Piper Navajo Chieftain PA-31-350 Service Manual page 103

NAVAJO CHIEFTAIN SERVICE MANUAL
TABLE III-I. INSPECTION REPORT
Nature of Inspection
Inspection time (hrs)
L R 50 100 500 1000
B. ENGINE GROUP (cont.)
10. Fill engine with oil as per lubrication chart. (Refer to Section II.)....................
11. Clean engine.....................................................................................................
12. Inspect condition of spark plugs. Clean and adjust gap per latest revision of
Textron Lycoming Service Letter No. 1042. .....................................................
NOTE:
If fouling of spark plugs has been apparent, rotate
bottom and top plugs.
13. Inspect spark plug cable leads ...........................................................................
14. Inspect spark plug cable leads and ceramics for corrosion and deposits............
15. Check cylinder compression. (Reference: AC43.13-1A.) .................................
16. Inspect cylinders for cracked or broken fins. (See Note 12.) ............................
17. Inspect rocker box covers for evidence of oil leaks. If found, replace gasket;
torque cover screws 50 inch-pounds. (See Note 11.) ........................................
18. Inspect wiring to engine and accessories. Replace damaged wires and clamps.
Inspect terminals for security and cleanliness. .......................................
19. Inspect ignition harnesses and insulators for high tension leakage and continuity.
20. Check magneto main points for clearance. (Set clearance at 0.016 inch.) ........
21. Check magneto retard points for proper retard angle (15°). Maintain clear-
ance at 0.016 ± 0.004 inch).................................................................................
22. Inspect magnetos for oil leakage and pressure test. (Refer to latest revision of
Textron Lycoming Service Letter No. 1308.).....................................................
23. Inspect breaker felts for proper lubrication. ......................................................
24. Inspect distributor blocks for cracks, burned areas or corrosion, and height of
contact springs. (See Note 13.)..........................................................................
25. Check magnetos to engine timing. (20
°
degrees BTC.) ....................................
26. Inspect D3200 pressurized (blue) magneto gears. (Refer to latest revision of
Textron Lycoming Service Bulletin No. 459.)....................................................
27. Overhaul or replace magnetos. (See Notes 14 and 15.).....................................
28. Inspect air cleaner screen for contamination. Remove and clean.as necessary.
29. Remove and clean fuel injector inlet line screen. Clean injector nozzles as
required. (Clean with acetone only.)..................................................................
30. Inspect condition of alternate air door and box and rigging per Service
Manual, Section VIII. (Refer to latest revision of Piper Service Bulletin No.
479.)....................................................................................................................
31. Inspect intake seals for leaks and clamps for tightness.....................................
32. Inspect condition of flexible fuel lines. (See Note 16.).....................................
33. Inspect fuel system for leaks.............................................................................
34. Inspect engine driven and electric fuel pumps for operation and pressure .
(Refer to Service Manual, Section IX.) (See Note 14.) .....................................
35. Replace hydraulic filter element. Check element for contamination. ...............
36. Inspect condition of hydraulic filter canister. Inspect thread area for cracks
and condition.....................................................................................................
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Revised: 3/31/94
Interim Revision: 12/30/94
INSPECTION
1E7