Not a good month...

big_kitch

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So earlier in the month my rear shock emptied its oil over the drive (see earlier thread about my pain removing the bottom bolt). Side effect of my cancelled dealer appointment was that they noticed I had an FPC recall outstanding. On the way there to have it done the red brake failure light came on - their diagnostics say the ABS pump had had it - new part £1500 sir.

Have looked around on here and, not wanting to dismantle the thing myself, best bet seems to be @motoscot who will fit a reconditioned one for £320. Anyone had any experience of this or other options to consider?

Maybe the bike's telling me something (2007 GS, 57K).

Cheers

Nick
 
No experience of your bike, or your fault; however Motoscot is well recommended in these parts so have confidence if you go that route.
 
I believe it's a non servo bike. Bought in September 2007 and I seem to remember them ordering it at the time.
 
Big-Kitch never said anything about having the servo system.

On non-servo systems the ABS unit has a pump in it, maybe on those early servo ones too. That pump has a motor that has brushes, which do wear out. There are a few cases around on ADVRider and the GS911 Forum where people have dismantled the unit to replace the brushes.

It seems a straightforward affair, but not for the faint-hearted. You really want to be 100% confident about the procedures before messing about with brakes; but on the up-side the motor and brushes are external to the hydraulic circuits.
 
A very useful report on how to strip the ABS motor.

Some comments on the other stuff.

Take off the air inlet spout, but leave the air filter in place to keep the airbox clean.

Use LOTS of cotton rags to catch brake fluid. My engine top and front subframe were badly corroded. Most likely due to a fluid spill at some time. You will need a proper flare nut spanner.

The peened tabs on ABS motor have to be cut away, so it's not likely to be possible a 2nd time. Sourcing some new brushes would make good sense.

Ferrous filings will stick to the stator magnets. Check very carefully it's 100% clean inside. I did a start motor strip. Who knows where the metal bits came from but they really stick.

Why does he use epoxy on the newly peened tabs? It won't serve any mechanical purpose. But some paint would prevent the bare metal corroding.

Holding the motor shaft in a vice with only PVC tape for protection is asking for trouble. The tape rips and hard vice jaws metal hit clean metal. A pair of aluminium sheet jaw protectors do the same job and hold more securely.

By the time the bike is rebuilt the brake system will be pretty much empty. So just bleeding the brakes is enough to replace the brake fluid.

When you put the (ADV) fuel tank back on, the countersunk screws can easily cross thread. I replaced mine with longer bolts which have the threads turned off the first 8mm. This provides a lead-in so the threads can connect.

Who knows why BMW bolt the airbox under the rear subframe so it's impossible to remove unless the frame is taken off the bike.
 
To close this out, in case someone finds this thread in future searches, for those that are not into the DIY approach (and it is not easy as far as I can gather), I dropped my bike into Motoscot yesterday and they refurbished my pump for £320 (and gave me a loan bike for the day). Bit out of my way but seemed by far the best option to me. Definitely recommend Motoscot.
Nick
 
Why do they use sealed for life shock absorbers that cost around the same for a pair when the shocks can be rebuilt for £150 each (suspension specialists) or totally replaced with better units (Wilbers) for less money than new from BMW.
 
Bendy toy said:
Why do they use sealed for life shock absorbers that cost around the same for a pair when the shocks can be rebuilt for £150 each (suspension specialists) or totally replaced with better units (Wilbers) for less money than new from BMW.
Click to expand...

Based on the specification of the shocks, and the volume manufactured, it was suggested to me by a specialist that they probably cost BMW £30 each. That's probably why!
 
How else are they gonna fund their glass showrooms full of free coffee and glossy sales bumph.
 
I would like to see Citroen DS/BX/CX style suspension. The DS was a costly car but BX wasn't and it gave adjustable ride height with self levelling and was very reliable. Add modern electronics and we'd have all sorts of advantages without the costs.
 
Nippy Normans supply Touratech, Wunderlich, Desert Fox and many other makes of accessories.
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