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Group 25 Inlet and Exhaust System
186
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Turbine wheel and housing clearance
Set a dial gauge on the end face of the shaft & turbine
wheel. Read the dial gauge indication while moving
the shaft & turbine wheel in the axial direction.
If the dial gauge indication deviates from the assem-
bly standard, disassemble and locate the cause of the
problem.
Clearance turbine wheel and housing, mm [in.]
Standard Clearance .. 0.29–0.91 [0.01142–0.03583]
Install the compressor wheel
Install the compressor wheel. Apply Moly Disulfide to
the threads of the lock nut, then tighten to the speci-
fied torque.
Lock nut tightening method
1. Tighten the lock nut to torque of 49 N
[36 lbf
ft], then loosen it completely.
●
2. Retighten to a snug torque of 14.7 N
[10.8 lbf
ft], then turn another 80±3°.
●
Shaft & turbine wheel axial play
Set a dial gauge on the end face of the shaft & turbine
wheel. Measure the amount of play while moving the
compressor wheel in the axial direction.
If the measured play deviates from the standard val-
ue, disassemble and locate the cause of the problem.
Shaft & turbine wheel axial play, mm [in.]
Assembly Standard ... 0.075–0.135 [0.00295–0.00531]
m (5 kgf
m)
●
●
m (1.5 kgf
m)
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●
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