b. Main Gear Trunnion Assembly Dye-Penetrant Inspection
CA
UTION: MAIN GEAR TRUNNION ASSEMBLIES OTHER THAN P/N’S 67926-030, 67926-
032, 67926-040, OR 67926-042 (LEFT) AND 67926-031, 67926-033, 67926-041, OR
67926-043 (RIGHT) (EACH EMBOSSED WITH FORGING NUMBER 02599-2)
MUST BE REPLACED UPON ACCUMULATING 2500 HOURS TIME-IN-
SERVICE.
CA
UTION: IF TIME-IN-SERVICE FOR MAIN GEAR TRUNNION ASSEMBLIES OTHER
THAN P/N’S 67926-030/-032/-040/-042 (LEFT) AND 67926-031/-033/-041/-043
(RIGHT) (EACH EMBOSSED WITH FORGING NUMBER 02599-2) CANNOT BE
DETERMINED, THEN THOSE MAIN GEAR TRUNNION ASSEMBLIES MUST
BE REPLACED BEFORE FURTHER FLIGHT.
For airplanes which have not installed new main gear trunnion assemblies P/N’s 67926-030,
67926-032, 67926-040, or 67926-042 (Left) and 67926-031, 67926-033, 67926-041, or 67926-043
(Right) (each embossed with forging number 02599-2); and have accumulated 500 hours time-in-
service on one or both of the installed main gear trunnion assemblies; perform the following
inspection each 100 hours between 500 and 2000 hours time-in-service, and each ten (10) hours
between 2000 and 2500 hours time-in-service:
NO
TE: Installation of main gear trunnion assemblies P/N’s 67926-030, 67926-032, 67926-040, or
67926-042 (Left) and 67926-031, 67926-033, 67926-041, or 67926-043 (Right) (each
embossed with forging number 02599-2) at any time eliminates these repetitive inspection
requirements. See Seneca II Parts Catalog for specific application for individual airplanes.
1. Carefully clean the trunnion housing of dirt and paint in the affected area.
NO
TE: Upon reaching 2000 hours time-in-service, permanently remove paint and maintain an
alodined surface in the area of inspection to facilitate the ten hour repetitive
inspection.
2. Inspect the housing for cracks with a suitable dye-penetrant inspection method at the lower end
of the fillet (see Figure 7-5b).
3. Replace the trunnion if cracks are detected.
4. If no cracks are detected, repaint the trunnion (500 thru 2000 hours time-in-service only) and
return to service.
5. Make an appropriate logbook entry documenting this inspection.
PIPER SENECA II SERVICE MANUAL
01/01/09 VII - LANDING GEAR AND BRAKE SYSTEM
1K11
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