Troubleshooting Information
1. General
The table below includes the possible defects of the reciprocating engine. If you have the trouble
listed in the Trouble column, read across to the Possible Cause column. Then do the repair in the
Repair column.
Refer to the applicable Aircraft
Maintenance Manual.
Look for signs of leaks at all
system joints. Repair or replace
defective components.
Bleed the cooling system.
Radiator matrix blocked by
foreign objects.
Remove foreign objects and
clean the radiator matrix.
Thermostat valve defective.
Gearbox oil temperature high.
Not enough oil in the gearbox.
Find the reason for the loss of
gearbox oil and correct the
problem. Fill the gearbox with
oil. Refer to the AFM for
approved oils.
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