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Offline Dutchman81

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Ball joint boot
« on: July 19, 2015, 04:29:56 pm »
Found this boot at work at a cost of R7, took it home and fitted it to JR85 Gsa, cheap round and good to go again, if my phone will load the pics this time otherwise Mr T will you help again loading my pictures...
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Offline Cyclops

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Re: Ball joint boot
« Reply #1 on: July 19, 2015, 05:09:03 pm »
Just took my bike in for a service. Ball joint rubber has been foobar for 15000 000 kms. Justin of Motorradtec is very serious about not just replacing the boot when it wears but rather to replace the whole ball joint. Reason is that when the rubber boot goes, it is very likely that the ball joint itself itself is starting to wear. As this is a VERY critical safety item it is best to replace.
That said, it is a very expensive part. Hope my ball joint itself is  still good for a couple of thou still.
 

Online Knucklhead

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Re: Ball joint boot
« Reply #2 on: July 19, 2015, 05:38:11 pm »
Be carefull that joint is probably buggered as well check for play, had to replace mine too
 

Offline Dutchman81

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Re:
« Reply #3 on: July 19, 2015, 06:16:13 pm »
Thanks guys, been in the suspension trade for a while now and was the first thing that was checked, no play yet caught it in time, so for now it was a cheap round

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Offline DavidMorrisXp

Re: Ball joint boot
« Reply #4 on: July 19, 2015, 07:30:18 pm »
Went for tyres two weeks ago & it was pointed out to me that mine rubber had gone.

I asked them to silicone the rubber & it could be repaired at the next service.

Apparently it takes time to repair so labour cost is high.  In any event, I decided it was time to move on and go for another bike
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Offline Jughead

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Re: Ball joint boot
« Reply #5 on: July 19, 2015, 09:09:53 pm »
Just took my bike in for a service. Ball joint rubber has been foobar for 15000 000 kms. Justin of Motorradtec is very serious about not just replacing the boot when it wears but rather to replace the whole ball joint. Reason is that when the rubber boot goes, it is very likely that the ball joint itself itself is starting to wear. As this is a VERY critical safety item it is best to replace.
That said, it is a very expensive part. Hope my ball joint itself is  still good for a couple of thou still.

Yip, after 15000 000km the whole bike should soon need to be replaced
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Offline DavidMorrisXp

Re: Ball joint boot
« Reply #6 on: July 19, 2015, 09:25:47 pm »
Just took my bike in for a service. Ball joint rubber has been foobar for 15000 000 kms. Justin of Motorradtec is very serious about not just replacing the boot when it wears but rather to replace the whole ball joint. Reason is that when the rubber boot goes, it is very likely that the ball joint itself itself is starting to wear. As this is a VERY critical safety item it is best to replace.
That said, it is a very expensive part. Hope my ball joint itself is  still good for a couple of thou still.

Yip, after 15000 000km the whole bike should soon need to be replaced

Sounds like another advert for quality oil
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Offline ClimbingTurtle

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Re: Ball joint boot
« Reply #7 on: July 20, 2015, 07:25:21 am »
Just took my bike in for a service. Ball joint rubber has been foobar for 15000 000 kms. Justin of Motorradtec is very serious about not just replacing the boot when it wears but rather to replace the whole ball joint. Reason is that when the rubber boot goes, it is very likely that the ball joint itself itself is starting to wear. As this is a VERY critical safety item it is best to replace.
That said, it is a very expensive part. Hope my ball joint itself is  still good for a couple of thou still.

What did Justin quote for a new ball joint?

The rubber on mine has also split - discovered this because of a slight "knock" from the front suspension, like if the main steering column nut was a bit loose? Poked around and discovered the torn boot - I suspect the knock & play is from that joint now..... Anyway, bike is in "low use mode" until its fixed....  :biggrin:
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Re: Ball joint boot
« Reply #8 on: July 20, 2015, 08:02:47 am »
Just took my bike in for a service. Ball joint rubber has been foobar for 15000 000 kms. Justin of Motorradtec is very serious about not just replacing the boot when it wears but rather to replace the whole ball joint. Reason is that when the rubber boot goes, it is very likely that the ball joint itself itself is starting to wear. As this is a VERY critical safety item it is best to replace.
That said, it is a very expensive part. Hope my ball joint itself is  still good for a couple of thou still.

