EKO White Brothers Cycling TM 1.0 User manual

O W N E R S M A N U A L F O R
580 N. Westgate Dr.
Grand Junction, CO 81505 USA
1.800.999.8277
www.whitebrotherscycling.com
A division of
Page 1

TABLE OF CONTENTS
APPLICATIONS..........................................PAGE 3
FORK INSTALLATION..............................PAGE 3
TUNING.......................................................PAGE 4
MAINTENANCE........................................PAGE 5
EXPLODED VIEWS...................................PAGE 6
WARRANTY...............................................PAGE 7
SAFETY
INTRODUCTION
1. NEVER REMOVE STEERER TUBE FROM CROWN. THIS IS APRESSED IN PART. REMOVING IT WILL
RENDER BOTH THE CROWN AND STEERER INOPERABLE.* MAKE SURE THE FORK CAPS AND ALL FORK
HARDWARE (brake studs, pinch bolts, etc.) ARE TIGHT.
2. DO NOT PERFORM ANY MODIFICATIONS OR ADJUSTMENTS THAT ARE NOT OUTLINED IN THIS
MANUAL. SEE THE TUNING SECTION FOR MORE DETAILS.
3. INSPECT YOUR FORK BEFORE EVERY RIDE. INSPECT THE CROWN, TUBES,AND AXLE SEAT AREAS FOR
ANY SIGNS OF FATIGUE, BENDING, CRACKING OR OTHER DAMAGE. IF YOU NOTICE ANY TYPE OF
DAMAGE, DO NOT RIDE IT. RETURN IT TO YOUR DEALER OR TO WHITE BROTHERS FOR A COMPLETE
INSPECTION AND NECESSARY REPAIR OR WARRANTY STEPS. PLEASE REFER TO THE WARRANTY
SECTION OF THIS MANUAL.
4. PERFORM ALL RECOMMENDED MAINTENANCEACCORDING TO THE MAINTENANCE SECTION OF THIS
MANUAL. FAILURE TO PERFORM MAINTENANCE COULD DRASTICALLY REDUCE THE FORK’S LIFE,
PERFORMANCE AND CAUSE YOUR FORK TO BE A SAFETY HAZARD.
5. WHITE BROTHERS RECOMMENDS THAT YOU WEAR PROPER SAFETY EQUIPMENT EVERY TIME YOU
RIDE, INCLUDING A APPROVED BICYCLE HELMET. NEVER RIDE AT NIGHT WITHOUT LIGHTS.
6. ALWAYS USE GENUINE WHITE BROTHERS PARTS. USE OF AFTERMARKET REPLACEMENT PARTS AND
UPGRADES VOIDS THE WARRANTY AND COULD CAUSE STRUCTURAL FAILURE.
*IF SERVICE BECOMES NECESSARY OR REMOVAL OCCURS, PLEASE CALL WHITE BROTHERS CUSTOMER SERVICE FOR PRODUCT
EVALUATION AND DIAGNOSIS.
WARNING: RIDING A BIKE IS DANGEROUS. NOT PROPERLY MAINTAINING OR INSPECTING YOUR BIKE AND
IT’S COMPONENTS IS EVEN MORE DANGEROUS. IT IS ALSO DANGEROUS TO NOT READ AND FOLLOW
THESE INSTRUCTIONS.
Thanks for purchasing your new White Brothers fork. Our forks are designed so you can perform at your absolute peak.
Your new White Brothers fork has oil damping and is coil and air sprung for light weight performance. The coil /air spring
and damper is set stock to satisfy a wide range of rider weights and riding styles. Fine tuning can be easily accomplished by
changing air pressure. See the adjustment and maintenance section. For very heavy or very light riders the external damper
can be adjusted to give a wide range of compression and rebound damping. Steering accuracy is improved over conventional
MTB forks by utilizing superior materials and design. These include oversized 32mm fork tubes, a torsion box design steering
crown, a one piece billet brake arch and extra thick drop-outs. The WB forks bootless design allows a considerable amount
more slider/stanchion overlap than competitor forks which contributes to fork steering accuracy. Fork travel has been chosen
to offer the best performance possible for each fork’s intended use. Every effort has been made to make the White Brothers
forks very light and perform at a level superior to other forks on the market. To insure peak performance, proper installation
and periodic maintenance is required. White Brothers forks are designed for off road use only. They are not equipped with
reflectors for on road use. If you are going to use your fork on road, have a dealer or mechanic install reflectors that meet the
Consumer Product Safety Commission’s requirements. When riding on public land, please respect the rights of others and stay
on established paths and trails. By riding responsibly, you are helping ensure the future of our sport.
