Piper ARROW III, Руководство по обслуживанию

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Figure 8-13. Rotor Holding Tool Installed Figure 8-14. Timing Kit Installed
8-38. MAGNETO TIMING PROCEDURE (INTERNAL TIMING). When installing or adjusting breaker
points and before timing the magneto to the engine, it is important that the internal timing of the magneto be
correct. The recommended method of checking the internal timing of the magneto is to use the Bendix 11-8150
Timing Kit using the procedure described in sub-paragraph a. However, if a timing kit is not available, the cast
in timing marks in the breaker housing and a fabricated pointer may be used as described in sub-paragraph b.
a. Check the internal timing with the Bendix 11-8150 Timing Kit using the following procedure:
1. Remove the magneto from the engine and remove the contact point cover.
2. Loosen the nut securing the drive plate to the magneto shaft sufficiently in order to install the
Bendix 11-8465 Rotor Holding Tool under the nut and flat washer as shown in Figure 8-13.
Tighten the nut enough to hold the tool securely.
3. Install the Bendix 11-8147 Plate Assembly to the breaker compartment of the magneto as shown
in Figure 8-14.
4. Remove the timing inspection plug from the top of the magneto and turn the rotating magnet in the
direction of normal rotation until the painted chamfered tooth on the distributor gear is
approximately in the center of the inspection window. Then turn it back until rotating magnet
locates in its neutral position. Tighten adjustment knob of 11-8465 Rotor Holding Tool, holding
the rotating magnet in the neutral position.
CAUTION
Tighten adjusting knob of rotor holding tool only enough to hold magnet
shaft firmly. Do not overtighten.
Revised: 8/31/77
2B11
CHEROKEE ARROW III SERVICE MANUAL
POWER PLANT - CONTINENTAL