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18-10-2017 Buell 1125 brake disc, Buell XB tech

14-11-2017 - 18-10-2017 Buell 1125 Front brake disk, preparing XB for licence inspection, diagnose XB12S 2008 no start, Buell XB running bad 2x

test riding this buell was like a rocking horse... front disk is warped , needed to brake 20 meter earlier going in to a corner , than normal — Brake disc can be found here: https://www.twinmotorcycles.nl/webshop/artikel.asp?mc=1&aid=3356&cid=10056&s=&a=&aname=Buell_XB_1125_FRONT_brake_disc_with_TUV we advice to change the pads with installing a new disc..

with the caliper still on loosen the pad bolts  Brake disc can be found here: https://www.twinmotorcycles.nl/webshop/artikel.asp?mc=1&aid=3356&cid=10056&s=&a=&aname=Buell_XB_1125_FRONT_brake_disc_with_TUV we advice to change the pads with installing a new disc..

wheel out and remove the disk bolts  Brake disc can be found here: https://www.twinmotorcycles.nl/webshop/artikel.asp?mc=1&aid=3356&cid=10056&s=&a=&aname=Buell_XB_1125_FRONT_brake_disc_with_TUV we advice to change the pads with installing a new disc..

check the mounting hardware.. especialy the springs the need to move freely  Brake disc can be found here: https://www.twinmotorcycles.nl/webshop/artikel.asp?mc=1&aid=3356&cid=10056&s=&a=&aname=Buell_XB_1125_FRONT_brake_disc_with_TUV we advice to change the pads with installing a new disc..

wheel back in place Brake disc can be found here: https://www.twinmotorcycles.nl/webshop/artikel.asp?mc=1&aid=3356&cid=10056&s=&a=&aname=Buell_XB_1125_FRONT_brake_disc_with_TUV we advice to change the pads with installing a new disc..

and 50 NM for the caliper bolts. Brake disc can be found here: https://www.twinmotorcycles.nl/webshop/artikel.asp?mc=1&aid=3356&cid=10056&s=&a=&aname=Buell_XB_1125_FRONT_brake_disc_with_TUV we advice to change the pads with installing a new disc..

i will test this for a short test ride, so the disk is braking before the customer comes to pick up the bike Brake disc can be found here: https://www.twinmotorcycles.nl/webshop/artikel.asp?mc=1&aid=3356&cid=10056&s=&a=&aname=Buell_XB_1125_FRONT_brake_disc_with_TUV we advice to change the pads with installing a new disc..

import XB12S . very nice bike, need to prep it for the oficial proofing 

the customer brought his bike somewhere else before.. did not have a good feeling about it.. ecm was needed. but put in loose 

battery was put in loose 

tps was not really good set.. 

neutral light not working

and kill switch not working 

and the bike would not run at all ... at least 1 plug is faul.. so airbox of , the stack is not mounted snug to the trottle bodie 

base plate of to check the rear plug 

ok that one is faulled , i put a new one in

checking the front plug 

wires are almost new 

front plug is also fauled 

new plugs in.. tps reset very easy to feel and see the butterfly is closed 

after zero back to 5,3 deg, and she is running now

kill switch not working.. sometimes i wonder why things like this are done ? the kill switch is looped 

the original wires / switch is working 

so wires back to original and contact

neutral light 

way to much resistance , needs a new switch 

taking the belt tension of to get the belt of the front pully 

wheel bearings are good 

belt of the pulley.. and with thin 5/8 socket you can unscrew the neutral switch 

check ... works

jamming the electics back behind the cover

gearbox breather hose pulled back a little so there is more clearance to the header 

battery tray is loose

and battery is loose... as these bike vibrate some form of fixation would be good 

first ecm mounting with bolts 

battery strap on.. made a special tool for this 

and longer passenger peg bolts in with nuts to fasten the battery tray 

she is a runner ... very nice bike 

XB12 2009 no starting..

remove the left scoop to get to the wires 

there are 2 connectors behind the scoop 

the one with + and - on it , is from the regulator to the bike

starting.. Ohm

to see i the stator is grounded , what would indicate a short circuit , there is no ground connection .. good

next.. diode check to the regulator 

get your + from the regulator 

and take 1 off the terminals into the regualtor

measuring one way, the diode will open and let trough the testing voltage of your meter —

and the other way aroud it should indicate no connection .. hard to do a 3 hand job ;-) 

ok so the regualtor is also ok .. running test for the out put off the stator ? ! 

first lets check the battery .. ha.. ok.. battery is bad

Xb12 in from Belgium bad running to repair

re diagnosed the intake seals where leaking, tps was set really not good ect.. so first we drop the engine and do the seals 

airfiler of.. and a other hacksaw cut velocity stack.. so disapointing ... this will loose a few hp

rubbing clamps on wire harnesses... not good 

so engine droping 

axle loose to remove the belt tensioner 

just details.. the off side of the idler wheel is front — 

steering damper loose 

notice a steering damper like thi . will hurt your front fender !! 

termignoni removall 

one off the resons we started to make our own exhaust.. .continuesly having to deal with the premature failure from other exhaust brands

engine supported and dropping the front bolt 

a cut allen key is king for this job

plug cable are still ok even with the breather hose running next to it 

a little cleaning will do

as here also traces of the leaking gasket 

but first the manifold out 

with the engine down a better view on the rear head

cover of to expose the old orange seals 

the improved black seals are much beter 

and some cleaning..

manifold back in 

and engine up.. tq the front bolt to 66 NM 

covers on 

grrr.... what a crap mounting system 

setting the tps correct

and resetting the afv 

running warm.. and test ride 

Uly from Germany.. riding like a stuborn mule 

so lets see 

troube code indicate tps sensor ( 11 ) and exhaust valve ( 21 ) 

this wil not work well in the long run , i will reroute this

i want to check the tps wires.. but need to get more cable out , 

right side scoop of

?? mnnn ... ok so the right side scoop was only for looks... it did not give any cooling... the customer will be in for a surprice ;-)

unpluged the injector wires 

and taking apart the tps plug to check the wires / terminal connection 

wire and terminal look good , so re isolating 

and tps sensor off —

check the old and new.. as there are 2 versions

pres the sensor on and rotate to the mounting position

and tighten the screws 

setting the tps correclty 

and routing the wires good 

right scoop on.. and test ride.. customer will be happy bike runs like a dream