Table of Contents
Advertisement
YO-233-B2A Engine Maintenance Manual
TEO-540-A1A Engine Maintenance Manual
Guidelines for Particle Quantity and Size on Oil Filter or Oil Suction Screen
1 to 9 pieces of metal (1/16 in. (1.2 mm)) diameter or less)
10 to 20 pieces of shiny flake-like, non-magnetic metal (1/16 in. (1.2
mm)) diameter or less)
10 or fewer short hair-like pieces of magnetic metal
20 to 40 pieces of shiny flake-like non-magnetic metal
45 to 60 small pieces of shiny flake-like, nonmagnetic metal
Pieces of metal that are chunks, greater than 3/16 in. (4.8 mm) or chips
smaller than chunks
NOTICE: A mixture of magnetic and nonmagnetic material can
indicate valve or ring and piston failure.
NOTICE: Remove the bottom spark plugs to identify a non-
conforming cylinder.
1/4 teaspoonful or more of nonmagnetic plating with or without a
copper tint, could vary in sizes
1/4 teaspoonful or more of nonmagnetic plating with or without a
copper tint, 1/16-inch or larger size could indicate bearing damage
Pieces of shiny flake-like, nonmagnetic metal (larger than 1/16 inch in
diameter) with no copper tint. (Possible indication of incorrect propeller
operation.)
1/4 teaspoonful of nonmagnetic brass or copper colored metal that
appears coarse like sand
1/2 teaspoonful of more of metal
© 2021 Avco Corporation. All Rights Reserved
February 2021
Table 4
Condition
Corrective Action
(Table 5)
Continue to operate the
engine until the next
scheduled oil change
Corrective Action 1
Corrective Action 1
Corrective Action 2
Corrective Action 3
Corrective Action 4
Corrective Action 2
Corrective Action 4
Corrective Action 4
Corrective Action 4
Corrective Action 4
12-10
Page 69
Advertisement
Table of Contents
