pglaves
#13338
It is my carefully considered and deliberated hunch that this particular F800GS had been taken across at least one too many Hill Country low (or not so low) water crossings. I think it is time to cross examine the owner.
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Rear wheel bearings on a F800GS
- Thread starter Omega Man
- Start date
It is my carefully considered and deliberated hunch that this particular F800GS had been taken across at least one too many Hill Country low (or not so low) water crossings. I think it is time to cross examine the owner.
Hey Paul,Second owner who purchased from Wisconsin I believe. Bike in great condition overall, not seeing ride hard put up wet conditions.
I always ask folks about aiming that high pressure washer at places you shouldn't on some bikes as well as playing in creeks and rivers.
After re-reading the scary ADV thread and Woody's postings...the axle tube is a no brainer to replace if not at spec. Just would like the original dimensions to see how much may be missing from grinding.
The axle spacer rests against the bearing face and pushes against the circlips on outer side of bearings when all clamped down from what I gather
The axle spacer rests against the bearing face and pushes against the circlips on outer side of bearings when all clamped down from what I gather
Yeah, after looking at how it all laid out, it went back together fine today. Bearings dropped in place with freeze and heat.
Interesting that the two hub bearings were from Taiwan and the sprocket carrier was a SKF, the Taiwan bearings had more grease than the SKF, so all got a bit more rolled in anyways. All were BMW supplied.
The SKF had stamped numbering on the outer race, the Taiwanese were labeled on the grease seals, assuming the bearing spec.
I took pics of bearings, only the Taiwanese were legible... didn't proof my pic quality before install
The SKF was a 6204 if my brain is working and will work in all three locations according to other forum info. Laying the two different part numbered bearings on top and on side showed no physical difference to me, so still wondering why.
Here are BMW part numbers:
(2) Grooved ball bearing 3618534835
(1) Grooved ball bearing 33818543930
(2) Shaft seal. 36318561711
(1) Spacer sleeve. 36317695888
The SKF was a 6204 if my brain is working and will work in all three locations according to other forum info. Laying the two different part numbered bearings on top and on side showed no physical difference to me, so still wondering why.
Here are BMW part numbers:
(2) Grooved ball bearing 3618534835
(1) Grooved ball bearing 33818543930
(2) Shaft seal. 36318561711
(1) Spacer sleeve. 36317695888
Bumping an old thread.
I have (partly) read the thread over at adv but it’s tremendously long. I am trying to find out whether this problem cropped up on the F700GS too, or was it primarily the earlier F800GS and F650GS, before the refresh/update in 2013?
Out riding the last few times, on slow-speed deceleration with clutch engaged, I noticed a noise that reminds me of the bad wheel bearing noise my VWs from the ‘80s used to make all too often. Problem is, I can’t say for sure whether it’s a new noise, or has been there all along and I’m just now noticing it. Or whether it’s a normal drive-line noise.
Reading the various threads, I haven’t seen anyone describe the classic bad wheel bearing noise (a sort of thrumming) as a warning symptom prior to bearing failure. I’ve only seen reference to crunchy grinding bearing noise. I don’t have anything like that.
I have (partly) read the thread over at adv but it’s tremendously long. I am trying to find out whether this problem cropped up on the F700GS too, or was it primarily the earlier F800GS and F650GS, before the refresh/update in 2013?
Out riding the last few times, on slow-speed deceleration with clutch engaged, I noticed a noise that reminds me of the bad wheel bearing noise my VWs from the ‘80s used to make all too often. Problem is, I can’t say for sure whether it’s a new noise, or has been there all along and I’m just now noticing it. Or whether it’s a normal drive-line noise.
Reading the various threads, I haven’t seen anyone describe the classic bad wheel bearing noise (a sort of thrumming) as a warning symptom prior to bearing failure. I’ve only seen reference to crunchy grinding bearing noise. I don’t have anything like that.
I never heard a noise. I just stumbled on what I thought was a bad bearing during a finger spin changing a tire.
It’s not a problem that “crops up”. It’s just a maintenance thing....... of the fact that it seems the “sealed” bearing “seal” would work better if grease was sealed in.
OM
It’s not a problem that “crops up”. It’s just a maintenance thing....... of the fact that it seems the “sealed” bearing “seal” would work better if grease was sealed in.
OM
Reading through the adv thread, the bearing problem seems to crop up very unexpectedly. Even on low miles bikes. Lots of close calls reported, and some serious accidents too.
I still have not found an answer to whether it’s an issue on the F700GS. The F7 runs allow wheels, not spoked rims, so there are certainly differences in the driveline. Also, most of the F8 problems I’ve read about were on pre-2013 bikes.
I guess I’ll keep plowing through the threads, and studying the parts schematics.
If you are that concerned, just take the wheel off and do some investigation. I get some satisfaction, and skinned knuckles, when I find something messed up as a result of another task...... like the 2 hoses that had gone bad when I was changing the spark plugs.
OM
RadioFlyer
Right2Repair
FWIW I have been following the FXX0GS bikes closely for 10 years on three different fora and the only bearing issues I saw were with the F800GS either due to the clearance problem or water/dirt ingress.
Sent from my SM-T813 using Tapatalk
Sent from my SM-T813 using Tapatalk
Interesting, I’m the last rider to be out in the rain and don’t really wash the bike
Sometimes I clean it off with some specialty cleaner but nothing fancy. You can see from my picture that the grease is, as far as I’m concerned, skimpy. Just a bad (under-greased?) bearing I guess.
OM
This is exactly the sort of info I was hoping to come across - - someone who has been following it for years and paying attention to patterns. (I hadn’t even heard of this issue until after purchasing the F7.)
Thank you very much, I really appreciate it.
RadioFlyer
Right2Repair
I was more referring to water ingress due to water and mud crossings and not rain or washing.Interesting, I’m the last rider to be out in the rain and don’t really wash the bike
You can see from my picture that the grease is, as far as I’m concerned, skimpy. Just a bad (under-greased?) bearing I guess.
OM
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