DAF Rear Axle Service Manual
8
LF45/55 series
STRUCTURE
TECHNICAL DATA
0
DIAGNOSTICS
1
SINGLE REAR AXLE 5.10
2
SINGLE REAR AXLE 5.12
3
SINGLE REAR AXLE 5.14
4
SINGLE REAR AXLE 8.20
5
SINGLE REAR AXLE 10.20
SINGLE REAR AXLE 10.26
SINGLE REAR AXLE 11.26
6
7
8
ᓻ 200313
8
TECHNICAL DATA
LF45/55 series Contents
CONTENTS
Page Date
1. SINGLE REAR AXLE 5.10 1-1 200313.............................................. ....
1.1 General 1-1 200313......................................................... ....
1.2 Tightening torques 1-1 200313................................................ ....
1.3 Filling capacities 1-2 200313.................................................. ....
2. SINGLE REAR AXLE 5.12 2-1 200313.............................................. ....
2.1 General 2-1 200313......................................................... ....
2.2 Tightening torques 2-1 200313................................................ ....
2.3 Filling capacities 2-2 200313.................................................. ....
3. SINGLE REAR AXLE 5.14 3-1 200313.............................................. ....
3.1 General 3-1 200313......................................................... ....
3.2 Tightening torques 3-1 200313................................................ ....
3.3 Filling capacities 3-2 200313.................................................. ....
4. SINGLE REAR AXLE 8.20 4-1 200313.............................................. ....
4.1 General 4-1 200313......................................................... ....
4.2 Tightening torques 4-1 200313................................................ ....
4.3 Filling capacities 4-2 200313.................................................. ....
5. SINGLE REAR AXLE 10.20 5-1 200313............................................. ....
5.1 General 5-1 200313......................................................... ....
5.2 Tightening torques 5-1 200313................................................ ....
5.3 Filling capacities 5-2 200313.................................................. ....
6. SINGLE REAR AXLE 10.26 6-1 200313............................................. ....
6.1 General 6-1 200313......................................................... ....
6.2 Tightening torques 6-1 200313................................................ ....
6.3 Filling capacities 6-2 200313.................................................. ....
0
7. SINGLE REAR AXLE 11.26 7-1 200313............................................. ....
7.1 General 7-1 200313......................................................... ....
7.2 Tightening torques 7-1 200313................................................ ....
7.3 Filling capacities 7-2 200313.................................................. ....
ᓻ 200313
1
0
8TECHNICAL DATA
Contents LF45/55 series
2
ᓻ 200313
8
TECHNICAL DATA
LF45/55 series Single rear axle 5.10
1. SINGLE REAR AXLE 5.10
1.1 GENERAL
Wheel speed sensor
Anti-corrosion agent Molykote P37
Differential attachment stud bolts
Differential attachment stud bolt locking
compound
Pinion gear splines
Sealant Loctite 572
Differential attachment
Sealant between differential and axle housing Loctite 518
Stub axle attachment
Sealant for stub axle flange mating surface Loctite 518
Wheel bearing play
Wheel bearing axial play 0.05 - 0.20 mm
Loctite 2701
1.2 TIGHTENING TORQUES
0
The tightening torques stated in this paragraph
are different from the standard tightening
torques stated in the overview of the standard
tightening torques. The other threaded
connections which are not stated must therefore
be tightened to the tightening torque stated in
the overview of standard tightening torques.
When attachment bolts and nuts are to be
replaced, it is important that these bolts and nuts
are of exactly the same length and property
class as the ones removed - unless stated
otherwise -.