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Figure #1
Headset Race
Star Fangled Nut
Steerer Tube
Figure #3
Figure #2
Steering Stem
Upper Triple Clamp
Optional Headset Spacer
Headset Upper Race
Frame with
Headset Cups
Lower Triple Clamp
Stanchion Tube
1. Remove your old fork from the bicycle. Measure the diameter and length of your old fork’s steer tube to insure that
the White Brothers steer tube is the correct diameter and sufficient length for the installation.
2. Remove the crown race from your old fork.
3. Press the crown race onto your new White Brothers fork.(see Figure #1)
4. Preassemble the headset by sliding the fork steerer tube through the bearings. Then install the head sets upper race,
upper triple clamp, headset spacer (optional), and stem onto the fork steerer tube. Adjust with optional spacers to
your preferred height. (See Figure #2) Refer to the head set owners manual if there is any questions about the
preassemble.
5. Mark the steerer tube at the top of the stem. The steerer tube will now need to be cut to the correct length.
Disassemble and cut 3mm (1/8”) below the mark. Consult your dealer or mechanic if you don’t have the proper
tools to cut the steerer tube.
6. The star fangled nut must now be installed into the steerer tube. If you don’t have the set tool we recommend
dealer installation of this part. (See Figure #3)
7. Clean and grease all headset bearings and races to prepare them for assembly. Note: Replace the bearings if there is
any sign of wear or corrosion.
8. Now loosely assemble the headset, stem and handle bars as done in step four. (See Figure #2)
9. Install the headset top cap into the star fangled nut. Tighten until there is no play in the steering. The fork should
rotate freely in the head tube. Straighten the stem in relation to the front tire and tighten the pinch bolts on the stem
Tighten the pinch bolts on the upper clamp and double check the lower clamp bolts are tight. These can easily be
over tightened. We recommend tightening to 5 foot pounds. If there are any questions consult your dealer or
mechanic.
FORK INSTALLATION
White Brothers forks feature a 1-1/8” threadless steerer tube. If you have a threaded type fork on your bicycle, consult
your dealer for the appropriate upgrade parts necessary to convert to a 1-1/8” threadless steerer tube. Check with your
frame manufacturer to insure your bike is designed for a triple clamp fork. If not, you may void your warranty.
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TUNING
To get the most out of your White Brothers fork, it is important that
you tune the fork to fit your riding style and the terrain you ride in.
INITIAL BREAK-IN PERIOD:
Your new fork is designed to break-in over a period of 10 hours or more of riding.As all
the parts bed into each other, the stiction (friction) of the fork decreases and the
sensitivity increases. After the initial brake-in period , fine tuning the air pressure and
damping adjustments may be beneficial to achieve the best possible performance for your
weight and riding style.
TOOLS NEEDED:
High pressure air pump (WB 97-725)
Air Tight adaptor (WB 97-726)
15/16” socket with ratchet.
4mm Allen Wrench
5mm Allen wrench
6mm Allen wrench
10. Install your front brake and adjust according to the manufactures instructions.
11. Install and tighten the wheel in the front fork. Ensure that there is sufficient thread engagement (5 or more threads with the quick
release in the lock position) due to the thicker White Brothers drop-outs or on the 20 mm thru axle, the pinch bolts and axle nut are
tight. Install the front wheel per manufactures specifications.
12. Check to see that the brakes are adjusted and properly working. Make sure the brake cable doesn’t interfere with any part of the
bike when the fork is compressed and released.
Warning:When installing the wheel or a new tire, check for minimum clearance. Measure from the highest point on the tire to
the under side of the crown. There must be 1/8” or 3mm more clearance than the forks travel to ensure adequate clearance in all
riding conditions. Any less clearance can cause the tire to hit the crown resulting in serious injury or death.
