Servo Pump Problems

badsworth

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My 2004 GS1200 with ABS is having the dreaded servo pump problem - red warning triangle and flashing ABS light. It only comes on after the bike has been ridden for a while. If I switch off the ignition for a while and restart it the lights are off for a few miles then re-appear.

It has 17,000 miles on the clock from new and is otherwise in excellent condition. My local BMW specialist says a new pump is about £1700 + fitting, so a little over £2,000. Ouch!!!!!

I know from this forum that getting rid of the servo is an option - but I don't like the idea of butchering the bike or of losing a safety feature. My repair guy tells me that if I lose the servo the brake warning light will be on permanently, which would be a pain and possibly disguise any other problems that might crop up.

Motoscot at Luton have told me they no longer offer a repair service for these pumps - just a removal service.

Can anyone on this forum please offer any other suggestions? Are there any businesses that offer a repair/refurbishment service for these pumps? Can anyone recommend them?

Many thanks

Gavin Edwards
 
Does anyone know if the servo pumps have been improved since 2004? If I spend 2 grand getting a new pump fitted will I still face the problem of the new pump failing in a few thousand miles?
 
badsworth said:
Does anyone know if the servo pumps have been improved since 2004? If I spend 2 grand getting a new pump fitted will I still face the problem of the new pump failing in a few thousand miles?
Click to expand...

If removal is done properly you won’t have any warning lights and even if you did, just disconnect the light, it is redundant as your bike won’t have ABS.
Have you checked your brake light switches and fluid levels in the secondary circuits (under fuel tank).

You could try BBA remanufacturing for a repair, they are reputable but I think some parts are difficult to get.


Sent from my iPhone using Tapatalk
 
It is possible to get these units refurbished. Note I've not used this myself. Done in Germany, so you'd be without it for a couple weeks. Costs about £600 all in from what I remember.

https://rhelectronics.de/



Sent from my SM-N910F using Tapatalk
 
Just remove it and its no different to a none abs bike.
It definitely isn't a safety feature if it fails.
As you wont know ,when you use the brakes, if you are going to get full servo assist or none.
 
I have the exact same bike and I just removed mine because of the same problem. I honestly don't notice much difference at all. Its worth just ripping it out and stop worrying about it.
 
The later models had ABS and linked brakes but no servos. The brakes are pretty much the same. They stop just as well.
 
badsworth said:
M

It has 17,000 miles on the clock from new and is otherwise in excellent condition. My local BMW specialist says a new pump is about £1700 + fitting, so a little over £2,000. Ouch!!!!!

My repair guy tells me that if I lose the servo the brake warning light will be on permanently, which would be a pain and possibly disguise any other problems that might crop up.

s
Click to expand...

If you're getting a new one fitted then have BMW fit it. They'll give you a 2 year warranty (whichv you'll need), if anyone else fits it BMW won't give you any warranty.

Also the warning lights will not be on if the person doing the removing knows what they're doing..
Sounds like your repair guy has never removed a servo/abs unit

badsworth said:
Does anyone know if the servo pumps have been improved since 2004? If I spend 2 grand getting a new pump fitted will I still face the problem of the new pump failing in a few thousand miles?
Click to expand...

They can go at absolutely any time, mileage or time doesn't come into it. That's why you need the 2 year warranty that BMW offer IF THEY FIT THE UNIT.

Buckingham said:
If removal is done properly you won’t have any warning lights and even if you did, just disconnect the light, it is redundant as your bike won’t have ABS.
Click to expand...

The warning lights are part of the circuit board in the instrument panel so can't be simply "disconnected". ;)
 
I removed my servo ABs on my 2006 (04MY) GS and I prefer the brakes non servo assisted. Much more feel and no perceptible loss in braking power. I blanked off the warning LED so that's not a problem. MOT's no problem either.
Mark
 
So you spend 2k on having it fixed.

You wont get your money back, if you sell.

you'll still be looking at a 2004 bike

No one is going to pay extra for it having a new servo.

or look at it this way ... you went to your dealer and he said - Parts obsolete - no longer made nill stock, sorry

What would you do? scrap the bike?? or spend £200 on a servoectomy ?
 
Santa-2512 said:
So you spend 2k on having it fixed.

