TEO-540-C1A Engine Maintenance Manual
72-20
© 2018 Avco Corporation. All Rights Reserved
Page 168
November 2018
TEO-540-C1A Engine Maintenance Manual
(3)
Clean the recess/crankcase bore (which has the groove for the crankshaft oil seal), use a
clean disposable lint-free cloth and any of the following cleaning solvents to remove oil,
sealant, and debris from the crankcase, especially the crankcase bore:
•
Methyl-Ethyl-Ketone (MEK)
•
Napasco SC-200
•
M-114.
•
Acetone
•
M-17
(4)
Locate and remove the internal spring from the solid-ring crankshaft oil seal to prevent
damage to the spring, seal, and potential injury (Figures 54 and 55).
Figure 54
Locating the Internal Spring
Figure 55
Internal Spring Removed
(5)
Open the spring:
(a)
Find the spring joining ends.
(b)
Hold the spring tightly in your left hand so it cannot turn (Figure 56).
(c)
Twist the spring and roll your fingers counter-clockwise with your right hand about
five turns to unthread and separate the spring ends.
Figure 56
Separating the Spring Threaded Ends
NOTICE:
There are two types of internal springs used in the solid-ring crankshaft oil seal.
One type has a hook on each end; the hooks are joined together. The other type
has threaded ends; one end will be screwed into the other end.
