Page 145 of 788
FRONT AXLE HUB ASSEMBLY
FRONT AXLE26-13
REASSEMBLY SERVICE POINTS
>>A<< WHEEL BEARING INSTALLATION
1. Fill the wheel bearing with multipurpose grease.
2. Apply a thin coating of multipurpose grease to the
knuckle and bearing contact surfaces.
CAUTION
Press the outer race when pressing-in the wheel
bearing. Otherwise the wheel bearing will be
damaged.
3. Press-in the bearing by using the following special
tools.
•Rear suspension bushing arbor (MB990883)
•Rear suspension bushing base (MB990890)
>>B<< HUB STARTING TORQUE CHECK
1. Tighten the following special tools to the specified
torque, and then press-in the hub into the knuckle.
•Front hub remover and installer (MB991017)
•Spacer (MB991000)
2. Rotate the hub in order to seat the bearing.3. Measure the hub starting torque by using the
following special tools.
•Torque wrench (MB990685)
•Preload socket (MB990326)
Limit: 1.8 N⋅m
4. The starting torque must be within the limit and
the hub rotation must be smooth.
>>C<< WHEEL BEARING AXIAL PLAY
CHECK
1. Measure to determine whether the wheel bearing
axial play is within the limit or not by using the
following special tools.
•Front hub remover and installer (MB991017)
•Spacer (MB991000)
Limit: 0.05 mm
2. If the play is not within the limit range while the nut
is tightened to 245 ± 29 N⋅m, the bearing, hub
and/or knuckle have probably not been installed
correctly. Replace the bearing and re-install.
INSPECTIONM1261002000078
•Check the front hub and brake disc mounting
surfaces for galling and contamination.
•Check the knuckle inner surface for galling and
cracks.
AC102511
MB990883
MB990890
AC
AC210929AC
MB991000 MB991017
245 ± 29 N·m
Tighten the nut
with the bolt secured
AC100136
MB990685
MB990326
AB
AC100137
MB991000
MB991017
245 ± 29 N·m
AB Tighten the nut
with the bolt
secured
Page 157 of 788
27-1
GROUP 27
REAR AXLE
CONTENTS
GENERAL INFORMATION . . . . . . . .27-2
SERVICE SPECIFICATIONS . . . . . . .27-2
SEALANT . . . . . . . . . . . . . . . . . . . . . .27-2
SPECIAL TOOLS . . . . . . . . . . . . . . . .27-3ON-VEHICLE SERVICE . . . . . . . . . . .27-4
WHEEL BEARING AXIAL PLAY CHECK . . 27-4
REAR HUB ROTARY-SLIDING
RESISTANCE CHECK . . . . . . . . . . . . . . . . 27-4
HUB BOLT REPLACEMENT . . . . . . . . . . . . 27-4
REAR AXLE HUB ASSEMBLY . . . . .27-5
REMOVAL AND INSTALLATION . . . . . . . . 27-5
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . 27-6
Page 158 of 788
GENERAL INFORMATION
REAR AXLE27-2
GENERAL INFORMATION
M1271000100304
The rear axle has the following features:
•The wheel bearing is a unit ball bearing
(double-row angular contact ball bearing) which
incorporates the oil seals and is highly resistant
to a thrust load.•ABS rotor for detecting the wheel speeds is
press-fitted to the rear hub in vehicles with ABS.
CONSTRUCTION DIAGRAM
SERVICE SPECIFICATIONS
M1271000300483
SEALANT
M1271000500261
AC300617AB
Rear hub Oil seal
Wheel bearing
ABS rotor Trailing arm spindle
Item Limit
Wheel bearing axial play mm 0.05
Rear hub rotary-sliding resistance N 19
Item Specified sealant Remark
Hub cap 3M ATD Part No.8663 or equivalent Semi-drying sealant
Page 159 of 788
SPECIAL TOOLS
REAR AXLE27-3
SPECIAL TOOLS
M1271000600495
Tool Number Name Use
MB990767 End yoke holder Hub fixing
MB991618 Hub bolt remover Hub bolt removal
MD998801 Remover Removal of ABS rotor
MD998812 Installer cap
MD998813 Installer 100
MD998815 Installer adapter
B990767
MB991618
Page 160 of 788
ON-VEHICLE SERVICE
REAR AXLE27-4
ON-VEHICLE SERVICE
WHEEL BEARING AXIAL PLAY CHECKM1271000900452
1. Remove the caliper assembly, and suspend the
caliper assembly with a wire and remove the
brake disc.