ᓻ 200313
1-1
TECHNICAL DATA
8
Single rear axle 5.10 LF45/55 series
0
Differential
Attachment bolts/nuts 90 Nm
Drainplug 54Nm
Wheel hub
Stub axle attachment nuts 82 Nm
Wheel-speed sensor holder attachment bolts 8 Nm
Lock nut 135 Nm
Level check/filler plug 27 Nm
Notes:
1. Only use a new nut
(1)
1.3 FILLING CAPACITIES
Differential
Filling capacity approx. 4.0 litres
Hub
Filling capacity 0.25 litres
1-2
ᓻ 200313
8
TECHNICAL DATA
LF45/55 series Single rear axle 5.12
2. SINGLE REAR AXLE 5.12
2.1 GENERAL
Wheel speed sensor
Anti-corrosion agent Molykote P37
Crown wheel guide bolt
Sealant Loctite 572
Differential attachment stud bolts
Differential attachment stud bolt locking
compound
Differential attachment
Sealant between differential and axle housing Loctite 518
Stub axle attachment
Sealant for stub axle flange mating surface Loctite 518
Wheel bearing play
Wheel bearing axial play 0.05 - 0.20 mm
Loctite 2701
2.2 TIGHTENING TORQUES
The tightening torques stated in this paragraph
are different from the standard tightening
torques stated in the overview of the standard
tightening torques. The other threaded
connections which are not stated must therefore
be tightened to the tightening torque stated in
the overview of standard tightening torques.
0
When attachment bolts and nuts are to be
replaced, it is important that these bolts and nuts
are of exactly the same length and property
class as the ones removed - unless stated
otherwise -.
ᓻ 200313
2-1
TECHNICAL DATA
8
Single rear axle 5.12 LF45/55 series
0
Differential
Attachment bolts/nuts 80 Nm
Drive flange attachment nut (self-locking) 675 Nm
Lock nut for crown wheel guide bolt 120 Nm
Drainplug 54Nm
Wheel hub
Stub axle attachment nuts 82 Nm
Wheel-speed sensor holder attachment bolts 8 Nm
Lock nut 135 Nm
Level check/filler plug 27 Nm
Notes:
1. Bolts to be treated with Loctite 572
2. Only use a new nut
(1)
(2)
2.3 FILLING CAPACITIES
Differential
Filling capacity approx. 4.0 litres
Hub
Filling capacity 0.25 litres
2-2
ᓻ 200313
8
TECHNICAL DATA
LF45/55 series Single rear axle 5.14
3. SINGLE REAR AXLE 5.14
3.1 GENERAL
Wheel speed sensor
Anti-corrosion agent Molykote P37
Differential-gear lock stud bolts
Differential-gear lock stud bolt locking
compound
Differential attachment stud bolts
Differential attachment stud bolt locking
compound
Differential attachment
Sealant between differential and axle housing Loctite 518
Stub axle attachment
Sealant for stub axle flange mating surface Loctite 518
Wheel bearing play
Wheel bearing axial play 0.05 - 0.20 mm
Loctite 2701
Loctite 2701
3.2 TIGHTENING TORQUES
0
The tightening torques stated in this paragraph
are different from the standard tightening
torques stated in the overview of the standard
tightening torques. The other threaded
connections which are not stated must therefore
be tightened to the tightening torque stated in
the overview of standard tightening torques.
When attachment bolts and nuts are to be
replaced, it is important that these bolts and nuts
are of exactly the same length and property
class as the ones removed - unless stated
otherwise -.
ᓻ 200313
3-1
TECHNICAL DATA
8
Single rear axle 5.14 LF45/55 series
0
Differential
Differential lock cover attachment bolts 20 Nm
Attachment bolts and nuts 90 Nm
Drive flange attachment nut (self-locking) 675 Nm
Drainplug 54Nm
Wheel hub
Stub axle attachment nuts 82 Nm
Wheel-speed sensor holder attachment bolts 8 Nm
Lock nut 135 Nm
Level check/filler plug 27 Nm
Notes:
1. Bolts to be treated with Loctite 572
2. Only use a new nut
(1)
(1)
(2)
3.3 FILLING CAPACITIES
Differential
Filling capacity approx. 4.0 litres
Hub
Filling capacity 0.25 litres
3-2
ᓻ 200313
8
TECHNICAL DATA
LF45/55 series Single rear axle 8.20
4. SINGLE REAR AXLE 8.20
4.1 GENERAL
Wheel speed sensor
Anti-corrosion agent Molykote P37
Differential-gear lock stud bolts
Differential-gear lock stud bolt locking
compound
Differential attachment stud bolts
Differential attachment stud bolt locking
compound
Differential attachment
Sealant between differential and axle housing Loctite 518
Stub axle attachment
Sealant for stub axle flange mating surface Loctite 518
Wheel bearing play
Wheel bearing axial play 0.05 - 0.20 mm
Loctite 2701
Loctite 2701
4.2 TIGHTENING TORQUES
0
The tightening torques stated in this paragraph
are different from the standard tightening
torques stated in the overview of the standard
tightening torques. The other threaded
connections which are not stated must therefore
be tightened to the tightening torque stated in
the overview of standard tightening torques.
