Fiat Kobelco EX355 Tier2, Technical Manual

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EX355 W5-7-5
ENGINE INDUCTION
Inspection and Repair
Turbocharger damage or maladjustment results in a
reduced volume of air to the engine. Engine perform-
ance suffers.
If there is a marked drop in engine performance, first
check the engine. If the engine appears normal,
check the turbocharger.
If excessive wear or damage is discovered during
turbocharger inspection, the appropriate parts must
be adjusted, repaired, or replaced. Contact your near-
est
FIAT KOBELCO Dealer to make arrangements
for servicing.
ROTOR SHAFT AXIAL PLAY
1. Install a dial indicator to the turbine housing as
shown in the illustration.
2. Move the shaft back-and-forth to measure the
rotor shaft axial play. Note the total indicator read-
ing (TIR).
Rotor shaft axial play:
Standard: 0.06 - 0.09 mm (0.0024 - 0.0035 in)
Limit: 0.11 mm (0.00433 in)
If the measured value exceeds the specified limit, the
rotor shaft must be replaced.
ROTOR SHAFT RADIAL PLAY
1. Invert the turbocharger so that the turbine exhaust
inlet flange is facing up.
2. Install a dial indicator to the turbine housing as
shown in the illustration.
3. Measure the rotor shaft axial play. Note the total
indicator reading (TIR).
Rotor shaft radial play
Standard: 0.10 - 0.17 mm (0.0039 - 0.0067 in)
Limit: 0.205 mm (0.00807 in)
If the measured value exceeds the specified limit, the
rotor shaft must be replaced.
SM7339
SM7340