Service difficulty report · Starter · Lancar LC41550FG

Difficulty date
February 26, 2010
Submitted
February 26, 2010
Operation
General aviation
Aircraft
N728SM
Make and model
Lancar LC41550FG
Aircraft serial
41087
Engine
Cont TSIO550A
Part
Starter
Part serial
2C5490901
Condition
Out Of Tolerance
Location
Engine
Part time
2 hours, 2 cycles
Stage of operation
IN
How discovered
V
Nature of condition
K
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

DURING REMOVAL OF THE STARTER AND THE O/H OF THE STARTER DRIVE ADAPTER IT WAS FOUND THAT THE NEWLY INSTALLED STARTER IS .015 SMALLER AT THE HOUSING FLANGE THAN THE FACTORY INSTALLED STARTER. THE STARTER DRIVE ADAPTER WAS OBSERVED TO BE LEAKING OIL WERE THE STARTER BOLTS TO THE ADAPTER. THE O-RING SEAL IS NOT CAPABLE OF SEALING THE AREA BETWEEN THE STARTER AND THE ADAPTER WITH THIS MUCH CLEARANCE. MEASURED A FACTORY STARTER AND 4 OTHER STARTER TYPES AND FOUND THE DIFFERENCE BETWEEN THE ADAPTER AND THE OTHER STARTERS TO BE ONLY .004 WHICH WOULD ALLOW THE O-RING TO DO IT'S JOB.