Iveco Stralis AT/AD. Manual — part 89
Figure 119
61211
Position a new gasket on the front cover. Mount the oil pump
(2) together with the adjustment ring (2, Figure 118).
Screw down the nuts (1) and tighten them to the required
torque.
Figure 120
61212
To replace the seals (1) and bushings (2), use general tools
to remove - fit them.
To fit the seal (5) use the keying device 99370420 (4) and
grip 99370006 (3).
530511
Drive input shaft cover
62213
Figure 121
Determine the thickness S of the drive input shaft bearing
adjustment ring as follows:
- Turn the drive input shaft and check that the outer ring
(1) rests without any clearance or pre-load on the rollers
of the internal ring of the bearing.
- Measure the protrusion of the bearing (1) from the plane
of the front cover (2), distance A.
Figure 122
61214
- Measure the depth B of the seat of the bearing (1,
Figure 121) on the cover (2).
The thickness S of the adjustment ring (1) is determined by
the following equation:
S= [ B - (A - C)] - D
Where:
-
A - B, measurements taken;
-
C, thickness of gasket;
-
D, end float of 0 - 0.1 mm.
92
GEARBOX ZF 16 S 151 D.D. - 181 D.D./O.D. - 221 D.D.
S
TRALIS
AT/AD
Base - January 2003
Figure 123
61215
Position a new gasket on the front cover (1). Mount the
cover (1) together with the adjustment ring (1, Figure 48).
Screw down the nuts (2) and tighten them to the required
torque.
Figure 124
71127
Turn over the gearbox.
Mount the tube (3) in the main shaft.
Mount the spacer (5) on the main shaft (4), position the seal
(6) in the seat of the splitter driving cylinder.
!
Position the cut of the ring (7) by the hole (
→).
Mount the seals (8 and 9) on the cylinder (6) and lubricate
them.
Fit the cylinder (6) in the gearbox.
Position the tool 99370450 (1) on the gearbox (3) so as to
keep the cylinder (6) in the seat. Supply the splitter control
valve (2, Figure 82) with compressed air (max. 6.8 bars) and
listen to check the internal piston works and there are no air
leaks.
Take off the tool 99370450 (1).
Refit the epicyclic reduction gear unit box as described under
the relevant heading.
Replenish the gearbox with lubricating oil of the required
grade and quantity.
GEARBOX ZF 16 S 151 D.D. - 181 D.D./O.D. - 221 D.D.
93
S
TRALIS
AT/AD
71108
Figure 125
The splitter (slow speeds - fast speeds) and epicyclic reduction
gear unit are air operated and controlled with the speed
control lever.
The selector (1) pre-selects the L range (slow) and V range
(fast) via the double control valve (6). They are inserted via
the inhibitor valve (2) when the clutch pedal is pressed.
The epicyclic unit engages and disengages automatically when
passing from the 1st H to the 2nd H and vice versa.
When the gearbox is in neutral, the driving cylinder (7) is
operated by the pressurized air via the control valve (10).
The vehicle’s pneumatic system supplies the services
reservoir (4) and the distributor (11) through the pressure
reduction unit (3).
Through the piping (13), the distributor (11) supplies the
servo-clutch (5) that, if operated with the clutch pedal,
supplies the servoshift (12) through the piping (14).
A switch (9) on the gearbox control turns on the reversing
light when reverse gear is engaged.
The switch (8) signalling when the gearbox is in neutral is on
the cover of the gear control.
Another switch on the ERG driving cylinder (7) turns on the
indicator light in the cab (with the symbol of the tortoise)
when the epicyclic reduction gear is engaged.
DIAGRAM OF PNEUMATIC CONTROL OF GEARBOX WITH SERVOSHIFT
1. Splitter control selector - 2. Inhibitor valve - 3. Pressure reduction unit - 4. Services reservoir - 5. Servo-clutch - 6. Double
control valve - 7. ERG driving cylinder - 8. Switch signalling gearbox in neutral - 10. Control valve - 11. Distributor -
12. Servoshift - 13. Piping - 14. Piping
94
GEARBOX ZF 16 S 151 D.D. - 181 D.D./O.D. - 221 D.D.
S
TRALIS
AT/AD
Base - January 2003
!
This sub-section gives the main topics that differ
from the ones covered for the similar types of
gearbox without the Intarder.
GEARBOX ZF 16 S 151 D.D. - 181 D.D. - 221 D.D. WITH INTARDER
95
S
TRALIS
AT/AD
CAMBI DI VELOCITÀ ZF 16 151 / 181 / 221 O.D. CON INTARDER
ZF gearboxes
with INTARDER hydraulic retarder,
types:
16 S 151 D.D.
16 S 181 D.D.
16 S 221 D.D.
Page
SPECIFICATIONS AND DATA
97
. . . . . . . . . . . . .
TOOLS
98
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Removing the hydraulic retarder from the
gearbox on the stand
105
. . . . . . . . . . . . . . . . . . .
- Refitting the hydraulic retarder
105
. . . . . . . . . . . .
- Removing the epicyclic reduction gear unit
(ERG)
106
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Removing the epicyclic reduction gear unit
(ERG) rear box
106
. . . . . . . . . . . . . . . . . . . . . . . .
- Component parts of the epicyclic reduction
gear unit
109
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Fitting the epicyclic reduction gear unit (ERG)
110
- Refitting the epicyclic reduction gear unit
(ERG) rear box
112
. . . . . . . . . . . . . . . . . . . . . . . .
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