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Category: Delco 27SI

Delco 27SI

Delco 27SI Disassembly and Assembly – Alternator – Assemble

Posted on November 25, 2020 by sam

Assembly Procedure Table 1 Tools Needed 1P510 Driver Gp 1 Note: Before assembly, clean all parts in cleaning fluid. Allow the parts to air dry. DO NOT…

Delco 27SI

Delco 27SI Disassembly and Assembly – Alternator – Disassemble

Posted on November 25, 2020 by sam

Disassembly Procedure Start By: Remove the alternator from the machine. Refer to Disassembly and Assembly, “Alternator – Remove” for the machine that is being serviced.…

Delco 27SI

Delco 27SI Testing and Adjusting – Residual Magnetism – Restore

Posted on November 25, 2020 by sam

Restoring the Residual Magnetism (1) Jumper wire Reduced residual magnetism results in charging problems during start-up. Follow the procedure below in order to restore the…

Delco 27SI

Delco 27SI Testing and Adjusting – Insulated Screw – Check

Posted on November 25, 2020 by sam

Inside of the Rear Frame (1) Insulated screw (2) Insulated screw (3) Insulated screw Insulated screws (1) and (2) fasten the field winding leads to…

Delco 27SI

Delco 27SI Testing and Adjusting – Brush Length – Check

Posted on November 25, 2020 by sam

Brush holder (1) Brushes (2) Brush length Measure the length of brushes (1). The minimum brush length (2) is 7.6 mm (0.30 inch). New brush…

Delco 27SI

Delco 27SI Testing and Adjusting – Stator – Test

Posted on November 25, 2020 by sam

Stator Winding Continuity Test Stator (1) Leads (2) Frame Remove the stator from the alternator.   Connect the multimeter leads across each pair of stator…

Delco 27SI

Delco 27SI Testing and Adjusting – Regulator – Test

Posted on November 25, 2020 by sam

The regulator test determines problems in the following components: the regulator, the field winding, the rectifier and the diode assembly. The regulator test does not…

Delco 27SI

Delco 27SI Testing and Adjusting – Rectifier – Test

Posted on November 25, 2020 by sam

Illustration 1 g00873381 Rectifier (1) Negative diode clips (2) Grounded heat sink (3) Positive diode clips (4) Insulated heat sink For the following tests, bend…

Delco 27SI

Delco 27SI Testing and Adjusting – Field Winding – Test

Posted on November 25, 2020 by sam

Illustration 1 g00872663 Field Winding (1) Leads (2) Housing Field Winding Continuity Test   Remove the field winding from the alternator.   Connect the multimeter…

Delco 27SI

Delco 27SI Testing and Adjusting – Diode Assembly – Test

Posted on November 25, 2020 by sam

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

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