RK Tek head
- Thread starter Wypipo
- Start date
So remove all of the powder coating on the back of part 19?
Here is where I have the neutral connected straight from the battery. Is this right?
Attachments
I have 13.3v across the battery
I have 13.3 from the battery positive to the starter mount bracket where I have sanded all the points down to bare metal and ran the ground from the battery.
I have 13.3 from the battery postive to the negative of the starter relay
Starting to get pretty frustrating, I have tried everything. Next I will pull the motor cover off to see if the bearing has seized, but the bike will ?restart? after it is warm so I don?t think that is the problem.
I have 13.3 from the battery positive to the starter mount bracket where I have sanded all the points down to bare metal and ran the ground from the battery.
I have 13.3 from the battery postive to the negative of the starter relay
Starting to get pretty frustrating, I have tried everything. Next I will pull the motor cover off to see if the bearing has seized, but the bike will ?restart? after it is warm so I don?t think that is the problem.
I also have 13.3 from battery positive to this side of the ignition coil and bare metal on the frame. I have noticed some people run a wire from here to the starter mount bracket. Also the only negative lead from the battery is to the starter mount bracket. Not sure what else I could do. I have full battery voltage from the postive terminal of my battery to all of the negative/ground spots in the circuit.
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fred99999au
Member
I pulled the stator cover off today and removed the bearing and bevel gear that the motor engages with. One bearing shield is damaged from the factory, and the bearing is notchy. Can make out the brand through the damage on the shield. Rust spots on some of the gears.
The second shaft bearing feels dry and notchy.
Will remove the second shaft tomorrow and see what the bearing feels like.
Of course, none of this relates to an RK Tek Head.
The second shaft bearing feels dry and notchy.
Will remove the second shaft tomorrow and see what the bearing feels like.
Of course, none of this relates to an RK Tek Head.
fred99999au
Member
yes, the gasket fell to bits, so you will most likely need a new one.
I ground down a caged nut from a 19 inch rack cabinet to fit between the horizontal shaft and the bevel gear and used a washer stack and bolt to pull that beating out.
Looks like the other bearing and shaft might be a light press fit as well. No idea how I am getting that out yet. Going to see a mate at an engimineering place today.
I ground down a caged nut from a 19 inch rack cabinet to fit between the horizontal shaft and the bevel gear and used a washer stack and bolt to pull that beating out.
Looks like the other bearing and shaft might be a light press fit as well. No idea how I am getting that out yet. Going to see a mate at an engimineering place today.
SS109
Active member
That has to do with thermal expansion. Once the engine is warm the metal expands, which reduces the drag on the bearing so it can turn easier, hence allowing starts when hot but not cold.
Also will replacing the bearings be a permanent fix? Or will it eventually go back to the way it is now? Everything was brand new when I bought the bike so it seems to me like replacing these bearings will just make it brand new again but the same shitty design, so what is different after replacing them to stop it from seizing again?
Jakobi
Super Moderator
Search the interwebs on ktm starters.. You'll be swamped.. It's all the same shitty design... on theirs, and on the gassers.
You haven't specifically said how it fails.. or if you have I have missed it.
Is it binding and not turning the engine over? is it turning over but not firing?
SS109
Active member
I think GG got some slightly out of spec bearings from their supplier or something else is out of spec. Anyway, it seems those that have replaced the bearings have had good luck so far but only time will tell.
When cold it will bind and make the high pitch whining noise.
sometimes it will spin but not fire.
It will never start when cold.
It will never start when hot if its in gear
it only starts when hot if I kill it and immediately restart and in neutral. If I kill it and wait a couple minutes it wont start. if I kill it in gear and try to restart immediately it wont start.
It also wont start on the first kick anymore, now it takes 2 or sometimes 3 kicks. When I first got the bike it would start on the first kick. This is not a big deal but wondering if this could be related in any way.
This is really bumming me out. The bike is amazing everywhere else but this starter is getting frustrating. I was told by a rep and a dealer before I bought the bike that it would be fine with the new CDI and cables, but it seems the problem goes way beyond that. its too bad GasGas wont do more about the issue other than reflashing the CDI and giving you one cable then leaving the rest up to you. Ive been very vocal about how great this bike is but its getting hard when realizing how in depth the starter issue is.
I found replacement bearings online using the OEM parts finder. So I will be replacing the bearings with the same bearings that are new?
Are there replacement parts that are upgraded for the proper fit?
Basically im having a hard time figuring out why I would replace parts that are only 20 hours old with the same parts and expecting the problem to be fixed.
Sounds like it will be a revolving door of replacing parts if im expecting the starter to keep working.
What can I do different and what different parts can I get to actually solve the problem?
SS109
Active member
Like I said, sometimes companies get out of spec parts from a supplier. GG doesn't make bearings so they buy them from a bearing manufacturer and even the best sometimes lets a bad batch get out. The bearings might be common so you would need to cross reference them and see if there is an ever higher quality version available through a bearing house.
Do the bench testing and inspection before just replacing parts and see what you find out.
Do I need to pull the bendix cover off for any reason to remove and reinstall the starter? Just wondering so I can order a gasket if I need to.
Jakobi - no the only battery I have tried is a shorai 210 CCA
No need to pull any covers.
Just remove the two screws, remove the starter cover and pull back.
I had the same problem with my bike and my 2 cents goes to the starter.
Video with the original starter (the whining noise doesn?t sound so well, but it?s there):
https://www.dropbox.com/s/wounhilbgdq6tia/IMG_0024.MOV?dl=0
So nothing happening, just noises...
Then I got a new start from importers demo-bike...
https://www.dropbox.com/s/fa69lj3msyp4vm1/IMG_0027.MOV?dl=0
Spins and starts way better than on the first day.
So my guess is that based on your description it doesn?t help if you change the bearings, you?ll end up with the same problem, with new bearings.
Just for info, I had the CDI done, uprated battery done, cables done ?> no help. Starter done ?> yahoo!!!
Just remove the two screws, remove the starter cover and pull back.
I had the same problem with my bike and my 2 cents goes to the starter.
Video with the original starter (the whining noise doesn?t sound so well, but it?s there):
https://www.dropbox.com/s/wounhilbgdq6tia/IMG_0024.MOV?dl=0
So nothing happening, just noises...
Then I got a new start from importers demo-bike...
https://www.dropbox.com/s/fa69lj3msyp4vm1/IMG_0027.MOV?dl=0
Spins and starts way better than on the first day.
So my guess is that based on your description it doesn?t help if you change the bearings, you?ll end up with the same problem, with new bearings.
Just for info, I had the CDI done, uprated battery done, cables done ?> no help. Starter done ?> yahoo!!!
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