied in a kit
Secondary shaft
bearings assembly
temperature
85
o
C
Motion entry shaft
bearings adjusting
rings thicknesses
2.40 - 2.45 - 2.50 - 2.55 - 2.60 -
2.65 - 2.70 - 2.75 - 2.80
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