Nissan Primera P12. Manual — part 420
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EXHAUST MANIFOLD AND TURBOCHARGER
Turbocharger
EBS00SNO
CAUTION:
When the compressor wheel turbine wheel or rotor shaft is damaged, remove all the fragments and
foreign matter left in the following passages in order to prevent a secondary failure:
ROTOR SHAFT CLEARANCE
●
Check that the rotor shaft rotates smoothly without any resis-
tance when it is rotated by your fingertips.
●
Check that the rotor shaft is not loose when it is moved vertically
or horizontally.
ROTOR SHAFT END PLAY
Place a dial gauge at the rotor shaft end in the axial direction to mea-
sure the end play.
MBIA0010E
Suction side
: Between turbocharger and air cleaner
Exhaust side
: Between turbocharger and catalyst
Standard
: 0.086 - 0.117 mm (0.0034 - 0.0046 in)
PBIC0727E
Standard
: 0.036 - 0.090 mm (0.0014 - 0.0035 in)
PBIC0728E
EXHAUST MANIFOLD AND TURBOCHARGER
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TURBINE WHEEL
●
Check that there is no oil adhesion.
●
Check that there is no carbon accumulation.
●
Check that blades of the turbine wheel are not bent or broken.
●
Check that the turbine wheel does not interfere with the turbine
housing.
COMPRESSOR WHEEL
●
Check that there is no oil adhesion inside the air inlet.
●
Check that the compressor wheel does not interfere with the
compressor housing.
●
Check that the wheel is not bent or broken.
TURBOCHARGER BOOST CONTROL ACTUATOR
●
Connect the handy vacuum pump to the actuator, and check
that the rod strokes smoothly in compliance with the following
pressure.
●
Pressure to be applied at actuator part to move rod end as fol-
lows:
PBIC0729E
PBIC0730E
Standard (Pressure/rod stroke amount)
: 52.0 - 54.6 kPa (520 - 546 mbar, 390 - 410 mmHg,
15.306 - 16.094 inHg) / 0.2 mm (0.0079 in)
: 32.0 - 40.0 kPa (320 - 400 mbar, 240 - 300 mmHg, 9.42
- 11.78 inHg) / 5.0 mm (0.197 in)
PBIC0941E
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EXHAUST MANIFOLD AND TURBOCHARGER
TROUBLE DIAGNOSIS OF TURBOCHARGER
Preliminary check:
●
Check that the engine oil level is between MIN and MAX of the dipstick. (When the engine oil amount is
more than MAX, the oil flows into the inlet duct through the blow-by gas passage, and the turbocharger is
misjudged failure.)
●
Ask the customer if he/she always runs the vehicle in idle engine speed to cool the oil down after driving.
●
Replace the turbocharger assembly when any malfunction is found after unit inspections specified in the
table below.
●
If no malfunction is found after the unit inspections, judge that the turbocharger body has no failure. Check
the other parts again.
A: Large possibility
B: Medium possibility
C: Small possibility
Inspection item
Inspection result
Symptom
(when each inspection item meets each inspection result)
Oil leakage
Smoke
Noise
Insufficient power/
acceleration failure
Turbine wheel
Oil leaks
C
A
C
C
Carbon is accumulated
C
A
B
B
Friction with housing
C
B
A
B
Blades are bent or broken
A
A
Compressor wheel
Inside the air inlet is seriously con-
taminated by oil.
B
B
Friction with housing
C
B
A
B
Blades are bent or broken
A
A
After checking both turbine and
compressor, inspect rotor shaft
end play.
There is resistance when the rotor
shaft is rotated by your fingertips.
C
C
B
The rotor shaft sometimes does not
rotate by your fingertips.
A
There is too much play in the bear-
ing.
C
C
B
C
Oil return port
Carbon or sludge is accumulated in
the waste oil hole.
C
A
C
C
OIL PAN AND OIL STRAINER
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OIL PAN AND OIL STRAINER
PFP:11110
Removal and Installation
EBS00SNP
REMOVAL
WARNING:
To avoid the danger of being scalded, never drain the engine oil when the engine is hot.
When removing the transaxle, first remove the crankshaft position sensor from the assembly.
Be careful not to damage sensor edges and signal plate teeth.
1.
Remove engine undercover.
2.
Drain engine oil. Refer to
.
3.
Remove A/C compressor bracket.
4.
Remove lower oil pan bolts. Loosen bolts in the reverse order of
that shown in the figure.
MBIA0029E
1.
Rear plate cover
2.
Oil pan upper
3.
Oil strainer
4.
Drain plug
5.
Oil pan lower
6.
Crankshaft position sensor
JEM114G
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