Vedeneyev M-14P, Maintenance Manual

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OPERATIONS AND TECHNICAL REQUIREMENTS CORRECTIVE
ACTIONS
CH
ECKED BY
opening the breaker points which corresponds -to supply of spark to cylinder No. 4 in
operation.
7. Carefully remove the magneto from the engine, insert the adjustment screw, tighten and
lock the nuts of the coupling bolt and adjustment screw of the coupling, precluding turning of the
latter*
8. Place a gasket under the magneto flange, install the magneto on -the engine according
to Item 5.
9. Insert a feeler gauge, 0.03 mm thick, between the breaker points and turn the airscrew
shaft through 10 to 15° opposite to the direction of rotation. Then rotate the airscrew shaft in its
normal direction to check the moment of breaker point opening initial moment by the scale applied
to the airscrew shaft flange. She breaker points should start opening at an airscrew shaft turning
angle of 14°30' to 16° before TDC. The breaker point gap should be 0.25 to 0.35 nun,
10. If normal adjustment is not achieved, adjust sparking moment by turning the magneto
on the studs extending through the slots in the magneto flange,
11. Finally secure the adjusted magneto on the engine.
12. Install the second magneto similarly to the first one by performing operations under
Items 5, 6, 7, 8, 11.
13. Insert a feeler gauge, 0*03 mm thick, between the breaker points and turn the airscrew
shaft opposite to its normal direction through 10 to 15°. Then rotate the airscrew shaft in its normal
direction, check synchronous beginning of point opening in both magnetos. If there is no
synchronism, turn the second magneto on its studs extending through its flange slots to ensure
synchronous opening of the points. Finally secure the adjusted magneto on the engine.