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Offline 1675

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Re: Wishbone Replacement
« Reply #16 on: August 03, 2021, 08:06:44 am »
I agree with Coconut on the service interval, 20,000 miles is too long.
I do mine at the end of each season, which before this current madness was around 12,000 miles a year and the front bearing was always dry. Perhaps it gets too much heat from the exhaust and the grease melts, allowing it to escape.
I have replaced the front bearing and sleeve 4 times now as each time they were showing signs of wear.

Offline Yaga1973

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Re: Wishbone Replacement
« Reply #17 on: August 03, 2021, 04:20:44 pm »
*Originally Posted by 1675 [+]
I have replaced the front bearing and sleeve 4 times now as each time they were showing signs of wear.

What sort of grease are you using to lubricate the bearings?
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Offline 1675

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Re: Wishbone Replacement
« Reply #18 on: August 03, 2021, 08:59:32 pm »
High temperature grease, dont have the specification to hand, but it is used for heavy goods vehicle wheel bearings which generate lots of heat from the brakes.
It's no problem so long as the wishbone bearings are greased more frequently than advised in the service schedule.

Offline Yaga1973

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Re: Wishbone Replacement
« Reply #19 on: August 03, 2021, 11:34:51 pm »
I have a tub of synthetic Valvoline HP grease that's specked for splined drives and whatnot.  I figured that or waterproof trailer bearing grease would be good.
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Offline TriumphTwo

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Re: Wishbone Replacement
« Reply #20 on: August 04, 2021, 07:41:06 pm »
Ahem, excuse me,  do you disassemble your bike to check the lubrication, or is there a point for visual inspection, and disassembly is needed to lubricate?
I've read about similar things on the ST, but never saw a broken wishbone before.  :084:
Thx fot input

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Offline Coconut

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Re: Wishbone Replacement
« Reply #21 on: August 05, 2021, 07:29:09 am »
It's a scheduled Service Item every 20,000 miles to check and lubricate the Bearings,
but many owners have found corrosion, sometimes serious, and even seizing,
way before that mileage so it seems prudent to check them more regularly
depending on your own mileage, and the conditions you ride in.

Dismantling is required to examine the Bearings, Bushes and seals.


Offline TriumphTwo

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Re: Wishbone Replacement
« Reply #22 on: August 05, 2021, 11:17:45 am »
 :460:
Thank you!
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Offline STJIM

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Re: Wishbone Replacement
« Reply #23 on: August 13, 2021, 04:17:06 pm »
I'm going to check the needle bearings for lube this fall.   I'm close to 20K miles.

After first reading this thread I got the impression the TTSE just used sleeves and bushings, not needle bearings.  But then I noticed in the TTSE parts list, needle bearings are listed.

So, I just changed the rear tire on my '08 Concours with just over 20K miles.  Since reading this thread I thought it would be a good idea to check the lube on those parts on the Concours.  The Concours also has needle bearings.

What I found on the Concours was very little lube, but hardly any wear. There was a "wear pattern" evident but after a little polishing with 1500 grit wet or dry, they disappeared.

I don't think it's easy to pack grease into a needle bearing.  And needle & roller bearings only require a film of grease, but I like to pack as much grease as possible.

So I'm not surprised that some Owners think the needle bearings aren't adequately lubricated, but they probably are - they only need a film of grease.  Just my 2 cents.   But I will try to pack as much grease into those bearings as I can and add a bit more between the small volume between the bottom of the seal and the end of the needle bearing.
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