Fiori DB 460, Руководство по эксплуатации и обслуживанию

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SEBU8325-01 63
Maintenance Section
Engine Air Precleaner - Check/Clean
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Illustration 28
Typical service indicator
Observe the service indicator. The air cleaner
element should be cleaned or the air cleaner element
should be replaced when one of the following
conditions occur:
• The yellow diaphragm enters the red zone.
• The red piston locks in the visible position.
Test the Service Indicator
Service indicators are important instruments.
•
Check for ease of resetting. The service indicator
should reset in less than three pushes.
• Check the movement of the yellow core when the
engine is accelerated to the engine rated speed.
The yellow core should latch approximately at the
greatest vacuum that is attained.
If the service indicator does not reset easily, or if the
yellow core does not latch at the greatest vacuum,
the service indicator should be replaced. If the new
service indicator will not reset, the hole for the service
indicator may be restricted.
The service indicator may need to be replaced
frequently in environments that are severely dusty.
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Engine Air Precleaner -
Check/Clean
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Illustration 29
Typical example
(1) Wing nut
(2) Cover
(3) Body
Remove wing nut (1) and cover (2). Check for an
accumulation of dirt and debris in body (3). Clean the
body, if necessary.
After cleaning the precleaner, install cover (2) and
wing nut (1).
Note: When the engine is operated in dusty
applications, more frequent cleaning is required.
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Engine Mounts - Inspect
Note: The engine mounts may not have been
supplied by Perkins. Refer to the OEM information
for further information on the engine mounts and the
correct bolt torque.
Inspect the engine mounts for deterioration and for
correct bolt torque. Engine vibration can be caused
by the following conditions:
• Incorrect mounting of the engine
• Deterioration of the engine mounts
• Loose engine mounts
Any engine mount that shows deterioration should
be replaced. Refer to the OEM information for the
recommended torques.