Fuel Shutdown Solenoid SA-4975 2370S for industrial diesel engines using Woodward 2370S control

SA-4975 Configuration-Specific Diesel Shutdown Solenoid

SA-4975 is a coded shutdown solenoid for industrial diesel engines using Woodward 2370S control. The full number is functional data: voltage, mounting, plunger, grounding, terminals, boot and spring can change with individual suffix characters. Keep the complete code intact on the RFQ, purchase order and carton label.

SA-4975 Product Information

Complete-Code Approval for SA-4975

Match the complete stamped reference because voltage, winding, mounting, terminals, output geometry and duty can differ within the same family.

Electrical and Mechanical Checks for SA-4975

Check the electrical command, component response and final mechanical movement as separate observations. This prevents a wiring, control-module or linkage fault from being mistaken for a failed replacement part.

SA-4975 Replacement Approval Checklist

Release the order only after electrical, mechanical and application evidence agrees with the removed assembly.

SA-4975 Technical FAQ

What voltage must be confirmed for SA-4975?

SA-4975 is covered here as 12V. Confirm the charging system and old label, then measure voltage at the connector during the start or stop command. A battery description alone is insufficient when converters, relays or earlier harness repairs may have changed the actual supply.

What should be checked on industrial diesel engines using Woodward 2370S control before ordering SA-4975?

Use SA-4975 / 2370S as the first control, then compare the old label, voltage, connector face, mounting-hole centers, output end and operating direction. Record the engine or machine model and serial number, but do not use the model name alone because production changes can introduce another shutdown arrangement.

Why must the complete SA-4975 suffix be retained?

The suffix can encode mounting, plunger thread, grounding, terminals, boot and spring family. Shortening the code can merge non-interchangeable parts in purchasing records. Photograph every readable character and retain the full string on the RFQ, order and carton label.

Can another solenoid with the same voltage replace SA-4975?

Voltage is only one control point. Mounting style, plunger thread, energized direction, terminal arrangement, grounding, boot clearance and required force must also agree. Compare the complete code and removed-part dimensions instead of selecting by coil voltage alone.

What causes a start-then-stop fault on this coded solenoid?

The pull circuit may move the plunger during cranking while the hold circuit fails after the start signal is released. Measure hold-terminal voltage under load, inspect relay logic and connector resistance, and confirm the plunger reaches full travel.

What should be compared with the removed SA-4975 assembly?

Compare the full label, voltage, connector face, terminal count, mounting-hole centers, body orientation, output end, resting length and working travel. Include one wider installed photo showing pump, lever or surrounding clearance because close product images can hide the geometry that decides fitment.

How can repeat electrical or coil damage be prevented?

Correct the original failure cause before installation. Check supply voltage, pull/hold timing, linkage resistance, mechanical stops, terminal tightness, heat and moisture exposure. A new unit can fail quickly when the high-current stage remains energized or the output cannot complete its designed stroke.

Request a Quote for SA-4975

Send the complete reference group, confirmed voltage, industrial diesel engines using Woodward 2370S control, removed-part photos, measurements and order quantity for a fitment-focused B2B quotation.