T125 Ignition Rotor Removal

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tbh37620
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Suzuki 2-Strokes: GSXRs,T125,T20,etc

T125 Ignition Rotor Removal

Post by tbh37620 »

I have a T125 I am working on and I have ran into an issue trying to remove the ignition rotor assembly so I can access the plate behind it so I can split the cases.

This flywheel/rotor has no external or internal threading or set of small threaded holes like I have seen on every other type. The large steel flywheel part is so close to the cases I cant fit the 3 jaw type pullers arms behind it. The only thing on there is three small holes for a holder tool I am assuming.

Any tips for getting this bad boy off? Thanks

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sportston
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Re: T125 Ignition Rotor Removal

Post by sportston »

I couldn't tell you for sure, but on the gt triples you insert a spacer rod and screw one of the 10mm engine mounting bolts (designed so that it has an extended tip to avoid thread damage. Only one of the engine bolts is designed this way) into the centre hole.
It acts as its own puller that way. But you may wish to verify that with someone that has T125 experience to check it is the same.
In the manual it suggests you can make your own 7mm diameter spacer rod (I can't remember the length. Be careful not to make it too short or you will accidentally damage the 8mm thread for the securing bolt in the crank). But don't do what I did and make it out of an old bolt with the head ground off. The metal was too soft and it got stuck in there. Use an old allen key (or drill bit?) instead and cut the head off that. It needs to be hardened steel.
Insert spacer rod, then screw in 10mm engine bolt until tight. Then give the end of the bolt a sharp tap with a hammer.
I repeat; verify this is the same on the T125 before you attempt this. I don't have experience with that model and it might be different.
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markush
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Re: T125 Ignition Rotor Removal

Post by markush »

Hi!

If there are threads in the three holes, you possibly can use a tool like the one for GT500:
09930-30190
Rotor remover + several attachments to fit to different generators
http://www.alpha-sports.com/tools/Suzuki-Tools.htm

What about the ignition cam? It should be removable. Isn't a larger thread behind it?

bye
Markus
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Re: T125 Ignition Rotor Removal

Post by dollydog »

yip, that's the way. tighten up and then TAP with a hammer [small one will do]. tighten a bit more, another tap. it should fall off.
failing that you could always use a bearing puller/splitter, like one of these:
https://www.ebay.co.uk/itm/14pc-Bearing ... Swa3BZ~Q74" onclick="window.open(this.href);return false;
cheers, dd.
GTS250 road registered. TS250 engine, Ramair frame.
GT250 big bang road registered. Both pistons fire the same time. USD forks.
GT285 road registered. Overbored - 58mm and TS125 +2 pistons fitted.
GT10 road registered. '65 T10 engine, GT250 frame.
tbh37620
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Re: T125 Ignition Rotor Removal

Post by tbh37620 »

Well I got it off. That ignition cam portion does come off. I found that out after trying the spacer rod method which did not work.

Once the ignition cam portion came out it revealed a threaded hole. I actually used the inner portion of my Tusk puller and it came right off. Hope this helps a future T125 owner.

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I am ordering a parts catalog and service manual tonight since I cant find a free PDF one online.
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Re: T125 Ignition Rotor Removal

Post by sportston »

Ah, so the same principle as i suggested but without a spacer rod needed and using a much fatter bolt.
Glad you got to the bottom of it. Well done.
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markush
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Re: T125 Ignition Rotor Removal

Post by markush »

So it's like at the T/GT250/350... generator rotor.
There you can use the rear wheel axle bolt as puller.
May be, you could have done this in the same way.
sportston
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Re: T125 Ignition Rotor Removal

Post by sportston »

Its very clever of the Japs to think of that. Cunning fellows, wot?
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