Tef diesel starter

[12 bore]

As the weather was so rubbish today went in workshop to work on the diesel Fergie I have had in bits to do clutch. Iput the tractor back together a while back but been too busy to give it a run up. It' got a brand new battery but it refuses to even consider turning over not even a clicking at solenoid nothing. Tried shorting across terminals on solenoid but no joy, battery is good checked on multimeter. All worked ok before being split, any ideas I'm stumped!

 

[Mursal]

Just missing something simple.
Best to connect multimeter down at starter, but no matter where it is connected.
Check voltage when you go for a start?

If you have full battery voltage
Use a jump lead to connect starter to battery?

 

[12 bore]

I will try that tommorow and check voltage with multimeter when I go to start her at the starter hopefully that will give me some idea so I can begin a process of elimination! I'm sure it is something simple , this particular tractor has been hard work from the start!

 

[colhonk]

Is the switch thing you have to press in with your knee working?

 

[MrNoo]

Is the switch thing you have to press in with your knee working?

That just allows the gear lever to engage the "start" position. I suspect it will be something to do with the rod going forward to the switch. Is it actually engaging the switch? put a multimeter across the 2 pins, you can then see if the contacts are being closed when you push the lever forward. Next port of call would be the solenoid.
On one of mine, regardless of how you adjust the rod, sometimes it will start on the lever and others you have to press the button on the end of the solenoid but I suspect this is something to do with a new starter I fitted.
Also the rod that goes forward to the solenoid switch can go "over centre" when apart, had a friends do this, something to do with the spring, I cannot actually remember but it was a pain in the backside.

 

[colhonk]

Ahh,knew it had something to do with getting the starter to work. Memory getting hazy as a long time since had owt to do with one.

 

[12 bore]

Well I have had another look this morning, rod from starter seems to travel to full extent so can engage switch. Unfortunately the solenoid is what looks to me like a cheap replacement one with no button on front, can' even take it apart to clean up like you can on the ones on my tea 20 and ted20. Battery ok but I'm not getting anything down at solenoid. I also tried bypassing everything and connecting jump lead directly to starter nothing happened apart from a bit of sparking on 1st attempt which soon stopped so now wondering if a combination of the two. It has been off for about a year as this project has dragged on!

 

[Mursal]

Well you must have power down at the starter when you made sparks?
Looks very like the starter, have you voltage down at the starter when you join the terminals to test?
Also check that you put all the earth straps back?
One from battery to engine or gearbox frame?

 

[12 bore]

Earth straps are down and tight I cleaned the connections up last night I even changed the earth strap and put it on fresh metal ( I made up a new battery tray as old one rotten) to make sure wasn't my earthing. There is a voltage at starter motor so I'm now thinking it' stuck through sitting there all that time. I put tractor in top gear and rocked back and forward to see if it was just not meshing to flywheel properly moved engine to different point so thats not stuck either! I did get a couple of clicking noises after doing this then nothing. So I'll take starter off in next couple of days and test it on work bench hopefully this is the issue.

 

[tomlad]

@MrNoo +1 my thoughts was the button in the rubber boot 'pilot switch ' ??
That is on a slide also / adjustable
Loosen 4 screws - slide .
Starter gear fully mesh fly wheel then touch button ....

 

[MrNoo]

@MrNoo +1 my thoughts was the button in the rubber boot 'pilot switch ' ??
That is on a slide also / adjustable
Loosen 4 screws - slide .
Starter gear fully mesh fly wheel then touch button ....

Yes they can be a pain to get right, especially if you use a new "repro" starter for some reason, never had any issues with the originals and they all start straight on the lever.

 

[Mursal]

Before I start going off on one, about how to test the motor is this your solenoid?

 

[MrNoo]

I suspect not, they are cylindrical and normally bolted (via a strap) onto the starter motor itself, some have a button you can manually press the plunger in to activate the starter and others dont.

 

[12 bore]

Yes I'm sure that is the one it's not the Lucas one with the button the front, definately not the cylindrical one that should be there Mr noo. The tractor was rough when we got it and has had a fair few bolt on parts put on over the years !

[/QUOTE]

 

[REStracTORATION]

Give the starter a snack with hammer to wake it up
Or remove and clean it internally the brushes fur up aagood wash out then you can bench test too
It will be something simple just a case of covering all basics

 

[8100]

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[Mursal]

Yes if the whacking or chain doesn't work ............

See can you earth a good big bulb by connecting it to the wire going into the motor from the solenoid.
If you had a spotlight bulb, something hefty?
So power the bulb from the battery terminal on the solenoid and earth it on the terminal going into the motor?
If the brushes are stuck, the bulb will be dim or wont light at all, so you can take the back off the motor with confidence.
The solenoid needs this earth path (before the motor starts to turn) to move the stationary starter gear and get it to mesh. So if it cant get this temporary earth it will just sit looking at you.

By the way to keep running the solenoid will have to be bolted to steel bodywork for an earth of its own?

See how you go ..........

 

[12 bore]

Thanks for the replies everyone, probably wont get a chance tommorow but will have a go Monday. I will try the bulb I'm sure I have something somewhere I can rig up to make a little test unit. The solenoid is bolted to top of starter and battery lead goes to top terminal bottom to starter after looking at the two little wires coming out the switch I'll change them I think they dont look the best. Probably a daft question mursal but what is the terminal with the lump of solder on in picture of solenoid is it an earth for starter switch. One wire attached to little terminal on solenoid opposite the bigger one then the other to one with lump of solder. It' just after poking and proding about today this appears to be loose.

 

[8100]

https://www.bing.com/videos/search?...9311A2A3CFA70B1CF9639311A2A3CFA70B1&FORM=VIRE

 

[Mursal]

This terminal?

If you connect that to the large terminal coming from the battery the starter motor should run, but wont be engaged with the engine.