Crankcase Assembly - Lycoming TEO-540-C1A Maintenance Manual

TEO-540-C1A Engine Maintenance Manual
TEO-540-C1A Engine Maintenance Manual
(4) Use a feeler gage to measure the end play clearance with the crankcase thrust at Point B
in Figure 89. Refer to the limits in Table 4. If the end play clearance is not within the
limits in Table 4, examine the crankcase and/or crankshaft for wear or damage. Replace a
worn or damaged component.
Slinger Clearance at Point A
(Figure 89)
Inches
0.002 to 0.007
End Play Clearance at Point B
(Figure 89)
Inches
0.009 to 0.026

24. Crankcase Assembly

NOTICE: Before assembly, make sure the crankcase has been cleaned per the "Crankcase
Cleaning" procedure in Chapter 05-30 in this manual. If a crankcase stud is bent,
broken, damaged, loose, rusted, corroded, or cannot be cleaned, refer to the "Stud
Replacement" procedure in Appendix A.
A. Assemble the Crankcase Halves
CAUTION
CAUTION
(1) Apply a thin layer of non-hardening gasket material such as POB #4 Perfect Seal gasket
compound or equivalent to the outside mating surfaces of each crankcase half (darker
area shown in Figure 90.)
© 2018 Avco Corporation. All Rights Reserved
November 2018
Table 3
Millimeters
0.051 to 0.178
Table 4
Millimeters
0.229 to 0.660
THE CRANKCASE HALVES ARE A MATCHED SET, IF ONE HALF IS
CRACKED OR DAMAGED BOTH HALVES MUST BE REPLACED.
ONLY LYCOMING-APPROVED SEALANTS ARE TO BE USED
DURING CRANKCASE ASSEMBLY. DO NOT USE ANY OTHER NON-
APPROVED SEALANT SINCE IT COULD CAUSE A LOSS OF
CLAMPING FORCE AND/OR TORQUE.
IN THE NEXT STEP, DO NOT GET THE GASKET COMPOUND IN THE
BORE OF THE NOSE SEAL OR IN ANY CRANKCASE BORE. IF NON-
HARDENING GASKET COMPOUND GETS INTO THE NOSE SEAL
BORE OR ANY CRANKCASE BORE, CAREFULLY REMOVE THE
GASKET COMPOUND WITH A SOFT CLOTH AND SOLVENT
(ACETONE, MEK, OR EQUIVALENT). DO NOT GET MEK ON THE
CRANKSHAFT OIL SEAL.
Figure 89
Clearance Between Crankshaft and Crankcase
72-20
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