Toyota Celica 1986-1993 Repair Guide

Voltage Regulator

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The Integrated Circuit (IC) voltage regulator is contained within the alternator and is not adjustable.

REMOVAL & INSTALLATION




CAUTION
On models with an air bag, wait at least 30 seconds from the time that the ignition switch is turned to the lock position and the battery is disconnected before performing any further work.

  1. Disconnect the negative battery terminal.
  2.  
  3. Remove the alternator.
  4.  
  5. Remove the 3 rear end cover bolts and the nut, if necessary, to remove the cover.
  6.  
  7. Note the position of the regulator, remove the brush holder screws, then remove the brush holder and the IC regulator.
  8.  

To install:



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Fig. Fig. 1 Removing the alternator rear end cover1986-89 shown



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Fig. Fig. 2 Installing the regulator and brush holder1986-89 shown



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Fig. Fig. 3 Adjusting the brush holder and connector clearance1986-89 shown

  1. Install the brush holder and regulator in the original position.
  2.  
  3. Install the screws, making sure there is a clearance of approximately 0.04 in. (1mm) between the brush holder and the connector.
  4.  



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Fig. Fig. 4 Removing the alternator rear end cover1990-93 shown



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Fig. Fig. 5 Removing the regulator and brush holder1990-93 3S-GTE engine and automatic transaxle shown



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Fig. Fig. 6 Installing the regulator and brush holder4A-fe and 5S-FE with manual transaxle shown



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Fig. Fig. 7 Adjusting the brush holder and connector clearance4A-FE and 5S-FE with manual transaxle shown

  1. Install the rear end cover.
  2.  
  3. Install the alternator, reconnect the battery and check the charging system.
  4.  



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Fig. Fig. 8 Installing the regulator and brush holder, then adjusting the brush holder and connector clearanceAutomatic transaxle and 3S-gte engine shown



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Fig. Fig. 9 Rear end cover and IC regulator assembly1986-89 shown

 
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