9-4 TURBOCHARGER
Ii-l
@ INSPECTION AND REPAIR
Magnet base
-.- - $-
Push and
bull
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c
.
.
~~~~~~a~d
Oil inlet
If excessive wear or damage is discovered during
inspection,
the appropriate parts must be adjusted,
repaired, or replaced. Damage or improper adjustment
of the turbocharger will inhibit sufficient air flow to the
engine, preventing it from delivering full performance.
If the engine demonstrates a significant drop in perfor-
mance, check for engine damage or wear. If no signifi-
cant engine damage or wear can be found, it is likely
that the turbocharger is at fault.
When reduced performance is the result of a faulty tur-
bocharger, contact your nearest IHI or Mitsubishi Service
Center for the proper repairs.
The following is primarily a description of the particu-
larly important rotor shaft end play, and bearing clear-
ante standard and limit values.
Rotor Shaft Axial Play Measurement
1) Install a dial indicator on the turbine housing as
illustrated.
2) Use the dial indicator to measure
axial play with moving the shaft
Read the total indicator reading (TIR
the rotor shaft
push and pull.
1
.
mm (in)
I
IHI RHE6
I
Limit
I
-Rotor Shaft Axial Play TIR
0.10 (0.0039)
3) If the measured value exceeds the specified limit the
shaft must be replaced.
Rotor Shaft Radial Play Measurement
1)
Turn over the turbocharger with the turbine exhaust
inlet flange facing up.
2) Install a dial indicator to measure the rotor shaft
radial play.
3) Use the dial indicator to measure the play. Read the
TIR .
mm (in)
I
IHI RHis
I
Limit
I
1 Rotor Shaft Radial Play TIR )
0.19 (0.0075)
I
4) If the measured value exceeds the specified limit
replace the shaft.
(3
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