Your new White Brothers fork is designed with a coil spring combined with a air spring and oil cartridge damping. The
following guidelines for adjusting and maintaining your fork will enable you to enjoy maximum performance and
longevity from your fork.
1. First test ride the fork over easy terrain. If after riding the fork over varied terrain you decide that more tuning is
necessary, continue to the next step.
2. The compression or spring of the fork can be changed three ways; by changing the air pressure, adjusting the settings of
the damper cartridge and changing the spring for a different rate.
3. To change the air pressure, remove the snap in dust cap (use a finger nail or small screw driver) so that the schrader valve
stem is exposed.(see Figure #4)
4. A high pressure shock pump is the best way to inflate cartridges. WB recommends you purchase the High Pressure Air
Pump # 97-725. Test ride after each adjustment until the air cartridge is at an adequate pressure. Reinstall the dust cap.
5. Compression adjustment is done with the knob on the top of the right leg and is a lockout when turned full clockwise.
Turning the knob counter-clockwise from lockout will provide less and less compression damping. Less compression
damping will increase the fork dive but will feel smoother over small bumps. More compression damping will feel harsh
over small bumps but will be more resistant to bottoming. Full lockout to full open compression damping happens in ¾
of a turn.
6. If after adjusting as outlined in steps 3-5 you feel the fork is too soft or too firm, you may need to change the spring out
for a proper spring rate. (See Exploded view) Contact White Brothers for a replacement spring. Important: Deflate the
air from the left leg before disassembly. Pop off the dust cap and release the air from the leg. Remove the top cap using a
15/16” socket to expose the spring assembly. Pull the spring assembly out and replace the main spring with the correct
spring rate. (Reference exploded view for part #)
7. Rebound adjustment is done with the knob on the bottom of the right leg. Turn the knob clockwise for slower rebound.
To speed up rebound, turn the knob counter-clockwise. Start with a middle setting and fine tune the rebound from there.
Proper rebound will allow the tire to track the ground over consecutive bumps. Too slow of rebound will pack-up (feel
harsh over consecutive bumps) while rebound set too fast will cause the fork to top out harshly . Adjustment range is 6
turns.
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Figure #4

MAINTENANCE
Your White Brothers fork requires periodic maintenance to ensure peak performance and long life. Moisture and contamination
may build up inside the fork. We suggest you disassemble your forks, inspect, clean and re-grease after 30 hours of use. If the
forks appear to be relatively clean, you can go 40 hours between servicing. If the forks appear dirty, you should service them
every 20 hours. The three things that will most affect the service interval and performance of your forks is water, mud and dust.
How much time you use your forks in those conditions will determine how much service they require.
NOTE: It is recommended that, when cleaning the fork, water spray should not be direct the at the seals.
NOTE: Neglecting proper fork maintenance will reduce the fork’s life. Internal build up of water and dirt, or a lack of
lubrication will cause excessive wear and void the warranty.
Basic service should include removing the lower fork legs cleaning and re-greasing all shafts and seals. At this time, the fork
should be carefully inspected for wear and damage before reassembly.
*White Brothers recommends that you consult with a qualified technician before performing the following:
BASIC FORK DISASSEMBLY
1. Disconnect front brake and remove wheel as outlined in your bicycle owners manual.
2.The cartridge damper locks out when the upper damper shaft is screwed down against a brass seat. This provides a very
durable and positive lockout that retains it’s seal over long periods of use, however if the upper damper shaft is unscrewed
several turns and detaches from the damper piston, the damper must be torn down and rebuilt. Warning: To prevent the upper
damper shaft from unscrewing when the fork lowers are removed for lubrication or other maintenance, do not attempt to
unscrew the compression screw at the bottom of the right leg without first locking the fork out then removing the lockout
knob and the cap and the hex key from the crown on the damper side. After these parts are taken out, the compression screws
can be loosened and the lowers detached from the fork stanchions. Remove allen head bolts at the bottom of the fork using a
6mm allen wrench (figure #5) on either the QR or 20mm thru axle. A light tap may be need to free the control rod from the
lower assembly.
3. Simply slide the lower fork legs off the end of the inner stanchion tubes. Be careful not to damage the seals as they come off
the inner legs.
