Service difficulty report · Cylinder

Difficulty date
April 8, 2003
Submitted
May 6, 2003
Operation
General aviation
Engine
Lyc TIO540A2B
Part
Cylinder
Part number
SL54002NLC
Condition
Faulty
Location
Engine
Stage of operation
IN
How discovered
9
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

(AUS) CYLINDER ASSY INLET VALVE SPRING RETAINER INCORRECT PART. EXHAUST VALVE SPRING RETAINER FITTED. SIX NEW CYLINDERS WERESUPPLIED&IT FOUND THAT NOT ONLY DID PREVMENTIONED CYLINDER HAVE WRONG SPRING RETAINER FITTED BUT ALLCYLINDERS HAD AN AMOUNT OF ALUMINIUM SWARF IN THE ROCKER BOX AREA WHICH RESULTED IN HAVING TO REMOVE ALL SPRINGS&VALVES FROMCYLINDERS TO WASH THEM OUT. ONCE SPRINGS WERE REMVD ITFOUND THAT INCORRECT INLET LOWER SPRING SEATS HAD BEEN FITTED TO ALL CYLINDERS (EXHAUST LOWER SPRING SEATS HAD BEEN FITTEDINSTEAD). ON FURTHER INSPECTION IT FOUND ON ONE CYLINDER THAT THERE WAS RAISED BURRS AROUND CYLINDER BASE STUD HOLES. THEREFORE BEING NARROW DECK CYLINDERS THEY HAVE HOLD DOWN PLATES FITTED.WHEN A