Infiniti Q45 (FY33). Manual — part 544
SST686CC
SST128B
Pre-disassembly Inspection
Disassemble the power steering oil pump only if the following items
are found.
I
Oil leak from any point shown in the figure.
I
Deformed or damaged pulley.
I
Poor performance
Disassembly
CAUTION:
I
Parts which can be disassembled are strictly limited.
Never disassemble parts other than those specified.
I
Disassemble in as clean a place as possible.
I
Clean your hands before disassembly.
I
Do not use rags; use nylon cloths or paper towels.
I
Follow the procedures and cautions in the Service
Manual.
I
When disassembling and reassembling, do not let foreign
matter enter or contact the parts.
GI
MA
EM
LC
EC
FE
AT
PD
FA
RA
BR
RS
BT
HA
EL
IDX
POWER STEERING OIL PUMP
ST-27
SST010B
I
Remove snap ring, then draw drive shaft out.
Be careful not to drop drive shaft.
SST034A
I
Remove oil seal.
Be careful not to damage front housing.
SST036A
I
Remove connector and flow control valve with spring.
Be careful not to drop flow control valve.
Inspection
I
If pulley is cracked or deformed, replace it.
I
If an oil leak is found around pulley shaft oil seal, replace the
seal.
I
If serration on pulley or pulley shaft is deformed or worn,
replace it.
SST038A
Assembly
Assemble oil pump, noting the following instructions.
I
Make sure O-rings and oil seal are properly installed.
I
Always install new O-rings and oil seal.
I
Be careful of oil seal direction.
I
Cam ring, rotor and vanes must be replaced as a set if neces-
sary.
I
Coat each part with Genuine Nissan PSF II or equivalent when
assembling.
POWER STEERING OIL PUMP
Disassembly (Cont’d)
ST-28
SST289A
I
Pay attention to rotor direction.
SST843A
I
When assembling vanes to rotor, rounded surfaces of vanes
must face cam ring side.
SST497A
I
Insert pin
q
2
into pin groove
q
1
of front housing and front side
plate. Then install cam ring
q
3
as shown at left.
Cam ring:
D
1
is less than D
2
.
GI
MA
EM
LC
EC
FE
AT
PD
FA
RA
BR
RS
BT
HA
EL
IDX
POWER STEERING OIL PUMP
Assembly (Cont’d)
ST-29
Hydraulic Circuit
SST838C
Note: On models equipped with the active damper suspension system, the solenoid valve is controlled
by the active damper suspension control unit, as shown in the above drawing. For “Wiring Dia-
grams” and “Trouble Diagnoses” of these models, refer to FA section, “Active Damper Suspen-
sion”.
TWIN ORIFICE POWER STEERING SYSTEM
ST-30
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