1987 Chevrolet Corvette Alternator Delco Repair Manual

1987 Chevrolet Corvette Delco Alternator Technical Scope

• Covers the 1987 Chevrolet Corvette electrical charging system, specifically documenting Delco-Remy 10SI, 12SI, 15SI, 17SI, 27SI, CS-121, and CS-130 alternator variants
• Official General Motors publication, 1987 edition
• Contains 15 detailed diagnostic figures, including a 10SI cutaway view, SI series terminal identification, wiring schematics, and bench testing connection diagrams
• Delivers as a direct download the moment payment clears
• Indexed PDF search covers every chapter and appendix
• Stored against your account so you can retrieve it after a hard-drive loss
• This 1987 publication provides the definitive factory testing and overhaul reference for the complete Delcotron line, differentiating between SI and CS internal regulator architecture

Component and Diagnostic Documentation

The 1987 Chevrolet Corvette alternator manual outlines the operational theory and bench testing procedures for both SI and CS series units. Coverage includes visual inspection routines for belt tension and terminal integrity, followed by on-vehicle charging tests using standardized diagnostic equipment. Experts will find specific guidance on identifying open circuits, rectifying undercharged or overcharged battery conditions, and verifying voltage regulator settings within the 13.5–16.0 volt range.

Internal component testing procedures are described for stators, rotors, rectifier bridges, and diode trios. Electrical reference data is provided for ohms-based rotor winding checks and diode function analysis. The manual outlines the required mechanical steps for bearing replacement, slip ring servicing, and field winding verification, along with the correct mounting bolt torque values. An extensive section details electrical component locations throughout the 1987 Chevrolet Corvette, including relays, sensors, and fuse blocks.

Specification Highlights

The manual includes comprehensive test specifications for the entire Delco-Remy lineup, detailing amperage output at 14 volts, field current ratings at 80°F, and operational speed thresholds. Data regarding 10SI–27SI and CS-121/130 series performance is tabulated for quick reference during troubleshooting.

• Rotor resistance for SI series units is specified at 2.4–3.5 ohms.
• Rated outputs for the 1987 Chevrolet Corvette alternator lineup range from 37 to 108 amps.
• Regulator voltage test settings are documented at a minimum of 13.5 volts and maximum of 16 volts.

Reference only — always consult a certified technician before performing service on this equipment. This 100-page OEM factory manual covers the 1987 Chevrolet Corvette Delco alternator system, providing full diagnostic, overhaul, and component testing specifications for SI and CS series charging hardware.