BMW K1200, K1300, and K1600 Forum banner

1 - 16 of 16 Posts

·
Registered
Joined
·
36 Posts
Discussion Starter #1
Just worked out i have to change my Transmission housing..does anyone have any hints whether this is hard or not? any hints at all?
 

·
Registered
Joined
·
36 Posts
Discussion Starter #3
I've got lotsa hours...not riding it coz it's broke. When i left the road the centre stand got ripped out by a big rock and pulled the screws out with it....pretty sure it's just the housing that needs replacement. what type of special screws do i need? is this a job for some guys who are pretty handy around a bike, or is it too big?
 

·
Addict
Joined
·
3,750 Posts
relaxa69 said:
I've got lotsa hours...not riding it coz it's broke. When i left the road the centre stand got ripped out by a big rock and pulled the screws out with it....pretty sure it's just the housing that needs replacement. what type of special screws do i need? is this a job for some guys who are pretty handy around a bike, or is it too big?
I looked at stripping all the internals out of mine to get it powder coated. But got scared of what might lie ahead and eventually plugged all the seals and shafts and sprayed it.

Personally, if I had a damaged casing I might try to get a complete tranni from a Boneyard off a newer bike.



Never pay again for live sex! | Hot girls doing naughty stuff for free! | Chat for free!
 

·
Registered
Joined
·
1,511 Posts
relaxa69 said:
I've got lotsa hours...not riding it coz it's broke. When i left the road the centre stand got ripped out by a big rock and pulled the screws out with it....pretty sure it's just the housing that needs replacement. what type of special screws do i need? is this a job for some guys who are pretty handy around a bike, or is it too big?
Did the bolts just pull out or did it brake apart the bosses..transmission leak?..
 

·
Addict
Joined
·
3,750 Posts
I still have a good picture in my head of the underside of the Tranni. The stand mounting points are really thick parts of the casting. the 'pillars' which is where the bolts go into have to be strong because the whole weight of the bike is on them as it rolls up on the center stand. I was seeing some salt corrosion around there, hence my repaint work.

First off I would try to see if the body of the tranni casting has been damaged. Is oil leaking out?

The stand pillars are some way below the main casing and it may be possible to have some TIG welding done there (even upside down) without emptying the casing. But don't hold your breath about the result, because the ali castings are not that pure in my personal opinion.



Never pay again for live sex! | Hot girls doing naughty stuff for free! | Chat for free!
 

·
Registered
Joined
·
1,163 Posts
weld

Had some welding done by a specialist, cost me a 6 pack of bourbon and coke. Check it out, may be possible. Other alternatives also when bolts have been ripped out.
 

·
Registered
Joined
·
2 Posts
Hi guys, I have Relaxa's bike in my shed and will be pulling it down a little tonight to have a better look.
On the preliminary view, looks like the "crash test dummy" took out the front wheel, little fairing damage and ripped the centre stand off the transmission.
The bolts (and posts) have been completely sheared off with at least one hole on the transmission housing.

So what we need to know:
Transmission housing is it worth just pulling the transmission off and handing it over to a BMW repairer to replace the housing?
Any ideas on the cost in Australia for a housing?
Is it a big job to remove the transmission?
And special tools required to get the transmission out?

Any advise would be great.
 

·
Will ride for picts
Joined
·
1,645 Posts
crooner said:
Hi guys, I have Relaxa's bike in my shed and will be pulling it down a little tonight to have a better look.
On the preliminary view, looks like the "crash test dummy" took out the front wheel, little fairing damage and ripped the centre stand off the transmission.
The bolts (and posts) have been completely sheared off with at least one hole on the transmission housing.

So what we need to know:
Transmission housing is it worth just pulling the transmission off and handing it over to a BMW repairer to replace the housing?
Any ideas on the cost in Australia for a housing?
Is it a big job to remove the transmission?
And special tools required to get the transmission out?

Any advise would be great.
Breaking the rear drive and swingarm pivot pins loose requires some serious torque. Heat the pivots, use a 6-point socket, and a two or three-foot cheater on a breaker-bar.

You'll need a way to lift the bike frame off the engine ... I used an engine hoist.


You'll also need a 30mm (IIRC) deep socket with a window cut into it to set the final drive pivot bearings and the swing arm pivot bearings.


I was only working on the alternator, so I didn't need to pull the transmission, but I was only a couple steps away. You should do the seals while you have the transmission apart, and replace the clutch. You'll need an alignment tool for the clutch.
 

·
Addict
Joined
·
3,750 Posts
How old is this bike? That determines whether you throw a lot of cash at it (small relative to its market value) with a dealer fix, or choose an alternative cheaper repair strategy?

Dealer fix or self fix?

I bet the dealer price will knock you out!

I bet the dealer price just for parts (spare casing plus all the new seals and bushings you need to buy, possibly stand) will knock you out.

Helicoil on ripped out pillars and fractured casing is impossible, there's nothing there to helicoil!

Get the prices, but if it was me on an older bike I'd try to find a boneyard tranni. Then decide if it's going to be a dealer or self fix. Assuming the tranni is good, you are only left with one set of problems - the rear end teardown.



Never pay again for live sex! | Hot girls doing naughty stuff for free! | Chat for free!
 

·
Registered
Joined
·
1,507 Posts

·
Registered
Joined
·
2 Posts
Yeh, the mounting posts are sheared off, so helicoil is not an option.
The bike is a 2003 (I think)
Pulled the bike down last night we need.

Rocker cover
Front wheel
Transmission
RH Foot peg and foot peg mount
Foot brake

So from what I can tell the issue really is the Transmission.
The rest is an easy find and easy fix.
 

·
Will ride for picts
Joined
·
1,645 Posts
crooner said:
Yeh, the mounting posts are sheared off, so helicoil is not an option.
The bike is a 2003 (I think)

<snip>

So from what I can tell the issue really is the Transmission.
The rest is an easy find and easy fix.
Well, you don't HAVE to replace the centerstand. You could just leave it off and only use the sidestand. Provided that the transmission isn't leaking, of course.
 
1 - 16 of 16 Posts
Top