Author Topic: KDX200 Seized swingarm pivot and suspension linkage  (Read 20988 times)

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Offline TJXK

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KDX200 Seized swingarm pivot and suspension linkage
« on: July 30, 2013, 01:57:32 PM »
My girlfriend got a 96 KDX200 from an old guy that had put a number of new nice shiny aftermarket parts on the thing.  We picked it up and it seemed pretty good until I went to grease the bearings in the rear.  They had turned to dust, and what hadn't turned to dust was seized up. 

Great.

So after a couple weeks of using penetrating oil and pounding on it, we decided to just cut the swingarm and suspension linkage off.  We found an 01 swingarm with the linkage attached for $60 on ebay, so we put it on order and I headed out to chop the bike up.

First the swingarm gets lopped off with the sawzall.


Next I went side to side on the left arm with a grinder.  I made one cut and then rotated it around and made another.  Then it hammered right off.


After getting that side completely off I was able to get some freeze off in there.  The bolt pounded right out after that.

Do these bearings look normal?  Of course I saved them because you could always use spares.  Hell, I might even put them back in to save a little money.


Next I cut as far through the linkage as I could and hammered the rest off. 


Next I made 3 lateral cuts with the grinder.  The disk couldn't reach in to get the edges without taking out the mount so a hammer and chisel separated what little was left.


Done!


Never again will I buy a bike without thoroughly going through the suspension.  I've never taken one a part until now, so it was a good learning experience I guess.


Offline TJXK

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Re: KDX200 Seized swingarm pivot and suspension linkage
« Reply #1 on: July 31, 2013, 01:40:12 PM »
Looks like her counter sprocket for the chain has lots of play.  Do those normally wear on the inside where it meets the shaft like that?  I removed it and the shaft looks normal.
« Last Edit: July 31, 2013, 03:01:10 PM by TJXK »

Offline TJXK

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Re: KDX200 Seized swingarm pivot and suspension linkage
« Reply #2 on: May 24, 2014, 07:47:44 PM »
I finally put this thing back together the other day.  It just needs a new filter and oil change.


Offline sandblaster

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Re: KDX200 Seized swingarm pivot and suspension linkage
« Reply #3 on: May 25, 2014, 02:03:19 AM »
Being in salvage I have seen many just like that if not worse.
Too bad you don't live a bit closer, we have gotten pretty good at getting them apart intact but not always.
Nice to see that you didn't give up.
I bet your wife is going to love that bike.
Bad counter sprocket?
Probably bad metallurgy on that one.
If your output shaft is good you just got lucky  8-)
« Last Edit: May 25, 2014, 02:05:34 AM by sandblaster »
The four stroke engine: That's one stroke for producing power and three for wearing the engine out.

Offline TJXK

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Re: KDX200 Seized swingarm pivot and suspension linkage
« Reply #4 on: May 25, 2014, 04:42:07 PM »
It's my girlfriend's, but who knows what could happen right?  :wink:

Anyways she wants to sell it because it's pretty heavy and awkward for her.  She really needed to start on a ttr125 or something along those lines. 

I want to keep it though, it's a sweet bike! We'll see what happens...

Offline Goat

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Re: KDX200 Seized swingarm pivot and suspension linkage
« Reply #5 on: June 09, 2014, 03:39:22 PM »
Nice looking bike. Glad to see someone else that isn't afraid to do some damage to fix it the right way :P

How tall is your girlfriend? Lowering it a bit may help the awkwardness for her. I believe the early to mid 90's KLX250 dog bones lowered it about 1.5-2 inches. Less suspension travel that way but in the trails (keeping it on the ground) it was fine. Longer dog bones = shorter seat height. Done that mod to a few bikes for the vertically challenged lol
It's hard to keep a drivers license riding a 2 stroke dirt bike on the street.  If you drive within the law they are VERY boring.

Offline queen of spodes

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Re: KDX200 Seized swingarm pivot and suspension linkage
« Reply #6 on: July 25, 2014, 05:09:37 AM »
Being in salvage I have seen many just like that if not worse.
Too bad you don't live a bit closer, we have gotten pretty good at getting them apart intact but not always.

I have a 88 kx125 stuck just like the OPs.  Are you putting the frame up in a press and driving the shaft out? 

Offline sandblaster

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Re: KDX200 Seized swingarm pivot and suspension linkage
« Reply #7 on: July 25, 2014, 05:42:51 AM »
I don't use a press as I have ruined frames doing that.
Soaking in penetrating oil for days is good but Heat is your best friend..
The four stroke engine: That's one stroke for producing power and three for wearing the engine out.

Offline queen of spodes

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Re: KDX200 Seized swingarm pivot and suspension linkage
« Reply #8 on: July 25, 2014, 05:57:08 AM »
I don't use a press as I have ruined frames doing that.
Good to know.. that was going to be Plan B. 

Soaking in penetrating oil for days is good but Heat is your best friend..

Do you dip the entire frame in some diesel (very light oil) or just spray every day and let that soak in?    I was going to make an SDS-MAX bit and try to get it started with my hammer drill.  Figure once I get it sliding it should work on out.   f**ker is seized up very tight at the moment.   

I don't really need the bolt out.. was going to break it down to see if I could salvage the cases.  Frame is cracked in a few spots. 

Offline sandblaster

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Re: KDX200 Seized swingarm pivot and suspension linkage
« Reply #9 on: July 25, 2014, 09:20:05 AM »
I squirt the penetrating oil in every few hours during the day.
Sometimes I'll soak them for a week before I try.
It is shocking how little corrosion it takes to keep them from moving.
Again.... When they are really stuck, Heat is your best friend..
Might want to read this article...

http://www.oem-cycle.com/forum/viewtopic.php?f=40&t=549
The four stroke engine: That's one stroke for producing power and three for wearing the engine out.

Offline oldkoot

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Re: KDX200 Seized swingarm pivot and suspension linkage
« Reply #10 on: January 03, 2015, 03:26:13 AM »
anti seize helps some but after that many years good luck. Great job of not giving up on it.