REMOVAL OF MAGNETO.
1. Remove the engine cowl.
2. Disconnect the “P” lead from the magneto.
3. Remove the harness outlet plate from the magneto by removing the four attaching screws.
4. Remove the two nuts and washers securing the magneto to the engine accessory housing.
5. Pull the magneto from the engine.
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 1.
H o w e v e r, 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 2.
1. Check the internal timing with the Bendix 11-8150 Timing Kit using the following procedure:
A. Remove the magneto from the engine and remove the contact point cover.
B. 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 74-6.
Tighten the nut enough to hold the tool securely.
C. Install the Bendix 11-8147 Plate Assembly to the breaker compartment of the magneto as shown
D. 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.
E. Install the Bendix 11-8149 Pointer Assembly on the cam screw and align pointer with the zero
degree mark on the timing plate.
F. Loosen adjusting knob of rotor holding tool and turn rotating magnet in normal direction of
rotation until pointer indexes with the respective 10° mark (“E” gap). Tighten adjustment knob of
rotor holding tool.
G. With the Bendix 11-9110 Timing Light or equivalent, adjust main breaker contacts to just open at
this position. Loosen holding tool and turn rotating magnet until breaker cam follower is on the
high point of the cam lobe. Tighten holding tool and measure contact clearance. It must be 0.018 +
0.006. If not, readjust breaker and recheck to be sure that contacts will open within “E” gap
tolerance +4°. Replace breaker assembly if “E” gap tolerances and contact clearance cannot be
obtained.
H. After timing is complete, tighten breaker securing screws to 20 to 25 inch-pounds and recheck
settings. Remove timing kit parts.
Effectivity
74-11-03
PA-28RT-201T
Page 74-07
December 1, 1978
3D16
PIPER AIRCRAFT
PA-28RT-201 / 201T
MAINTENANCE MANUAL
Summary of Contents for Arrow IV
Page 18: ...CHAPTER AIRWORTHINESS LIMITATIONS 1A18...
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Page 22: ...CHAPTER TIME LIMITS MAINT CHECKS 1A22...
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Page 40: ...CHAPTER DIMENSIONS AND AREAS 1B16...
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Page 53: ...CHAPTER LIFTING AND SHORING 1C5...
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Page 57: ...CHAPTER LEVELING AND WEIGHING 1C9...
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Page 62: ...CHAPTER TOWING AND TAXIING 1C14...
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Page 66: ...CHAPTER PARKING AND MOORING 1C18...
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Page 70: ...CHAPTER REQUIRED PLACARDS 1C22...
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Page 77: ...CHAPTER SERVICING 1D5...
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Page 110: ...CHAPTER STANDARD PRACTICES AIRFRAME 1E14...
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Page 117: ...CHAPTER ENVIRONMENTAL SYSTEM 1E21...
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Page 169: ...CHAPTER AUTO FLIGHT 1H1...
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Page 176: ...CHAPTER COMMUNICATIONS 1H8...
Page 185: ...CHAPTER ELECTRICAL POWER 1H17...
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Page 233: ...CHAPTER FLIGHT CONTROLS 1J17...
Page 297: ...CHAPTER FUEL 2A18...
Page 320: ...CHAPTER HYDRAULIC POWER 2B17...
Page 355: ...CHAPTER LANDING GEAR 2D4...
Page 418: ...CHAPTER LIGHTS 2F19...
Page 430: ...CHAPTER NAVIGATION AND PITOT STATIC 2G7...
Page 444: ...CHAPTER OXYGEN SYSTEM 2G21...
Page 464: ...CHAPTER VACUUM SYSTEM 2H17...
Page 473: ...CHAPTER ELECTRICAL ELECTRONIC PANELS AND MULTI PURPOSE PARTS 2I2...
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Page 477: ...CHAPTER STRUCTURES 2I6...
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Page 496: ...CHAPTER DOORS 2J1...
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Page 505: ...CHAPTER STABILIZERS 2J10...
Page 514: ...CHAPTER WINDOWS 2J19...
Page 519: ...CHAPTER WINGS 2J24...
Page 550: ...CHAPTER PROPELLER 3A18...
Page 565: ...CHAPTER STANDARD PRACTICES ENGINE 3B9...
Page 568: ...CHAPTER POWER PLANT 3B12...
Page 592: ...CHAPTER ENGINE FUEL AND CONTROL 3C12...
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Page 611: ...CHAPTER IGNITION 3D7...
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Page 655: ...CHAPTER ENGINE INDICATING 3F16...
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Page 664: ...CHAPTER EXHAUST 3G1...
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Page 669: ...CHAPTER OIL SYSTEM 3G6...
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Page 673: ...CHAPTER STARTING 3G10...
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Page 688: ...CHAPTER TURBINES 3H1...
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Page 694: ...CHAPTER 91 CHARTS AND WIRING DIAGRAMS 3H7...
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