SB663A - Continental Motors
Contents
1. A 1aNWJSSY LOVLNOO d3LJNWOHOYL 20900 01 PAGE NO REVISION Teledyne Continental M otors Q CONTINENTAL A Teledyne Technologies Company P O Box 90 Mobile Alabama e 251 438 3411 4 gt D amp BE lt 5 X tio BE lt O WIRE STRANDS AND INSULATION NO LOOSE NICKED SCRAPED MUST BOTH BE VISIBLE IN THIS AREA OR CUT STRANDS THIS AREA WIRE BARREL SEAM CLOSED WITH NO CONDUCTOR STRANDS SHOWING 0 ff CONDUCTOR ENDS FLUSH TO OR SLIGHTLY BEYOND END NO DAMAGE TO NO EXCESSIVE WIRE OF WIRE BARREL MATING AREA BARREL FLASH FIGURE 3 PAINT DOT IN LOCATION AS SHOWN FIGURE 4 Initial compliance identification Applicable to designated serial number range only NOTE Initial compliance does not preclude recurring compliance performance in accordance with the recurring inspection requirements of this bulletin ISSUED REVISED PAGE NO REVISION YEAR YEAR Teledyne Continental otors Inc of 5 A A Teledyne Technologies Company A or 24 ono7_ P O Box 90 Mobile Alabama e 251 438 3411 SB6632. and to ensure that no wire is pinched between the breaker cover and distributor housing at assembly Any excess coil wire may be protected by bending it away from the cam Coil and capacitor wires feature insulation that is relatively soft Indentations on the insulation on these parts are normal and expected Any exposed wire strands is cause for replacement Replace damaged parts as necessary The two tachometer wires use a short length of tubing as an assembly aid the position of the tubing at ISSUED REVISED PAGE NO REVISION A 7 CONTINENTAL pav vean mo pav vear o MO DAY YEAR MO_ DAY YEAR Teledyne Continental M otors Inc 2 of 5 mpa P O Box 251 438 3411 58663 assembly is unimportant Either tachometer wire may pass through either hole in the bushing in the breaker compartment cover 3 Whenever access allows inspect the wiring terminals Flag Terminals for integrity as shown in Figure 3 4 Hi Pot insulation integrity test a As applicable disconnect magneto tachometer wires from all airframe circuits in accordance with airframe manufacturer s instructions b Using Slaughter Model 1305 Dielectric Breakdown Tester or equivalent set to 500V apply 500 to each tachometer wire and ground No indication of dielectric breakdown is permissible c Replace all tachometer breaker assemblies or related components that indicate any dielectric breakdown in accordance with the latest
3. TCM has developed procedures to ensure the integrity of the tachometer circuit The tachometer breaker assembly P N 10 400507 supersedes P N 10 361631 is designed to be insulated from the magneto ground when it is installed in the magneto The following maintenance procedures must be followed at each magneto overhaul 500 hour inspection each time the tachometer points are replaced or any time the magneto tachometer circuit exhibits abnormal operation ISSUED REVISED e PAGE NO REVISION YEAR YEAR Teledyne Continental otors Inc A ARACEAE P O Box 90 Mobile 438 3411 SB663 2007 Teledyne Continental Motors Tac INSTRUCTIONS FOR CONTINUED AIRWORTHINESS This Service Bulletin contains updates to the manufacturer s Instructions for Continued Airworthiness ICA as required by FAR 43 13 a A copy of this bulletin must be inserted into the specified locations in the manuals listed in TABLE 2 until the manual is updated or the bulletin is superseded or cancelled MANUAL NUMBER SECTION SECTION HIGH TENSION MAGNETOS Also included in the X40000 TCM Ignition Systems Master Service Manual TABLE 2 MANUAL REFERENCE CHART INSPECTION AND ASSEMBLY PROCEDURES 1 Parts Assembly Figure 2 depicts the correct current configuration of parts assemblies and wiring in the magneto breaker compartment of the affected magnetos a Inspect the P N 10 361639 tachometer insulating bushings for cracks crushing or other d
