Rear Suspension: Section
Rear Suspension: Section
SECTION RSU
REAR SUSPENSION
B
RSU
CONTENTS
PRECAUTION ............................................... 2 Exploded View .........................................................11 F
Removal and Installation .........................................11
PRECAUTIONS ................................................... 2 Inspection ................................................................12
Precautions for Suspension ...................................... 2 G
Precautions for Removing of Battery Terminal ......... 2 FRONT LOWER LINK ....................................... 14
Exploded View .........................................................14
PREPARATION ............................................ 3 Removal and Installation .........................................14
Inspection ................................................................14 H
PREPARATION ................................................... 3
Special Service Tools ................................................ 3 REAR LOWER LINK ......................................... 16
Commercial Service Tools ........................................ 3 Exploded View .........................................................16 I
Removal and Installation .........................................16
SYMPTOM DIAGNOSIS ............................... 4 Inspection ................................................................16
NOISE, VIBRATION AND HARSHNESS TOE CONTROL LINK ....................................... 18 J
(NVH) TROUBLESHOOTING ............................. 4 Exploded View .........................................................18
NVH Troubleshooting Chart ...................................... 4 Removal and Installation .........................................18
Inspection ................................................................18 K
PERIODIC MAINTENANCE .......................... 5
REAR STABILIZER .......................................... 20
REAR SUSPENSION ASSEMBLY ..................... 5 Exploded View .........................................................20
Inspection .................................................................. 5 Removal and Installation .........................................20 L
Inspection ................................................................20
WHEEL ALIGNMENT .......................................... 6
Inspection .................................................................. 6 REAR SUSPENSION ASSEMBLY ................... 21 M
Adjustment ................................................................ 6 Exploded View .........................................................21
Removal and Installation .........................................21
REMOVAL AND INSTALLATION ................ 8 Inspection ................................................................22
N
REAR COIL SPRING AND SHOCK ABSORB-
SERVICE DATA AND SPECIFICATIONS
ER ........................................................................ 8
Exploded View .......................................................... 8
(SDS) ............................................................ 23
O
Removal and Installation ........................................... 8 SERVICE DATA AND SPECIFICATIONS
Disassembly and Assembly ...................................... 8 (SDS) ................................................................. 23
Inspection ................................................................ 10
Wheel Alignment .....................................................23
Disposal .................................................................. 10 P
Ball Joint ..................................................................23
SUSPENSION ARM ...........................................11 Wheelarch Height ....................................................23
• When installing rubber bushings, the final tightening must be carried out under unladen conditions with tires
on ground. Spilled oil might shorten the life of rubber bushings. Be sure to wipe off any spilled oil.
- Unladen conditions mean that fuel, engine coolant and lubricant are full. Spare tire, jack, hand tools and
mats are in designated positions.
• After servicing suspension parts, be sure to check wheel alignment.
• Self-lock nuts are not reusable. Always use new ones when installing. Since new self-lock nuts are pre-oiled,
tighten as they are.
Precautions for Removing of Battery Terminal INFOID:0000000010176369
• When removing the 12V battery terminal, turn OFF the ignition
switch and wait at least 30 seconds.
NOTE:
ECU may be active for several tens of seconds after the ignition
switch is turned OFF. If the battery terminal is removed before ECU
stops, then a DTC detection error or ECU data corruption may
occur.
• For vehicles with the 2-batteries, be sure to connect the main bat-
tery and the sub battery before turning ON the ignition switch.
NOTE:
If the ignition switch is turned ON with any one of the terminals of
SEF289H
main battery and sub battery disconnected, then DTC may be
detected.
• After installing the 12V battery, always check "Self Diagnosis Result" of all ECUs and erase DTC.
NOTE:
The removal of 12V battery may cause a DTC detection error.
Tool number C
(Kent-Moore No.) Description
Tool name
ST3127S000 Measuring rotating torque of ball joint D
(J-25765-A)
Preload gauge
RSU
ZZA0806D F
ST35652000 Disassembling and assembling shock
( – ) absorber
Shock absorber attachment G
H
ZZA0807D
L
PBIC0190E
S-NT717
×: Applicable
Noise
Shake
Judder
Shimmy
handling
Vibration
SYMPTOM DIAGNOSIS
×
×
×
×
×
×
Shock absorber deformation, damage or deflection RSU-10
×
×
×
×
×
×
Bushing or mounting deterioration —
RSU-4
×
×
×
×
×
Parts interference —
×
×
×
Spring fatigue RSU-10
×
×
Suspension looseness RSU-8, RSU-11, RSU-14, RSU-16, RSU-18, RSU-20, RSU-21
Use chart below to find the cause of the symptom. If necessary, repair or replace these parts.
×
×
Incorrect wheel alignment RSU-6
×
Stabilizer bar fatigue RSU-20
×
×
×
PROPELLER SHAFT NVH in DLN section.
×
DIFFERENTIAL NVH in DLN section.
×
×
×
×
×
×
REAR AXLE AND REAR SUSPENSION NVH in RAX and RSU sections.
×
×
×
×
×
×
TIRE NVH in WT section.
×
×
×
×
×
ROAD WHEEL NVH in WT section.
×
×
×
DRIVE SHAFT NVH in RAX section.
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
×
×
×
×
BRAKE NVH in BR section.
×
×
×
×
×
STEERING NVH in ST section.
INFOID:0000000010100272
2014 Q70
REAR SUSPENSION ASSEMBLY
< PERIODIC MAINTENANCE >
PERIODIC MAINTENANCE A
REAR SUSPENSION ASSEMBLY
Inspection INFOID:0000000010100273
B
COMPONENT PART
Check the mounting conditions (looseness, backlash) of each component and component conditions (wear, C
damage) are normal.
Ball Joint Axial End Play
Move axle side of suspension arm in the axial direction by hand. D
Check there is no end play.
JSEIA0444ZZ G
SHOCK ABSORBER
Check for oil leakage and damage. Replace it if necessary.
H
DESCRIPTION
Measure wheel alignment under unladen conditions.
NOTE:
“Unladen conditions” means that fuel, engine coolant, and lubricant are full. Spare tire, jack, hand tools and
mats are in designated positions.
PRELIMINARY CHECK
Check the following:
• Tires for improper air pressure and wear. Refer to WT-71, "Tire Air Pressure".
• Road wheels for runout.
• Wheel bearing axial end play. Refer to RAX-6, "Inspection".
• Ball joint axial end play of suspension arm. Refer to RSU-5, "Inspection".
• Shock absorber operation.
• Each mounting point of axle and suspension for looseness and deformation.
• Each of front lower link, rear lower link, toe control link, rear suspension member, suspension arm and shock
absorber for cracks, deformation, and other damage.
• Vehicle height (posture).
GENERAL INFORMATION AND RECOMMENDATIONS
• A four-wheel thrust alignment should be performed.
- This type of alignment is recommended for any NISSAN/INFINITI vehicle.
- The four-wheel “thrust” process helps ensure that the vehicle is properly aligned and the steering wheel is
centered.
- The alignment rack itself should be capable of accepting any NISSAN/INFINITI vehicle.
- The rack should be checked to ensure that it is level.
• Make sure the machine is properly calibrated.
- Your alignment equipment should be regularly calibrated in order to give correct information.
- Check with the manufacturer of your specific equipment for their recommended Service/Calibration Sched-
ule.
ALIGNMENT PROCESS
IMPORTANT:
Use only the alignment specifications listed in this Service Manual.
• When displaying the alignment settings, many alignment machines use “indicators”: (Green/red, plus or
minus, Go/No Go). Never use these indicators.
- The alignment specifications programmed into your machine that operate these indicators may not be cor-
rect.
- This may result in an ERROR.
• Most camera-type alignment machines are equipped with both “Rolling Compensation” method and optional
“Jacking Compensation” method to “compensate” the alignment targets or head units. “Rolling Compensa-
tion” is the preferred method.
- If using the “Rolling Compensation” method, after installing the alignment targets or head units, push or pull
on the rear wheel to move the vehicle. Do not push or pull on the vehicle body.
- If using the “Jacking Compensation” method, after installing the alignment targets or head units, raise the
vehicle and rotate the wheels 1/2 turn both ways.
NOTE:
Do not use the “Rolling Compensation” method if you are using sensor-type alignment equipment.
- Follow all instructions for the alignment machine you're using for more information.
Adjustment INFOID:0000000010100275
CAMBER
: Vehicle front
B
Camber: Refer to RSU-23, "Wheel Alignment".
CAUTION:
After adjusting camber, be sure to check toe-in. C
- If camber is not still within the specification, inspect and replace
any damaged or worn suspension parts. JPEIB0198ZZ
D
TOE-IN
• If toe-in is exceeds the standard value, adjust with adjusting bolt
(2) in toe control link (1).
RSU
: Vehicle front
CAUTION:
Be sure to adjust equally on right and left side with adjusting
G
bolt.
- If toe-in is not still within the specification, inspect and replace any JPEIB0197ZZ
damaged or worn suspension parts.
- After toe-in adjustment, adjust neutral position of steering angle sensor. Refer to BRC-69, "Work Procedure". H
JPEIB0199GB
REMOVAL
1. Remove tires with power tool. Refer to WT-65, "Exploded View".
2. Set suitable jack under axle housing.
CAUTION:
Check that jack supporting status is stable.
3. Remove shock absorber from axle housing.
4. Remove the rear parcel shelf finisher. Refer to INT-46, "Removal and Installation".
5. Remove the seat belt retractor. Refer to SB-14, "SEAT BELT RETRACTOR : Removal and Installation".
6. Remove mounting insulator nuts, and then remove shock absorber assembly.
INSTALLATION
Note the following, and install in the reverse order of removal.
• Perform final tightening of bolts and nuts at the shock absorber lower side (rubber bushing), under unladen
conditions with tires on level ground.
• Perform inspection after installation. Refer to RSU-10, "Inspection".
• After replacing the shock absorber, always follow the disposal procedure to discard the shock absorber.
Refer to RSU-10, "Disposal".
Disassembly and Assembly INFOID:0000000010100278
DISASSEMBLY
CAUTION:
Never damage shock absorber piston rod when removing components from shock absorber.
1. Remove gasket and cap from mounting insulator.
JPEIA0006ZZ
D
3. Using a spring compressor (A) (commercial service tool), com-
press coil spring between rubber seat and shock absorber until
coil spring with a spring compressor is free.
RSU
CAUTION:
Be sure a spring compressor is securely attached coil
spring. Compress coil spring.
4. Make sure coil spring with a spring compressor between rubber F
seat and shock absorber is free. And then remove piston rod
lock nut while securing the piston rod tip so that piston rod does
not turn. G
CAUTION: JPEIA0168ZZ
Start compressing the coil spring after checking that the
spring compressor is completely attached.
H
5. Remove mounting insulator, rubber sheet, and bound bumper from shock absorber.
6. After remove coil spring with a spring compressor (commercial service tool), and then gradually release a
spring compressor.
I
CAUTION:
Loosen while making sure coil spring attachment position does not move.
7. Remove the shock absorber attachment [SST: ST35652000 ( – )] from shock absorber.
J
ASSEMBLY
CAUTION:
Never damage shock absorber piston rod when installing components from shock absorber.
K
1. Install shock absorber attachment [SST: ST35652000 ( – )] to shock absorber and secure it in a vise.
CAUTION:
When installing the shock absorber attachment to shock absorber, wrap a shop cloth around
shock absorber to protect it from damage. L
2. Compress coil spring using a spring compressor (commercial service tool), and install it onto shock
absorber.
CAUTION: M
• Install with the large-diameter side (A) facing up and the
small-diameter side (B) facing down.
• Be sure a spring compressor is securely attached to coil N
spring. Compress coil spring.
3. Apply soapy water to bound bumper.
CAUTION:
O
Never use machine oil.
P
JPEIB0200ZZ
A : LH
B : RH
: Vehicle front (shock absorber lower bolt insertion direction)
6. Gradually release a spring compressor (commercial service tool), and remove coil spring.
CAUTION:
Loosen while making sure coil spring attachment position does not move.
7. Remove the shock absorber attachment [SST: ST35652000 ( – )] from shock absorber.
8. Install the gasket and cap to the mounting insulator.
Inspection INFOID:0000000010100279
1. Set shock absorber horizontally with the piston rod fully extended.
2. Drill 2 – 3 mm (0.08 – 0.12 in) hole at the position ( ) from top
as shown in the figure to release gas gradually.
CAUTION:
• Wear eye protection (safety glasses).
• Wear gloves.
• Be careful with metal chips or oil blown out by the com-
pressed gas.
NOTE:
• Drill vertically in this direction ( ).
• Directly to the outer tube avoiding brackets.
• The gas is clear, colorless, odorless, and harmless. NNEIB0021ZZ
RSU
I
JPEIB0202GB
REMOVAL
Right Side M
1. Remove rear suspension assembly. Refer to RSU-21, "Removal and Installation".
2. Remove stabilizer connecting rod from suspension arm. Refer to RSU-20, "Removal and Installation".
N
3. Separate suspension arm from axle housing. Refer to RAX-8, "Removal and Installation".
4. Remove suspension arm from axle housing.
5. Remove stopper bushing, bolts, and nuts, and then remove suspension arm from suspension member. O
6. Perform inspection after removal. Refer to RSU-12, "Inspection".
Left Side
NOTE: P
When removing and installing the right side at the same time, it is efficient to remove the suspension arm
assembly.
1. Remove tire with power tool. Refer to WT-65, "Exploded View".
2. Remove caliper assembly. Hang caliper assembly in a place where it will not interfere with work. Refer to
BR-57, "BRAKE CALIPER ASSEMBLY (1 PISTON TYPE) : Removal and Installation" (1 piston type), BR-
61, "BRAKE CALIPER ASSEMBLY (2 PISTON TYPE) : Removal and Installation" (2 piston type).
CAUTION:
JPEIA0005ZZ
PDIA1258E
JPEIB0202GB
REMOVAL
1. Remove tires with power tool. Refer to WT-65, "Exploded View".
2. Set suitable jack under axle housing.
CAUTION:
Check that jack supporting status is stable.
3. Separate shock absorber from axle housing. Refer to RSU-8, "Removal and Installation".
4. Remove rear suspension member stay. Refer to RSU-21, "Removal and Installation".
5. Remove nuts and bolts, and remove front lower link.
6. Perform inspection after removal. Refer to RSU-14, "Inspection".
INSTALLATION
Note the following, and install in the reverse order of removal.
• Perform final tightening of rear suspension member installation position (rubber bushing), under unladen
conditions with tires on level ground.
• Perform inspection after installation. Refer to RSU-14, "Inspection".
Inspection INFOID:0000000010100286
RSU
JPEIB0202GB
REMOVAL
1. Remove tires with power tool. Refer to WT-65, "Exploded View".
2. Set suitable jack under axle housing.
CAUTION:
Check that jack supporting status is stable.
3. Separate shock absorber from axle housing. Refer to RSU-8, "Removal and Installation".
4. Remove eccentric disc, adjusting bolt, mounting bolt, and nut. Remove rear lower link.
5. Perform inspection after removal. Refer to RSU-16, "Inspection".
INSTALLATION
Note the following, and install in the reverse order of removal.
• Perform final tightening of rear suspension member installation position (rubber bushing), under unladen
conditions with tires on level ground.
• Perform inspection after installation. Refer to RSU-16, "Inspection".
Inspection INFOID:0000000010100289
RSU
JPEIB0202GB
REMOVAL
1. Remove tires with power tool. Refer to WT-65, "Exploded View".
2. Set suitable jack under axle housing.
CAUTION:
Check that jack supporting status is stable.
3. Separate shock absorber from axle housing. Refer to RSU-8, "Removal and Installation".
4. Remove eccentric disk, adjusting bolt, mounting bolt, and nut. Remove toe control link.
5. Perform inspection after removal. Refer to RSU-18, "Inspection".
INSTALLATION
Note the following, and install in the reverse order of removal.
• Perform final tightening of rear suspension member and axle installation position (rubber bushing), under
unladen conditions with tires on level ground.
• Perform inspection after installation. Refer to RSU-18, "Inspection".
