Archive through July 31, 2013

[bjamison]

Dennis F - absolutely got the wiring diagrams in hand. Just asking about the difference in solenoids.

 

[aschumacher]

Guys, just a minor clarification...A solenoid is used because of the AMPERAGE drawn by the starter, not the voltage. Look at the wire sizes for the starter vs. regular wiring. Also it seems some solenoids use the housing/mounting plate for ground (-). Others, for whatever reason have a separate/extra? connection for (-). Just take a short wire and run it to a ground point. Maybe some situations occur where the solenoid is mounted maybe to plastic and need the extra wire. (I'm referring to non-Cub types of equipment)

 

[dfrisk]

You'd have to play around with the 4 terminal solenoid with a VOM meter to see where it has continuity. The stock 1650's solenoid grounds thru the case.

The glow plug relay on my PSD has four terminals, the two BIG power terminals, 12V & 100-200A in, and 12V 100-200A out, plus the switching terminal to activate it, plus another UNUSED terminal, and it's grounded thru the case & mounting bracket. Your 4-terminal solenoid may be similar.

 

[mfrade]

And lastly, some of the older solenoids used the last smaller connection to feed 12 volts to the ignition system during cranking. Very common practice for the Big 3 "back in the day"!

 

[dcmay]

I am looking for the procedure for changing a clutch on a 106.It was in the archives but can't find it now.The one I am referring to is the one where you slide the eng forward and proceed.Maybe you just depress the clutch and lock it,and remove and replace?
Thanks,
Dan

 

[bbranstetter]

Daniel,

Just look at the top of this page, right under the sponsor buttons where it says 'Frequently Asked Questions' and look under number 18.

Hope this helps

 

[kide]

Allen S: Whew! Thanks, I was about to jump outa my chair!!

Donald: Think of Electricity as water .... The flow rate (how fast) would be the equivalent of voltage, the gallons per minute (how much) would be the equivalent of amperage.... The solenoids are there to switch high amperage with a low amperage switch (remember all those old floor mounted starter buttons that were wired straight to the battery? - they were high amperage...)

 

[dtanner]

Well I must confess to knowing most times how and why things are and how they work. It seems this site is asking for some kind of engineering deg for a simple answer.The solenoids transfers a lot of power from the battery to the starter witch requires a lot of power to operate . Note the wire size needed . the contacts of a normal ignition switch can not withstand that that much power flow through it.

My apologies if I have led someone astray !

 

[dtanner]

This should end what the 4 wires do on a solenoid .

4 terminal ignition bypas solenoids ( most common) have 2 big studs and 2 little studs. 1 big stud to battery, 1 big stud to starter... case of solenoid is grounded to starter.. 1 little terminal ( usually S ) to switched power from an auto style spring loaded key switch.. the other small terminal , (usually marked I), is the ignition bypass terminal and gets wired to the coil to bypass the ignition resistor during starting.. When the key switch is let up, I and S will not have power, starter side of solenoid will not have power.. etc.

 

[aschumacher]

Ohhhh, special feed to the coil for starting. Was that for cars and maybe big tractors? Seems a little excessive for small tractors.