4. TELEDYNE CONTINENTAL AIRCRAFT ENGINE SERVICE BULLETIN SB663A Compliance Will Enhance Safety Maintenance or Economy of Operation Technical Portions FAA SUBJECT TWO WIRE MAGNETO TACHOMETER Approved BREAKER CONTACT POINTS ASSEMBLY PART NUMBER 10 400507 PURPOSE To advise of procedures to ensure the integrity of the tachometer circuit in certain Teledyne Continental Motors TCM Ignition Systems Magnetos COMPLIANCE All affected magnetos must be inspected and maintained per the instructions contained in this bulletin at each magneto overhaul 500 hour inspection each time the magneto tachometer breaker points are serviced or replaced or at any time a component that utilizes the magneto tachometer breaker points exhibits abnormal operation Additionally any affected part number magneto between serial numbers DO5DA001 to DO6JA001 or between serial numbers EO5DA001 to EOQ6JA001 must be inspected per this service bulletin at the next scheduled maintenance visit See Figure 4 for initial compliance marking requirements applicable to above listed serial number magnetos only MODELS AFFECTED Fora list of the affected magneto part numbers see Table 1 S4LN 21 10 5 1360 47 S4LSC 21T 10 5005 14 201 BL 5005 14 201 S6LSC 25T 10 500556 203 BL 500556 203 S4LSC 204T 10 600644 201 BL 600644 201 S6LSC 204T 10 600646 201 BL 600646 201 TABLE 1 AFFECTED MAGNETO MODEL AND PART NUMBER MATRIX GENERAL Teledyne Continental Motors
5. amage Current bushings use phenolic material that is laminated in an annular circular pattern Reference Figure 1 b Any bushing found to have parallel laminations as shown in Figure 2 must be replaced before further service c Set tachometer contacts to 016 022 clearance on the high lobe of the cam Apply 8 10 inch pounds torque to the retaining screws d Visually inspect the P N 10 361639 phenolic insulating bushings for damage after torque application Any damaged bushings must be replaced before further service e Washer P N 10 14268 is used under the screw at the adjusting slot in the P N 10 400507 tachometer contact assembly The washer 15 thicker and wider to spread the clamping load evenly to the bushing that bridges the slot Washer P N 10 400566 is used under the screw at the pivot hole in the P N 10 400507 tachometer contact assembly This washer is smaller to ensure electrical insulation from the tachometer assembly The insulating bushing is supported on all sides by the breaker support 2 The breaker compartment features four wires that must be assembled properly to ensure continued reliable service the coil primary wire the two tachometer wires and the capacitor wire See FIGURE 2 Whenever access allows inspect wires to ensure that they are free of cuts or chafing damage Wires must be routed as shown in FIGURE 2 to ensure that they do not interfere with the rotating cam and associated parts during operation
6. revision of S 20 S 200 Series High Tension Magneto Service Support Manual form X42002 1 dated November 1993 and installation requirements detailed above Repeat Hi Pot test following parts replacement d Reattach magneto tachometer wires to airframe wires in accordance with the latest Airframe manufacturer s instructions Slaughter Model 1305 Dielectric Breakdown Tester available from Slaughter Company Inc 28105 N Keith Drive Lake Forest IL 60045 USA Ph 800 504 0055 Email Sales hipot com PARALLEL LAMINATIONS ANNULAR LAMINATIONS FIGURE 1 P N 10 361639 PHENOLIC BUSHING INSPECTION ISSUED REVISED PAGE NO REVISION YEAR YEAR Teledyne Continental otors Inc 3 of 5 A A Teledyne Technologies Company A or 24 ono7_ P O Box 90 Mobile Alabama e 251 438 3411 SB663 65 WHIM TWODV ALVOIANI LON Od ANV HO NOILVALSATH AOA AAY CANO SAOTOO WHIM ANV AVIAWASSV LNANLAVdANWNOO dqOLIOVdVO 910 X Al vZb X dO 60 YAIHSVM 99900 04 5 72 9698 04 7 7 GOLZGE Ol vaz 4 7 OL AGEIESEY 4 CNV dJ IM 989007 0 ONILVINSNI ONIHSN 68919 01 YAHSVM 89t 1 01 IHL ZEO X p694 X dO SZE HIHSYM 891 0 MAHOS 9 66 0 MAYOS 72 9698 04 AJANISSY LOYLNOO S8Sz8e 0l NILYTNSNI 29192 01
Download Pdf Manuals
Related Search