When attachment bolts and nuts are to be
replaced, it is important that these bolts and nuts
are of exactly the same length and property
class as the ones removed - unless stated
otherwise -.
ᓻ 200313
4-1
TECHNICAL DATA
8
Single rear axle 8.20 LF45/55 series
0
Differential
Drive flange attachment nut (self-locking) 675 Nm
Differential lock cover attachment bolts 20 Nm
Attachment bolts/nuts 225 Nm
Drainplug 54Nm
Wheel hub
Stub axle attachment nuts 82 Nm
Wheel-speed sensor holder attachment bolts 8 Nm
Lock nut 135 Nm
Level check/filler plug 27 Nm
Notes:
1. Only use a new nut
2. Bolts to be treated with Loctite 572
(1)
(2)
4.3 FILLING CAPACITIES
Differential
Filling capacity approx. 8.0 litres
Hub
Filling capacity 0.25 litres
4-2
ᓻ 200313
8
TECHNICAL DATA
LF45/55 series Single rear axle 10.20
5. SINGLE REAR AXLE 10.20
5.1 GENERAL
Wheel hub
Before installing the wheel hub, axle journal
to be treated with Gleitmo 805
Wheel speed sensor
Anti-corrosion agent Molykote P37
Differential-gear lock stud bolts
Differential-gear lock stud bolt locking
compound
Differential attachment stud bolts
Differential attachment stud bolt locking
compound
Differential attachment
Sealant between differential and axle housing Loctite 518
Stub axle attachment
Sealant for stub axle flange mating surface Loctite 518
Loctite 2701
Loctite 2701
0
5.2 TIGHTENING TORQUES
The tightening torques stated in this paragraph
are different from the standard tightening
torques stated in the overview of the standard
tightening torques. The other threaded
connections which are not stated must therefore
be tightened to the tightening torque stated in
the overview of standard tightening torques.
When attachment bolts and nuts are to be
replaced, it is important that these bolts and nuts
are of exactly the same length and property
class as the ones removed - unless stated
otherwise -.
ᓻ 200313
5-1
TECHNICAL DATA
8
Single rear axle 10.20 LF45/55 series
0
Differential
Drive flange attachment nut (self-locking) 675 Nm
Differential lock cover attachment bolts 20 Nm
Attachment bolts/nuts 225 Nm
Drainplug 54Nm
Wheel hub
st
-1
-2ndphase turn the hub 10 revolutions at a speed of
-3
-4
-5
Stub axle attachment bolts 260 Nm
Wheel-speed sensor holder attachment bolts 8 Nm
Notes:
1. Only use a new nut
2. Bolts to be treated with Loctite 572
phase 300 Nm
rd
phase 350 Nm
th
phase turn the hub 10 revolutions at a speed of
th
phase 1100 Nm
approx. 40 rpm
approx. 40 rpm
(1)
(2)
(1)
5.3 FILLING CAPACITIES
Differential
Filling capacity approx. 9.0 litres
5-2
ᓻ 200313
8
TECHNICAL DATA
LF45/55 series Single rear axle 10.26
6. SINGLE REAR AXLE 10.26
6.1 GENERAL
Wheel hub
Before installing the wheel hub, axle journal to
be treated with
Wheel speed sensor
Anti-corrosion agent Molykote P37
Differential-gear lock stud bolts
Differential-gear lock stud bolt locking
compound
Differential attachment stud bolts
Differential attachment stud bolt locking
compound
Differential attachment
Sealant between differential and axle housing Loctite 518
Stub axle attachment
Sealant for stub axle flange mating surface Loctite 518
Gleitmo 805
Loctite 2701
Loctite 2701
0
6.2 TIGHTENING TORQUES
The tightening torques stated in this paragraph
are different from the standard tightening
torques stated in the overview of the standard
tightening torques. The other threaded
connections which are not stated must therefore
be tightened to the tightening torque stated in
the overview of standard tightening torques.
