TM 5-3895-382-24
10.
Lubricating oil is leaking from the oil supply line.
The oil supply line must be repaired or replaced.
11.
A restriction exists in the lubricating oil filter.
Clean the oil filter base and the housing for the oil filter.
Check the operation of the bypass valve in the oil filter
base. Replace the oil filter.
12.
The engine stopped too soon from a high load condition.
Check the following components for correct operation or
damage:
compressor impeller of the turbocharger
coolant system
fuel injection pump
air/fuel ratio control
wastegate
valve lash
fuel injector nozzles
Problem 14
The turbocharger makes excessive noise.
Probable Cause
1.
The element of the air filter is dirty.
The element must be cleaned or replaced.
2.
The element of the air filter is not sealed correctly. A
connection between the air filter and the turbocharger is
loose.
Inspect the element of the air filter and the air supply
line to the turbocharger for correct installation.
3.
A restriction exists in the tube between the air filter and
the turbocharger.
The component must be repaired or replaced.
4.
An air leak or a restriction exists in the line between the
turbocharger and the intake manifold.
The component must be repaired or replaced.
5.
A restriction exists in the exhaust system.
The component must be repaired or replaced.
6.
The turbocharger is loose or the clamps and bolts on
the turbocharger are loose.
Correctly position the turbocharger and tighten the
damps and bolts.
7.
The intake manifold is cracked, loose or the flange is
distorted.
The intake manifold must be repaired or replaced.
8.
The exhaust manifold is cracked, loose, or the flange is
distorted.
The exhaust manifold must be repaired or replaced.
9.
The flow of the lubricating oil is delayed to the
turbocharger when the engine is started. Insufficient oil
flows to the turbocharger when the engine is running.
Check the following components for correct operation:
oil pump
the engine oil bypass valve
the bypass valve in the oil filter base
oil filter
viscosity of the oil
restrictions in oil lines
10.
The lubricating oil is dirty.
Drain the lubricating oil. Install the correct type of
lubricating oil. Replace the oil filter.
11.
The incorrect type of lubricating oil is installed.
Drain the lubricating oil. Replace the oil filter. Install the
correct type of lubricating oil.
12.
The oil supply line from the oil pan is restricted.
The oil supply line must be repaired or replaced.
13.
The turbine housing is damaged or restricted.
The turbine housing must be repaired or replaced.
14.
The bearings of the turbocharger are worn.
Replace the bearings.
15.
Excessive dirt exists in the compressor housing.
Clean the compressor housing.
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