Crankshaft Oil Seal Installation - Lycoming TEO-540-C1A Maintenance Manual

TEO-540-C1A Engine Maintenance Manual
TEO-540-C1A Engine Maintenance Manual

27. Crankshaft Oil Seal Installation

NOTICE: If a solid-ring crankshaft oil seal (Figure 53) is not already installed on the crankshaft a
solid-ring crankshaft oil seal or split oil seal (Figure 52) can be installed after the
crankcase is assembled.
A. Install the solid-ring crankshaft oil seal in the crankcase as follows:
(1) Install a solid-ring crankshaft oil seal on the crankshaft per "Solid-Ring Crankshaft Oil
Seal Installation".
(2) Use solvent and wipe excess grease from the crankshaft flange.
CAUTION
(3) Use ethyl alcohol and disposable wipes to clean the outer surface of the seal and the
crankcase seal bore recess. Make sure nothing comes in contact with the cleaned surfaces.
CAUTION USE A BRUSH AND BUTYL RUBBER GLOVES WHEN APPLYING
NOTICE: In the next step, do not allow any sealant to contact the crankshaft or the seal lip
(Figure 104). If any sealant gets on the crankshaft, use acetone to remove all
traces of sealant.
If Pliobond
Cure Sealant, refer to the manufacturer's instructions for application details and
cure time.
(4) Use a brush and wear butyl rubber gloves to apply a liberal coating of Dow Corning
Neutral Cure Sealant to the outside diameter of the oil seal (Figure 103) to allow the
excess sealant to squeeze out between the crankcase and the oil seal when the oil seal is
installed.
Figure 103
Apply the Sealant to the Oil Seal
© 2018 Avco Corporation. All Rights Reserved
November 2018
DO NOT APPLY MEK SOLVENT TO THE CRANKSHAFT OIL SEAL
SINCE MEK CAN CAUSE THE SEAL TO DETERIORATE. BE SURE
THAT ALL TRACES OF CLEANING SOLVENT, OIL AND SEALANT
ARE REMOVED PRIOR TO INSTALLATION OF A NEW
CRANKSHAFT OIL SEAL.
SEALANT AND INSTALLING THE OIL SEAL (FIGURES 103 TO 104).
®
#20 or Pliobond
®
#25 is substituted for Dow Corning
Figure 104
Apply the Sealant Only on
the Outer Surface of the Oil Seal
®
737 Neutral
®
737
72-20
Page 191