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Author: sam

3406E

26SI Series Alternator – Diode Assembly – Test

Posted on April 21, 2021 by sam

Illustration 1 g00873253 Diode Assembly (1) Terminal (2) Terminals Remove the diode assembly from the alternator. Set the multimeter to the diode scale. Connect the…

3406E

26SI Series Alternator – Capacitor – Test

Posted on April 21, 2021 by sam

Illustration 1 g00901704 Capacitor (1) Housing (2) Terminal Remove the capacitor from the alternator. Touch terminal (2) to housing (1) in order to discharge the…

3406E

26SI Series Alternator – Pinion Clearance – Adjust

Posted on April 21, 2021 by sam

37-MT Starting Motors (12 Volt Systems) Illustration 1 g00810014 Connections for pinion clearance check for 12 volt system (1) Battery (2) Starting motor (3) Solenoid…

3406E

26SI Series Alternator – Brush and Brush Holder – Check

Posted on April 21, 2021 by sam

Table 1 Tools Needed     6V-7070     Digital Multimeter     Brush Holder Test Illustration 1 g00800898 Typical example of a brush holder…

3406E

26SI Series Alternator – Starting Motor Solenoid – Test

Posted on April 21, 2021 by sam

Note: The graphics that are illustrated in this section refer to the solenoids that are 24 VDC. Solenoids that are 12 VDC use the same…

3406E

26SI Series Alternator – No Load – Test

Posted on April 21, 2021 by sam

Table 1 Tools Needed     6V-7070     Digital Multimeter     225-8266     Ammeter Tool Gp     1U-6602     Photo-Tachometer…

3406E

26SI Series Alternator – Component – Test

Posted on April 21, 2021 by sam

Stator Check the resistance that is between each of the phases. Measure the resistance between the end of each lead wire and neutral point. The…

3406E

26SI Series Alternator – T8 Alternator Overcharging – Test

Posted on April 21, 2021 by sam

Verify that the nut for the “B+” terminal is tight. Verify that the wire has a good connection to the “B+” terminal. Many Caterpillar machines…

3406E

26SI Series Alternator – T7 Identifying Source of Current Draw – Test

Posted on April 21, 2021 by sam

Make sure that every electrical component is turned OFF. Make sure that the keyswitch is turned OFF. Make sure that the dome lights are OFF.…

3406E

26SI Series Alternator – T6 Residual Magnetism Restoration

Posted on April 21, 2021 by sam

Reference: Service Magazine, SEBD1672 July 1986, “Brushless Alternators May Not Charge In Certain Conditions” Start the engine and set the throttle to at least 75%.…

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