16
Figure 6.
ADJUST THE PADS
Back the adjustment knob off (counterclockwise) un-
til the rotor spins freely. Now you can dial the pad in
or out until you find the
brake action you prefer
(make sure, of course,
that there’s no drag on the
rotor). If you can’t seem to
get the feel you like, or the
rotor is dragging, repeat
Figure 5.
FINE TUNING
BEFORE EACH RIDE
• Check cables for signs of wear or fraying.
• Squeeze the brake lever firmly and check for proper
brake function. Adjust for pad wear if necessary.
• Check pads for wear and replace if necessary.
• Ensure rotors are free of foreign substances and
oils.
CABLE SLACK ADJUSTMENT
Use the barrel adjuster on thebrake
lever to remove any cable slack from
the system. Turn the adjuster out until
there is no free play in the lever but not
so far that the torque arm on the caliper
is advanced. The torque arm should
return completely when the brake lever is released. If
necessary, repeat Figure 6.
Note: New cables will stretch and require adjustment.
PAD BREAK-IN
It may take anywhere from 20 to 40 complete stops
to break in Avid pads. You may begin to notice an
increase in braking power after the first ride. Brake
noise can occur not only during the break-in period
but off and on throughout the life of the brake pads.
Noise is dependent upon factors such as brake setup,
rider weight, riding style, braking style, and riding
conditions (i.e. dust, soil, and contamination of fric-
tion surfaces).
CARE AND CLEANING
Extreme care must be taken when cleaning both the
bicycle and its new disc brakes. Under normal use,
it is not necessary to clean the caliper rotor or pads.
If necessary, use only water and dish detergent to
wash the caliper and rotor – being sure to thoroughly
rinse all soap residue from the rotor. Dry with a clean
paper towel.
SPRING TENSION ADJUSTMENT
If necessary, spring tension can be
adjusted by turning the spring tension
adjustment screw with a 2.5mm hex
wrench.
Turning the screw clockwise increases
spring tension,
which equals harder lever pull.
PAD WEAR ADJUSTMENT
Over time, you will need to compensate for brake
pad wear.
You can do so with two
very simple adjustments:
1. Unscrew (counter-
clockwise) the barrel
adjuster on the caliper.
2. Turn the inboard pad
adjustment knob clock-
wise.
Both of these adjustments move the brake pads
closer to the rotor. You do need to adjust both pads
as they wear.
Try different settings until the brake feels just the way
you like.
NOTE: While you can perform a similar adjustment
on the barrel of your brake lever, we suggest that you
adjust for pad
wear at the cali-
per. That way you
leave the brake
lever for on-the-
fly adjustments.
PAD REPLACEMENT
A pad should be replaced when its total thickness
(backing plate and friction material) is less than
3mm.
1. REMOVE THE OLD PADS
Back the inner adjustment knob all the way out
(counterclockwise). Pull the pad spreader clip from
between the pads, then pull the pads out of the cali-
per one at a time.
2. INSTALL THE NEW PADS AND SPREADER
Insert the new pads one at a time into the caliper.
VERY IMPORTANT: MAKE SURE YOU PLACE
THE BLACK PAD ON THE INNER SIDE (TO-
WARDS THE WHEEL) AND THE BLUE PAD ON
THE OUTSIDE (AWAY FROM THE WHEEL.)
ONCE THE PADS ARE IN THE CALIPER YOU
Barrel adjuster
Make sure you tighten the
locknut after you adjust.
Summary of Contents for R750
Page 1: ...RAMBO Bike Owner s Manual For Pedal and E bike Models ...
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