18
Universal Disc Brake Rotor Adaptors
Brake rotor adaptors are used on Universal Disc front and rear hubs to accommodate
ISO and other disc brake systems. These various adaptors are offered in different
widths to correctly position disc brake rotors. Be sure to use the adaptor designed
for your brake system. Do not attempt to modify your adaptor to work with rotors
other than those for which they were designed. Mount the brake rotor according to
manufacturer ’s instructions. Rotor mounting bolts should thread 8mm into the rotor
adaptor and must not extend through the brake rotor adaptor or contact the hub.
Helper
Hole
2.5mm
Hex Bolt
Figure 12
Rear One Piece
Axle Assembly
Driveshell
Assembly
Universal Disc
Rear Hubshell
Assembly
Rotor
Adaptor
3mm
Hex Bolts
Adjusting
Clamp
Installation of rotor adaptor
(see Figure 12)
Before installation, thoroughly clean both the brake rotor adaptor and the splines on
the hub shell. Any debris on the splines may not allow the rotor to run true, inhibiting
the performance of the brake.
1. Apply a light amount of grease to rotor adaptor bolts. Do not use Loc-Tite™ or
other sleeving compound to secure rotor adaptor.
2. Place the adaptor onto the splines. When snug, the adaptor should leave an even
gap approximately the width of a piece of paper between the hub and the adaptor.
3. Insert the three bolts provided. In an alternating pattern, hand tighten adaptor
bolts to pull adaptor down evenly.
4. Using a 3mm hex wrench, finish torque to 28 inch pounds. Do not over tighten.
Removal of rotor adaptor
(see Figure 12)
1. Remove the disc brake rotor if it covers the three mounting bolts.
2. Remove the three adaptor mounting bolts using a 3mm hex wrench.
3. To remove the rotor adaptor from the tapered splines, pry between the adaptor
and the hub using two opposing plastic tire levers (it should pop off easily). Do
not use metal objects, such as screw drivers, to release the adaptor.
