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massey ferguson 65 hot coil

G

[email protected]

Member
I have a massey ferguson 65 with a G 176 gasoline engine.It has been giving all kinds of electrical problems lately when I turn the switch on the coil gets so hot it will blow the end out of coil.Has any one got a clue whats going on with this?thanks [email protected]
 
sounds like your talking about multiple coils. but if its the original coil just replace the coil.
 
(quoted from post at 17:16:42 01/22/22) I have a massey ferguson 65 with a G 176 gasoline engine.It has been giving all kinds of electrical problems lately when I turn the switch on the coil gets so hot it will blow the end out of coil.Has any one got a clue whats going on with this?thanks [email protected]
Click to expand...

So, how did this happen, was the engine running when the coil got HOT, or was the engine stopped?

As I'm sure you know, NEVER leave the ignition switch "ON" for more than a minute or two without the engine running.

With a 12 Volt system a "true" 12 Volt coil or a matching coil and primary resistor are needed, either setup is acceptable and limits primary current to 4 to 3.5 Amps or so to avoid overheating the coil and burning the points.

So what setup do you have?
 
The MF models did not use a resistor/coil system, are you using the RIGHT coil? And are the points gapped correctly? If point gap is too close that can cause more coil
heat too.
 
engine runs but not like it should it misfires ,just plain quits running and will restart after it sets awhile but does same thing all over again.I have replaced plugs ,wires,coil points ,manifold gasket'rebuilt carb I am out of options
 

Where are you getting your parts? Did you change the parts listed after the first coil failed or prior to the failure? Did you replace the condenser? Check for a short in the distributor primary stud insulation or wiring, you might have an intermittent short.
 
(quoted from post at 20:11:44 01/23/22)
Where are you getting your parts? Did you change the parts listed after the first coil failed or prior to the failure? Did you replace the condenser? Check for a short in the distributor primary stud insulation or wiring, you might have an intermittent short.
Click to expand...
ll of my parts came from tractor parts places and were listed for a mf65 tractor.changed condenser two times ,new distriibutor stud and wire.Do you think it could be in distributor?
 
(quoted from post at 10:55:48 01/24/22)
(quoted from post at 20:11:44 01/23/22)
Where are you getting your parts? Did you change the parts listed after the first coil failed or prior to the failure? Did you replace the condenser? Check for a short in the distributor primary stud insulation or wiring, you might have an intermittent short.
Click to expand...
ll of my parts came from tractor parts places and were listed for a mf65 tractor.changed condenser two times ,new distriibutor stud and wire.Do you think it could be in distributor?
Click to expand...

Tractor parts places = No brand? I would start with using Standard Motor Products (either their Blue Streak line or the Standard quality line, not the trade line) or NAPA's Echlin brand for points and condenser. Once they are in and the points gapped and open, check for continuity between the stud on the side of the distributor housing and the housing, it should be 0. If it shows continuity, there is a problem in the distributor. Always clean the point contacts with a piece of uncoated paper or a dollar bill, even new points may have a coating on them.

I asked if the coil failure was before or after the other parts were replaced as if it was after, it is likely related to that work.
 
After reading the comments, I believe you are being sold the wrong coil. The correct coil, 12 volt with internal resister, should work fine. As John T has explained on several occasions there are three coil types, a 6 volt, a 12 volt for use with an external resister(a 6 volt coil) and a 12 volt volt coil with an external resister, (actually a coil with more turns of wire). I believe that you are being sold a 12 volt coil for use with a resister(mislabeled). You can either acquire the correct coil or convert your tractor to the Delco by-pass system. I would do the latter. Get the ceramic resister that can be acquired at any auto parts store and install it in the ignition system circuit, run a wire from the unused terminal on your starter solenoid to the coil. This wire provides 12 volts to the coil only when starting.
 
A coil for use with no external resister should have a resistance of 3 ohms, a 6 volt coil will have a resistance of 1.5 (roughly)
 

Standard brand # UC 15 or NAPA # IC 14 are two that have the proper windings to use on 12-volt systems without needing an external resistor. (No coils currently manufactured have internal resistors; windings make them 6 or 12 volts). They should have something to the effect of: "12V No external resistor required", printed right on the coil.
 
(quoted from post at 13:14:19 01/24/22)
(quoted from post at 10:55:48 01/24/22)
(quoted from post at 20:11:44 01/23/22)
Where are you getting your parts? Did you change the parts listed after the first coil failed or prior to the failure? Did you replace the condenser? Check for a short in the distributor primary stud insulation or wiring, you might have an intermittent short.
Click to expand...
ll of my parts came from tractor parts places and were listed for a mf65 tractor.changed condenser two times ,new distriibutor stud and wire.Do you think it could be in distributor?
Click to expand...

Tractor parts places = No brand? I would start with using Standard Motor Products (either their Blue Streak line or the Standard quality line, not the trade line) or NAPA's Echlin brand for points and condenser. Once they are in and the points gapped and open, check for continuity between the stud on the side of the distributor housing and the housing, it should be 0. If it shows continuity, there is a problem in the distributor. Always clean the point contacts with a piece of uncoated paper or a dollar bill, even new points may have a coating on them.

I asked if the coil failure was before or after the other parts were replaced as if it was after, it is likely related to that work.
Click to expand...
after problem started
 

Is your distributor cap held on with two clips or two screws? The 65 used two different Delco distributors according to the parts book.
 
it has two clips that hold cap on . It is a delco remy model 1112583 distributor I have been checking napa for a coil with a listing of a 1959 MF 65 tractor g-176 engine all I can get are 6 volt coils and it doesn"t show any points
 
(quoted from post at 19:36:17 01/24/22) it has two clips that hold cap on . It is a delco remy model 1112583 distributor I have been checking napa for a coil with a listing of a 1959 MF 65 tractor g-176 engine all I can get are 6 volt coils and it doesn"t show any points
Click to expand...

With tractors and equipment going by application does not always work, especially if you are trying to use an online selector. Often the correct PDF catalog provides better info.

The ECHLIN # IC 14 coil, I posted earlier, should work.

From the ECHLIN "Unit Parts Guide for Electrical Systems"

For a Delco 1112583 distributor:
Points: CS763P
Condenser: RR174
Rotor: RR83
Cap: RR145

Those should be the right ones for your distributor.
 
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