4. At this point clean all parts with a clean, non-abrasive rag. A mild grease cutting cleaner or solvent might make this an easier
task. Once clean, inspect seals for tears or cracks. If in good condition re-grease them with White Brothers Suspension Lube.
If your seals are no longer serviceable, check the exploded parts table section of this manual for the proper replacement part
numbers. Also, check carefully the DU bushes for wear. This is done by looking at the color of the bushes. If the bushes are
dark grey, they are in good condition. If they are bronze/gold in areas, they are worn and can cause fork stanchion damage.
Your dealer will be able to order any replacement parts you might need. The DU bushes require special tools to remove and
reinstall. If DU bushing replacement is necessary, send your complete fork to White Brothers or take it to a dealer that is
experienced in this type of service on a White Brothers fork.
5. The damper cartridge is threaded into the right fork stanchion. Do not remove. Inspect it for visible leakage. If none, grasp
the shaft while in the stanchion tube and operate back and forth to insure smooth action. If the cartridge has visible leakage
and/or the damping feels inconsistent as it is stroked, return the cartridge to White Brothers or a dealer familiar with
rebuilding the cartridge damper for service.
Figure #5
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6. Next, inspect the fork stanchion tubes for wear, nicks or scrapes. If there is noticeable play
between lower fork legs and fork stanchions, the DU bushes located inside the lower fork legs
may require replacement. Consult your dealer for service options.
7. If everything is free of problems, coat all parts with a light coating of White Brothers/Englund
Suspension Lube or other suitable, non-lithium grease. Also lube the DU bushings that are
located inside lower fork legs by dipping a socket extension in grease and apply to the inside
of the fork stanchion on the DU bushings.

TROUBLE SHOOTING
Fork Feel Sticky
This is usually caused by:
1. A lack of lubrication. Clean and lubricate the fork as outlined in the maintenance section.
2. Contamination inside the fork. Clean and lubricate the fork as outlined in the maintenance section.
3. Fork is not sufficiently broken in. Contact White Brothers for further technical information.
The Fork Bottoms too Easy
1. Incorrect air pressure. Add air pressure as outlined in #3 and #4 of the tuning section.
2. Insufficient compression damping. Add compression damping by turning the adjuster on the top of the right leg clock-wise.
3. Too light of spring rate. Change the spring out for a heavier rate as outlined in #6 of the tuning section.
The Fork Doesn’t use Full Travel
1. Incorrect air pressure. Remove air pressure as outlined in #3 of the tuning section.
2. Excessive compression damping. Reduce the compression damping by turning the adjuster on the top of the right leg counter
clock-wise.
3. Too stiff of spring rate. Change the spring out for a lighter rate as outlined in #6 of the tuning section.
Lockout and/or Damping Adjustments Don’t Do Anything
1. Damper may need servicing.
2. Contact White Brothers for technical information.
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BASIC FORK ASSEMBLY
8. Make sure all the spacers and bottoming bumpers are installed on the control rods (see exploded views for proper installation)
To re-attach the fork lowers, first push the lower damper shaft upward so that the hex key on the cap can be inserted into the
top damper shaft. Screw down the cap and re-attach the lockout knob by carefully fitting it on the top hex fitting of the key in
the cap and replacing the small screw in the center of the knob. Move the knob to the “7 o’clock” or “locked out “ position
and HOLD IT THERE. Pull the lower damper shaft downward as far as it will go and turn it clockwise, still holding the knob
in the ”locked out” position, until the shaft will not turn. The lock out is now engaged. Make sure the damper cartridge is tight
in the stanchion tube. Make sure all the spacers and bottoming bumpers are installed on the control rods (see exploded views
for proper installation). With all parts cleaned and reinstalled with new grease, fit the lower assembly over the stanchion tubes
and gently rock and slide together until the control rods are touching the bottom of the lower assembly. Note: Do not tap the
lower assembly onto the stanchion tubes. The DU bushings can be dislodged. Thread the compression screws into the
control rods starting with the damper side and once again hold the lock out knob in the locked out position and firmly tighten.
Downward pressure on the fork will help hold the control rods from rotating until the compression screws become tight.
Note: Ensure the compression screws are fully tight before riding.
9. Make sure the fork caps are fully tightened into the top of the stanchion tubes. Connect the front brake and wheel as outlined
in you bicycle owners manual.
