Beiträge von Thor_du
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Thanks for the tip, that sounds plausible.
I only replaced parts 13–18 and did not separate the connection between cartridge 8 and fork foot 2. If I remember correctly, there were also some parts in the middle of the cartridge that could create different installation heights. I suspect it might be parts 36 and 39, and maybe they are twisted relative to each other.
I was a bit reluctant to follow that idea, because it would probably mean that I have to remove the fork leg again, drain the oil, pull off the outer tube, check the seating, and put everything back together. Or is there an easier way?

The fork cap not bottomed on the cartridge rod is a very very very common issue on these forks when it's done by hobbyists on bad shops.
The procedure is explained in the manual btw, to bottom the fork cap on the cartridge rod first etc.
How did you remove the springs ? And also how did you put them back on? -
This is out of a 690 ENDURO but it's the same fork in your DUKE 3 apart from the cartridge that can be opened from top (ENDURO) AND you have a very long aliminium part for preload on yours.
Otherwise same or similar components.
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Hello everyone,
After a fork service, I have the following problem on the left fork (screw cap 48600558S, M51x1.5 complete):
When I fully close the rebound damping (clockwise, hard), there's no end stop – the needle spins completely out of the thread and becomes loose. In the "open" direction (counter-clockwise, soft), the end stop seems to be provided by the cap itself. Clicks are audible, and the thread engages. Everything else on the right side is normal.
The needle has already been reinserted twice and the shaft reassembled: the end stop "open" was present each time, but as soon as I turn it fully towards "closed", the needle turns completely out again.
Questions:
- What structurally limits the end stop to being "too hard" – does the needle rest on the bottom of the adjusting rod, or is there another mechanism?
- Has anyone experienced this problem after a fork service and knows what's missing or incorrectly positioned?
Thanks!
Sorry my German is rubbish I'll use English.
As a good starting point:
The rebound needle and its spring are in the midvalve as they should AND the rebound control rod protrudes about 5 mm (3 to 7mm) out of the cartridge rod and rebounds back to its original position when you push it with your thumb.
Then, you need to screw by fingers' force only, the spring guide (long black plastic part) onto the rod completely until it bottoms, then you put the spring back on, then you screw the fork cap on the cartridge rod (with the rebound adjuster backed all the way out).
The spring guide goes up after you've bottomed the fork cap on the cartridge rod this is normal, you put it at the lowest place first so it doesn't bother you but it's not its final position.
The interior of the fork cap needs to bottom on the cartridge rod first before you bottom the flat part of the fork cap on the spring guide.
In fewer words, your spring guide isn't low enough and therefore the fork cap isn't bottomed on the rod, (only the spring guide is bottomed on the fork cap) so at some point when clicking the adjuster in, the pusher needle (in the fork cap) can't reach the rebound control rod anymore and this is why there's no end when clicking the adjuster in (closing it).
Hope it's clear enough.
If this doesn't clear your problem then maybe you have messed up the position of the brass parts in the fork cap. -
Danke für die Hilfe, Jungs, ich werde mir demnächst auch einen ansehen. Gibt es denn nirgends Ersatzdisplays für diese Tachometer?
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Um das Thema erneut aufzugreifen: Worauf sollte man insbesondere beim Kauf eines älteren Modells, beispielsweise eines Modells aus dem Jahr 2008, achten?
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Entschuldigen Sie mein gebrochenes Deutsch.
Ich habe das mit der Nummer gefunden, die Sie im Titel angegeben haben.Ich bin mir aber nicht sicher, was sie bedeutet; da steht nicht „ABE“.
22-seitiges Dokument
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Sie können es herunterladen, indem Sie hier die Teilenummer eingeben: https://www.ktm.com/de-ch/service/manuals.html im die "Anleitungen für PowerWear & PowerParts" section. -
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Hello
Can someone tell me (let me know) what year this engine (390) was manufactured?
9-938*05736*
Thank you very much
2019
9-938*05736* -
Did you modify the oil jet in the crankcase on the clutch side?
Do you put thin oil in it? Like 5W40 or something?
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You've either broken the oil membrane in the crankshafts's chamber or there's something stuck in it.
It's a classic on these, typical symptoms. I bet it's broken.
You can't see oil in gearbox because everything's in the crank's chamber, it's also what's making the huuuge engine braking.
The pirate has a video on it.pasted-from-clipboard.png
Have you already drained the oil from the engine?
If yes how much did you drain from the front oil screen? Like an espresso cup or more like a liter?
EDIT: lowrnge I didn't read the last part, yeah the membrane is gone. 100% sure.
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Here's a picture of his broken shock.
In the meantime I got an answer from Wilbers, they still use 14 mm rod shocks.
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Thanks for your replies. The issue doesn't seem to be very well known; this defect doesn't appear to occur very often. The mileage might be contributing to the problem.
