2008 INFINITI FX35 air bleeding

BR-22
< SERVICE INFORMATION >
FRONT DISC BRAKE
2. Apply rubber grease to piston boot. Cover the piston end withpiston boot, and install cylinder side lip on piston boot properly
into groove on cylinder body.
CAUTION:
Do not reuse piston boot.
3. Apply brake fluid to piston, and press piston into cylinder body by hand to assemble piston side lip on piston boot properly into
groove on piston.
CAUTION:
Press piston evenly and vary the pressing point to prevent
cylinder inner wall from being rubbed.
4. Install sliding pins and sliding pin boots to torque member.
5. Install the torque member to the knuckle spindle and tighten the mounting bolts to the specified torque. Refer to BR-18, "
Compo-
nent".
CAUTION:
Before installing torque member to vehicle, wipe oil and
grease on the washer seats on steering knuckle and the
mounting surface of the torque member.
6. Install pad retainers to torque member.
7. After assembling shims and shim covers to pad, install it to torque member.
CAUTION:
Inner pad and outer pad have pad-return mechanism on the
upper side of the pad retainer. When installing pad, be sure to install pad return lever to pad wear
sensor securely as shown in the figure.
8. Install cylinder body, and tighten sliding pin bolt to specified torque. Refer to BR-18, "
Component".
9. Install a projection of brake hose metal fitting by aligning with protrusions on cylinder body, and then tighten union bolts to specified torque. Refer to BR-10, "
Hydraulic Circuit".
CAUTION:
 Assemble brake hose securely to protrusions on cylinder body.
 Do not reuse copper washer for union bolts.
10. After installing caliper assembly, refill with new brake fluid and bleed air. Refer to BR-8, "
Bleeding Brake
System".
DISC ROTOR INSPECTION
Visual Inspection
Check surface of disc rotor for uneven wear, cracks, and serious damage. If any of them is detected, replace
applicable part.
Runout Inspection
1. Using wheel nuts, fix disc rotor to wheels hub. (2 or more positions)
SFIA2432E
SFIA2279E
SBR557E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

