Gearbox crunch 6th to 5th?

[garvey2003]

As mentioned before, my gearbox seems to crunch, like it's between gears.
If you apply a good amount of foot when chaning down it seems to be fine but when you change normally it crunches and grinds.

I've striped down the gear leaver and cleaned and re-fitted.

Is this going to be a gearbox drown out jobby? anythign else I can check, do before I start to cry

Cheers
Garv

 

[DrFarkoff]

Drain your gear oil and check the colour and for presence of metal bits

EP75w90 fully synth GL5 spec seems to be good at helping sticky shifts!

Oh as to colour I think if it's goldy you probably have a wearing baulk ring and fine silver your balls chrome is falling off and lots of ally crumbs selector fork breaking up

 

[garvey2003]

thank you for that, I assume changing the oil is not a big job.
The bike is standard 1150GS 99, how much oil will I need?

 

[DrFarkoff]

approx 800cc so a litre bottle should be ample

 

[garvey2003]

Thanks, so upto the threads right?

 

[MarkShelley]

Thanks, so upto the threads right?

Yes, and start saving up, just in case

 

[garvey2003]

or stop using 6th gear

 

[Keith Chapman]

Undo the gear box filler plug before you undo the drain plug.

 

[garvey2003]

does anyone know if a Gearbox refurn company, I had a car with the gearbox had gone, I traded in my broken one for a refurb gearbox, was nice and cheap if I remember right.

Any for bike gearboxes?

 

[Neil W]

Best bet is to get your box rebuilt by Scriminger, fix it sooner than later before something lets go and blows a hole in the casing.

 

[tiredtrooper]

I have to agree with Neil W. Check out the picture of my gearbox after it clunked from 6th into 5th. Not a pretty site.

 

[MarkShelley]

Motorworks also do exchange boxes. They were about £600 last time I looked (which was when I needed one!). It is an expensive job as you might want to do the clutch whilst it is apart and with labour you are looking well into 4 figures I am afraid.

 

[mark2jag]

ah yes but.

Silly question, but when you are changing gear from 6th to 5th are you just banging on the gear lever or are you using the clutch as well??Ok I'll get me coat..

 

[B4ndit]

Because its a high over drive when changing from 6 to 5 I really let the revs drop off before I change down. This gets rid of the big clunks.

Conversely I only go to 6 when I know I can get a good run out of it. 6 is one of those gears I use for special occasions. (Motorways)

A lot of gear boxes are like this. Not just the GS.

 

[ChrisH Kerry]

Because its a high over drive when changing from 6 to 5 I really let the revs drop off before I change down. This gets rid of the big clunks.

Isn't it the other way round? Give it a few revs to snick it happily into 5th from 6th (E)? I use 6th a lot as bike pulls well from 3k revs whatever speed that is, around 80kph... Gearbox took a bit of getting used to after the fantastic Transalp box, but if you take a bit of time non-clunky changes are the norm

 

[garvey2003]

Well I'm going to change the fluids for the clutch and gearbox and see if that helps a little, bit really much else I can financially at the moment.

the bike is riddled with issues which I can't seem to solve without spending 100's on it.
Think I bought a lemon to be honest, it's putting me off the GS in a big way

 

[garvey2003]

I've had a look in my garage and I have some 75w90 Semi GL5, will that be ok or should I go get some Fully synth? i'm guessing its not going to make much of a defference.