The part number is interesting; I've already seen the individual shock absorber at another shop. It would probably be the cheapest solution. However, the delivery date on the other site was in November. I'll inquire there.
The tip about Wilbers is also good!
I've now removed the defective shock absorber; it was removable piece by piece. I haven't gained any major insights. It's probably normal that the lower part in the swingarm is very difficult to move by hand. Anyone who wants to can interpret something into the fracture patterns.
A guy I know has had the same issue with his 1190 adv.
It's probably the only road going KTM with a 14 mm shaft, other bikes use 18 mm shaft (not talking about offroad bikes for kids, nor 125/390 DUKE or other Indian/Chinese made KTM, I'm talking about bigger bikes).
From the partsfinder and the setting lists I've seen it looks like they've gone back to 18 mm shafts on later models, I don't know what went through their mind at that time.
His shock failed at the same exact point, first leak but he rode for a week or two with the shock leaking and then it broke on a speed bump from what I remember.
I couldn't find a replacement rod at that time, not even mentionning seals for that 14mm rod.
Contrary to popular belief the shocks are serviceable.
Glad you are still alive, you could have killed yourself there, do you know what diameter they use for the replacement rod? Does it look bigger?
Sorry for the English hijack of the thread.
EDIT: Looks like they keep all the lower part so very little chance that the rod has been upgraded. -
That guy has a 690 SMC standing around and wants to put the suspension in his Enduro. Thats it. And it will work.
That's not what TLandi said nor asked, I was talking to him so were you (by the way) so I don't understand why you are now talking about Chrismc23.
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Its the travel, not the shock length
It is both, as per the setting lists.
It's minimal to the eye but once the shocks are fitted it's a clear difference.
The fact that they have gone for a softer spring makes that even worse but that's another topic. -
The shocks don't have a bladder and are not shorter.
Wrong on both.
2008 SMC and Enduro shocks have a bladder instead of an internal floating piston, it's probably the only KTM with a bladder from the factory as far as I know.
Later SMC, Enduro and Enduro R bikes don't have the same shocks.
2008 to 2011 SMC have 265 mm front and back for suspension travel.
2012 to 2017 SMC R have 250 mm at the back for total travel.
As per the setting lists, the shock are shorter on the 2012 to 2017 models.
2008 to 2011 ---> 95 mm shock stroke / 400 mm shock length (eye to eye) 265 mm at the wheel
2012 to 2017 ---> 90 mm shock stroke / 395 mm shock length (eye to eye) / 250 mm at the wheel
2008 690 SMC
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2016 690 SMC R
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2008 690 SMC
Bladder in shock
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Good Morning.
This is also about chassis differences. So, about the shock absorber on my '08 SMC. I find it quite bouncy and found my friend's 2012 more comfortable. My question is, since I want to get the bike to stop bouncing. Would it be a solution to simply use a shock absorber from a later model? Service or not, I'm not sure if I'd be happy with the shock absorber. I'm still very spoiled by my aftermarket Bitubo shock absorber on my Suzuki. What do you think?
Do you mean bouncy / mushy like on a cloud, always going up and down or bouncy like kicking back in your butt?
If it's mushy then close the rebound adjuster (bottom adjuster), like 4 or 5 clicks is a good beginning.
If it kicks back then you have other issues, tire pressure can also affect comfort.
This is a temporary fix, get it serviced, it's a shock with a bladder, not a floating piston, it needs to be serviced more often, not every 17 years.
Don't put a shorter shock from a 2012 to 2017 SMC R, the bike will push wide at the end of corners and you won't have a very good feeling with the front tire, the overall balance of your bike and the fork length are not made for that shock at all.
You also have very different seats so this contributes to the comfort btw. -
Yes this is normal on these forks. Depends of the years though, some have the exact same base valves (as for shims), some don't.
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Joe1961 problem solved?
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Programming and coding... It's about a 2024 SMC R 690... The motorcycle is under warranty and restricted to 30 kW. Now I have a second DME that's also only 30 kW, and I need to get full power out of it. I completely dumped the original DME with a flex flasher. I actually want to get the second DME to run at full power, and then I need some software and hardware for proper diagnostics so I can see service functions and live data.
You are probably way above what others have done and will do here.
This is the only other people (that I know of) that have done something similar to what you are trying to achieve.
---> https://www.advrider.com/f/thr…erpro-no-tuneecu.1408818/ Maybe contact them.
PS: Not the same bike, but same ECU.
---> https://advrider.com/f/threads…uke-1290-can-bus.1200087/ -
Lainer Suspension has got many parts including gaskets and O-rings.
Give that to your suspension guy.
https://www.lainersuspension.com/en/shop/shock-maintenance
The seal head is just an alumnium part that holds the seals, you can replace the whole assembly or dismantle it and replace the seals individually, lots of shops do that.
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