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Quote:

Originally Posted by uberthumper (Post 190884)

There are two sorts of needle roller bearings, "full complement", and "caged roller".

A full complement bearing has, as the name suggests, a number of rollers which precisely fills the space between the inner and outer races (the inner race in this case being the sleeve which fits inside the bearing).

A caged bearing has fewer rollers. The cage isn't just there to stop the rollers falling out before assembly, it's there to keep them spaced out evenly in operation.

What you've done is remove that cage, but you've still got the same number of rollers - which is not enough to 'fill' the bearing. This means that they can all move round to one side of the bearing, leaving an empty section. Expect a lot of play and fairly rapid failure.

In other words, if the bearing comes without a cage, that's fine. I presume this was the case on the other bikes you've had.

What you've done by removing the cage from a caged bearing isn't fine. The rest of the 'how to' is great, but this particular bit is not good advice.

The reason for my query is the above post. If the silicon is still there after 50000 then it lasts a lot longer than if I were to replace it with grease?

How about cleaning with grease or would that be a solvent to

How to grease rear suspension & swing arm(part4)

MPL shouldn't really be viewed as a cage. It's sole purpose is to bleed oil onto the rollers. The MPL may will still be there after 50k miles, but it will have long since given up all it's suspended oils. It won't be lubricating anything. This is why Yamaha say re-grease at intervals.

The trouble is because of the MPL you can't get any grease in there!

Grease itself won't clean the bearing as it's sticky by nature; they really need washing out with something, flushing out the dirt and grit.

On the other matter of needle spacing, MPL bearings have tightly packed needles, there is no space, they all meet at tangents. Unlike a steel cage needle roller bearing does have space and would indeed give rise to problems should the cage be removed.

Quote:

Originally Posted by Posiden (Post 198640)

grease nipples are a good idea provided you dont over grease.
we have several fan bearings seize up after the apprentices over greased them to the point where the grease had heated up, degraded into a thick sludge and then destroyed the bearings and knackered the motor. Not applicable to your head stock but you know what I mean........
they used to fit them to the rear linkages etc

Grease nipples are indeed what i am preparing on mine, as soon as the new shock is in place. (Getting a bit higher so best to wait until then to determine the exact place to drill the holes)
What you need to realise is that, when you have grease nipples, is that you have to turn the seals around! The way they are fitted originally is so that the grease that is inside cannot come out (while spray water could get inside if sprayed violently)
Turning them the other way around will not allow dirt to get inside anymore, while exessive grease will be pushed out. The problem with over-greasing is solved with that.

:)

I wouldn't worry too much about the soft bearing stuff at all...the plastic thingy is a weird deviation form my usual dirt motos....

I have had no ill effects from my bearings since...

:)

.

Hi

The zip tys are there in case a spoke snaps (usually with a large impact)...the zip ty will stop it flailing about and getting caught in a disc or sprocket....the front spokes have them also.

The dog bones do have adjustment..I have mine at the highest saddle setting. The front end,for me,is more planted when riding the fast twisties here.

:)

.

No problem..if you have a wee peep at my threads ref. prepping for travelling etc you'll see a few more tips and tricks.

All the best

:)

.

Quote:

Originally Posted by Kev (Post 187564)

Nice write up, I have made it into a PDF for everyone to download.

Click in the download link. http://www.4shared.com/download/E80Z...2_Controll.pdf

Hi Kev,

The download link is invalid how can I download it? Could it be because I'm on iPad?

Thanks

Andrew

Thanks for this great tutorial, even I could follow. Please do one for fork service, seal and oil replacement.
I have the manual but can't follow it.
One other thing I'm curious about the top bolt of the shock. Does that not have a bearing?

Quote:

Originally Posted by marques (Post 202321)

One other thing I'm curious about the top bolt of the shock. Does that not have a bearing?

No. Just a bush on the top mount (which can get a bit squeaky).