Lycoming TEO-540-C1A Maintenance Manual page 223

TEO-540-C1A Engine Maintenance Manual
TEO-540-C1A Engine Maintenance Manual
(2) Clean the both ends of the split ring oil
seal with ethyl alcohol.
NOTICE: The split oil seal has a finger
spring bonded to the seal in the
inner groove of the seal lip
(Figure 108). Use care not to
kink or distort the finger spring
when installing the split oil seal
on the crankshaft.
(3) Face the propeller end of the crankshaft and assemble the split oil seal around the
crankshaft with the split at the 1:00 o'clock position (11:00 o'clock position for left-hand
rotation engines) with the front face of the seal toward the crankshaft propeller flange.
NOTICE: If Pliobond
Cure Sealant, refer to the manufacturer's instructions for application details and
cure time.
(4) Apply a coat of Dow Corning
and press the ends of the seal together.
(5) Use ethyl alcohol and disposable wipes to clean the outer surface of the split oil 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.
(6) 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.
(7) Work the sealant into the grooves of the split oil seal (Figure 105).
(8) Press the split oil seal firmly and evenly against the seat in the crankcase bore. Apply
pressure all around the seal until it is firmly seated in the bore.
(9) Spread the excess sealant smoothly over the oil seal and crankcase (Figure 106)
(10) Do not allow any sealant to contact the crankshaft or the seal lip. Wash the seal lip and
crankshaft area with acetone and a cotton swab if contamination occurs. (Figure 104)
(11) Let the Dow Corning
NOTICE: Refer to the latest revision of Service Instruction No. SI-1324 for any additional
details.
© 2018 Avco Corporation. All Rights Reserved
November 2018
®
#20 or Pliobond
®
737 Neutral Cure Sealant to one end of the split oil seal
DO NOT APPLY MEK SOLVENT TO THE SPLIT 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 SPLIT OIL SEAL.
SEALANT AND INSTALLING THE OIL SEAL (FIGURES 103 TO 106).
®
737 Neutral Cure Sealant to cure for 24 hours.
Finger Spring Bonded to the Split Oil Seal
®
#25 is substituted for Dow Corning
Figure 108
®
737 Neutral
Page 193
®
737
72-20