You wont get your money back, if you sell.

you'll still be looking at a 2004 bike

No one is going to pay extra for it having a new servo.

or look at it this way ... you went to your dealer and he said - Parts obsolete - no longer made nill stock, sorry

What would you do? scrap the bike?? or spend £200 on a servoectomy ?
Click to expand...
C'mon, it's obvious, you buy another bike to fit that new servo unit to ;-)



Sent from my SM-N910F using Tapatalk
 
BBA Man - Pressure Modulator (Servo Pump) Repair

Buckingham said:
If removal is done properly you won’t have any warning lights and even if you did, just disconnect the light, it is redundant as your bike won’t have ABS.
Have you checked your brake light switches and fluid levels in the secondary circuits (under fuel tank).

You could try BBA remanufacturing for a repair, they are reputable but I think some parts are difficult to get.


Sent from my iPhone using Tapatalk
Click to expand...

I have just sent an enquiry to BBA Man http://www.bba-reman.com/gb/content/how_to_contact_bba_reman/ to see if they can help. RH electronics seem to charge around £1,000 and you have the hassle of translations and shipping. Fingers crossed.
 
I remember reading on one of the hundreds of threads I have read about this problem on this and other forums that it is worth checking or replacing the battery before deciding on replacement or servosectomy. Can anyone please tell me why? How might this be causing a problem?

My bike is 2004 and although I have paperwork for every nut and bolt replaced since registration I can find no indication that it has ever had a replacement battery. It is however always connected to an Optimate 4 by myself and the PO. Could this be significant?

Badsworth:(
 
badsworth said:
I remember reading on one of the hundreds of threads I have read about this problem on this and other forums that it is worth checking or replacing the battery before deciding on replacement or servosectomy. Can anyone please tell me why? How might this be causing a problem?

My bike is 2004 and although I have paperwork for every nut and bolt replaced since registration I can find no indication that it has ever had a replacement battery. It is however always connected to an Optimate 4 by myself and the PO. Could this be significant?

Badsworth:(
Click to expand...

Buy another battery £60 for a decent gel one motobatt - you havnt lost anything by trying
 
I’m having issues with my 2006 GSA but think it’s the rear switch that’s at fault. I have one on order with Motor works, if that doesn’t remedy it I’m considering servoectomy that needs to be done before June 15th cos we are off to the Pyrenees.

Anyone have a link to a good tutorial on how to complete aservo bypass and what parts are required?

Any replies much appreciated ;)
 
Jersey_GS said:
I’m having issues with my 2006 GSA but think it’s the rear switch that’s at fault. I have one on order with Motor works, if that doesn’t remedy it I’m considering servoectomy that needs to be done before June 15th cos we are off to the Pyrenees.

Anyone have a link to a good tutorial on how to complete aservo bypass and what parts are required?

Any replies much appreciated ;)
Click to expand...

Follow the switch wiring to where it goes round the battery box towards the front of the bike on the nearside. My 2006 model frayed the harness there, breaking one of the wires connecting the rear switch, which the ECU treats as the brake pedal being pressed. If you've access to a voltmeter (not a test lamp) then unplugging the switch and checking for voltage on the connector from the harness will tell you if there's a break.
 
Thanks for the tip Bear :thumb2 i had a quick look at where the switch wiring goes to yesterday whilst cleaning the switch contacts, i have a spare loom and was hoping there was a switch attached to it but there wasn't :(.

I couldn't quite work out exactly where it went, i didn't have a huge amount of time that involved cutting cable ties and pulling wires off the frame.

Will look at this tomorrow though as will need to prep for a new switch anyway.

I was going to phone Motorworks tomorrow to order the parts needed for Servo bypass/removal because if this doesn't work I wont have time to wait for another order to arrive and get the bike ready.

80% sure its the rear switch because of previous issues and because of its location prone to getting covered in shite. Although I could be wrong.
 
badsworth said:
I have just sent an enquiry to BBA Man http://www.bba-reman.com/gb/content/how_to_contact_bba_reman/ to see if they can help. RH electronics seem to charge around £1,000 and you have the hassle of translations and shipping. Fingers crossed.
Click to expand...

Looks like BBA do repair a unit for the K1200LT, it's listed on their site as:
BMW K1200 LTC Motorcycle - ABS Hydro-Unit 34.512333232
I don't know whether this is the servo or something else !
 
Nippy Normans supply Touratech, Wunderlich, Desert Fox and many other makes of accessories.
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