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spot goods Woodward 1751-6058 Dual-Coil Fuel Shutoff Solenoid, Engine Emergency Stop Actuator

  1. 1751-6058B: Revised 24V version with enhanced EMI suppression
  2. 1751-12E2U1B1: 12V dual-coil shutoff solenoid
  3. 1751-24E2U1B1: Standard 24V base model
  4. 1751ES-24E7U1B1S5: ES series improved thermal variant
  5. SA-4984-24: Cross-referenced equivalent shutoff actuator
  6. 1753-12E2U1BS1: 12V marine ignition-protected model
  7. 3864274: Cummins drop-in replacement solenoid
  8. 1751-6060: High-temperature 24V variant for exhaust-proximity installation

 

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Description

Woodward 1751-6058 Dual-Coil Fuel Shutoff Solenoid, Engine Emergency Stop Actuator

 

Product Description

The 1751-6058 is a Woodward dual-coil pull-and-hold fuel shutdown solenoid, designed for diesel and gas engine emergency fuel cutoff. It adopts a two-stage coil architecture: a high-current pull coil for rapid plunger actuation, and a low-power hold coil to maintain shutdown status after triggering. Widely deployed in gensets, marine propulsion, heavy-duty industrial engines and turbine auxiliary safety loops. It provides reliable positive fuel shutoff upon trip signals, compliant with engine safety protection requirements.

1751-6058

Technical Parameters

Item Specification
Manufacturer Woodward
Model 1751-6058
Coil Type Dual coil (Pull + Hold)
Rated Voltage 24 VDC
Pull Coil Peak Current ~10 A (short-duration)
Hold Coil Operating Current ~0.8–1.2 A
Actuation Time ≤150 ms
Housing Material Die-cast aluminum, sealed construction
Insulation Class Class H
Operating Ambient Temp -40 ℃ ~ +85 ℃
Shock & Vibration Compliant with SAE J1455
Ingress Rating IP65
Termination 3-wire: Pull, Hold, Common
Mounting Direct flange mount to engine fuel pump
Weight Approx. 0.75 kg

 

Recommended Alternative & Related Models (8 pcs)

  1. 1751-6058B: Revised 24V version with enhanced EMI suppression
  2. 1751-12E2U1B1: 12V dual-coil shutoff solenoid
  3. 1751-24E2U1B1: Standard 24V base model
  4. 1751ES-24E7U1B1S5: ES series improved thermal variant
  5. SA-4984-24: Cross-referenced equivalent shutoff actuator
  6. 1753-12E2U1BS1: 12V marine ignition-protected model
  7. 3864274: Cummins drop-in replacement solenoid
  8. 1751-6060: High-temperature 24V variant for exhaust-proximity installation

 

Compatibility & Installation Traps

Compatibility

  • Matches most heavy-duty diesel/gas genset engines with mechanical fuel injection pumps.
  • Works with Woodward 505 / 505E turbine controllers, engine safety trip relay systems and PLC discrete trip outputs.
  • Signal source: dry contact trip relay; not compatible with continuous high-current outputs without intermediate relay isolation.

Critical Installation Traps

  1. Voltage Mismatch Risk: Never apply 24V to 12V coil versions; pull coil will burn out within seconds. No simple resistor conversion is available.
  2. Pull Coil Duty Limit: Pull coil is only rated for transient pulse. Continuous energization of pull coil causes permanent thermal damage. Control circuit must switch automatically to hold coil after actuation.
  3. Mechanical Binding: Plunger must fully bottom after pull-in. Partial stroke leads to coil overheating and incomplete fuel shutoff.
  4. Wiring Resistance: Excessively long thin wires create large voltage drop; insufficient pull force fails to trigger shutdown. Use ≥14AWG copper for power leads.
  5. ESD & Grounding: Static damage to internal switching components during service. Always use anti-static bags and wrist straps. Separate solenoid power ground from instrument signal ground to avoid noise interference.
  6. Ignition Protection Requirement: Marine hazardous zone applications must select models marked “ignition protected”; standard 1751-6058 is not certified for Class I Div 1 locations.
  7. Reverse Polarity: Reverse DC polarity may damage internal diode protection circuits. Verify polarity with multimeter before power-up.

 

Standard Operating Procedure (SOP)

  1. Pre-installation inspection: Check housing for cracks, seal degradation, and coil resistance against datasheet tolerance (±10%).
  2. Mechanical mounting: Fasten solenoid flange squarely to fuel pump, confirm plunger linkage has no binding or excessive free play.
  3. Wiring: Terminate pull, hold and common leads strictly per Woodward wiring diagram. Install an interposing relay for controller output isolation.
  4. Continuity test: Power the circuit for a short test pulse; confirm audible plunger pull-in and latching. Measure hold current to validate coil switching.
  5. Functional trip test: Trigger the engine safety trip circuit, verify fuel supply cuts off reliably. Reset and confirm engine can restart after reset command.
  6. Periodic maintenance: Annual resistance check, visual seal inspection, and full functional trip test after every emergency shutdown event.
  7. Decommissioning: Isolate battery power first; store spare units in sealed anti-static packaging under dry indoor conditions.

1751-6058

Application Scenarios

  • Diesel/gas generator set emergency stop protection
  • Marine main and auxiliary engine fuel safety shutoff
  • Industrial heavy-duty engine over-speed, low-oil-pressure and high-temperature trip loops
  • Steam/gas turbine auxiliary fuel cutoff linked to Woodward 505 control systems
  • Off-highway construction machinery engine safety protection

 

Supporting Components

  • Interposing 24VDC trip relay
  • Anti-static service kit (wrist strap, shielding bags)
  • Crimp terminals and heat-shrink wiring harness
  • Plunger linkage adapter kit
  • Overcurrent circuit breaker (fast-acting for pull-coil protection)
  • Woodward 505View configuration software for trip logic setup
  • Replacement flange gasket and sealing O-ring set

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