Perkins 1206A-E70TTA, Руководство по эксплуатации и обслуживанию, Страница: 96 / 108

Engine Installed with High-
Pressure Turbocharger and Low-
Pressure Turbocharger
Illustration 61 g06279487
Typical example
The engine is equipped with a high-pressure
turbocharger (1) and a low-pressure turbocharger
(4). A regular visual inspection of both turbochargers
is recommended. If the turbocharger fails during
engine operation, damage to the turbocharger
compressor wheel and/or to the engine may occur.
Damage to the turbocharger compressor wheel can
damage the pistons, the valves, and the cylinder
head.
1. Ensure that the turbochargers are clean and free
from dirt before removing components for
inspection.
2. Remove the pipe from the high-pressure
turbocharger exhaust outlet and remove the air
intake pipe (3) to the turbocharger. Visually inspect
the piping for the presence of oil. Clean the interior
of the pipes to prevent dirt from entering during
reassembly.
3. Remove elbow (2) and check for the presence of
engine oil.
4. Check for obvious heat discoloration of the
turbocharger. Check for any loose bolts or any
missing bolts. Check for damage to the oil supply
line and the oil drain line. Check for cracks in the
housing of the turbocharger. Ensure that the
compressor wheel can rotate freely.
5. Check for the presence of oil. If oil is leaking from
the back side of the compressor wheel, there is a
possibility of a failed turbocharger oil seal.
The presence of oil may be the result of extended
engine operation at low idle. The presence of oil
may also be the result of a restriction of the line for
the intake air (clogged air filters), which causes the
turbocharger to slobber.
6. Inspect the bore of the housing of the turbine outlet
for corrosion.
7. Install the air intake pipe and the exhaust outlet
pipe to the turbocharger housing. Ensure that all
clamps are installed correctly and that all clamps
are tightened securely. For more information, refer
to Systems Operation, Testing, and Adjusting,
“Turbocharger - Inspect”.
i07313522
Walk-Around Inspection
Inspect the Tube of the Crankcase
Breather
Illustration 62 g06279493
Typical example
96 M0090743
Maintenance Section
Walk-Around Inspection