Post by: SDCR john on December 07, 2019, 06:35:28 PM
The gear oil had about 6000 miles since changed last fall. Should I be concerned about this amount?
Post by: johnny on December 07, 2019, 09:55:33 PM
very fine shavings about 2 peas wurth on the drain plug in 6000 miles means you needs full rebuild immediately... dont turn a wheel... dont even start it... signifficantly concerned...
what gear oil you using in there...
j o
Post by: Chaos on December 07, 2019, 10:11:15 PM
Post by: Laitch on December 08, 2019, 07:52:12 AM
I removed an amount equal to about 2 peas.2 ripe snow peas or 2 ripe black-eyed peas?
Post by: SDCR john on December 08, 2019, 07:53:24 AM
Post by: SDCR john on December 08, 2019, 07:56:38 AM
Sorry for lack of clarity when assessing the metal shavings metric. These were the size of two "snow peas".
Post by: Laitch on December 08, 2019, 08:39:35 AM
Post by: johnny on December 08, 2019, 08:39:49 AM
poast up a photo...
and for gawdsakes getts a bigger magnet..
how many snow peas is this...
motobrickshavingsafter6000dealerservicesmiles.jpg (40.04 kB . 600x450 - viewed 1702 times)j o
Post by: Chaos on December 08, 2019, 09:08:04 AM
Post by: SDCR john on December 08, 2019, 09:26:00 AM
Since the previous gear fluid was changed under the last owner, at a BMW shop, I cannot say with any certainty, exactly what gear oil was used.
Johnny, The picture that you posted looks very similar to what my drain plug looked like yesterday. About the same amount of swarf.
Post by: johnny on December 08, 2019, 09:48:28 AM
its a lemon... dealer bought less than a year ago... id return it for full refund...
j o
Post by: Laitch on December 08, 2019, 10:24:43 AM
- Disassembly of the transmission for inspection.
- Refilling of the transmission with high quality gear oil then inspection of the drain plug at riding intervals for more metal deposit.
- Purchase of a used transmission as backup.
- Negotiation of a refund from the seller.
Post by: SDCR john on December 08, 2019, 10:29:29 AM
(A) Its a K75 S, not an RS.
(B) The situation involves the Differential, not the Transmission.
Post by: johnny on December 08, 2019, 10:30:27 AM
s or rs does not matter...
transmission... i thought he said differential... what is the part number of said differential... i gotts to look it up... betts its not oe...
oh my... its worse than i thought... may as well part it out now...
and for gawdsakes send a sample to a chemical engineering metallurgy scientist to determine if that has to disposed of at a hazmat superfundsite...
hold on... lemme take a second look...
secondlookatmetalpsnowpeas.jpg (52.73 kB . 768x522 - viewed 923 times)you could putta nonmagnetic drane plugg in there and stop your freaking and continue motobricking...
j o
Post by: SDCR john on December 08, 2019, 10:32:25 AM
The bike was serviced at a BMW dealer, not purchased there. I bought the bike from an acquaintance, and I don't want a refund.
greetings...
its a lemon... dealer bought less than a year ago... id return it for full refund...
j o
Post by: caveman on December 08, 2019, 11:17:42 AM
I would open it up and inspect the "big ball bearing" and look for signs of bearing turning in housing or preload shims pealing out from behind the bearing.
FWIW, I had a good bit of shavings come out of my 100rt when I first got it after inspection I've run it 40k and sill going.
Good Luck!
Post by: SDCR john on December 08, 2019, 11:56:22 AM
I checked for side by side play, (9 and 3 o'clock). Nothing that I can feel.
I have a local BMW tech taking a look at the FD, as I pulled it off the bike yesterday. I did notice a less than smooth rotation of the final drive , after it was removed. I am awaiting word form the tech when he has time to look at it.
Is there any side to side play on rear wheel?
I would open it up and inspect the "big ball bearing" and look for signs of bearing turning in housing or preload shims pealing out from behind the bearing.
FWIW, I had a good bit of shavings come out of my 100rt when I first got it after inspection I've run it 40k and sill going.
Good Luck!
Post by: Laitch on December 08, 2019, 03:06:38 PM
After searching for about a year for a nice iteration, I found a very low mileage 1990 Titan Blue K75S.Clearly I'm the under-achievement group of your followers and have a lot of catching up to do. In 2017 you seemed to indicate that you purchased a 1990 K75S and changed all its fluids. What happened to that one? We can both agree though that your moto doesn't have a differential unless it's a trike. Did I miss that detail too?
Changed the filters and fluids, and have put a few hundred miles in just a couple of weeks.Laitch, (A) Its a K75 S, not an RS. (B) The situation involves the Differential, not the Transmission.
Post by: johnny on December 08, 2019, 03:09:49 PM
hold on... its notta tryke... whats in gawdsakes is going on here... you gotts car tiors on that thing...
1) whats the vin...
2) whats the differential part number...
3) is there a stall kit in that drive trane....
4) where are the photos...
j o
Post by: SDCR john on December 08, 2019, 03:28:10 PM
So the blue 1990 was sold. This past spring, I bought a 94 yellow K 75 S, so the bike in this thread is a 1994 Yellow K75S.
I was referring to the Final Drive, as a "differential" early on, my mistake.
I don't think I have any "followers", not sure where you are going with that reference.
Clearly I'm the under-achievement group of your followers and have a lot of catching up to do. In 2017 you seemed to indicate that you purchased a 1990 K75S and changed all its fluids. What happened to that one? We can both agree though that your moto doesn't have a differential unless it's a trike. Did I miss that detail too?
