What causes solenoid failure?

Solenoid coil failure can be caused by a number of factors. Applying an incorrect voltage to the coil will cause it to fail and may cause the coil to burn out. Electrical surges or spikes may also damage the coil. Sediment or other particles entering the valve may cause coil failure.

What happens if you jump the solenoid on a Bendix?

If you jump the solenoid and the starter spins freely the bendix is likely shot. if you engage the two large terminals on your solenoid it will just spin, you must also engage the small one to make the gear move forward and engage the engine. I do not believe you have to engage both small ones.

Can a leaking solenoid cause a spindle to stop spinning?

If no other performance issues present, check the solenoid that controls the spindle clamp/unclamp for air leaks. A leaking valve can cause the rotating spindle components to contact the stationary actuator. This friction welds the parts together and is not usually repairable without disassembly.

Can you tell me how to troubleshoot a solenoid?

I have a 12v solenoid with the standard two large terminals and it has TWO small terminals. When I jump across the two large terminals with a screwdriver, the starter motor just spins but does not engage the motor. Can anyone tell me how to troubleshoot it?

What should I do if my spindle is not working?

Verify adequate air pressure at spindle. Verify pull studs are the correct type for your spindle. If drawbar is in adjustment, attempt to adjust sensor according to machine tool manual. If no reading from the sensor can be obtained, remove sensor and test against any metallic object. If still no reading, contact PDS for replacement and assistance.

What to do if your solenoid reads out of limits?

Connect one meter lead to the solenoid’s ‘S’ terminal (the terminal that receives power from the ignition switch). Connect the other meter lead to the solenoid’s ‘M’ terminal. If your meter reads out of limits (OL), the solenoid is faulty and should be replaced.

When do you need to replace the starter solenoid?

If your meter reads out of limits (OL), the solenoid is faulty and should be replaced. You can also bench test both the starter solenoid and the starter motor. Remember: These days, the starter solenoid and starter motor usually come together as a single assembly. That means you may need to replace both if you find the solenoid is bad.