What did Justin quote for a new ball joint?

The rubber on mine has also split - discovered this because of a slight "knock" from the front suspension, like if the main steering column nut was a bit loose? Poked around and discovered the torn boot - I suspect the knock & play is from that joint now..... Anyway, bike is in "low No use mode" until its fixed....  :biggrin:


Fixed...that leetle bolt holds everything together bud... :o
 

Offline ClimbingTurtle

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Re: Ball joint boot
« Reply #9 on: July 20, 2015, 08:26:58 am »
Just took my bike in for a service. Ball joint rubber has been foobar for 15000 000 kms. Justin of Motorradtec is very serious about not just replacing the boot when it wears but rather to replace the whole ball joint. Reason is that when the rubber boot goes, it is very likely that the ball joint itself itself is starting to wear. As this is a VERY critical safety item it is best to replace.
That said, it is a very expensive part. Hope my ball joint itself is  still good for a couple of thou still.

What did Justin quote for a new ball joint?

The rubber on mine has also split - discovered this because of a slight "knock" from the front suspension, like if the main steering column nut was a bit loose? Poked around and discovered the torn boot - I suspect the knock & play is from that joint now..... Anyway, bike is in "low No use mode" until its fixed....  :biggrin:


Fixed...that leetle bolt holds everything together bud... :o


Indeed - the Low/No usage has been limited to moving the bike out of the garage, into the driveway....  :eek7:

Time to phone Justin and BMW....
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Offline Beebop

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Re: Ball joint boot
« Reply #10 on: July 20, 2015, 09:24:18 am »
I wouldnt make a blanket statement that a damaged boot necessitates replacement of the ball joint.
Mine was perished and split in 2 shortly after I got my bike @ around 40000km. I replaced just the boot
and greased the joint. Now @ 122000kms its still good as new. If you catch it early theres no reason to
believe its shot.
 

Offline ClimbingTurtle

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Re: Ball joint boot
« Reply #11 on: July 20, 2015, 09:28:24 am »
I wouldnt make a blanket statement that a damaged boot necessitates replacement of the ball joint.
Mine was perished and split in 2 shortly after I got my bike @ around 40000km. I replaced just the boot
and greased the joint. Now @ 122000kms its still good as new. If you catch it early theres no reason to
believe its shot.

I suspect mine is dodgy, hence the play that I can feel.
Time has not been on my side the last few weeks, so I have had to put the investigation off, but the plan is to trip the fairing etc. off and investigate the ball joint properly - also replace the rubber grommet on the speedo, that is also klaar, while I am there.
I need a few hours of quiet time for this ho....
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Offline Mr.T

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Re: Ball joint boot
« Reply #12 on: July 20, 2015, 02:14:47 pm »
Posting pics that Rocco took of the transplant as spoken about for the joint boot.
That is an excellent replacement cover if the ball joint mechanical's is still in a good place.
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Offline katana

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Re: Ball joint boot
« Reply #13 on: July 20, 2015, 02:56:33 pm »
I wouldnt make a blanket statement that a damaged boot necessitates replacement of the ball joint.
Mine was perished and split in 2 shortly after I got my bike @ around 40000km. I replaced just the boot
and greased the joint. Now @ 122000kms its still good as new. If you catch it early theres no reason to
believe its shot.