Inspection INFOID:0000000010100292
RSU
JPEIB0203GB
REMOVAL
1. Remove member stay. Refer to RSU-21, "Removal and Installation".
2. Remove stabilizer connecting rod.
3. Remove stabilizer clamp and bushing.
4. Remove stabilizer bar.
5. Perform inspection after removal. Refer to RSU-20, "Inspection".
INSTALLATION
Note the following, and install in the reverse order of removal.
• Perform final tightening of rear suspension member and axle installation position (rubber bushing), under
unladen conditions with tires on level ground.
Inspection INFOID:0000000010100295
RSU
I
JPEIB0204GB
L
REMOVAL
1. Remove tires with power tool. Refer to WT-65, "Exploded View".
2. Remove caliper assemblies. Hang caliper assembly in a place where it will not interfere with work. Refer M
to BR-57, "BRAKE CALIPER ASSEMBLY (1 PISTON TYPE) : Removal and Installation" (1 piston type),
BR-61, "BRAKE CALIPER ASSEMBLY (2 PISTON TYPE) : Removal and Installation" (2 piston type).
CAUTION: N
Avoid depressing brake pedal while brake caliper is removed.
3. Remove disc rotor. Refer to RAX-8, "Removal and Installation".
4. Remove main muffler. Refer to EX-6, "VQ37VHR : Removal and Installation" (VQ37VHR), EX-7, O
"VK56VD : Removal and Installation" (VK56VD).
5. Remove member stay and rear final drive assembly. Refer to DLN-178, "Removal and Installation"
(VQ37VHR), DLN-216, "Removal and Installation" (VK56VD).
P
6. Remove drive shaft. Refer to RAX-13, "Removal and Installation".
7. Separate rear cable from front cable, and then remove rear cable from rear suspension member. Refer to
PB-6, "Removal and Installation".
8. Remove wheel sensor and sensor harness from rear suspension member. Refer to BRC-147, "REAR
WHEEL SENSOR : Removal and Installation".
9. Disconnect height sensor harness connector. Refer to EXL-133, "Removal and Installation" (with AFS).
10. Remove shock absorber from axle housing. Refer to RSU-8, "Removal and Installation".
Item Standard
C
Axle type 2WD AWD
Minimum –1° 30′ (–1.50°) –1° 00′ (–1.00°)
Camber
Nominal –1° 00′ (–1.00°) –0° 30′ (–0.50°) D
Degree minute (Decimal degree)
Maximum –0° 30′ (–0.50°) 0° 00′ (0.00°)
Minimum 0 mm (0 in)
Total toe-in RSU
Nominal In 2.9 mm (In 0.114 in)
Distance
Maximum In 5.8 mm (In 0.228 in)
Toe-in
Minimum 0° 00′ (0.00°) F
Total toe-angle
Nominal In 0° 14′ 24″ (In 0.24°)
Degree minute (Decimal degree)
Maximum In 0° 28′ 12″ (In 0.47°)
Measure value under unladen* conditions. G
*: Fuel, engine coolant and lubricant are full. Spare tire, jack, hand tools and mats are in designated positions.
Item Standard
I
Swing torque 0.5 – 3.4 N·m (0.06 – 0.34 kg-m, 5 – 30 in-lb)
Measurement on spring balance (cotter pinhole position) 8.1 – 54.8 N (0.83 – 5.59 kg, 1.83 – 12.31 lb)
Rotating torque 0.5 – 3.4 N·m (0.06 – 0.34 kg-m, 5 – 30 in-lb) J
Axial end play 0 mm (0 in)
VQ37VHR
L
Item Standard
Axle type 2WD AWD
Wheel size 18 inch 20 inch 18 inch 20 inch M
Front (Hf) 752 mm (29.61 in) 751 mm (29.57 in) 765 mm (30.12 in)
Rear (Hr) 743 mm (29.25 in) 742 mm (29.21 in) 757 mm (29.80 in) 758 mm (29.84 in)
N
SFA818A
Item Standard
Axle type 2WD AWD
Wheel size 18 inch 20 inch 18 inch 20 inch
Front (Hf) 751 mm (29.57 in) 750 mm (29.53 in) 763 mm (30.04 in) 764 mm (30.08 in)
Rear (Hr) 743 mm (29.25 in) 741 mm (29.17 in) 757 mm (29.80 in) 758 mm (29.84 in)
SFA818A