Operator`s manual

21 20 19 18
1. Front
Main Bearing
Insert
2. Lifting Strap
3. Oil Relief Valve Plug
(Field Conversion)
4. Ball
5. Spring
6. Washer
7.
Spacer
8. Gasket
Section 7
OVERHAUL
MANUAL
Crankcase, Crankshaft,
and Reciprocating Parts
LYCOMING DIRECT
DRIVE AIRCRAFT
ENGINES
22
15
23 10
13
24
18. Crankshaft Oil Seal
19. Retaining Plate
20. Washer
21. Screw
22.
Main Bearing
Insert
23. Oil Relief
Valve
Assy.
(Non-adjustable)
24. Oil Relief Valve Assy.
(Adjustable)
9. Oil Relief Valve Plug
10. Oil Relief Valve Screw
11. Oil Relief
Valve
Plug
12. Oil Relief
Valve
Insert
13. Oil Relief Valve Cap
14. 3/8-24 NF-3 Nut
15. Spring Pin
16. Oil
Relief Valve
Sleeve
17. Piston Cooling Nozzle
Figure 7-1.
Typical Six Cylinder
Crankcase
7-2
Revised
January,
1971