BR-26
< SERVICE INFORMATION >
REAR DISC BRAKE
CAUTION:
 Refill with new brake fluid “DOT 3”.
 Do not reuse drained brake fluid.
1. Install disc rotor.CAUTION:
Align the matching marks of disc rotor and wheel hub, which were marked at the time of removal
when reusing disc rotor.
2. Install caliper assembly to the vehicle, and tighten bolts to the specified torque. Refer to BR-24, "
Compo-
nent".
CAUTION:
Before installing caliper assembly to the vehicle , wipe off oil and grease on washer seats on axle
assembly and mounting surface of caliper assembly.
3. Install brake hose to caliper assembly and tighten union bolt to the specified torque. Refer to BR-24,
"Component".
CAUTION:
 Do not reuse copper washer for union bolts.
 Securely install brake hose to protrusion on caliper assembly.
4. After installing caliper assembly, refill with new brake fluid and bleed air. Refer to BR-8, "
Bleeding Brake
System".
5. Install tires to the vehicle.
Disassembly and Assembly of Brake Caliper AssemblyINFOID:0000000001327637
NOTE:
Do not remove torque member, brake pads, shims, shim cover and pad retainers, when disassembling or
assembling cylinder body.
DISASSEMBLY
1. Remove sliding pin bolts, and then remove brake pads, shims, shim cover, and pad retainer from torque
member and cylinder.
CAUTION:
Do not drop brake pads, shims, shim cover and pad retainer from torque member.
2. Remove sliding pin boot from torque member.
3. As shown in the figure, using a flat-bladed screwdriver, remove retaining ring from cylinder body.
4. Place a wooden block as shown in the figure, and blow air from union bolt mounting hole to remove pistons and piston boots.
CAUTION:
Do not get your fingers caught in piston.
SBR028A
BRD0041D
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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BR-28
< SERVICE INFORMATION >
REAR DISC BRAKE
3. Apply brake fluid to piston, and press piston into cylinder bodyby hand to assemble piston side lip on piston boot properly into
groove on piston.
CAUTION:
Press piston evenly and change the pressing point to pre-
vent the inner wall of cylinder from being rubbed.
4. Fix piston boot with retaining ring. CAUTION:
 Make sure boot is firmly in cylinder body groove.
 Do not reuse retaining ring.
5. Install sliding pin bolts and sliding pin boots to torque member.
6. Apply PBC (Poly Butyl Cuprysil) grease or silicone- based grease to the backside of brake pad and to both
sides of shim, and attach inner shim and shim cover to inner pad, and the outer shim to outer pad.
7. Assembling shims and shim cover to pad. CAUTION:
When attaching pad retainer, inst all it firmly so that it does
not float up higher than torque member, as shown in the fig-
ure.
8. Install brake pad retainer and pad to torque member.
9. Install cylinder body. Tighten sliding pin bolts to the specified torque. Refer to BR-24, "
Component".
10. After installing caliper assembly, refill with new brake fluid and bleed air. Refer to BR-8, "
Bleeding Brake System".
DISC ROTOR INSPECTION
Visual Inspection
Check surfaces of disc rotor for uneven wear, cra cks, and serious damage. If a malfunction is detected,
replace applicable part.
Runout Inspection
1. Using wheel nuts, fix the disc rotor to wheels hub. (2 or more positions)
2. Using a dial indicator, check runout.
CAUTION:
Before measuring, make sure that wheel bearing axle end
play is within the specification. Refer to RAX-6, "
On-Vehicle
Inspection".
3. If runout is outside the limit, find minimum runout point by shift- ing mounting positions of disc rotor and wheel hub by one hole.
SFIA2279E
SFIA2280E
PFIA0273E
Measurement point : At a point 10 mm (0.394 in)
from outer edge of disc.
Runout limit : 0.05 mm (0.0020 in) or less
SBR019B
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

BRC-54
< SERVICE INFORMATION >[VDC/TCS/ABS]
ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)
ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)
Removal and InstallationINFOID:0000000001327700
REMOVAL
1. Disconnect ABS actuator and electric unit (control unit) connector.
2. Loosen brake tube flare nuts, then remove brake tubes
from ABS actuator and electric unit (control unit).
3. Remove LH side fender protector. Refer to EI-24
.
4. Remove ABS actuator and electric unit (control unit) mounting nuts.
5. Remove ABS actuator and electric unit (control unit) from vehicle.
CAUTION:
Be careful of the following wh en removing ABS actuator and electric unit (control unit).
 If the part number on the part number label (p asted on actuator upper surface) is the same, ABS
actuator and electric unit (c ontrol unit) can not be used on another vehicle.
If it is used on another vehicle, ABS warning lamp, SLIP indicator lamp and VDC OFF indicator lamp
may turn ON or VDC/TCS/ABS may not operate normally.
When replacing ABS actuator an d electric unit (control unit), must use new service parts.
 Before servicing, disconnect battery cables.
 To remove brake tube, use a flare nut torque wrench to prevent flare nuts and brake tube from being
damaged. To install, use a flare nut torque wren ch (commercial service tool) and tighten to the spec-
ified torque.
 Do not apply excessive impact to actuator, such as dropping it.
 Do not remove and install ABS actuator and el ectric unit (control unit) by holding harness.
INSTALLATION
Note the following, and install in the reverse order of removal.
CAUTION:
Be careful of the following wh en installing ABS actuator and electric unit (control unit).
 Tighten the mounting bolts and nuts to the specified torque.
 After the work, bleed air from brake piping. Refer to BR-8, "
Bleeding Brake System".
 After installing vehicle harness connector in th e actuator, make sure connector is securely locked.
 When replacing ABS actuator and el ectric unit (control unit), calibrate steering angle sensor neutral
position and decel G sensor. Refer to BRC-8
.
PFIA0601E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