When attachment bolts and nuts are to be
replaced, it is important that these bolts and nuts
are of exactly the same length and property
class as the ones removed - unless stated
otherwise.
ᓻ 200313
6-1
TECHNICAL DATA
8
Single rear axle 10.26 LF45/55 series
0
Differential
Drive flange attachment nut (self-locking) 1250 Nm
Differential lock cover attachment bolts 20 Nm
Attachment bolts/nuts 225 Nm
Drainplug 54Nm
Wheel hub
st
-1
-2ndphase turn the hub 10 revolutions at a speed of
-3
-4
-5
Stub axle attachment bolts 260 Nm
Wheel-speed sensor holder attachment bolts 8 Nm
Notes:
1. Only use a new nut
2. Bolts to be treated with Loctite 572
3. Secure with Loctite 262
phase 300 Nm
rd
phase 350 Nm
th
phase turn the hub 10 revolutions at a speed of
th
phase 1100 Nm
approx. 40 rpm
approx. 40 rpm
(1) / (3)
(2)
(1)
6.3 FILLING CAPACITIES
Differential
Filling capacity approx. 9.0 litres
6-2
ᓻ 200313
8
TECHNICAL DATA
LF45/55 series Single rear axle 11.26
7. SINGLE REAR AXLE 11.26
7.1 GENERAL
Wheel hub unit
Before installing the wheel hub unit, axle
journal to be treated with
Wheel speed sensor
Anti-corrosion agent Molykote P37
Differential-gear lock stud bolts
Differential-gear lock stud bolt locking
compound
Differential attachment stud bolts
Differential attachment stud bolt locking
compound
Differential attachment
Sealant between differential and axle housing Loctite 518
Stub axle attachment
Sealant for stub axle flange mating surface Loctite 518
Gleitmo 805
Loctite 2701
Loctite 2701
0
7.2 TIGHTENING TORQUES
The tightening torques stated in this paragraph
are different from the standard tightening
torques stated in the overview of the standard
tightening torques. The other threaded
connections which are not stated must therefore
be tightened to the tightening torque stated in
the overview of standard tightening torques.
When attachment bolts and nuts are to be
replaced, it is important that these bolts and nuts
are of exactly the same length and property
class as the ones removed - unless stated
otherwise.
ᓻ 200313
7-1
TECHNICAL DATA
8
Single rear axle 11.26 LF45/55 series
0
Differential
Drive flange attachment nut 1250 Nm
Differential-gear lock attachment bolts 20 Nm
Attachment bolts/nuts 225 Nm
Drainplug 54Nm
Wheel hub unit
st
-1
-2ndphase turn the hub 10 revolutions at a speed of
-3
-4
-5
Stub axle attachment bolts 260 Nm
Notes:
1. Only fit a new nut and apply Loctite 262 to
2. Bolts to be treated with Loctite 572
3. Only use a new nut
phase 500 Nm
rd
phase 550 Nm
th
phase turn the hub 10 revolutions at a speed of
th
phase 1300 Nm
secure
approx. 40 rpm
approx. 40 rpm
(1) / (3)
(2)
(3)
