Yanmar 6LPA-STP2, Руководство по обслуживанию

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TURBOCHARGER
6LPA Service Manual 9-11
Turbocharger
12/05
© 2007 Yanmar Marine International
Periodic Inspection
Inspection Intervals
Periodically inspect the turbocharger for damage
and overall condition. The inspection interval may
vary due to operating conditions. Refer to the table
below as guideline when operating under normal
conditions.
Inspection Procedure
Running of Turbine Shaft
Inspect the turbine shaft operation by listening for
any abnormal sounds during operation. Use a
listening bar to help diagnose any potential
problems. Solidly position the end tip of the bar
against the turbocharger case and raise the engine
speed gradually. If high pitch sounds are generated
at intervals of 2 to 3 seconds, abnormal operation is
evident and a rotational problem may be present.
The bearing or rotor may be defective, and cause
for turbocharger replacement or overhaul.
Inspection of Turbine Shaft Play
Remove the turbocharger from the engine and
inspect the turbine shaft axial and radial play
following the procedures below.
After removing the turbocharger from the engine,
always cover the oil inlet and outlet ports with tape.
• Turbine Shaft Axial Play
• Service Standard: 0.06 to 0.09 mm (0.002 to
0.004 in.)
• Wear Limit: 0.11 mm (0.004 in.)
Note: Move the turbine shaft in an axial
direction (Figure 9-4, (5)).
Figure 9-4
Figure 9-4
1 – Oil Inlet
2 – Dial Indicator
3 – Magnet Base
4 – Turbine Wheel Chamber
Inspection Interval
Inspection
Item
Every 6
months
or 1,500
hours
Every 12
months
or 3,000
hours
Every 24
months
or 6,000
hours
Rotation of
turbine shaft
O
Play of turbine
shaft
O
Overhaul and
inspection
O
(2)
( 3 )
(4)
(5)
00052 3 7
(1)