I caught mine early as a tear. When I inspected the actual ball it was 100%.  The bike had 24000kms.
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Offline Cyclops

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Re: Ball joint boot
« Reply #14 on: July 20, 2015, 03:12:57 pm »
Just took my bike in for a service. Ball joint rubber has been foobar for 15000 000 kms. Justin of Motorradtec is very serious about not just replacing the boot when it wears but rather to replace the whole ball joint. Reason is that when the rubber boot goes, it is very likely that the ball joint itself itself is starting to wear. As this is a VERY critical safety item it is best to replace.
That said, it is a very expensive part. Hope my ball joint itself is  still good for a couple of thou still.

Yip, after 15000 000km the whole bike should soon need to be replaced

Sorry that should have read 15 000 kms
 

Offline Cyclops

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Re: Ball joint boot
« Reply #15 on: July 20, 2015, 03:17:03 pm »
Just took my bike in for a service. Ball joint rubber has been foobar for 15000 000 kms. Justin of Motorradtec is very serious about not just replacing the boot when it wears but rather to replace the whole ball joint. Reason is that when the rubber boot goes, it is very likely that the ball joint itself itself is starting to wear. As this is a VERY critical safety item it is best to replace.
That said, it is a very expensive part. Hope my ball joint itself is  still good for a couple of thou still.

What did Justin quote for a new ball joint?

The rubber on mine has also split - discovered this because of a slight "knock" from the front suspension, like if the main steering column nut was a bit loose? Poked around and discovered the torn boot - I suspect the knock & play is from that joint now..... Anyway, bike is in "low use mode" until its fixed....  :biggrin:
I didn't get a figure from him, but a year ago the quote from Auto Alpina BMW was about R1650 - cant remember if that was incl or excl Vat. Apparently its also the labour bill that goes with it as it's quite a big job - so I am told
 

Offline Aaklige Attie

Re: Ball joint boot
« Reply #16 on: July 20, 2015, 03:27:42 pm »
Ball joint with rubber from BMW will set you back about R1300.00. That is excluding any labour. My boot also needs replacing but think I should rather opt for fitting complete unit.
 

Offline ClimbingTurtle

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Re: Ball joint boot
« Reply #17 on: July 23, 2015, 07:53:19 am »
OK - I did some searching last night - the "clunk" is not from the ball joint at all, in fact there is absolutely no play on the ball joint at all - good news!

Then there was much discussion about where the noise was in fact coming from - turns out it's the floating brake discs..... So now I need someone with a GS/A to do me a favour, grab a brake disc and check what the level of movement is....? They are floating disc's so there will be a little play, but enough to cause a light "clunk"

And Dutchman81 - what was the ball-joint rubber off of? Where do I get one....?
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Online Knucklhead

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Re: Ball joint boot
« Reply #18 on: July 23, 2015, 10:22:07 am »
OK - I did some searching last night - the "clunk" is not from the ball joint at all, in fact there is absolutely no play on the ball joint at all - good news!

Then there was much discussion about where the noise was in fact coming from - turns out it's the floating brake discs..... So now I need someone with a GS/A to do me a favour, grab a brake disc and check what the level of movement is....? They are floating disc's so there will be a little play, but enough to cause a light "clunk"

And Dutchman81 - what was the ball-joint rubber off of? Where do I get one....?

bestway is to put bike on center stand, let someone hold it so that the front wheel is off the ground and then pull the weel forward and puch backwards...in this way any ball joint movement will be detected.
 

Offline ClimbingTurtle

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Re: Ball joint boot
« Reply #19 on: July 23, 2015, 11:34:09 am »
OK - I did some searching last night - the "clunk" is not from the ball joint at all, in fact there is absolutely no play on the ball joint at all - good news!

Then there was much discussion about where the noise was in fact coming from - turns out it's the floating brake discs..... So now I need someone with a GS/A to do me a favour, grab a brake disc and check what the level of movement is....? They are floating disc's so there will be a little play, but enough to cause a light "clunk"

And Dutchman81 - what was the ball-joint rubber off of? Where do I get one....?

bestway is to put bike on center stand, let someone hold it so that the front wheel is off the ground and then pull the weel forward and puch backwards...in this way any ball joint movement will be detected.

Cheers - I will give it a try tonight! Thanks!
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