Lycoming TEO-540-C1A Maintenance Manual page 200

(10) Install the internal spring as follows:
(a) Position the spring between the seal and the oil slinger.
(b) Firmly hold the spring ends, one in each hand, and gently stretch the spring around
the crankshaft behind the installed solid ring crankshaft oil seal.
(c) Twist the right side of the spring counter-clockwise three turns and hold.
(d) Twist the left side of the spring clockwise three turns and hold.
(e) Join the two spring ends together. Gently release the tension allowing the spring ends
to thread into each other locking the spring together. Let the spring relax and rest
behind the seal. The spring must be a continuous circle around the crankshaft with no
kinks or twists.
(f) Work the spring into position in the groove (open portion) in the rear side of the solid-
ring crankshaft oil seal.
(g) Ensure the spring is not damaged and is seated completely in the internal groove of
the solid-ring crankshaft oil seal.
(11) Use ethyl alcohol and disposable wipes to clean the outer surface of the seal and the
crankcase seal bore recess.
This oil seal installation procedure is completed after the crankcase halves are joined together.
Refer to the latest revision of Service Instruction No. 1324 for any new details.
E. Connecting Rod Installation
NOTICE: Each connecting rod is identified by a letter (A, E, S, etc.), stamped on the edge of
the connecting rod beam, as a designation for weight class. All of the connecting
rods installed on the crankshaft must be of the same weight class, except "S" weight
rods (service rods) can be used with either "A" or "E" weight rods depending on
parts availability.
(1) Ensure that all of the
connecting rods have
the same weight class
letter.
(2) Apply specified
lubricant to the
connecting rod and
bearing inserts per the
latest revision of
Service Instruction No.
SI-1059 where shown
in Figure 60. Different
lubricants are used on
the various areas on the
connecting rod and
bearing surfaces.
72-20
Page 170
TEO-540-C1A Engine Maintenance Manual
TEO-540-C1A Engine Maintenance Manual
Figure 60
Connecting Rod Assembly Lubrication
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November 2018