TEO-540-C1A Engine Maintenance Manual
© 2018 Avco Corporation. All Rights Reserved
72-20
November 2018
Page 183
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.
Table 3
Slinger Clearance at Point A
(Figure 89)
Figure 89
Clearance Between Crankshaft and Crankcase
Inches
Millimeters
0.002 to 0.007
0.051 to 0.178
Table 4
End Play Clearance at Point B
(Figure 89)
Inches
Millimeters
0.009 to 0.026
0.229 to 0.660
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
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.
CAUTION
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.
(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.)
