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By AndyW June2005 (6 months after I did the job!...oops)
A much more straight forward job than changing the brake lines (see
brake line install FAQ) with
perhaps the exception of getting at the clutch hose retaining clips
behind the right-hand side frame spars. I'm sure the job can be done
without even lifting the tank but I think it's a lot easier with the
tank up and the airbox out so that you can see what you are doing (see air
box removal). In theory the clutch line will just pop out of the
retaining clips with a bit of persuasion but the hose retaining
rubbers are a tight fit in the clips.
I fitted Goodridge Stainless Steel Braided lines - see
here
for info on brake and clutch lines at a great price.
Before we start a before photo:

And another showing the location of the hose retaining clips behind
the frame spars.

The top one can be seen looking through the hole in the frame and
the bottom one can also be seen if you get down on your knees (or
have a hydraulic lift/workbench ;-). The middle clip is part
of the bracket that holds the throttle idle/tick-over adjuster
screw. Right lets get on with it:
Tools:
You'll need an 8mm open ended spanner for the calliper bleed nipples
and 14mm ring spanner or socket to undo the banjo bolts. A torque
wrench and 14mm socket to tighten the new banjo bolts. 10mm ring
spanner or socket and a cross head/Phillips screw driver:
| Torque settings |
N-m |
Kgf-m |
lb-ft |
| Banjo Bolts (All) |
23 |
2.3 |
16.5 |
| Bleed Nipple (F) |
5.4 |
0.54 |
4.0 |
Doh!...after doing the photo above, thought to check the manual!
This is better.....

Before you start:
First thing to do is wrap some clean cloth around the top of the
brake hoses to stop any leaked fluid running down them. Cover the
fuel tank and wheels, any areas likely to be damaged by spilt or
splashed brake fluid, with a couple of layers of clean cloth also.
Keep that wet cloth close to hand!
You'll also need a length of plastic tube with a suitable internal
diameter to make it a tight fit on the bleed nipples (possibly two
different tubes as the rear brake bleed nipple is larger than the
front!). And of course something to collect bled brake fluid in.
Alternatively use an 'easy bleed' kit.
**Quick warning**
Brake fluid damages paint work....surprisingly quickly! Apparently
the right way to deal with spills is to rinse the brake fluid away
with clean cold water. I just kept a wet cloth to hand, do not wipe
spills with a dry cloth, paintwork may still be damaged!
Step 1:
Removing the old clutch hose:
Remove the clutch reservoir cap - remove the rubber diagram ('bellows')
within.
Gently dry/clean the diaphragm with a lint free cloth and pop it
in a plastic bag to make sure it doesn't pick up any dirt.
-
Using your plastic tubing/easy bleed kit, drain all brake
fluid, don't undo the bleed nipple too much or brake fluid leaks up past the
thread of the bleed nipple instead of through your plastic tube!
-
Close the bleed nipple and loosen the banjo bolt from the
clutch slave cylinder taking care to catch the few last drops of brake fluid that'll run out.
-
Pull the banjo bolt and wrap the hose end in a piece of
cloth, just in case :-)
-
Undo and remove the top banjo bolt from the clutch master
cylinder- remove the hose being
careful that no brake fluid drips.
-
Wipe away all signs of brake fluid from the calliper and master
cylinder where the banjos have been removed with a wet cloth...you've still got lots of dry cloth
everywhere?!
Most likely the inside of the clutch reservoir will have a
fine film of dirt coating it (a build up of miniscule rubber particles
from hoses and seals). See here for information on a
revision to the clutch slave cylinder and
clutch slave
cylinder maintenance. Carefully wipe the reservoir out with a lint free cloth.
Unbolt the retaining braket/clip located on the head-stock of the
frame.....

...and unclip the hose from the further three clips inside the
frame. Before you pull the hose down through the frame to remove it
make a note of how it's routed in relation to other cables that run
down from the handlebars.

Feeding the old hose down through the frame will be considerably
easier if you've taken my advice and at least lifted the tank.
Better still, if you've removed the air box you'll find it easy to
guide the hose through and stop it getting snagged.
Step 2:
Install your new braided clutch line:
Straight forward really.......feed the new line through from the
clutch slave cylinder up through the frame following the same route
as the old hose. How many rubbers, for locating in the hose
retaining clips on the frame, there are on your new line will depend
on the brand. Some people dispense with using the bottom clip but I
removed a rubber from the old hose and used a small 'tie wrap'
(cable tie) to hold it and the clutch line in the bracket (braided
lines have a smaller diameter than the original rubber hoses hence
the need for a tie wrap). Tighten the line
unions/banjo bolts once you are satisfied that the new line is
located right. Only tighten the top union gently initially and then
move the bars from lock to lock to make sure the clutch line is
correctly positioned - once happy torque it up.
All that's left to do is refill the system with brake/clutch fluid
and bleed it - much the same procedure as described here in the
brake
line install FAQ Job done:



Notes:
1) Are crush washer reusable? I don't know, some say yes and
some say no. According to some if you tighten up a banjo bolt to the
specified torque and then decide you don't like the orientation of
the line you can't just loosen the bolt (even if its only been tight
for a few seconds), reposition the line and retighten. You must
disassemble the fitting and reassemble with brand new crush washers.
To play safe I recommend that you only place enough torque on the
banjo bolts to keep the lines stationary during the install until
all lines are run and all attachment points are decided upon. Then
as the last step the banjo bolts can be torqued to the proper specs.
This way you'll be free to make some changes without having to
replace the crush washers. As a contingency and for the sake of a
few pennies, order a few spare crush washers :-)
2) Please note that the correct torque settings for the bleed
nipples/valves are very low (as specified in the
Tools section) - over-tightening can easily result in the
threads being stripped in the callipers. It's probably a good idea
to try and get a feel for what the proper torque is before trying to
bleed the system. This can easily be done by setting your torque
wrench to the proper torque and giving a twist to any nut with a
higher torque spec.
There should be no need to exceed exceed the specified torque
settings. If you think you need to use more torque than the spec
don't do it - you have some other problem that needs to be remedied.
After installing my new
lines I was sure I passed enough fluid through the system and
tightened the bleed nipple but after a test ride there was signs of
a small amount of brake fluid around the base of the nipples. The
natural tendency was to tighten more assuming the valve must still
be open a bit but I knew I had already tightened them properly.
Having asked around apparently it is not unusual for a little fluid
to seep up past the nipple threads for the first few rides - just
wipe it off with a cloth and keep an eye on them......they should
dry up soon.

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