Toyota 27700-10050 Regulator Assy, Generator

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Remove the alternator and place it on a clean workbench. Remove the three rear cover nuts, the nut and terminal insulator, and the rear cover. Take the nut, washer and insulator off terminal B and remove the alternator end cover. Once the rear cover is removed, remove the five screws that retain the voltage regulator and the brush holder. Remove the brush holder and the regulator from the rear end frame. If you are only replacing the regulator, install the new unit, reassemble the alternator, and install it on the engine. If you are going to replace the brushes, proceed with the next. Measure the exposed length of the brushes and compare your measurements to the specified minimum length to determine whether they should be replaced. If the length of either brush is less than the specified minimum, replace the brushes and brush holder assembly. Note: On some models, it may be necessary to solder the new brushes in place. Make sure that each brush moves smoothly in the brush holder. Install the brush holder by depressing each brush with a small screwdriver to clear the shaft. Install the voltage regulator and brush holder screws into the rear frame. Install the rear cover and tighten the three nuts securely. Install the terminal insulator and tighten it with the nut. Install the alternator.