#Timing a slick magneto install#

Be sure that the lights for both sets of points come on points open, within the prescribed timing position.Д«oth right and left sets of breaker points should open at the same instant, proper magneto-to-engine timing exists, and all phases of magneto operation are synchronized. Move the propeller one blade opposite the direction of rotation and then, while observing the timing light, move the propeller in the direction of rotation until the prescribed number of degrees ahead of top dead center is reached. After completing this adjustment, tighten the mounting nuts. This is done to determine that the points just opened. With the light and ignition switch turned on, rotate the magneto assembly first in the direction of rotation and then in the opposite direction. Reconnect the timing light to the magneto and breaker points. The nuts must not be tight enough to prevent the movement of the magneto assembly when the magneto mounting flange is tapped with a mallet. Install the magneto attaching nuts on the studs and tighten slightly.

#Timing a slick magneto install#

Then, install the magneto in position again and repeat the previous check for point opening. 1 cylinder, move the magneto out of position far enough to permit turning the magneto drive shaft. If the slots in the mounting flange of the magneto do not permit sufficient movement to effect breaker point opening for the No. With the engine still in the firing position, the magnetos should be timed by moving them in the flange slots until the breaker points in the magneto just open. It should be installed in the middle of its slotted flange to allow for fine timing of the magneto to the engine. 1 cylinder as indicated by the alignment of the reference marks for the magneto, install the magneto drive into the engine drive. While holding the magneto drive in the firing position for the No. With the engine set at a prescribed number of degrees ahead of true top dead center on the compression stroke and with final movement of the engine stopped in the direction of normal rotation, the magneto can be installed on the engine. Set the engine crankshaft at the prescribed number of degrees ahead of true top dead center as specified in the applicable manufacturerвЂ™s instruction, usually using the timing marks on the engine. This can be determined by holding a thumb over the spark plug hole until the compression air is felt. 1 piston is coming up on the compression stroke. Pull the propeller through in the direction of rotation until the No. Remove the most accessible spark plug from the No. The chamfered tooth should line up (reference timing mark for the magneto) in the middle of the timing window. This is done by checking and adjusting the ignition points to open at the E-gap position. The magneto must be timed by first adjusting or checking the internal timing with the magneto off the engine. The engine is usually timed by using the No. The engine crankshaft position where the spark occurs. The internal timing of the magneto, including breaker point adjustment, which must be correct to obtain maximum potential voltage from the magneto.Дў. When replacing magnetos on aircraft engines, two factors must be considered:ДЎ.