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Consult the appropriate Manufacturers Maintenance Publication

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500 Hour Inspection Details

 

Bendix S20/ S200 Series Mags

 

Comply with ALL ADs, and Service Bulletins

  • Measure endplay of bearings (.000 to maximum of .002)

  • complete dissassembly of the mag.

  • housings checked for cracks, spun bearings, pulled threads

  • distributor block and breaker cam oil bathed in 10-400550 oil at 200 degrees for 3 hours (early style blocks that require a water proof dip are automatically changed since dip is no longer produced)

  • replace all distributor block felt packing

  • oil felt washer with 10-400550 oil

  • coil measured .5 ohms primary/ 15k ohms secondary

  • coil clamps must have half moon or FAA/PMA mark

  • Impulse Coupling Cam check for loose washers/ rivets and measure axial to flyweight (.014 Max)

  • inspect distibutor gear for wear, discoloration, loose washers/ electrode finger, measure distance shaft to finger. Change out all capture washer distibutor gears per SB-658.

  • test capacitor, replace out of spec.

  • replace contacts

  • clean and inspect bearings

  • recharge rotor

  • replace all hardware, oil seal, slinger

  • time and test run hot

**

Bendix S1200 Series Mags
 

Comply with ALL ADs, and Service Bulletins

  • complete dissassembly of the mag.

  • housings checked for cracks, spun bearings, pulled threads

  • distributor block and breaker cam oil bathed in 10-400550 oil at 200 degrees for 3 hours (early style blocks that require a water proof dip are automatically changed since dip is no longer produced)

  • replace all distributor block felt packing

  • oil felt washer with 10-400550 oil

  • coil measured .5 ohms primary/ 15k ohms secondary

  • inspect distibutor gear for wear, discoloration, loose washers/ electrode finger,  per SB-658.

  • Impluse Coupling Cam check for loose washers. rivets and measure axial to flyweight (.014 Max)

  • test capacitor, replace out of spec.

  • replace contacts

  • inspect bearings replace if needed

  • recharge rotor

  • replace all hardware, slinger, snap rings

  • time and test run hot

**

Slick 4300/6300 Series
 

Comply with all ADs, and Service Bulletins

  • Complete disassembly of the magneto

  • Parts change included with inspection- contacts/cam/rotor gear/bearings/oil seal/carbon brush/hardware.

  • The remaining parts are inspected for wear, damage and their ability to function to spec/manufacturer requirements, and replaced if needed.

  • Clean and inspect housings for cracks, spun bearings, and pulled threads

  • Oil bath distributor block and support bracket

  • Recharge rotor magnet.

  • Test run HOT. 

  • Average cost $400-$450 (labor and included parts)

  • Inspections come with a 500 hour warranty

  • 4200 and 6200 series slicks, call for options.

    **

**For Complete details, procedures, tools, test equiptment and parts refer to your OEM master service manuals**

The above text is a brief summery of the 500 hour inpection

Test, Repair, Inspect and Overhaul Bendix and Slick aircraft magnetos