Alternator/Regulator Test Process/Replacement Info (CAT. 5, NO. 058/83)

Publication date: 1983-11-09
Reference number: CAT. 5, NO. 058/83

ALTERNATOR/REGULATOR TEST PROCESS/REPLACEMENT INFO

TECHNICAL SERVICE BULLETIN

Reference Number(s): CAT. 5, NO. 058/83, Date of Issue: 11/9/83

IC REGULATOR CHECKING PROCEDURE

Models All Models

Bulletin No. 058/83

Category 5

Date 11/9/83

DESCRIPTION

Checking procedure for the built-in IC regulator has been established to pin point the alternator problem. Basically, the alternator should be replaced as a unit through the exchange program. However, in case of a shortage of refurbished alternators, you may replace the IC regulator to minimize inconvenience of customers (see Fig 1 ).

Fig 1: Exploded View of Alternator

PARTS INFORMATION

Regulator N221 24 520

CHECKING PROCEDURE

Make sure the battery is fully charged.
Turn ignition key on to "Ig" position. If the alternator warning light is "off", the problem is likely to be caused by regulator. Leave the key in "Ig" position and take the following step to assure the cause.
Insert volt meter between "F" terminal and nearest ground point Fig. Fig 2 ).
Do not ground to the body of the alternator while positive probe of voltmeter is inserted through the hole for "F" terminal.

Fig 2: Location of "F" Terminal

REPAIR PROCEDURE

Please refer to the Service Information for IC regulator replacing procedure.

NOTE: Be sure the insulators are in the proper position as shown in Fig. 3.

Fig 3: Proper Location of Insulators