ISUZU Amigo/Pick-ups/Rodeo/Trooper 1981-1996

External Voltage Regulator

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See Figure 1



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Fig. Fig. 1: External voltage regulator components

An external voltage regulator is used with the early 4-cylinder engines. The regulator is mounted on the left inner fender.

ADJUSTMENT



See Figures 2, 3 and 4



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Fig. Fig. 2: A feeler gauge is used for adjustments



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Fig. Fig. 3: Adjusting the regulator point gap



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Fig. Fig. 4: Adjusting the voltage

  1. Remove the regulator from the vehicle and place on a clean work surface. Remove the regulator cover.
  2.  
  3. If the points are pitted, clean them carefully with fine emery paper.
  4.  
  5. Check and adjust the core gap first and then the point gap.
  6.  
  7. Adjust the core gap by loosening the screws attaching the contact set to the yoke. Move the contact set up or down as required. The standard core gap is 0.024-0.039 in. (0.6-1.0mm). Tighten the attaching screw.
  8.  
  9. Adjust the point gap by loosening the screw attaching the upper contact. Move the upper contact up or down as required. The standard point gap is 0.012-0.016 in. (0.3-0.4mm).
  10.  
  11. Adjust the regulated voltage by turning the adjusting screw. Turn the adjusting screw in to increase the voltage and out to reduce the voltage. When the correct adjustment is obtained, secure the adjusting screw by tightening the locknut. The regulated voltage is 13.8-14.8V.
  12.  
  13. Install the regulator cover, and install the regulator in the vehicle.
  14.  

REMOVAL & INSTALLATION



  1. Disconnect the negative battery cable.
  2.  
  3. Tag and disconnect the electrical leads at the voltage.
  4.  
  5. Remove the regulator mounting screws and remove the regulator.
  6.  

To install:
  1. Install the voltage regulator and secure with the retainer screws.
  2.  
  3. Connect the electrical leads to the regulator.
  4.  
  5. Connect the negative battery cable.
  6.  
  7. Start the vehicle and check for proper voltage.
  8.  

 
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