User Guide

41
Adjustment- Disc Brakes
On some models of Fisher bicycles, the distance from the handlebar grip to the brake
lever can be adjusted to fit your hand size. To adjust the reach, squeeze the brake lever
while turning the reach adjustment screw (Fig. 59). On brake levers for hydraulic activated
disc brakes, the reach adjustment screw may be at position ‘B’. Try the different settings
until you find a position that fits your hands. After adjusting the brake reach, you may
need to re-adjust the brake cable length by rotating the barrel adjusters, as explained in
the following paragraphs.
Disc brakes are essentially self adjusting as long as the brake is correctly aligned
and centered over the disc rotor. If the rotor is rubbing, the brake caliper alignment
may need adjustment. To make this adjustment, first loosen the brake attachment
bolts. While applying the lever fully, gradually tighten each attachment bolt as
specified in Inspection.
Do not operate the disc brake lever when the rotor is not in the caliper. Self adjusting
disc brakes automatically set the distance from the pad to a point of contact, usually
the rotor. However, if the lever is pulled with the rotor removed from the brake, the pad
clearance will be set from the opposing pad. This results in only 0.5mm between the pads
so the rotor can not be re-inserted in the brake. To fully open the pads, remove both brake
pads by pulling outward on the small pad tab. With a 12mm box end wrench, push each
piston out as far as it will go being careful not to press on the brake pad locating post.
Reinstall the pads by sliding them into position, reinstall the wheel, and check the brake
adjustment as in Inspection.
If the brake lever of a cable actuated disc brake can be pulled fully to the handlebars,
adjust the brake cable tension. To do this turn the brake cable adjusting barrels found
on the brake levers. To decrease the lever travel necessary to actuate the brake, turn
the adjusting barrel counter-clockwise. To increase lever travel, turn the adjusting barrel
clockwise. If the lever travel cannot be adequately adjusted in this manner, loosen the
cable anchor bolt on the brake until the cable is loose. Screw the barrel adjuster all
the way in clockwise. Pull the cable taught and follow the procedures in Inspection
to re-tighten the cable anchor bolt. After the brakes are adjusted, test the brakes by
applying maximum braking force to the levers. Ensure that the cable does not slip.
Lubrication
Every 3 months, lubricate your brake lever pivots with Wrench Force
®
synthetic chain
lube or a similar light oil. Disc brakes require no lubrication.
Lubricate brake cables with a thin layer of Wrench Force
®
synthetic grease or a similar
lubricant when installed.
Cable Installation
To install a brake cable in cable actuated disc brakes, note the path of the old cable,
loosen the brake cable anchor bolt and remove the worn cable. Turn the adjusting barrel
on the brake lever fully clockwise. Grease the new cable and reinstall, feeding it along
the same path as the old cable. Make sure that the cable’s leaded end is seated properly
in the brake lever body and that the housing is properly seated in the lever. After
threading the cable through the anchor bolt, follow the directions in the Inspection
and Adjustment sections. Finally, cut the cable so that no more than 2 inches (51 mm)
extends beyond the anchor bolt. Crimp a metal cap or place a bit of solder on the end
of the cable to prevent fraying.
WARNING
If you are not certain your brakes are working properly, or if you
suspect a problem with your brake cables or hydraulic hose do not
ride your bicycle. Refer to the instructions in the appropriate section
of this manual or take your bicycle to your Fisher dealer for service.
THREE
Inspection,
Adjustment
&
Lubrication