Post by: Laitch on December 08, 2019, 04:26:20 PM
I don't think I have any "followers", not sure where you are going with that reference.I'm a follower of yours every time you post. I don't need to go anywhere but here for that; however, I'm not yet a disciple. :-) That would take a miracle or two—like changing swarf into sardines.
Post by: billday on December 08, 2019, 07:11:11 PM
Post by: daveson on December 08, 2019, 08:19:41 PM
I would consider taking it back before he looks at it. Since it's low mileage, there is possibly nothing wrong with it.
Post by: Laitch on December 08, 2019, 08:37:39 PM
Hopefully that's the case, then it doesn't seem so bad.It doesm't seem so bad that no oil was put into the final drive, it doesn't seem so bad that John or somebody else was charged for oil that wasn't put into the final drive, it doesn't seem so bad that oil was used for so long it developed the lubricating quality of dishwater, or it doesn't seem so bad that a final drive was operated without lubrication until it started producing metallic hash?
Post by: daveson on December 08, 2019, 08:55:48 PM
I doesn't seem so bad if that amount of shavings occurred over 40,000 miles.
If that amount occurred over 6,000 miles, that's bad.
It's hard for us to believe, because we love our bricks, but there are people out there who don't even know that the final drive takes oil.
A bloke asked me once if I could get his chainsaw going. I didn't ask the obvious stuff cause he was a DIY type, but eventually I did ask when did you last clean the filter. He said never, didn't know it had one. Another bloke who ran his Husky chainsaw with less oil to blow it up for a refund. Didn't work so he ran it with no oil, still didn't pack up. It's hard to believe but some weird shit happens sometimes.
Post by: Chaos on December 08, 2019, 09:17:25 PM
Post by: Scott on December 08, 2019, 09:22:24 PM
Post by: Laitch on December 08, 2019, 09:45:25 PM
It's hard for us to believe, because we love our bricks, but there are people out there who don't even know that the final drive takes oil.Out there? They're in here! Furthermore, loving a Brick seems slightly perverse and undoubtedly abrasive, so count me out. :-)
What is the capacity, something like 800cc's?250cc for the final drive.
Post by: Laitch on December 08, 2019, 09:50:57 PM
Another bloke who ran his Husky chainsaw with less oil to blow it up for a refund. Didn't work so he ran it with no oil, still didn't pack up. It's hard to believe but some weird shit happens sometimes.The best way to ruin a Husky saw is run low octane gasoline in it.
Post by: billday on December 08, 2019, 10:05:14 PM
The best way to ruin a Husky saw is run low octane gasoline in it.
Don't ask you how you know?
Post by: SDCR john on December 09, 2019, 06:47:27 AM
The pic with the swarf, is not the one from my bike. I referenced it, because the volume is similar. The swarf on my drain plug, although similar quantity, was of the very fine, granular type. As I mentioned, I have a Independent BMW tech taking a look, I will post his diagnoses when he gets a look.
Thanks for your response to this issue.
The material on the plug looked fairly alarming to me, usually it's fine pasty stuff, yours looks like swarf from a drill press after drilling metal, but if the final drive feels okay, and doesn't make noise, why not change oil and look in another 500 miles and re-evaluate then. What is the capacity, something like 800cc's? Keep an eyeball out for another final drive in the meantime. That's what I'd do at least, good luck.
Post by: johnny on December 09, 2019, 07:42:14 AM
i am earths foremoist independent internet bmw tech... i says put a nonmagnetic drain plug in there and fill it up with mobil 1 synthetic gear lube ls 75w-90 and stop your freaking and continue motobricking...
is your aaa premier rv membership up to date...
j o
Post by: billday on December 09, 2019, 08:32:23 AM
Furthermore, loving a Brick seems slightly perverse and undoubtedly abrasive, so count me out. :
Oh, a Brick. At first I thought you said a Buick.
Post by: Scott on December 09, 2019, 09:05:57 AM
Scott,Okay I see, could be the last mechanic didn't clean the plug last oil change or two. Who knows on a used motorbike. You're forming a baseline now for the bike. I would change the oil frequently, small capacity, inexpensive gear oil and see how it goes. It will be interesting what the BMW expert thinks. My old Husky always has a fuzzy plug and it"s an 1982, still shifts fine. I change it's oil every other ride. cheers.
The pic with the swarf, is not the one from my bike. I referenced it, because the volume is similar. The swarf on my drain plug, although similar quantity, was of the very fine, granular type. As I mentioned, I have a Independent BMW tech taking a look, I will post his diagnoses when he gets a look.
Thanks for your response to this issue.
Post by: Laitch on December 09, 2019, 09:29:42 AM
It will be interesting what the BMW expert thinks.If this technician has the final drive disassembled on his bench, he'll probably indicate it needs a new part or two, and you probably should concede to that.
Post by: SDCR john on December 09, 2019, 12:48:34 PM
Being a 25 year old machine, occasional repairs are expected. It has been a terrific machine, and I plan to keep it.
If this technician has the final drive disassembled on his bench, he'll probably indicate it needs a new part or two, and you probably should concede to that.
Post by: SDCR john on December 09, 2019, 01:21:43 PM
Being a 25 year old machine, occasional repairs are expected. It has been a terrific machine, and I plan to keep it.
If this technician has the final drive disassembled on his bench, he'll probably indicate it needs a new part or two, and you probably should concede to that.
Post by: johnny on December 09, 2019, 01:49:19 PM
a technician would fill the differential with marvel mystery oil and run it in 5th gear on the centerstand for and hour... drain it... fill it with mobil one and charge you $800 for parts and labor rebuild...
j o