PS-1
STEERING
C
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H I
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M
SECTION PS
A
B
PS
N
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CONTENTS
POWER STEERING SYSTEM
SERVICE INFORMATION .. ..........................2
PRECAUTIONS .............................................. .....2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
2
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect .....................................
2
Precaution for Steering System ................................2
PREPARATION ...................................................4
Special Service Tool ........................................... ......4
Commercial Service Tool ..........................................5
NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING .............................
6
NVH Troubleshooting Chart ................................ ......6
POWER STEERING FLUID ................................7
Checking Fluid Level ........................................... ......7
Checking Fluid Leakage ............................................7
Air Bleeding Hydraulic System ..................................7
STEERING WHEEL .............................................9
On-Vehicle Inspection and Service ..................... ......9
Removal and Installation .........................................10
STEERING COLUMN .........................................12
Removal and Installation ..................................... ....12
Disassembly and Assembly .....................................14
POWER STEERING GEAR AND LINKAGE ....17
Removal and Installation .........................................17
Disassembly and Assembly .....................................19
POWER STEERING OIL PUMP .......................27
On-Vehicle Inspection and Service .........................27
Removal and Installation (VQ35DE Models) ...........28
Removal and Installation (VK45DE Models) ...........29
Disassembly and Assembly (VQ35DE Models) ......29
Disassembly and Assembly (VK45DE Models) .......32
HYDRAULIC LINE ............................................37
Component ..............................................................37
Removal and Installation .........................................39
SERVICE DATA AND SPECIFICATIONS
(SDS) .................................................................
41
Steering Wheel ........................................................41
Steering Angle .........................................................41
Steering Column ......................................................41
Steering Outer Socket and Inner Socket .................41
Steering Gear ..........................................................42
Oil Pump ..................................................................43
Steering Fluid ..........................................................43
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3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

POWER STEERING FLUIDPS-7
< SERVICE INFORMATION >
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M A
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PS
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POWER STEERING FLUID
Checking Fluid LevelINFOID:0000000001327709
 Stop engine before performing a fluid level check.
 Ensure that fluid level is between the MAX range and MIN level.
 Because fluid level differs within the HOT range and the COLD range, check it carefully.
CAUTION:
 Do not overfill the Max level.
 Do not reuse any used power steering fluid.
 For recommended fluid, refer to MA-9, "
Fluids and Lubricants".
Checking Fluid LeakageINFOID:0000000001327710
Check the hydraulic piping lines for improper attachment and for
leaks, cracks, damage, loose connections, chafing or deterioration.
1. Run engine until fluid temperature reaches 50 to 80 ° C (122 to
176 °F) in reservoir tank. Keep engine speed idle.
2. Turn steering wheel right-to-left several times.
3. Hold steering wheel at each “lock” position for five seconds to check fluid leakage.
CAUTION:
Do not hold steering wheel in a locked position for more
than 10 seconds. (There is the possibility that oil pump may
be damaged.)
4. If fluid leakage at connections is noticed, then loos en flare nut and then retighten. Do not over tighten con-
nector as this can damage O-ring, washer and connector.
5. If fluid leakage from oil pump is noticed, check oil pump. Refer to PS-27
.
6. Check steering gear boots for accumulation of fluid indicating a from steering gear.
Air Bleeding Hydraulic SystemINFOID:0000000001327711
Incomplete air bleeding causes the following. When this happens, bleed air again.
 Generation of air bubbles in reservoir tank.
 Generation of clicking noise in oil pump.
 Excessive buzzing in oil pump. NOTE:
When vehicle is stationary or while steering wheel is being turned slowly, some noise may be heard from oil
pump or gear. This noise is normal and does not affect any system.
1. Stop engine, and then turn steering wheel fully to right and left several times. CAUTION:
Do not allow steering fluid reservoir tank to go below the low-level line. Check tank frequently and
add fluid as needed.
2. Run engine at idle speed. Turn steering wheel fully to the right and then fully to the left, and keep for about
three seconds. Then check whether a fluid leakage has occurred.
3. Repeat the 2nd procedure several times at about three seconds intervals. CAUTION:
Do not hold steering wheel in the locked position more than 10 seconds. (There is the possibility
that oil pump may be damaged.)
4. Check generation of air bubbles and cloud in fluid.
5. If air bubbles and the cloud don't fade, stop engine, hold air bleeding until air bubbles and the cloud fade.
Perform the 2nd and the 3rd procedures again. HOT : Fluid temperatures from 50 to 80
°C (122 to
176 °F)
COLD : Fluid temperatures from 0 to 30 °C (32 to 86 °F)
SGIA0232J
SGIA0506E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

