GIANT TECHNICAL BULLETIN

This instruction guide contains important information; please read it thoroughly. This guide is to be used in combination with the Owner's Manual of Propel & Envie series and the instructions from the manufacturer of the brake lever for setting up the SpeedControl brake correctly.

Precaution

• Always remove the wheel before installing SpeedControl brakes to the bicycle. This prevents the brakes from touching the wheel, which can cause damage to the wheel or brake unit.
• Find an authorized GIANT dealer for help if you have any doubts about your ability to set up the brakes correctly.
• Improper brake setup can cause loss of control, which may result in a fall from the bicycle and injury or death.

Brake cable routing

Please refer to the Propel & Envie series owner's manual and the manufacturer's instructions of the brake lever to route the brake cable internally through the frame.

Accessories

Left brake arm set

Components shown include: Brake Arm, Spring, Adjustment washer, Pivot bolt, Brake shoes.

Right brake arm set

Components shown include: Brake Arm, Spring, Adjustment washer, Pivot bolt, Brake shoes.

Brake Pad Set

Components shown include: Spacer, Pad mounting bolt, Bolt washer, Brake pad, Pad holder.

Note: Black spring is for the left brake arm set and silver spring is for the right brake set.

Tools required:

• Allen key
• 5mm
• 4mm

Parts List

Spring set

Part Number: 1471-TKBSPR-401

Part Description: Includes 2 springs and 2 adjustment washers. This set is used on all SpeedControl front and rear brakes.

Brake arms set

Part Description: The set includes one left and one right brake arm, plus small parts such as spring tension screw, brass bushing, etc. The new front (FT) brake arms are used on bikes produced from 01-May-2013. The shorter brass bushing section indicates new FT brakes.

Pivot bolts set (2 bolts per set)

• 1471-TKBBOL-403: Stainless steel bolts with 20.5mm pivot section for new FT set.
• 1471-TKBBOL-404: Titanium bolts with 20.5mm pivot section for new FT set.

Pad mount set (1 left & 1 right side of pad mount)

• 1471-TKBBRA-401: Regular alloy mount.
• 1471-TKBBRA-402: Lighter weight alloy mount.

Each side of the pad mount includes a pad mounting bolt, bolt washer, spacers, and the brake pad set as described previously.

Brake cable guide (noodle)

• 1471-TKBGUI-401: Regular cable guide.
• 1471-CM282A-301: Lighter weight cable guide.

Preparation

1. Check if brake accessories are complete.
2. Remove the wheel from the bicycle when installing or replacing brakes.

Installation of the brakes onto the frame

1. Attach the left side of the brake set to the seat stay. Insert the long spring pin into the pin hole, then fasten the pivot bolt. Follow the same instruction to assemble the right brake set to the seat stay.

   ⚠️ WARNING: The springs have a specific assembly direction. Assembling the spring in the wrong direction will cause spring malfunction. Examples of errors include:

   • Using a black spring on a right brake arm set.
   • Inserting the short spring pin into the frame.

2. Slightly loosen the left pad mounting bolt. Turn the pad parallel to the brake arm, then push the brake arm parallel to the seat stay.
3. Turn the pad set vertical to the brake arm, then fasten the pad mounting bolt.

   ⚠️ WARNING: Do not release the brake arm before fastening the pad mounting bolt. The outward force of the spring may suddenly push the brake arm back to its original position, which may damage the frame.

4. Process the right brake set the same as above.
5. Install the wheel to the bicycle.
6. Hold both side brake arms and pinch them together so the brake pads touch the braking surface of the rim.
7. Slightly loosen the pad mounting bolt, adjust the pad to be parallel with the brake surface. Then slowly fasten the bolt.

   Note: Use your finger as a stopper to prevent the pad from turning when fastening the pad mounting bolt.

Install the brake onto the fork

The procedures to install the front brake to the fork are the same as the rear brake installation. Please follow steps 1-7 to install the front brake onto the fork.

Align brake parallel and toe

1. Loosen the cable fixing bolt.
2. Set the barrel adjuster to a tighter position by turning it 6-7 rounds.
3. Thread the brake cable into the noodle, then pass it through the brake arm eyelet.
4. Pinch the brake arms to touch the brake surface, pull the brake cable tight. Then fasten the cable fixing bolt.
5. Reduce cable tension by turning the barrel adjuster back to its original position. The clearance between the pad and rim brake surface will be set at 1-1.5mm.

Fine tuning

6. Center the brake arms by turning the spring tension screw (align to seat stay).
7. Squeeze the brake lever or pinch the brake arms to touch the brake surface on the rim.
8. Slightly loosen the pad mounting bolt. The pad can be moved flush against the rim. Then fasten the pad mounting bolt slowly, avoiding that the pad turns when fastening.

   ⚠️ WARNING: Be careful when loosening the pad mounting bolt. If the pad bolt is loosened too much, it can cause the brake arm to suddenly return to its outward position and may damage the brake arm or rim. Hold the brake arm until the bolt is re-tightened.

9. Release the brake lever or the brake arm. Inspect there is no toe in or toe out. Redo step 7 and 8 if necessary.
10. Cut the excess cable. A length of 35 mm additional cable is sufficient.
11. Bend the cable and thread it into the cable eyelet on the left brake arm.

Note: The procedure for front and rear brakes adjustment is the same.