Maintenance - Magura Marta SL Magnesium Series Workshop Manual

7. Maintenance, brake pad change
12
Brake Oil: MAGURA disc brakes use as transmission medium low viscosity mineral
oil, the biodegradable MAGURA ROYAL BLOOD. Contrary to DOT brake fluid the MAGURA
ROYAL 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 brakes over years without having to touch them
(except brake pad check and change!)
Always make sure that the brake system does not have any leaks by activating
the lever blade, holding it and checking the hose connections and reservoir cover for
eventual leaks. Consult a trained technician in case of leaks. Leaks cause poor bra-
king performance with possible serious accidents!
As to hints about repairs of the hose see page 14 onwards..
Brake pad wear: The brake pads are subject to wear due to friction between
rotor and pads. The Marta disc brake features a fully automatic pad wear adjust-
ment. Regularly check the thickness of your brake pads and replace them, if neces-
sary!
Control and replacement of the brake pads
Never touch either the rotor or the brake caliper after long braking as this may
cause serious burns.
Control of pads.
Squeeze the lever blade with the wheel mounted and hold pressure.
Hint: Use eventually a rubber band or a cable tie for this.
Check out whether the "finger" of the transport device fits in-between the "ears" of the
brake pads. On the picture on the left this is NOT the case, the pads must be chan-
ged! Minimum thickness of pads including holder is 2,5 mm. Change always both
pads simultaneously!
Here the "finger" of the transport device fits between the "ears" of the brake pads. The
pads are still o.k. Remember: the lever has to be pulled during this procedure!
Pad replacement.
1. Remove the wheel so that you have free access to the brake caliper.
Push both brake pads back by putting the transport device or a flat blade screwdriver into
the gap. Move the screwdriver slowly back and forth until both caliper pistons are fully
retracted and flush with caliper body.
Never push back the pistons without the brake pads mounted!