POWER STEERING GEAR AND LINKAGEPS-19
< SERVICE INFORMATION >
C
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H I
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M A
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PS
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 When steering wheel is set in the straight ahead direction, confirm slit of lower joint fits with the projection on rear cover cap, further-
more marking position on steering gear assembly nearly fits with
the projection on rear cover cap.
 After installation, bleed air from piping. Refer to PS-7, "
Air Bleeding
Hydraulic System".
INSPECTION AFTER INSTALLATION
Check if steering wheel turns smoothly when it is tur ned several times fully to the end of the left and right.
Disassembly and AssemblyINFOID:0000000001327717
COMPONENTS
SGIA0539E
1. Outer socket 2. Boot clamp 3. Boot
4. Inner socket 5. Boot clamp 6. Gear housing assembly
7. Rack oil seal 8. Rack assembly 9. Rack Teflon ring
10. O-ring 11. End cover assembly 12. Cylinder tubes
SGIA1678E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

POWER STEERING OIL PUMPPS-27
< SERVICE INFORMATION >
C
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H I
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M A
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PS
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POWER STEERING OIL PUMP
On-Vehicle Inspection and ServiceINFOID:0000000001327718
CHECKING RELIEF OIL PRESSURE (VQ35DE MODELS)
CAUTION:
Before starting work, confirm belt tension is proper.
1. Connect oil pressure gauge (SST) and oil pressure gauge adapter (SST) between oil pump discharge connector and high
pressure hose and then bleed air from the hydraulic circuit.
2. Start engine. Allow engine to run until tank temperature reaches 50 to 80 °C (122 to 176 °F).
CAUTION:
 Warm up engine with shut-o ff valve fully opened. If engine
is started with shut-off val ve closed, fluid pressure in
power steering pump increases to maximum. This will
raise fluid temperature excessively.
 Be careful not to contact hose with belt when engine is
started.
3. With engine at idle, close shut-off valve and read the relief oil pressure.
CAUTION:
Do not close shut-off valve of pressu re gauge for more than 10 seconds.
4. After measurement, open shut-off valve slowly. If relief oil pressure is outside the specificat ion, disassemble and repair oil pump. Refer to PS-29, "
Disas-
sembly and Assembly (VQ35DE Models)".
5. After inspection, disconnect oil pressure gauge ( SST) and oil pressure gauge adapter (SST) from hydrau-
lic circuit, connect oil pump discharge connector and high pressure hose. Add fluid and bleed air from
hydraulic circuit thoroughly.
Refer to PS-7, "
Air Bleeding Hydraulic System".
CHECKING RELIEF OIL PRES SURE (VK45DE MODELS)
CAUTION:
SGIA0570E
SST
Pressure gauge KV48103500
(J-26357&J-26357-10)
Oil pump side Eye joint KV48102500-01 ( — )
Washer KV48102500-04 ( — )
Bolt KV48102500-03 ( — )
High pressure piping side Flare joint KV48102500-02 ( — )
Washer KV48102500-04 ( — )
Bolt KV48102500-03 ( — )
Relief oil pressure
: 9,900 - 10,700 kPa (101 - 109.1 kg/cm
2, 1436 - 1552 psi)
SGIA0522E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C