Iveco EuroCargo (12 to 26 t). Manual — part 191
Assemble sealing gaskets (2) on adjustment pins assemblies
(1).
Grease pin (1) threading.
Completely screw adjustment bushes (3) and scrupulously
grease these latter ones on external diameter.
Grease thrust pins (4) internal diameter.
38364
38365
38366
38367
Figure 169
Figure 170
Figure 171
Figure 172
Assemble seaking gaskets (1) on thrust pins (3); make sure of
the correct gaskets profile insertion in thrust pins groove (2).
Grease pins (3) on sliding surface and on wedge (4) sliding
chute.
Insert thrust pin (1) into brake body (3) seat so that the slot
is facing the drive pin (2).
Grease and insert complete guide pin (2) into brake body seat
(3); make sure that washer (5) is inserted and screw some
turns.
Insert automatic adjustment unit (1) into adjustment pin, fit
sealing gasket (2) metal ring on brake body (4).
Lock guide pin (3) at the required torque.
!
During brakes maintenance interventions, replace
sealing gaskets of adjustment and thrust pins.
For lubricating the components, use Rockwell RBSK
0253 grease.
!
Guide pin (2) must be assembled so that prong (4)
slides into suitable brake body (3) hole slot.
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38368
38369
38370
17268
35717
Figure 173
Figure 174
Figure 175
Figure 176
Figure 177
By using keyer 99373002 (1), drive sealing gasket metal ring
onto brake body (2).
Insert thrust pin (4) into brake body (1) so that the notch is
facing the guide pin (2) hole.
Grease and screw guide pin (2) at the required torque.
By using keyer 99373002 (2) drive the metal ring (1) of sealing
gasket on brake body.
Proceed as described for assembling the other jaws opening
control units.
Abundantly grease wedge control units (1) and insert them
into their own seat into brake body (2) so that wedge unit
rollers rest on related thrust pins sliding races.
Manually screw ring nut (2) on barrel (1) till its end of stroke.
Apply non-hardenable sealing paste, LOCTITE 573 type, on
first barrel threads.
!
Before proceeding with assembling thrust pins (4),
check the mark punched on them. Letter ”R” (right)
or ”L” (left) shows that the brake belongs to right or
left wheel.
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38705
38374
38373
38375
17301
Figure 178
Figure 179
Figure 180
Figure 181
Figure 182
Completely screw brake cylinders (2) into their own seat so
that supply fittings are in their original position and exhaust
hole is open and facing downwards.
Connect brake cylinders supply pipings (1).
Completely screw adjustment unit (2), then unscrew by one
revolution in order to give an initial adjustment for automatic
recovery; place them so that notches (1) allow inserting the
jaws.
Assemble jaws (1) into their suitable seat so that the punched
arrow (2) is oriented along the forward-running drum rotation
direction.
Hook jaws return springs (3 and 5) using tool 99372217 (4).
Operate on adjustment units (1 and 2) till a dimension (A) is
obtained, measured with a gauge, that is by 2 mm lower than
the one detected on the used drum.
Lubricate bearings seat on barrel (3) and wheel hub sealing ring
with TUTELA W 140/MDA oil.
By using hydraulic trolley 99321024 (1), place complete wheel
(2) so that internal hub diameter is perfectly centred on rear
axle case barrel (3). Place tapered roller bearing (4) into wheel
hub. Insert complete wheel till the end of its seat, taking care
of aligning wheel hub with barrel (3) to avoid damaging sealing
gaskets profiles.
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35768
35770
35771
35772
Figure 183
Figure 184
Figure 185
Figure 186
Figure 187
Figure 188
Screw locking ring nut and tighten it through wrench
99355167 (1) and dynamometric wrench (2) at the required
torque.
35768
Screw locking ring nut and tighten it through wrench 99355167
(1) and dynamometric wrench (2), tighten adjustment nut at
a torque of 98 Nm (10 kgm); at the same time, rotate hub along
the two directions.
Then loosen the nut down to a zero torque.
Further unscrew the nut till an axial clearance is obtained that
is included between 0.20 and 0.30 mm, corresponding to an
angular movement of about 1/6 of a revolution.
Assemble the safety ring (2): if the nut (1) stop dowel does not
coincide with one of the safety ring (2) holes, change nut (1)
position taking also into account the clearance obtained in the
previous operation.
35769
Place comparator (1) with magnetic base on hub (3). Abut rod
onto barrel (2) and check that maximum axial hub clearance is
0.05 mm.
Assemble half-shaft (1), insert securing screws (2) and tighten
them at the required torque.
Butter with hermetic type ”B” the contact surface (1) between
half-shaft and wheel hub.
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