7.3 FILLING CAPACITIES
Differential
Filling capacity approx. 9.0 litres
7-2
ᓻ 200313
8
DIAGNOSTICS
LF45/55 series Contents
CONTENTS
Page Date
1. SINGLE REAR AXLE 5.10 1-1 200313.............................................. ....
1.1 Fault-finding table 1-1 200313................................................. ....
2. SINGLE REAR AXLE 5.12 2-1 200313.............................................. ....
2.1 Fault-finding table 2-1 200313................................................. ....
3. SINGLE REAR AXLE 5.14 3-1 200313.............................................. ....
3.1 Fault-finding table 3-1 200313................................................. ....
4. SINGLE REAR AXLE 8.20 4-1 200313.............................................. ....
4.1 Fault-finding table 4-1 200313................................................. ....
5. SINGLE REAR AXLE 10.20 5-1 200313............................................. ....
5.1 Fault-finding table 5-1 200313................................................. ....
6. SINGLE REAR AXLE 10.26 6-1 200313............................................. ....
6.1 Fault-finding table 6-1 200313................................................. ....
7. SINGLE REAR AXLE 11.26 7-1 200313............................................. ....
7.1 Fault-finding table 7-1 200313................................................. ....
1
ᓻ 200313
1
1
8DIAGNOSTICS
Contents LF45/55 series
2
ᓻ 200313
8
DIAGNOSTICS
LF45/55 series Single rear axle 5.10
1. SINGLE REAR AXLE 5.10
1.1 FAULT-FINDING TABLE
COMPLAINT: NOISES IN REAR AXLE AND DRIVE ASSEMBLY
Possible cause Remedy
Oil level too low Topupoil
Incorrect oil viscosity Drain oil and top up
Attachment bolts loosened or broken off Drain oil and check drained oil for metal particles
Pinion bearing play Adjust and/or replace
COMPLAINT: OIL LEAK
Possible cause Remedy
Oil level too high Drain oil
Incorrect oil viscosity Drain oil and top up
Leaking oil seal Replace oil seal
Bleeding system blocked Clean or replace the bleeding system
Oil leakage between the differential gear housing
mating surfaces
Clean mating surfaces and apply new sealant
1
ᓻ 200313
1-1
1
DIAGNOSTICS
Single rear axle 5.10 LF45/55 series
8
1-2
ᓻ 200313
8
DIAGNOSTICS
LF45/55 series Single rear axle 5.12
2. SINGLE REAR AXLE 5.12
2.1 FAULT-FINDING TABLE
COMPLAINT: NOISES IN REAR AXLE AND DRIVE ASSEMBLY
Possible cause Remedy
Oil level too low Topupoil
Incorrect oil viscosity Drain oil and top up
Attachment bolts loosened or broken off Drain oil and check drained oil for metal particles
Pinion bearing play Adjust and/or replace
COMPLAINT: OIL LEAK
Possible cause Remedy
Oil level too high Drain oil
Incorrect oil viscosity Drain oil and top up
Leaking oil seal Replace oil seal
Bleeding system blocked Clean or replace the bleeding system
Oil leakage between the differential gear housing
mating surfaces
Clean mating surfaces and apply new sealant
1
ᓻ 200313
2-1
1
DIAGNOSTICS
Single rear axle 5.12 LF45/55 series
8
2-2
ᓻ 200313
8
DIAGNOSTICS
LF45/55 series Single rear axle 5.14
3. SINGLE REAR AXLE 5.14
3.1 FAULT-FINDING TABLE
COMPLAINT: NOISES IN REAR AXLE AND DRIVE ASSEMBLY
Possible cause Remedy
Oil level too low Topupoil
Incorrect oil viscosity Drain oil and top up
Loosened attachment bolts or broken differential
lock parts
Pinion bearing play Adjust and/or replace
COMPLAINT: OIL LEAK
Possible cause Remedy
Oil level too high Drain oil
Incorrect oil viscosity Drain oil and top up
