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14
15
disc brake service kit (code: 0721 294)
Don’t panic if the hose snaps! With the disc brake service kit and a separately available
spare hose (see spare parts pages 21/22), this can be repaired easily.
The brake levers, calipers and hoses of Julie and Clara are completely dif-
ferent and not compatible! The Julie is a low-pressure system and comes with
the same nylon hose that is used on MAGURA rim brakes. The Clara is a high-
pressure system and comes with a reinforced hose, the „MAGURA Disc Tube“
wearing also this imprint. The Disc Tube needs an additional insert for a proper
fitting.
Never mix and match either the hoses or other parts from the two models. Any
misuse might cause serious accidents!
1.
Remove the damaged hose from both the brake lever and the caliper. Cut off the
barbed adapter (caliper connection) with a sharp knife. Slide both the sleeve nut and
hose protector on the other side. All mentioned parts can be re-used. Throw away the
damaged hose.
2. Prepare a new hose:
the nylon hose of the
Julie
disc brake is identical with
the one of the MAGURA rim brakes. Clamp the hose as shown with the help of the two
clamping jaws (code: 0321 239) into a vice. Hose has to stick out 1,5cm as shown.
Use a nylon mallet to tap the barbed adapter
carefully
into the hose.
The barbed a dapter must be installed as shown. Never heat up the hose to
install the barbed adapter. This might cause the hose to burst with total failure
of the complete brake system.
3.
Correctly installed barbed adapter.
4.
Tighten the prepared end of the new hose onto the caliper.
Tightening torque:
Julie: 4 Nm
Clara: 6 Nm
5.
Measure the requested length of the hose you need and shorten the hose accor-
dingly with a sharp knife. Slide on the hose protector, sleeve nut and a new olive onto
the hose. Push the hose with the sleeve nut and the new olive
fully
into the brake lever
and tighten the sleeve nut with an 8mm open-end wrench.
Tightening torque: 4Nm/34 in.lbs.
6.
Fill the brake as described in chapter 9.
Prepare a new hose:
Only Clara
needs the reinforced MAGURA Disc Tube (wearing
also this imprint). One end of this hose comes with a pressed fitting, which has to be
screwed into the caliper as described above.
Tightening torque: 6Nm/51 in.lbs.
NEVER shorten the MAGURA Disc Tube hose at the end with the pressed
fitting. You could no longer use this hose then.
Install the hose of your Clara as described in chapter 6.
After the installation of a new hose you will always have to refill the brake.
The following chapter 9 describes who the filling has to be done.
Brake Oil: MAGURA disc brakes use as transmission medium low viscosity
mineral oil, the biodegradable MAGURA Blood. Contrary to DOT brake liquid
the MAGURA Blood does not irritate human skin or strip the paint of your
frame. Moreover it does not absorb water like DOT and does not have to be
changed regularly. What sounds unbelievable is a fact: you can use your bra-
kes over years without having to touch them (except brake pad change!)
1.
Loosen slightly the clamping screw of the brake lever with a 5mm allen key and turn
the brake lever so that the reservoir is positioned horizontal. Slightly tighten the
clamp
screw in that position.
2.
For filling and bleeding a MAGURA disc brake you will need the disc brake service kit
(Code: 0721 294) including all necessary tools.
9. Filling and bleeding a brake
1,5 cm
}
8. Repairs
