Drum Brakes - Orbea ALMA Instruction And Maintenance Manual

the disc. Only use isopropyl alcohol.
Once a month, make sure that the disc brakes are not worn. If the brake pads have a thickness
less than 1mm, they should be changed. You must also check that the brake pads are correctly
positioned at a distance between 0.25 and 0.75mm from the disc when the brakes are not
applied. Turn the wheel. When the levers are not depressed, the brake pads should touch the
discs as little as possible.
The torque for disc brake bolts is:
Caliper mount bolt: 11.5-12.5Nm
Caliper bridge bolt: 11.5-12.5Nm
Disc screws: 5-6Nm
Pinch bolt: 6-8Nm
Once a month, check the brake cables of your bike for twisting, rust, broken threads and frayed
ends and check that the housing is not crimped, cut or worn. Replace any component that does
not pass inspection.
Adjustment
Adjusting the reach of the brake levers
- Locate the reach adjustment screw between the lever and the handlebar, near the lever pivot.
- To increase the reach, turn the screw clockwise. To reduce the reach, turn the screw counter-
clockwise.
Adjusting the gap between the pad and the disc
- Turn the pad adjuster bolt. To increase the pad gap, turn the adjuster clockwise. To decrease
the pad gap, turn the adjuster counterclockwise.
Aligning the brake with the disc
- Loosen the caliper mount bolt.
- Depress the lever as much as possible and gradually tighten the bolts as specified in the
inspection section.
Removing brake pads
- Remove the wheel
- With your fingers or needle-nose pliers, pull the tab of the brake pad.
Removing the wheel
- Removing the wheel with disc brakes does not require you to take apart the braking system.
Carefully slide the disc out of the brake.
- When you are going to replace the wheel, carefully guide the disc between the brake pads. If
you press the edge of the disc against the pads, they can crack or be damaged and need to be
replaced.
Lubrication
- Lubricate the pivots every three months with synthetic lubricant, as you would with the chain.
- The brake pads do not need to be lubricated.
Installing the cable
Follow the installation instructions explained for Cantilever, V-Brake and Caliper brakes.

DRUM BRAKES

Introduction
The braking mechanism is found within the rear hub, but unlike coaster brakes, it is applied by
hand. The lever is connected to the brake through a cable, and the system has the following
components:
- Brake lever
- Brake cables and housing
- Rear hub
Inspection
You should check that the bolts of the braking system are well tightened and that the brake
cables have no rust, broken threads or frayed ends. You must also check that the housing is not
crimped, cut or worn. Replace any pieces that do not pass your inspection.
Adjustment
Reducing lever reach
- Loosen the adjustment barrel and turn the screw. To increase the reach, turn it clockwise. Turn
it counterclockwise to reduce the distance.
- After adjusting the reach, tighten the barrel.
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