Leaking oil seal Replace oil seal
Bleeding system blocked Clean or replace the bleeding system
Oil leakage between the differential gear housing
mating surfaces
COMPLAINT: DIFFERENTIAL LOCK IS NOT FUNCTIONING
Possible cause Remedy
Drain oil and check drained oil for metal particles
Clean mating surfaces and apply new sealant
1
No air pressure on engaging cylinder Check compressed air system
Defective pneumatic control Check or replace pneumatic switch
Defective mechanical shift control Check shift control
COMPLAINT: DIFFERENTIAL LOCK WARNING LAMP IS NOT FUNCTIONING
Possible cause Remedy
Switch on cylinder fitted too high Readjust switch
Switch on cylinder defective Replace switch
Fault in electrical circuit Check electrical circuit
ᓻ 200313
3-1
1
DIAGNOSTICS
Single rear axle 5.14 LF45/55 series
8
3-2
ᓻ 200313
8
DIAGNOSTICS
LF45/55 series Single rear axle 8.20
4. SINGLE REAR AXLE 8.20
4.1 FAULT-FINDING TABLE
COMPLAINT: NOISES IN REAR AXLE AND DRIVE ASSEMBLY
Possible cause Remedy
Oil level too low Topupoil
Incorrect oil viscosity Drain oil and top up
Loosened attachment bolts or broken differential
lock parts
Pinion bearing play Adjust and/or replace
COMPLAINT: OIL LEAK
Possible cause Remedy
Oil level too high Drain oil
Incorrect oil viscosity Drain oil and top up
Leaking oil seal Replace oil seal
Bleeding system blocked Clean or replace the bleeding system
Oil leakage between the differential gear housing
mating surfaces
COMPLAINT: DIFFERENTIAL LOCK IS NOT FUNCTIONING
Possible cause Remedy
Drain oil and check drained oil for metal particles
Clean mating surfaces and apply new sealant
1
No air pressure on engaging cylinder Check compressed air system
Defective pneumatic control Check or replace pneumatic switch
Defective mechanical shift control Check shift control
COMPLAINT: DIFFERENTIAL LOCK WARNING LAMP IS NOT FUNCTIONING
Possible cause Remedy
Switch on cylinder fitted too high Readjust switch
Switch on cylinder defective Replace switch
Fault in electrical circuit Check electrical circuit
ᓻ 200313
4-1
1
DIAGNOSTICS
Single rear axle 8.20 LF45/55 series
8
4-2
ᓻ 200313
8
DIAGNOSTICS
LF45/55 series Single rear axle 10.20
5. SINGLE REAR AXLE 10.20
5.1 FAULT-FINDING TABLE
COMPLAINT: NOISES IN REAR AXLE AND DRIVE ASSEMBLY
Possible cause Remedy
Oil level too low Topupoil
Incorrect oil viscosity Drain oil and top up
Loosened attachment bolts or broken differential
lock parts
Pinion bearing play Adjust and/or replace
COMPLAINT: OIL LEAK
Possible cause Remedy
Oil level too high Drain oil
Incorrect oil viscosity Drain oil and top up
Leaking oil seal Replace oil seal
Bleeding system blocked Clean or replace the bleeding system
Oil leakage between the differential gear housing
mating surfaces
COMPLAINT: DIFFERENTIAL LOCK IS NOT FUNCTIONING
Possible cause Remedy
Drain oil and check drained oil for metal particles
Clean mating surfaces and apply new sealant
1
No air pressure on engaging cylinder Check compressed air system
Defective pneumatic control Check or replace pneumatic switch
Defective mechanical shift control Check shift control
COMPLAINT: DIFFERENTIAL LOCK WARNING LAMP IS NOT FUNCTIONING
Possible cause Remedy
Switch on cylinder fitted too high Readjust switch
Switch on cylinder defective Replace switch
Fault in electrical circuit Check electrical circuit
ᓻ 200313
5-1
1
DIAGNOSTICS
Single rear axle 10.20 LF45/55 series
8
5-2
ᓻ 200313
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