Sturmey-Archer AB User manual

Instructions for 3-speed Internal Gear
Hubs
3810.0405.007 © Sun Race Sturmey-Archer Inc.
1. GENERAL INFORMATION
1.1 Scope of this leaflet
Congratulations on your purchase of a Sturmey-Archer internal gear hub. For
the best performance, please follow instructions in this leaflet. Please contact
your dealer if any problems are experienced with these products.
△,!Riding a gear hub out of correct adjustment may cause damage to the
internal parts and possible malfunction！
This leaflet refers to the following 3-speed gear hubs:
◎Gear Hubs with Drum Brake：AB、SAB、XRD3
◎Gear Hubs：AW、SRF3
◎Gear Hubs with Coaster Brake：AWC、SRC3
◎Gear Hubs for Band Brake：AWB、SRB3
1.2 Lubrication
No routine lubrication is required. During a major service, the hub greases
should be replenished or replaced, especially for internal transmission parts.
Please contact your Sturmey-Archer dealer who is equipped to carry this out.
△,!Under no circumstances should any lubricant be applied to the brake
drum and drum brake shoes, as this may prevent the brake from
functioning!
1.3 Gear Changing
Continue pedaling but ease pressure on the pedals and select the gear required.
If the bicycle is stationary simply select gear required.
1.4 Gear Ratio
1st Gear
0.75
2nd Gear
1.0
3rd Gear
1.33
1.5 Brake Operation
1.5.1 AB、SAB、XRD3
To activate the brake, pull the appropriate brake lever on the handlebar. If the
wheel does not run free, or cannot be locked by a full application of the brake,
then adjustment is necessary.( See section 4.)
1.5.2 AWC、SRC3
The coaster brake is activated by back-pedaling. To apply maximum braking
effort, begin brake application when the pedals are horizontal. When
descending down a long steep slope it is advisable to apply front and rear
brakes alternately to prevent the coaster brake from overheating.
2. INSTALLATION
2.1 AB3、SAB3、XRD3
1. Build hub into wheel .
2. Fit the dust-cup (2)、spacer (3)、sprocket (4)、circlip (5) onto the driver. For
hubs already pre-fitted with a plastic dust-cap with built-in spacer, simply fit
sprocket (4) and circlip (5) onto the hub driver.
3. Put the hub axle into the rear fork ends and place the chain around the
sprocket (4).
4. Fit the lock-washer (6)、dome nut (12) or hex nut (8) or flange nut (13) on the
right side of the axle.(Sprocket side is right hand side.) Screw the nuts finger
tight.
5. Fit brake arm into brake arm clip (14) with nut (14A) and bolt (14B).Fit
lockwasher and axle nut to left hand side Do not fully tighten at this point.
6. Locate the lock-washers (6)、fulcrum lever (7)/(15) and guide nut (16) or hex
nut (8) and guide pulley set (9), Do not tighten nuts at this point. Align the
wheel, tension the chain and ensure the fulcrum lever (7)/(15) is parallel with
the chainstay.
indicator cover (21)/(22) on if required, but do not snap on at this point.
9. Ensure components are fitted to the right side of axle. Unscrew the indicator
by up to half a turn if necessary to ensure easy fitment over the guide unit.
Connect the indicator (10) to the cable connector (19).
2.2 AW、SRF3、AWB、SRB3
See section 2.1. Step 5 does not apply.
2.3 AWC、SRC3
See section 2.1. Step 5 is shown as diagram.
3. GEAR ADJUSTMENT
1. Remove the indicator cover (21)/(22) for
easier gear adjustment.
2. Make sure that no more than 2.5mm of
axle protrudes from the axle hex nut.
3. Select 2nd gear and turn the pedal crank
forward to ensure the gear is engaged.
Turn the cable adjuster (20) or cable
connector (19) until the end of the
indicator rod is level with the end of the
axle, as show in diagram.
4. Tighten the cable-adjusting locknut
(20-A) and indicator locknut (10-A) to lock in adjustment.
5. Select 3rd gear position, rotate the pedal crank, change back to 2nd gear and
check adjustment. Retry the stages described above when the gear changing is
incorrect.
6. If there is an indicator cover (21)/(22), fit it firmly onto the guide nut (16) or
the guide pulley set (9).
4. BRAKE ADJUSTMENT
4.1 AB、SAB、XRD3
1. Fit the brake cable adjuster bolt (23) into brake arm. Rotate the brake lever
and then put the brake cable nipple (24) into the brake lever.
2. Slacken the brake adjuster locknut (25).
3. Turn the adjuster (26) counterclockwise until the brake is applied.
4. Rotate the adjuster (26) clockwise (about four revolutions) until the wheel just
spins freely.
5. Tighten the locknut (25).
123
△,!The brake adjustment must be checked or replaced if necessary before
first using the bicycle, and after removing or replacing the wheel.
Notice: During the first few miles brake linings “bed-in”and may require
re-adjustment. Should braking efficiency become impaired beyond
adjustment, brake shoes or linings may need replacement. Contact your
Sturmey-Archer dealer who is equipped to replace these.
4.2 AW、SRF3、AWB、SRB3
Please check with brake manufacture’s manual.
4.3 AWC、SRC3

Instructions for 3-speed Internal Gear
Hubs
3810.0405.007 © Sun Race Sturmey-Archer Inc.
7. Tighten the nuts on both side of the hub axle to 28Nm and tighten the nuts on
brake arm clip (14) to 7Nm.
8. Place the indicator (10) into the axle and screw it finger tight. Put the
There is no required to adjust brake for such gear hubs.

Instructions for 3-speed Internal Gear
Hubs
3810.0405.007 © Sun Race Sturmey-Archer Inc.