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Marta 203/203
Workshop manual
Magura Marta 203/203 Workshop Manual
Workshop 2011 disc brakes
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
Introduction
Safety Instructions before the First Ride
Safety Instructions before Every Ride
Transport of the Bicycle
Brake Installation
Shortening the Hose
Maintenance
Repairs
Bleeding and Filling
The Disc Brake Wheel
Trouble Shooting
Accessories
Warranty
Spare Parts Exploded View
Tuning Adaptors for Postmount Caliper
Warning
Advertisement
Quick Links
1
Brake Installation
2
Shortening the Hose
3
Maintenance
4
Repairs
5
Bleeding and Filling
6
Spare Parts Exploded View
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WORKSHOP 2011
DISC BRAKES
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Summarization of Contents
Our Disc Brake Range and Recommended Use
Freeride Brake Application
Brake selection for riders prioritizing downhill capability and tough terrain.
Enduro Brake Application
Brakes for riders who prioritize downhill fun, coping with technical descents and bike park use.
All Mountain Brake Application
Optimized mix of light weight and stability for versatile trail riding.
X-Country Brake Application
Brakes for mile-after-mile riding on dusty trails and hard tarmac.
XC Race Brake Application
Race-oriented brakes focused on minimum weight for competitive performance.
Welcome to the Passion People!
Before the First Ride
Brake Activation and Familiarization
Learn proper braking technique and operation in a safe area.
Running-in New Brakes
New brakes require at least 30 braking cycles from 30 km/h for maximum power.
Riding in Extreme Conditions
Use both brakes simultaneously for bikes over 100kg or gradients over 15%.
General Bike Handling Practice
Practice handling other bike components like gears and suspension in a safe area.
Safety Gear Usage
Always wear a helmet and suitable clothing/footwear.
Before Every Ride Checks
Quick Release Skewer Check
Ensure wheels and seat post quick releases are correctly mounted and closed.
Brake Lever Pressure Check
Verify brake lever pressure provides full performance before touching handlebars.
Transport of the Bicycle
Brake Lever Activation During Transport
Never activate brake levers without brake pads and wheels mounted.
Transport Device Usage
Use the provided transport device between brake pads when removing wheels.
Rotor Protection During Transport
Carefully remove wheels, protecting rotors from damage or contamination.
Securing Lever During Upside-Down Transport
Secure lever blade with a rubber band or tie when transporting bike upside-down.
Brake Installation
Required Tools and Components
List of tools and components needed for brake installation.
Mount Brake Lever to Handlebar
Mount the brake lever to the handlebar using a 5mm allen key.
IS Mounts Caliper Installation
Install caliper onto fork or frame using adaptors for IS mounts.
Caliper Installation with Wheel
Mount caliper with wheel and rotor, then squeeze lever and tighten bolts.
Rotor Mounting on Hub
Mount rotor to hub using Torx T25 bolts, ensuring correct rotation direction.
Wheel Installation and Quick Release
Install wheel with rotor between pads, tighten quick release on opposite side.
PM Mounts Caliper Installation
Mount caliper directly onto fork for Postmount (PM) for specific rotor sizes.
Reach Adjust Procedure
Adjust lever reach using a 2.5mm Allen key for optimal hand position.
Shorten the Hose
Prepare Caliper for Hose Removal
Remove wheel and push back brake pads to access caliper.
Loosen Brake Lever Clamp Screw
Loosen clamp screw and ensure reservoir is horizontal before hose removal.
Remove Hose from Brake Lever
Unscrew sleeve nut at brake lever and carefully pull out hose to avoid oil loss.
Shorten the Hose Safely
Shorten hose with a sharp knife or MAGURA cutter, avoiding saws or pliers.
Install New Hose Insert
Press a new insert manually into the hose until fully seated.
Secure Hose with Mounting Device
Clamp hose with mounting device or in a vice for insert installation.
Connect Hose to Brake Lever
Slide sleeve nut and new olive onto hose, then tighten to brake lever.
Leak Check and Pad Seating
Check for leaks and pump lever to seat pads properly.
Maintenance and Brake Pad Change
Brake Oil and System Longevity
MAGURA uses low viscosity mineral oil for durable, low-maintenance brakes.
Brake Pad Wear Check
Regularly check brake pad thickness for wear and replace if necessary.
Brake Pad Replacement Procedure
Step-by-step guide for removing and installing new brake pads.
Remove Brake Pads
Remove brake pads by releasing the fitting screw and pulling them out.
Clean Brake Components
Clean brake pads with a dry rag and the brake body with a clean rag.
Mount New Brake Pads
Install new pads ensuring the friction side faces the rotor, tighten fitting screw.
Check Piston and Pad Alignment
Ensure pistons are pushed back and pads are flush with the caliper body.
Set Brake Pads by Pumping Lever
Pump the lever several times until pads seat properly and lever feels firm.
Repairs and Hose Replacement
Disc Brake Service Kit for Repairs
The service kit contains tools for bleeding and repairing the brake.
Prepare New Brake Hose
Use reinforced MAGURA Disc Tube hose, screw fitting into caliper.
Tighten New Hose to Caliper
Secure the prepared end of the new hose to the caliper with the specified torque.
Mount Brake Hose as per Chapter 6
Follow Chapter 6 instructions for mounting the new brake hose.
90° Hose Fitting Option
Compatibility with 90° hose fittings is shown, refer to page 20.
Filling and Bleeding a Brake
Position Brake Lever Reservoir
Loosen clamp screw and turn lever to position reservoir approximately 15° upwards.
Required Disc Brake Service Kit
Essential tools for filling and bleeding are included in the disc brake service kit.
Prepare Filler Tube and Syringe
Fit M6 barbed fitting with O-ring to tube, fill syringe with mineral oil.
Prepare Caliper and Attach Syringe
Remove pads, insert transport device, fix caliper vertically, and attach syringe.
Perform Oil Transfer and Air Removal
Transfer oil between caliper and reservoir syringes, actuating lever to remove air.
Final Bleeding Screw Tightening
Close bleed screw, remove syringe, and re-install pads and wheel.
The Disc Brake Wheel
Trouble Shooting
Insufficient Brake Power or Pressure Point
Addresses issues with brake power and lever pressure point.
Squealing Brake Noise
Solutions for squealing brakes, including frame alignment and pad issues.
Contaminated Pads or Rotor
Guidance for cleaning contaminated rotors and replacing pads.
Wheel Mounting Difficulties
Troubleshooting for wheels that cannot be mounted, including quick release issues.
Rattling Noise or Rough Deceleration
Addresses rattling noise and rough deceleration, often related to pad wear.
Leaking Hose or Brake System
Solutions for leaks in the hose or the overall brake system.
Accessories
Warranty Information
Spare Parts and Tightening Torques
Brake Lever Complete Part Numbers
Part numbers for complete MAGURA brake lever assemblies, including left and right sides.
Caliper with Pads Part Numbers
Part numbers for MAGURA brake calipers, including those with pads.
Adaptors and Mounting Alternatives
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