Iveco Daily Euro 4. Manual — part 124
YES
YES
3
NOISE AT RELEASE
Improper fitting clearance between pinion and ring bevel
gear.
Remove the gear housing inspection cover and adjust
clearance between pinion and ring bevel gear.
NO
Insufficient lubrication.
Check that there are no leaks from gaskets or the rear
axle casing and top up oil to correct level.
4
NOISE DURING ACCELERATION
YES
Bad adjustment or wear on differential gears or bearings.
Locate the trouble and overhaul the unit.
YES
NO
Gear housing bearings badly set or deteriorated.
Overhaul the unit.
YES
Bad tooth contact between pinion and ring bevel gear.
Adjust the contact.
5
YES
Improper clearance between planetary gears and crown
wheels.
Overhaul or replace the unit.
CORNERING NOISE
4
REAR AXLES
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REAR AXLE NDA RS
5
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Page
DESCRIPTION
7
. . . . . . . . . . . . . . . . . . . . . . . . . .
SPECIFICATIONS AND DATA
8
. . . . . . . . . . . . .
TIGHTENING TORQUES
10
. . . . . . . . . . . . . . . . .
TOOLS
13
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REAR AXLE NDA - RS REMOVAL - REFITTING
17
- Removal
17
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Refitting
17
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OVERHAULING THE REAR AXLE ASSEMBLY
19
.
- Air breather disassembly - assembly
19
. . . . . . . .
- Wheel hub overhaul
19
. . . . . . . . . . . . . . . . . . . .
- Disassembly
19
. . . . . . . . . . . . . . . . . . . . . . . . . . .
- Assembly
21
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REPAIRING THE DIFFERENTIAL
22
. . . . . . . . . . . .
- Disassembling the differential unit
22
. . . . . . . . . .
- Gear housing removal
23
. . . . . . . . . . . . . . . . . . .
- Dismounting bevel pinion
24
. . . . . . . . . . . . . . . .
- Checking the parts comprising the differential
25
- Assembly of gear housing
26
. . . . . . . . . . . . . . . .
- Assembling the bevel pinion assembly
27
. . . . . .
- Assembly of differential unit
30
. . . . . . . . . . . . . .
6
REAR AXLE NDA RS
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AILY
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107834
Figure 1
DESCRIPTION
The rear axle is the load-bearing type with a single reduction
using a hypoid crown wheel and pinion.
The axle housing is made of pressed sheet steel with hot
pressed arms.
The bevel pinion is supported by two pre-lapped tapered
roller bearings to hold the bearing pre-load better.
The bearings are factory lubricated by the manufacturer with
rustproof protective oil.
The rolling torque of the bearings of the bevel pinion is
adjusted by changing the thickness of the adjustment ring
between the two tapered roller bearings.
In addition, it is possible to adjust the position of the bevel
pinion with respect to the ring bevel gear by changing the
thickness of the ring between the axle housing and the bevel
pinion rear bearing external ring.
The gear housing is supported by two tapered roller bearings,
also pre-lapped and lubricated with rustproof protective oil.
The adjustment of bearing rolling torque is through adjusting
rings put in between box and stop rings.
The clearance between pinion and crown wheel is adjusted
by changing the thickness and/or position of the adjustment
rings, though the total thickness must be the same as that of
the adjustment rings removed.
Differential wheelwork assembly is made up of two planetary
and two crown wheel gears.
The drive shafts are supported inside the arms of the axle
housing by UNIT BEARINGS lubricated for life, which require
no adjustment.
The brakes are disc brakes with floating brake calipers.
The disc brakes are splined onto the end of the drive shafts
and secured with pins that also serve as centring for the
wheel rims.
The brake calipers are secured with flanges welded onto the
end of the arms of the axle housing.
The brake calipers are equipped with the parking brake
device.
REAR AXLE NDA RS
7
D
AILY
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