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YO-233-B2A Engine Maintenance Manual
TEO-540-A1A Engine Maintenance Manual
NOTICE: Obey and follow inspection checklists and instructions in this chapter in addition to
maintenance guidelines from the airframe manufacturer or component manufacturers.
NOTICE: Do not exceed inspection intervals by more than 10 hours.
Visual Inspection
1.
A. Complete the visual inspection, usually with the engine installed in the aircraft, before each
routine 50, 100, 400, 500, and 1000-hour inspection and every time you service or do
maintenance on an engine.
WARNING
B. Required tools:
— Basic aviation mechanic's tools
— Flashlight
— Mirror.
C. Complete the visual inspection as follows:
(1)
Set all ignition and electrical switches to the OFF position.
(2)
Remove the engine cowling from the aircraft for access to the engine and its
compartment.
CAUTION
(3)
Look for unwanted dirt, dust, volcanic ash, sand, or particles on the engine and in its
compartment. Remove any unwanted materials. The engine and nacelle must be clean
and free of all dirt and unwanted materials.
(4)
Examine the cowling, engine and its compartment for evidence of fluid leaks, residues,
or discoloration. Identify and correct the cause(s) of any leak or residue before flight
and complete all of the necessary repairs to make sure the engine is operating correctly.
© 2021 Avco Corporation. All Rights Reserved
February 2021
05-20 - TIME LIMITS / MAINTENANCE CHECKS –
SCHEDULED MAINTENANCE CHECKS
BEFORE ANY ENGINE INSPECTION OR SERVICE PROCEDURE,
MAKE SURE THE IGNITION SWITCH IS SET TO OFF AND THAT ALL
POWER TO THE ENGINE IS DISCONNECTED. ENSURE ALL
OBJECTS/PERSONNEL ARE CLEAR OF THE PROPELLER'S
ROTATIONAL ARC. IF POWER IS ON, A LOOSE OR BROKEN WIRE
CAN CAUSE THE ENGINE TO START AND THE PROPELLER TO
TURN WHICH CAN LEAD TO DEATH OR SERIOUS INJURY OR A
PROPELLER STRIKE.
IF VOLCANIC ASH IS SUSPECTED ON THE ENGINE, DO NOT
TOUCH IT WITH BARE HANDS OR GET IT IN YOUR EYES.
WEAR PERSONAL PROTECTIVE EQUIPMENT. DO NOT USE
WATER TO RINSE IT OFF. THE VOLCANIC ASH CAN CONTAIN
ACIDIC COMPOUNDS WHICH MUST NOT BE INHALED OR
TOUCHED SINCE IT CAN CAUSE INJURY. REFER TO THE
"VOLCANIC ASH REMOVAL" PROCEDURE IN CHAPTER 05-30.
05-20
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