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Mechanics Choice: Improves Reliability and Enhances Performance at a value that beats OEM prices.

Yinglang specialized in excavator parts since 2003, offering wide range of aftermarket replacement parts used on different brands of excavators, through decade years of development, our products were successfully exported to more than 100 countries and received good reputation, we highly appreciated the continuous supports of all the customers from different countries, we will try our efforts to continue to provide reliable quality products at competitive price to serve our customers.

Electric parts can be supplied including pressure switch, stepper motor (throttle Motor, motor governor), solenoid valve, sensor, flameout solenoid (stop solenoid, shutoff solenoid, shutdown solenoid), starter switch, computer board, monitor, starting motor, alternator etc.

--Every part is manufactured to OEM specifications for perfect fit and performance

--Serving mechanics and do-it-yourselfers in all 50 U.S. States plus around the globe

--Pledge of total customer satisfaction is backed with a 1-year warranty

--Factory direct, money-saving pricing keeps more money in your pocket

Our company is a Recognized Engine and Turbine Retrofitter, and our goal is to provide quality products, solutions and technical services to the Turbo machinery industry and our customers. In addition to innovative solutions for prime movers, we provide support and enhancement to Diesel and Natural Gas Engines as well as Steam and Gas Turbine Control Systems. We also provide products and systems for all business segments including Compressor Anti-Surge Controls, Condition Monitoring, Power Generation and Distribution.

Our aftermarket solenoids are manufactured to exacting OEM specifications for perfect fit and superior performance. We make sure only premium materials and uncompromising craftsmanship go into every electrical unit. A new YL Electrical solenoid will restore precise, quick starts in a vehicle when it’s time to replace an older one.

How Solenoids Work: 

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Solenoids work as electromagnetic switches, serving as the link between the ignition and starter. The solenoid engages when the ignition key is turned, creating a link to allow for the flow of electricity to the starter. Once the engine starts, the solenoid disengages, cutting off the flow of electric. Solenoids have wire coils that wrap around a mobile core. As electricity travels through the coil, the core becomes magnetized, which creates force to push the mobile core outward to engage gears on the starter.

Factory-Direct Pricing:

Because we are the factories, we can save you money by offering these electronic components at value prices.

25 Years of Satisfied Customers:
We’ve been in the business of supplying quality electrical components for over 25 years. Our long history has taught us that you only keep customers satisfied by supplying quality products and outstanding service.

We proudly stands behind the quality of our products with our total-confidence 1-year warranty. Yes, you have a full year to make sure your solenoid relay meets your expectations.

Description:

Name: Shutoff Solenoid, Shutdown Solenoid, Fuel Stop Solenoid, Shutdown Solenoid Valve, Stop Solenoid Valve, Fuel Cutoff Solenoid Valve, Solenoid Switch

Model: 3930234 SA-4335-24 3930233 SA-4335-12 3923680

Voltage: DC 12/24V

Material: Iron

Replaces These Part Numbers:

Yinglang engineers are experts in engine and turbine controls because we understand your equipment. Yinglang offers simplex, duplex or TMR architecture control systems for a variety of applications as well as electronic engine control systems for any application operating on diesel and/or gaseous fuel. Yinglang service department is available 24/7 to provide parts, technical support, or emergency service. 

Solenoid Troubleshooting Guide

Internally & Externally Switched Solenoids

Push & Pull Type Solenoids

Solenoid Voltage Check  

Improper voltage affects the solenoid’s work output. Low voltage reduces the work output. When the voltage is excessive, it overheats the solenoid and destroys the insulation on the coil and burns out the solenoid. Check if the solenoid is getting proper voltage. 

1.       Check pull in voltage available to solenoid during cranking, attach the clips of a voltmeter to the Pull and Common wires in the harness. Hold the run/stop lever in the stop position. Turn the key Switch to “Start” and crank the engine for a few seconds until you get a steady reading on the meter. The voltage must be a minimum of 75% of rated voltage.  If the voltage is below these values (10 Vdc for 12 Vdc units and 20 Vdc for 24 Vdc units), the solenoid may not pull in.

2.       Check the hold-in voltage available to the solenoid during cranking, attach the clips of a voltmeter to the Hold and Common wires in the harness. Hold the run/stop lever in the stop position. Turn the Key Switch to “Start” and crank the engine for a few seconds until you get a steady reading on the meter. The voltage must be a minimum of 75% of rated voltage.  If the voltage is below these values (10 Vdc for 12 Vdc units and 20 Vdc for 24 Vdc units), the plunger will not hold in at the moment cranking stops and the Key Switch is released to the “Run/On” position.

3.       Check the hold-in voltage available to the solenoid when NOT cranking, attach the clips of a voltmeter to the Hold and Common wires in the harness. Turn the Key Switch to “Run/On” and check the voltage. Check continuity between the “Start” and “On” positions on the key switch. The voltage must not be below, and must remain at, a minimum of 75% of rated voltage.  If the voltage is below these values (10 Vdc for 12 Vdc units and 20 Vdc for 24 Vdc units), the plunger will not hold in.

4.       Check the voltage between the Pull and Common wires when NOT cranking, attach the clips of a multimeter to the Pull and Common wires in the harness and check the voltage. There should NOT be any voltage because the Pull-in coil is only energized when the Key Switch is in the “Start” position.  If there is a voltage reading, disconnect the solenoid to prevent burn-out. Inspect application wiring to locate the problem.

The solenoid must remain in-circuit (connected to the wiring harness) when checking the voltage. For externally switched solenoids, you can make a jumper harness with mating connectors to check the voltage while keeping the solenoid connected to the wiring harness. For internally switched solenoids, use the positive (+) and negative (-) terminals to check the voltage.  For externally switched solenoids, the typical wiring scheme is as follows:

NOTE Some specially manufactured solenoid units may not follow the general wire color scheme presented above.

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