Nissan Terrano model r20 series 2004. Instruction — part 53
OIL SEAL INSTALLING DIRECTION
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When installing a new front or rear oil seal, make sure its
mounting direction is correct.
CRANKSHAFT FRONT OIL SEAL
1. Remove protecting cover.
2. Remove radiator shroud.
3. Remove cooling fan.
4. Remove drive belts.
5. Remove crank pulley.
6. Remove crankshaft oil seal.
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Be careful not to damage sealing surfaces of crankshaft.
7. Coat new oil seal with engine oil and install it in place.
CRANKSHAFT REAR OIL SEAL
1. Dismount transmission.
2. Remove clutch cover assembly.
3. Remove flywheel and rear plate.
4. Remove oil seal retainer assembly, then remove oil seal.
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Be careful not to damage sealing surfaces of crankshaft.
5. Coat new oil seal with engine oil and install it in place.
SEM715A
SEM644B
SEM217B
OIL SEAL REPLACEMENT
TD27Ti
EM-118
Removal and Installation
Turbocharger should not be disassembled.
1. Drain engine coolant.
2. Remove the following:
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Air duct and intercooler components
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Heat shield plates
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Exhaust front tube
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Oil tubes
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Water tubes
3. Remove turbocharger from exhaust manifold.
4. Remove turbocharger bracket bolts.
Inspection
Condition 1: Low engine power
Probable cause
Corrective action
Air leak at the connection of compressor housing and suc-
tion hose/inlet tube, or inlet and intake manifold.
E
Correct the connection.
Exhaust gas leak at the connection of turbine housing and
exhaust manifold, connecting tube or exhaust outlet.
E
Correct the connection or replace gasket.
By-pass valve is stuck in open position.
E
Replace turbocharger assembly.
Stuck or worn journal or bearing.
E
Broken shaft.
E
Sludge on back of turbine wheel.
E
Broken turbine wheel.
E
Condition 2: Excessively high engine power
Probable cause
Corrective action
Disconnected or cracked rubber hose of by-pass valve
controller.
E
Correct or replace rubber hose.
By-pass valve is stuck in closed position.
E
Replace turbocharger assembly.
Controller diaphragm is broken.
E
TURBOCHARGER
TD27Ti
EM-119
Condition 3: Excessively high oil consumption, or exhaust shows pale blue smoke
Probable cause
Corrective action
Oil leak at the connection of lubricating oil passage.
E
Correct the connection.
Oil leak at oil seal of turbine.
E
Replace turbocharger assembly.
Oil leak at oil seal of compressor.
E
Worn journal or bearing.
E
Perform the following checks. If NG, replace turbocharger unit.
OIL AND WATER TUBES
Check tubes for clogging.
NEM180
SEM029F
TURBOCHARGER
TD27Ti
Inspection (Cont’d)
EM-120
ROTOR SHAFT
1. Check rotor shaft for smooth rotation.
2. Check rotor shaft for carbon deposits.
3. Measure rotor shaft runout.
Runout (Total indicator reading):
Standard
0.056 - 0.127 mm (0.0022 - 0.0050 in)
4. Measure rotor shaft end play.
End play:
Standard
0.013 - 0.097 mm (0.0005 - 0.0038 in)
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Do not allow wheels to turn when axial play is being mea-
sured.
SEM030F
SEM031F
SEM032F
SEM827D
TURBOCHARGER
TD27Ti
Inspection (Cont’d)
EM-121
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