Excessive Bearing Wear - Inspect; Excessive Engine Oil Consumption - Inspect; Increased Engine Oil Temperature - Inspect - Perkins 1106A-70T Operation Manual

UENR0617
Illustration 35
End play measurement of the rotor
5. Measure the end play of the rotor with a straight
edge and a feeler gauge (3).
6. Clean the top face of the oil pump and the bottom
face of the cover. Install the cover on the oil pump.
Install the oil pump on the engine.
Excessive Bearing Wear -
Inspect
When some components of the engine show bearing
wear in a short time, the cause can be a restriction in
an oil passage.
An engine oil pressure indicator may show that there
is enough oil pressure, but a component is worn due
to a lack of lubrication. In such a case, look at the
passage for the oil supply to the component. A
restriction in an oil supply passage will not allow
enough lubrication to reach a component. This will
result in early wear.
Excessive Engine Oil
Consumption - Inspect
Engine Oil Leaks on the Outside of
the Engine
Check for leakage at the seals at each end of the
crankshaft. Look for leakage at the gasket for the
engine oil pan and all lubrication system connections.
Look for any engine oil that may be leaking from the
crankcase breather. This can be caused by
combustion gas leakage around the pistons. A dirty
crankcase breather will cause high pressure in the
crankcase. A dirty crankcase breather will cause the
gaskets and the seals to leak.
This document has been printed from SPI2. NOT FOR RESALE.
Engine Oil Leaks into the
Combustion Area of the Cylinders
Engine oil that is leaking into the combustion area of
the cylinders can be the cause of blue smoke. There
are several possible ways for engine oil to leak into
the combustion area of the cylinders:
• Failed valve stem seals
• Leaks between worn valve guides and valve stems
• Worn components or damaged components
(pistons, piston rings, or dirty return holes for the
engine oil)
g00938799 • Incorrect installation of the compression ring and/
or the intermediate ring
• Leaks past the seal rings in the turbocharger shaft
• Overfilling of the crankcase
• Wrong dipstick or guide tube
• Sustained operation at light loads
Excessive consumption of engine oil can also result if
i01126690
engine oil with the wrong viscosity is used. Engine oil
with a thin viscosity can be caused by fuel leakage
into the crankcase or by increased engine
temperature.
Increased Engine Oil
Temperature - Inspect
Look for a restriction in the oil passages of the oil
cooler. The oil temperature may be higher than
normal when the engine is operating. In such a case,
the oil cooler may have a restriction.
i02414692
35
Lubrication System
i02414679