Service difficulty report · Valve Guide

Difficulty date
April 9, 2001
Submitted
April 9, 2001
Operation
General aviation
Engine
Cont IO520F
Part
Valve Guide
Part number
A20TK99
Part serial
15130
Condition
Stuck
Location
Cylinder
Part time
500 hours
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

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

What was found

RECEIVED 2 EA CYLINDERS FOR OVERHAUL UPON DISMANTLING WE FOUND BOTH EXHAUST VALVES STUCK . WE HAD TO DRIVE THEM OUT WITH A DRIFT. SN NR 15130 EXHAUST GUIDE SIZE BOTTOM .433 TOP .4365 SN NR 15131 EXHAUST GUIDE SIZE BOTTOM .433 TOP .437