Diesel Control Actuator 03741301 01938800 for Hatz 1B, 1D, 2L, 3L and 4L diesel engines

03741301 Diesel Engine Control Actuator

03741301 is an actuator-style solenoid for Hatz 1B, 1D, 2L, 3L and 4L diesel engines. Selection requires the complete reference, voltage, energized direction, stroke, mounting and control method. A motor or solenoid can energize yet fail in service when preload or linkage geometry prevents the commanded travel.

03741301 Product Information

Control Direction and Stroke Approval for 03741301

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

Separating Actuator, Wiring and Linkage Faults

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.

03741301 Replacement Approval Checklist

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

03741301 Technical FAQ

What voltage must be confirmed for 03741301?

03741301 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 Hatz 1B, 1D, 2L, 3L and 4L diesel engines before ordering 03741301?

Use 03741301 / 01938800 / 03741300 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.

How is energized-to-run different from energized-to-stop?

An energized-to-run actuator must remain powered while the engine operates; an energized-to-stop unit receives power only for shutdown. Confirm the original control logic because the wrong mode can create a no-start condition, uncontrolled return or continuous coil heating.

Why should installed preload be measured for 03741301?

Excess preload can prevent full travel and force the actuator against a mechanical stop; too little can leave insufficient lever movement. Record the resting output position, commanded stroke and lever endpoints with the original actuator installed.

What does actuator movement without machine response indicate?

Electrical movement is only the first step. Inspect the clevis, rod, cable or lever for free play, loose hardware and incorrect adjustment. Confirm that the controlled lever reaches both endpoints while the actuator completes its own travel.

What should be compared with the removed 03741301 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 03741301

Send the complete reference group, confirmed voltage, Hatz 1B, 1D, 2L, 3L and 4L diesel engines, removed-part photos, measurements and order quantity for a fitment-focused B2B quotation.