Facts About Generators
GeneratorsDirectoryCompareRepairEnginesControllersPartsManufacturersGuides
Search models or part #
Home›Repair guides›Testing for Open or Shorted Winding

Ford ES — Testing for Open or Shorted Winding

For the Ford ES.

Browse Ford generators & specs →

Before you start

  • NOTE: FIELD
  • NOTE: T h e 2500ohm external voltage a d j u s t potentio-

Procedure

  1. Remove rotor: leads F1+ and F2- from rotating
  2. Using ohmmeter, check resistance between F1
  3. Replace defective rotor with new, identical part if
  4. Inspect all wires for breaks, loose connections,
  5. Remove wires from terminals at each end and
  6. Using an ohmmeter, check each wire against
  7. Reconnect or replace wires according to
  8. Stop engine.
  9. Disconnect and if necessary, label the following
  10. Remove four screws at corners.
  11. Remove used PC board.
  12. Install new PC board; secure with four screws.
  13. Reconnect wires removed in step 2 at the proper
  14. Place jumper W10 at proper terminals for your
  15. Perform Voltage Calibration and Stability Ad-
  16. 1 / 2 1
  17. 1/21

Specs & torque values

  • 2. Using ohmmeter, check resistance between F1
  • OHMMETER -
  • Using an ohmmeter set at R x 100, test each stator
  • one megohm indicates a ground.
  • OHMS @ 20°C (68°F)
  • using an ohmmeter, check each wire end to end
  • 3. Using an ohmmeter, check each wire against
  • NOTE: T h e 2500ohm external voltage a d j u s t potentio-

Source: manual:0900-0335_Service Manual Ford Engine Detector I1_198207.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.