User manual WHITE BROTHERS CYCLING WBUD150

[. . . ] OWNERS MANUAL FOR WHITE BROTHERS UD-150 DOWNHILL WHITE BROTHERS CYCLING A DIVISION OF EKO SPORT, INC. GRAND JUNCTION, CO 81505 WWW. WHITEBROTHERSCYCLING. COM Owners Name: ___________________________________________________________________________ Address: _________________________________________________________________________________ _________________________________________________________________________________ Phone: ___________________________________________________________________________________ Purchase Date: ___________________________________________________________________________ Purchase Location: _______________________________________________________________________ Serial # __________________________________________________________________________________ (Located on the backside of the right axle clamp) SAFETY 1. ) NEVER REMOVE STEER TUBE FROM CROWN. THIS IS A PRESSED IN PART, REMOVING IT WILL RENDER BOTH CROWN AND STEERER INOPERABLE*. MAKE SURE YOUR FORK CAPS AND ALL FORK HARDWARE (brake studs, pinch bolts, etc. ) ARE TIGHT. [. . . ] For the majority of riders, this should give a compliant ride, yet remain resistant to bottoming. If you feel your forks are bottoming too easily, then switch to the heavier spring supplied with your forks. This means that with no load on the bike, the forks should come within 1/4" to 1/8" of returning to full extension after compressed. If forks are too stiff or too soft with either of the springs supplied, WB offers an optional Soft and X-Heavy Fork Spring (see Spring Rate Chart on page 12). Contact your WB dealer to order these. Tuning Your Cartridge Because of your forks coil spring, you will notice the forks have far better action than other mountain bike forks you might have used. Adjusting the cartridge should only be done after you are completely happy with your spring choice, and the proper sag has been set. Your White Brothers Pro Forx UD150 comes with the cartridge adjusted in the middle of its' range. Use the following guide lines to determine if further adjustment is needed. A) If your forks rebound too slowly, turn the adjustment knob on the top of the right fork leg all the way counter-clockwise (10 turns out is the maximum). The forks should absorb and return fast enough to absorb the next major obstacle. A sign that your forks are rebounding too slowly is if they feel like they pack-up or continue to compress as you go through rough sections. B) If your forks are rebounding too fast, turn the adjustment knob on the top of the right fork leg clockwise two clicks at a time. A sign of too fast of rebound is if the forks deflect and the bicycle is hard to hold in lines. NOTE: The damper adjuster also has some affect on compression damping. As you turn in (clockwise) the damper adjuster, both the compression and rebound damping will become slower. If a stiffer spring is installed, your standard setting should be two positions stiffer (clockwise). A light rider that has installed a softer spring will usually be most satisfied with the damping set at the lightest position (10 turns out). Trouble Shooting Problem: The fork has "striction" (moves up and down in jerky movements). NOTE: Measure height of brass adjuster protruding from the top of it to the face of the fork cap. (should be about 4. 7 mm) This dimension is crucial at reassembly to maintain the forks adjustment range. (see step 15 of reassembly) 4) Unthread top fork cap (counterclockwise) utilizing a WB spanner tool part no. 97-714. If fork stanchion is clamped in vise during this procedure use jaw pads to prevent damage to fork. Also avoid excessive clamping force to avoid crushing fork stanchion (figure 1). Figure 2a Figure 2 Figure 1 Cause: Solution: Problem: Cause: Solution: Problem: Cause: Solution: Problem: Cause: Solution: Problem: Cause: Solution: 5) Once top fork cap is loosened sufficiently that it is no longer attached to fork stanchion, grasp lower fork leg at axle seat and compress fork approximately 3". Loosen 14mm nut on cartridge shaft while holding top cap from rotating with the WB spanner tool (figure 2). [. . . ] Finally, fully extend fork and fully tighten fork cap into fork stanchion using the WB spanner tool. 14) Assembly (Right Fork Leg): Install bottom out bumper (tapered end facing down), nylon bottom out spacer and 9/16" hex nut positioned to bottom of threads. Before the cap is placed on, be sure brass adjuster is fully tightened into shaft of damper. Make(figure 15a) sure detent spring and ball bearing are positioned correctly in fork cap. [. . . ]