Disc brake
rotor fitting procedure.
Notes.
1, When
fitting replacement disc brake rotors, you should ALWAYS fit new disc brake pads. If old pads are re-used, the
rotor may become damaged and distorted and braking performance may not meet
expectations.
2. ALWAYS
reset and adjust your calliper and pads as if it was a brand new calliper
installation, or braking performance and function may not meet expectations and
damage / distortion will occur to the rotor.
3, Before
fitting the rotor, check the rotor for “warping” by placing it on a flat
surface such as a pane of glass, if the rotor is “warped” it will “rock” when
even pressure is applied around the edges.
All of our
rotors are surface ground on both sides to ensure they are perfectly flat.
4, No claims
for “warped” or “distorted” rotors will be accepted after the rotor has been
installed on the hub / bike.
5, Side
deflection of up to +/- 0.15mm is within both BS and EN required standards for
cycle disc brake rotors.
Fitting
instructions.
After
removing the old disc rotor, clean the hub mounting surface with a small wire
brush to remove any oxidisation or dust / dirt / foreign objects. Ensure the
surface is PERFECTLY clean.
Lightly
apply a film of mineral oil onto the surface of the hub where the rotor is to
be fitted.
Position the
rotor, lightly apply a film of mineral oil onto the surface of the rotor where
the 6 retaining bolts fit.
Loosely fit
all 6 rotor bolts.
Lightly
tighten all 6 bolts using a short allen key or an electric screwdriver with the
torque set on the LOWEST possible setting. You must loosely tighten the bolts
in a diagonal sequence, 1,4,2,5,3,6. ALWAYS
follow this sequence.
Spin the rotor
and you will see the rotor runs true within the required EN and BS tolerances.
Using a
torque wrench, set the torque wrench to 3NM (2.1 Lb ft) and tighten all bolts
to this torque following the diagonal tightening sequence 1,4,2,5,3,6.
Once
complete,, set your torque wrench to 4.5NM (3.25Lb ft) and repeat the diagonal
tightening sequence 1,4,2,5,3,6.
Your rotor
installation is complete .
Using a soft
cloth, remove any mineral oil that may still be on the rotor or hub.
You should ALWAYS reset and adjust your
calliper as if it was a brand new calliper installation, or braking performance
and function will not meet expectations and damage will occur to the rotor.