2. Check the bearing's axial play. Place a dial gauge
against the hub surface; then move the hub in the
axial direction and check whether or not there is
axial play.
Limit: 0.05 mm
3. If the play exceeds the limit, the self-locking nut
should be tightened to the specified torque and
check the axial play again.
Tightening torque: 175 ± 25 N⋅m
4. Replace the rear hub assembly if an adjustment
cannot be made to within the limit.
REAR HUB ROTARY-SLIDING
RESISTANCE CHECK
M1271001100244
1. Remove the caliper assembly, and suspend the
caliper assembly with a wire and remove the
brake disc.
2. Turn the hub a few times to seat the bearing.3. Wind a rope around the hub bolt and turn the hub
by pulling at a 90° angle with a spring balance.
Measure to determine whether or not the
rotary-sliding resistance of the rear hub is at the
limit value.
Limit: 19 N
4. If limit value is exceeded, loosen the self-locking
nut and then tighten it to the specified torque and
check the rear hub rotary sliding resistance again.
Tightening torque: 175 ± 25 N⋅m
5. Replace the rear hub assembly if an adjustment
cannot be made to within the limit.
HUB BOLT REPLACEMENTM1271001000258
1. Remove the caliper assembly and suspend it with
wire so that it does not fall.
2. Remove the brake disc.
3. Use special tool hub bolt remover (MB991618) to
remove the hub bolts.
4. Install the plain washer to the new hub bolt, and
install the bolt with a nut while holding the hub
with special tool end yoke holder (MB990767).
5. Install the brake disc, caliper assembly and
tighten the caliper assembly mounting bolts to the
specified torque 60 ± 5 N⋅m.
AC303736AB
AC303737
AC302114
MB991618
AD
Hub bolt
AC104588
MB990767
Plain
washer
AC
Page 161 of 788
REAR AXLE HUB ASSEMBLY
REAR AXLE27-5
REAR AXLE HUB ASSEMBLY
REMOVAL AND INSTALLATIONM1271002000381
CAUTION
•Care must be taken not to scratch or damage the teeth of the ABS rotor. The ABS rotor must never
be dropped. If the teeth of the ABS rotor are chipped, resulting in a deformation of the ABS rotor,
it will not be able to accurately detect the wheel rotation speed, and the system will not function
normally.
•The rear hub assembly should not be dismantled. When removing the rear hub assembly, the
wheel bearing inner race may be left at the spindle side. In this case, always replace the rear hub
assembly, otherwise the hub will damage the oil seal, causing oil leaks or excessive play.
AC304175
Semi-drying sealant:
3M ATD Part No. 8663 or
equivalent
2
3
5 6
4
N
175 ± 25 N·m
3
AB
1
60 ± 5 N·m
2
56
Removal steps
<>1. Caliper assembly
2. Brake disc
3. Hub cap<> >>B<<4. Self-locking nut
5. Rear hub assembly
<> >>A<<6. ABS rotorRemoval steps (Continued)
Page 162 of 788
Page 165 of 788
TROUBLESHOOTING
WHEEL AND TYRE31-3
TROUBLESHOOTING
DIAGNOSISM1311000700385
Symptom Probable cause Remedy Reference page
Rapid wear
at shouldersUnder-inflation
or lack of
rotationAdjust the tyre
pressure.For tyre inflation
pressure, refer to
the label on the
driver's side centre
pillar.
Rapid wear
at centreOver-inflation
or lack of
rotation
Cracked
treadsUnder-inflation Adjust the tyre
pressure.For tyre inflation
pressure, refer to
the label on the
driver's side centre
pillar.
Wear on one
sideExcessive
camberCheck the camber.
Refer to GROUP
33, On-vehicle
service − Front
wheel alignment
check and
adjustment P.33-5.
Refer to GROUP
34, On-vehicle
service − Rear
wheel alignment
check and
adjustment P.34-5. Feathered
edgeIncorrect toe-in Adjust the toe-in.
Bald spots Unbalanced
wheelBalance the wheels.
P.31-4
ACX00923ABACX00924
AB
ACX00925ABACX00926AB
ACX00927AB
ACX00928
ABACX00929
AB
ACX00930ABACX00931
AB
ACX00932ABACX00933AB
