Adjustments

Chrysler-Built

Top of Form

PATH:Engine ElectricalCharging SystemVoltage RegulatorAdjustmentsChrysler-BuiltLower Contact Voltage

Lower Contact Voltage
  1. Remove the regulator cover.
  2. Measure the lower contact point gap with a feeler gauge. The lower contact gap should be 0.014 in. plus or minus 0.002 in. If necessary, adjust the contact gap by bending the lower stationary contact bracket while making sure that the contacts remain in alignment.

Mechanical voltage regulator (cover removed)
  1. If the voltage reading is now correct, refit the regulator cover. If the lower contact gap is correct but the voltage reading is still outside the 0.2–0.7 volt increase, continue this procedure to adjust the lower contacts air gap.

Testing air gap on mechanical voltage regulator
  1. Connect a small dry cell and test lamp in series with the IGN and FLD terminals of the voltage regulator.
  2. Insert a 0.048 in. wire gauge between the regulator armature and the core of the voltage coil next to the stop pin on the armature.
  3. Press down on the armature (not on the contact reed) until the armature contacts the wire gauge. The upper contacts should just open and the test lamp should be dim.
  4. Insert a 0.052 in. wire gauge between the armature and the voltage coil core, next to the stop pin on the armature.
  5. Press down on the armature until it contacts the wire gauge. The upper contacts should remain closed and the test lamp should remain bright.
  6. To obtain the correct difference of 0.2–0.7 volt increase of the lower contact voltage over the upper contact voltage, adjust the lower contacts air gap by loosening the stationary contact bracket screw and moving the bracket up or down to obtain the proper air gap setting as follows:

If the difference is above 0.7 volt, reduce the air gap to a minimum of 0.045 in. with the contacts open and the test lamp dim. At 0.048 in., the contacts should close and the test lamp should be bright.

If the difference is below 0.2 volt, increase the air gap to a maximum of 0.055 in. with the contacts closed and the test lamp bright. At 0.052 in., the contacts should be open and the test lamp should be dim.

Be certain that the air gap is measured with the stationary contact bracket attaching screw fully tightened.

  1. When all adjustments are complete, refit the regulator cover.

Top of Form

PATH:Engine ElectricalCharging SystemVoltage RegulatorAdjustmentsChrysler-BuiltUpper Contact Voltage

Upper Contact Voltage
Adjusting mechanical voltage regulator
  1. Remove the regulator cover.
  2. Use an insulated tool (see illustration) to adjust the upper contact voltage as necessary by bending the regulator lower spring hanger down to increase the voltage setting or up to decrease the voltage setting.
  3. Refit the regulator cover.

Bottom of Form

Bottom of Form