Attempting to repair servo ABS unit

[farmerboy]

I too have had the servoectomy, and leds issue. Mine are currently blaked with a strip og duct tape at the top of each LED recess.
It suffers from light bleed, so you can see the panel flashing in the shade.

I all ready have the high density foam blocks ready for the next time i open the Kombi

How exactly did you do the amber / red leds, if i recall they are in a block of four. what i didnt see was which leds lit up for which level of fault. if its the upper and lower two, then block foam will work, if its the upper LH and Lower RH and vice versa, that will be a pig to do.

Also is you foam touching the LED's? i wasnt sure just incase they generated a bit of heat, and melted the foam

Mart

Hi, I have taken a pic and will attempt to upload it later but I have two warning triangle leds, one (amber) at the top and the other (red) at the bottom. I simply cut a nice pyramid shape for fit the recess and then sliced it in half to reveal the top amber led. I then schamfered the foam to allow the light from the amber led to reach most of the triangular display. No issue with heat as leds run cool and everything seems to work fine. (the 3 leds are the green ones in the neutral light)

I have just been out for a test ride and I am absolutely delighted. I know everyone always thinks their "mod" is the best thing since sliced bread but removing the damn servo has transformed the brakes. So much better. It is hard to believe that Mr BMW decided to bugger about with such a fine standard brake set up. OK, add a bit of abs but the servo nonsense is ridiculous....

No damn wizzy sounds, no grabby brakes at low speed, rear brake has more feel and easier to use on a hill start and the front brakes are epic - great progressive feel and real power when pulled in anger. I should have done this years ago! I hesitate to say this but they "feel" more efficient without the servo!

All I have to worry about now is brake fluid and seals.... like every other bike on the planet!

Happy bunny......

ps.....I must have a look and find out what else the red triangle warns me about so I know which warnings will not work anymore!

pps.... strange one this... but the bike seems to start easier and the tickover is less lumpy and a tiny bit faster...weird!

 

[farmerboy]

link to pics..
https://goo.gl/photos/rdmUjj3jjA8z4Ziq7

 

[Santa-2512]

As i suspected,

My led's were in the diagonal pattern, so cutting an hdpe block to fit didn't work.

Applying electricians tape gave some success, but due to the limited access I still have some

light bleed. I need to have another go at the weekend.

I tried disassembling the white housing in the kombi, but couldn't see any obvious way to get

it apart. The other way would be to apply some black silicone sealant over the led's to mask

everything, but again that would need a very dextrous hand

Mart

 

[Santa-2512]

Farmerboy: just let anyone else that wants them have them.

Santa-2512: LED's shouldn't generate any heat so foam will be fine (electronics is my day job).

When I was considering servosectomy before attempting the repair I came across http://www.grahamsmotorcycles.co.uk/. I read somewhere on this site that they could keep the amber/red warning lights working as they should - could be worth a call to them.

Had a look, cant see anything relating to the servoectomy, but check out the workshop pictures OMG!!!

some very scary pics in there


mart

 

[farmerboy]

As i suspected,

My led's were in the diagonal pattern, so cutting an hdpe block to fit didn't work.

Applying electricians tape gave some success, but due to the limited access I still have some

light bleed. I need to have another go at the weekend.

I tried disassembling the white housing in the kombi, but couldn't see any obvious way to get

it apart. The other way would be to apply some black silicone sealant over the led's to mask

everything, but again that would need a very dextrous hand

Mart

Maybe a tiny dab of black paint would work? A couple of coats with a tiny artists brush would probably dim the damn things!

Just been out again and so glad I have removed the servo! There is nothing worse than that nagging doubt in the back of your mind that the brakes may fail!!!!

 

[Hunda67]

Had a look, cant see anything relating to the servoectomy

Click on workshop, then click ABS/Servo faults below, then near the bottom of the page select R1200R/GS/RS/ST in the dropdown box and a message pops up saying they can remove Servo/ABS unit and set warning lights fully working. Maybe the just cover up the red LED's but according to my handbook that came with the bike (2006 GS adv) the red warning triangle also lights up for low oil pressure and insufficient battery charging so it implies they do something cleverer

Also interesting picture of a sliced open ABS/Servo unit at bottom of page.

 

[Santa-2512]

Well i managed to get some butyl on the 2 leds, and now have an amber warning light .

Interesting observation on the kombi though.

The LCD screen has all the information for high end ZFE data in the display.

And there is a manual trip reset / cycle button behind the rubber tit that sticks out of the front

of the kombi.

So on a pov spec bike, this would be a manual press.

Bikes with the Trip function & ABS, have this accessible from the handlebar switch.

So if anyone who has servoectomised can get hold of a BASIC ZFE module plug it in and see

if the brake failure lamp lights.

My theory is, it wont, as there is no signal expected or sent on pin 32 of the ZFE


Mart

 

[Hunda67]

Just an update on my ABS unit.

I decided to give the bike a full sevice since a lot of parts were removed to access the ABS.

Work done was oil and filter change, new spark plugs, FD oil change and grease drive shaft, valve clearances, injector balancing, gearbox oil change. All done with information found on this site so it is a stunning rescource

FD oil stank like rotten eggs - but I don't think it's ever been changed as when the bike was dealer serviced I don't believe it was part of the BMW service schedule back then.

DWALO! fault was cleared by replacing batteries in alarm unit - easy to do and about £3 for the batteries from Amazon.

Gear postition faults were cleared by removing connector to sensor and cleaning with WD40 .

All bits were stripped off rear subframe and the frame was rubbed down and spray painted - Hammerite smooth black was a good colour match for front frame (which hadn't rusted and didn't need painting) so back end looks good again now:


And to finish it all off (despite Bendy Toy's warning) I decided to paint the fuel tank cover and beak flat black as I always thought that would suit the bike Was just done with some wet and dry paper, some car body primer and several tins of flat black car paint and I'm happy with the results:


Now done several hundred miles since repairing the ABS and all still good with no faults showing on GS-911.

So there it is - happy to have my bike back to normal and thanks again to all on this site who helped out with bits, advice and how too's

 

[Santa-2512]

Looks good ,


not sure if i have the courage to do the GB & FD,

With my track record on this bike, i'll prolly strip bits lol

You could always do mine if you fancy a road trip



Mart

 

[Hunda67]

Thanks.

It's not too bad working on the bike - 6 months ago I wouldn't have attempted some of the work but there is plenty of good info on here.

Probably takes me at least twice as long as some people on here to do most things, but that's just to make sure I don't mess anything up

Long way for me to come and break something on your bike

Going back to your post above I would have though plugging in another ZFE would cause problems with the bikes identity - I would imagine it would need some sort of programming to work on a new bike.

 

[Santa-2512]

Thanks.

It's not too bad working on the bike - 6 months ago I wouldn't have attempted some of the work but there is plenty of good info on here.

Probably takes me at least twice as long as some people on here to do most things, but that's just to make sure I don't mess anything up

Long way for me to come and break something on your bike

Going back to your post above I would have though plugging in another ZFE would cause problems with the bikes identity - I would imagine it would need some sort of programming to work on a new bike.

Dont know on that one, they dont say they need coding when there up for sale on ebay,

Hence wanting to get hold of one to try

Mart

 

[farmerboy]

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[farmerboy]

Oops. Wrong place.


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[Bendy toy]

The painted plastic should re paint just fine. The textured black bits are polypropylene so need special primers & techniques. Much easier to just wrap them.