Perkins New 1000 Series, Workshop Manual, Page: 148 / 290

18
148 Workshop Manual, TPD 1350, issue 3
New 1000 Series
A turbocharger (A), is fitted between the exhaust and
induction manifolds. The turbocharger is driven by
exhaust gases and passes air to the engine at more
than atmospheric pressure. It is lubricated by oil from
the main gallery. The oil passes through the bearing
housing of the turbocharger and returns to the
lubricating oil sump; arrows are included on the
illustration to indicate the typical oil flow.
Some turbochargers are fitted with a waste-gate unit
(B). This unit, which is controlled by boost pressure,
allows some of the exhaust gases to bypass the
turbine rotor at higher engine speeds. With this
arrangement, the turbocharger can be designed to be
more effective at lower engine speeds. A waste-gate
guard (A1,
page 148 ) is fitted to protect the actuator
rod (A2, page 148 ) of some engines.
Always use the manufacturers instructions and
specialist assistance to fit the service kit for the
turbocharger.
1
A
A0181
2
B
A0180
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