Infiniti G37 Coupe. Manual — part 1236
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ST-44
< ON-VEHICLE REPAIR >
POWER STEERING OIL PUMP
1.
Connect the oil pressure gauge [SST: KV48103500 (J-26357)]
and the oil pressure gauge adapter [SST: KV48102500 (J-
33914)] between oil pump discharge connector and high-pres-
sure hose. Bleed air from the hydraulic circuit while opening
valve fully. Refer to
.
2.
Start engine. Run engine until oil temperature reaches 50 to
80
°
C (122 to 176
°
F).
CAUTION:
• Leave the valve of the oil pressure gauge fully open while
starting and running engine. If engine is started with the
valve closed, the hydraulic pressure in oil pump goes up
to the relief pressure along with unusual increase of oil
temperature.
• Be sure to keep hose clear of belts and other parts when
engine is started.
3.
Fully close the oil pressure gauge valve with engine at idle and
measure the relief oil pressure.
CAUTION:
Never keep valve closed for 10 seconds or longer.
4.
Open the valve slowly after measuring. Repair oil pump if the relief oil pressure is outside the standard.
Refer to
ST-41, "SPORT MODELS : Disassembly and Assembly"
5.
Disconnect the oil pressure gauge from hydraulic circuit.
6.
When installing eye bolt (1) and copper washer (2) to oil pump
(3), refer to the figure.
CAUTION:
• Never reuse copper washer.
• Apply power steering fluid or equivalent to around copper
washer, then install eye-bolt.
• Install eye-bolt with eye-joint (assembled to high pressure
hose) (B) protrusion (A) facing with pump side cutout, and
then tighten it to the specified torque after tightening by
hand. Refer to
• Securely insert harness connector to pressure sensor.
7.
Check fluid level, fluid leakage and air bleeding hydraulic sys-
tem after the installation. Refer to
BEFORE DISASSEMBLY
Disassemble oil pump only when the following malfunctions occur.
• If oil leakage is found on oil pump.
• Oil pump pulley is damaged or deformed.
• Performance of oil pump is low.
AFTER DISASSEMBLY
Body Assembly and Rear Cover Inspection
• Check body assembly and rear cover for internal damage. Replace rear cover if it is damaged. Replace oil
pump assembly if body assembly is damaged.
Cartridge Assembly Inspection
• Check cam ring, rotor and vane for damage. Replace cartridge assembly if there are.
Side Plate Inspection
• Check side plate for damage. Replace side plate if there are.
Flow Control Valve Inspection
• Check flow control valve and spring for damage. Replace if there are.
Standard
Relief oil pressure
: Refer to
.
SGIA0915E
SGIA1379E
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HYDRAULIC LINE
ST-45
< ON-VEHICLE REPAIR >
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HYDRAULIC LINE
Exploded View
INFOID:0000000001666252
Except for sport models
JSGIA0045GB
1.
High pressure piping and low pres-
sure piping
2.
Pressure sensor
3.
Copper washer
4.
Collar
5.
Bushing
6.
Reservoir tank bracket
7.
Reservoir tank
8.
Clamp
9.
Suction hose
10. Return hose
11.
Oil cooler
12. O-ring
13. Gear-sub assembly
A.
To power steering oil pump suction hose.
B.
To power steering oil pump.
: Vehicle front
: Apply power steering fluid.
Refer to
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ST-46
< ON-VEHICLE REPAIR >
HYDRAULIC LINE
Sport models
JSGIA0044GB
1.
High pressure piping and low pres-
sure piping
2.
Pressure sensor
3.
Copper washer
4.
Collar
5.
Bushing
6.
Reservoir tank bracket
7.
Reservoir tank
8.
Clamp
9.
Suction hose
10. Return hose
11.
Oil cooler
12. O-ring
13. Gear-sub assembly
A.
To power steering oil pump suction hose.
B.
To power steering oil pump.
: Vehicle front
: Apply power steering fluid.
Refer to
for symbols not described on the above.
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SERVICE DATA AND SPECIFICATIONS (SDS)
ST-47
< SERVICE DATA AND SPECIFICATIONS (SDS)
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SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
General Specifications
INFOID:0000000001666254
Steering Wheel Axial End Play and Play
INFOID:0000000001666255
Unit: mm (in)
Steering Wheel Turning Force
INFOID:0000000001666256
Unit: N·m (kg-m, in-lb)
Steering Angle
INFOID:0000000001666257
Unit: Degree minute (Decimal degree)
Steering Column Operating Range
INFOID:0000000001666258
Applied model
VQ37HR
Steering gear model
PR26AF
Fluid capacity (Approx.)
(US qt, lmp qt)
1.0 (1-1/8, 7/8)
Item
Standard
Steering wheel axial end play
0 (0)
Steering wheel play on the outer circumference
0 – 35 (0 – 1.38)
Item
Standard
Steering wheel turning force
7.45 (0.76, 66)
Item
Standard
Inner wheel
Minimum
36
°
45
′
(36.8
°
)
Nominal
39
°
45
′
(39.8
°
)
Maximum
40
°
45
′
(40.8
°
)
Outer wheel
Nominal
33
°
30
′
(33.5
°
)
Item
Standard
Tilt operating range “T”
65 mm (2.56 in)
Telescopic operating range “L”
47 mm (1.85 in)
Manual Models
JSGIA0033ZZ
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