10. Compress the fork to make sure it works smoothly and the brake cable does not interfere with the operation of the fork.

Dual Crown 100mm
Coil and Air Fork W/
Oil Damper
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ITEM NO.QTY. PART NO. DESCRIPTION
1 1 100197-2020mm Lower Assm
2 1 100285 20mm Axle
3 1 100531 20mm Axle Nut
4 2 97-852 6mm Screw
3
1
4
4
2
Optional 20MM Dropouts
c QTY. PART NO. DESCRIPTION
1 1 100197 Lower Assembly
2 1 100258 Tandem Upper Assembly
3 2 P3290 Bottom Out Bumper, Soft
4 1 100219 Damper Assembly VT, BW 1.0, TM
5 1 100580 Negative Spring Guide
6 2 F-2402 O-Ring 313
7 1 100235 Stanchion Plug
8 1 100060 Air Cap Triple Clamp Series
9 1 100054 Schrader Valve Assembly
10 1 100259 Control Rod Assembly
11 2100243 Bottom Out Spacer
12 1 97-860 Negative Spring
13 1 P3000 Piston Band
14 1 100262 O-Ring 211
15 1 100581 Spring Spacer
16 1 P3300 Spring Guide Double
17 1 97-3517 Spring
18 1 P3028 O-Ring -021
19 1 P4650 Air Valve Dust Cap
20 2 100055 Washer .3125x.4375
21 1 100063 Compression Screw
22 1 100063S Compression Screw Solid
23 1 100200 Damper Adjuster
24 2 97-3668 Brake Stud
25 4 97-986 DU Bushing
26 1 P1152-1 Upper Crown
27 7 97-9200 M5x16mm Screw
28 1 97-9300 Star Nut
29 2 97-1351 Wiper Seal
30 1 100095 Top Cap
31 1 100263 Lockout Hex Key TM 1.0
32 1 100033 O-Ring 010
33 1 100175 Knob Lockout 03
34 1 100195 Flat Head Hex Screw M2.5x.45
35 1 100201 Lockout Hex Adapter
36 2 P1147 Inner Leg
37 1 100505 Lockout Stop
38 1 P3310-1 Washer, Nylon
39 1 100506 Wave Washer
30
32
34
19
8
15
16
17
14
13
10
36
36
2
4
5
12
6
7
11
3
11
3
24
25
25
29
22
20
23
27
27
27
28 18
33
35
31
9
6
26
37
38
39
1

Owners Name:___________________________________________________________________________
Address:________________________________________________________________________________
_______________________________________________________________________________________
Phone:_________________________________________________________________________________
Purchase Date:___________________________________________________________________________
Purchase Location:________________________________________________________________________
Serial #: Located on lower back side of right axle clamp.__________________________________________
MAINTENANCE LOG
Date Service Performed Date Service Performed .
580 N. Westgate Dr.
Grand Junction, CO 81505 USA
1.800.999.8277
Www.whitebrotherscycling.com
A division of
*Consumers outside the USA please contact the dealer or distributor in your area.
White Brothers forks are designed to enhance riding pleasure and as such are warranted to be free from defects in materials and
workmanship for a period of six months from the date of purchase. On receipt if it is found to be defective, White Brothers will
determine replacement or repair of the fork. This warranty is the sole and exclusive remedy. White Brothers shall not be liable for
any indirect, special or consequential damages. Warranty does not apply to any product that has been installed improperly or
adjusted using methods not outlined in this manual. Warranty also does not cover forks that have been misused, or forks that have
altered/missing serial numbers (located on the back of the right fork stanchion). The fork is not warrantied against damage in the
appearance of the fork or for modifications not outlined in this manual. This warranty does not cover breakage, bending, or
damage that may result from crashes, falls or abuse. Normal wear (i.e. seals, bushings, sliders finish, etc) and wear and damage
caused by lack of proper maintenance is not included. *The warranty registration card must be filled out and returned within
30 days of purchase to activate and validate this warranty. A copy of the proof of purchase must be included with all
warranties. Customers in the USA please contact your dealer for a Return Authorization Number (RA#) before returning the fork.
All forks returned for inspection must be sent freight paid to:
WARRANTY CLAIMS
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