Riding home from work tonight for some reason thought I'd try the rear brake with a bit of effort (as I normally only use it at low speeds) 'just to see that it still works'.


Only going ca. 10 mph I pressed pedal and rear locked up (ABS did not appear to activate - maybe too low speed?).  I did this twice and then carried on...a couple of hundred yards later decelerating for a junction the bike started to slow down by itself!


Rear brake was was on and pads smoking.


Hmmm - I released the pressure via the bleed nipple which obviously released the piston pressure.  Tried brake again but nothing so went home whilst learning to use just front brake in traffic which was a bit alien until I go used to it.


Read up about the ABS system when home and investigated a bit more.  The symptoms are as follows; pumping the lever does apply the brake pads progressively (albeit slowly) but it is like there is a non-return valve in the system as the pressure does not relieve and the brake just gets tighter and tighter


Looking at the detail in the service manual all I can assume is that the ABS spool valve is stuck in the emergency braking position so that the fluid flow from the master cylinder is going via the orifice - that said I'd expect the pressure to still release. As I said the it's like there is a non return valve.  Also the valve spool in the block appears to be in the de-energised position (i.e. you can push it in by hand - which makes no difference incidentally).


There is no ABS warning light lit and the front brake works as normal (including ABS function - I tried it on gravel track opposite my house).


Anyone got any ideas?

Update 21-Aug:
took in to JAX motrocycles in York (Yam dealer) - they confirmed that there is a fault internally in the ABS hydraulic/pump unit - rear brake would not bleed through the hydraulic unit - new replacement ca. £700!  Their suggestion is to convert to 'standard' and junk the ABS unit as cost is prohibitive.


Update 22-Aug:
hydraulic unit is fooked - cannot bleed through it - I've tried everything - looking on a FJR forum the diagnostics cannot detect a spool failure - I've used the test connection to run the diagnostics as per the service manual - all good (but obviously isn't!) - can't find a 2nd hand unit (well other than one in Denmark for £500 - so going to convert to 'non ABS' (ordered the HEL lines today) - BTW new unit is over £1,200!

Great pics and commentary - I've still not managed to get to Europe on the bike - maybe Spring Meet 20 !

have always got mine from bandcexpress.co.uk


...but I'm currently downgeared on an AFAM 1down,1up setup from Bike Torque Racing with DID Gold Super X Ring Chain from urbanbikeshop on Ebay - both  quick delivery

Good news Heath has found another victim, and Stef (on forum) is coming which means only TWO bunks to fill. 


As the day is approaching if you're coming and haven't paid me anything yet, then please get in touch for payment details!

OK - FOUR bunks still to fill - get canvassing


Status updated.


Note for vegetarians as I still buy veg. food, you don't pay your 'meat' share but the contribution is £3 per night (seems fair to me)


Link to Spring Meet calling cards added: [size=78%]https://www.dropbox.com/s/di7k6jeygr70k7o/FOC-U%20Spring%20Meet.docx?dl=0[/size]

Went to the Spring Meet by unicycle

@ tommyardin - see link from Tefer (thanks Tefer)


basic form is tip up on the Friday (26-May) - some ride up for early afternoon, others after work - Friday pm BBQ, banter & beer
Saturday - full cooked breakfast - then rideout of your choice including local bimble with local bimblers - Sat pm BBQ, banter, beer, live music
Sunday - same as Saturday but more subdued evening - some take off for home
Monday - piss off 'ome


Sign up here! - [size=0px]http://foc-u.co.uk/index.php/topic,20238.0.html[/size][/color]


@Tefer - you coming then?

On my FZ1-S, still on PR2s (and will remain so until none left) - PR3s wear quick - PR4s allegedly not but way more expensive over PR2s - I'm an 'enthusiastic' rider and never had any issues with PR2s - they are very forgiveable - have ridden this last winter in shitty weather with no issues grip wise (but obviously right hand a little more restrained).  Have tried BT016 before but obviously not an all rounder tyre but very confidence inspiring.

got your money thanks John (£100)


I've managed to get a lad I working with at the moment interested - he's coming camping with his missus    (Dan and Amie)


the rest of you come on 

http://fazerowners.yuku.com/topic/24787/Hobbsy39s-Twisty-Route-Rideout-Extravaganza

1) fucknumpties in cars who drive like they are in some kind of long trailer HGV combination and find it necessary to take a sweeping turn when turning either left or right and annoying the fuck out everyone (me).


The worst are the right turners who, whilst initially sat in what most would consider the correct positron (offside to the center of the road), then proceed with a little shimmy to the left before proceeding to turn right...

Tom


Will be good to meet you - all three of us will be congregated around the Moffat Ram ca 13:30.


Met up with Tom in Moffat: