FORK REBOUND and MID-VALVE
GOLD VALVE INSTALLATION
FRGV 320802
Dirt 32mm

Welcome to the wonderful world of Gold Valving. To obtain your personal Custom Suspension Settings:

DVS Setup Sheet - If you haven't already, go to DVS Valving Search, insert your Access Code, and rider data and print your DVS Setup Sheet.

CAUTION:  IF YOU ARE UNFAMILIAR WITH REBUILDING AND REVALVING FORKS, STOP!!!  DO NOT PROCEED; SEEK OUT A QUALIFIED SUSPENSION TECHNICIAN.


NOTE:  All measurements are metric (for inches divide by 25.4). The valving list starts at the piston face and goes towards the Base Plate. Valve specs are listed by (QUANTITY) THICKNESS x DIAMETER. A number in parentheses means quantity. If there is no number in parenthesis the quantity is one. Example: (2).15x30 means quantity two, 15 hundredths of a millimeter thick by 30 millimeters in diameter.

The Left and Right Fork Leg are different. Keep all the components separate.

RT has a Spring Conversion Kit available for this fork that eliminates the Air Spring and replaces it with a Coil Spring. Call for details.

 Tools Required
 
- In-lb torque wrench that accurately measures 0 to 50 in-lbs (0.58 kgf-m) (SnapOn Digital Torque Wrench shown)
- Hi-Strength Loctite (included)
- Metric calipers and micrometer

VR1- Put the rebound rod in the shaft holding tool and remove the peening by filing it down to the nut face.
 
This step is not required on WP and Ohlins.

VR2- Remove the rebound valving nut.

VR3- Remove the rebound valving assembly.

VR4- Chamfer the rebound valving shaft lightly. Use a wire wheel on the shaft end to smooth it.

VR5- Blow air through one of the side holes while covering up the other side hole. This allows any fillings that may be in the shaft to be removed through the top hole. 
VALVING STACK TYPES - SINGLE OR TWO STAGE

VR6- You will either be building a Single Stage or a Two Stage Stack for both the Mid-Valve and the Rebound Stacks. The difference is the Crossover. The Crossover is a smaller diameter shim between the Lo-Speed and the Hi-Speed Stacks.

Please note that the DVS might call for a Single Stage Mid-Valve Stack and a Two Stage Rebound Stack (or the other way around).

Note: The DVS Custom Setup Sheet displays individual shims and does not label Hi-Speed, Crossover, and Lo-Speed. This is for your information only. Also you will not use all the shims provided in the Gold Valve Kit.

• Single Stage - made of:
           Lo-Speed Stack 
           Hi-Speed Stack

There is NO Crossover
(it becomes one stack.)

 

• Two Stage - made of:
            Lo-Speed Stack
            Crossover
            Hi-Speed Stack

The Crossover Gap is visible

 

VR7- MID-VALVE STACK
 
Install the stock:
Spring Washer (with holes) and the
Thrust Washer

The DVS calculates all the shims required in order. Install the Mid-Valve Stack onto the Valving Shaft starting with the:

Sleeve Washer
Check Spring

Mid-Valve Packing Stack
Hi-Speed Mid-Valve Stack
Mid-Valve Crossover (only if it is a two stage Mid-Valve stack)
Lo-Speed Mid-Valve Stack
and
Sleeve Extender Shim(s) (8 id x 11mm od shims) (if required)
 
Float is the amount the Mid-Valve stack moves before it has to bend. 
 
Once the complete assembly is built, check the Float with a feeler gauge (step VR14). This may be off due to production tolerances on all of the parts in the assembly. Adjust the MV Packing Stack to create the correct Float.
 
 

 

VR8- REBOUND BLEED HOLE
 
If the DVS does not call for a Rebound Bleed Hole skip this step.
 
If your DVS Setup Sheet calls for a Rebound Bleed Hole check to see if there is one already pre-drilled in the piston. If one is called for, and there is no pre-drilled bleed hole, you will need to drill one.
 
Notice that the bleed hole is on the opposite side of the piston with the Recess and is drilled sideways. It connects the two sides of the piston and bypasses the valving stack. The exact location is not critical.

VR9- Install the Rebound Gold Valve WITH THE RECESS IN THE GOLD VALVE FACING DOWN TOWARDS THE MID-VALVE.

VR10- REBOUND STACK
 
Install the DVS recommended Rebound Stack with the largest shim of the Lo-Speed Stack first against the piston face. Make sure the shims completely cover the ports.
 
If a two stage rebound stack is called for in the DVS, install the Rebound Crossover.
 
Install the Hi-Speed Rebound Stack in the order listed starting with the largest diameter shim and ending with the smallest diameter shim.

VR11- Two Stage Rebound Example
(Single Stage is exactly the same except there is no Crossover)
 
For Two Stage the total valving stack is made up of a:
Lo-Speed Stack
Crossover and a
Hi-Speed Stack
 
 (this is only an example - not your setting)
               
The Total Rebound Valving Stack starting from the Gold Valve piston face:
 
(4) .15x28 - Lo-Speed Stack
(1) .10x14 - Crossover (notice the smaller diameter)
(1) .10x26 - Hi-Speed Stack
(1) .10x22
(1) .10x20
(1) .10x18
(1) .10x16
(1) .10x14

 

VR12- Make sure the Total Valving Stack Height is correct. Critical!!
 
This step is here to insure you don't "run out of thread" onto the straight, non-threaded, portion of the shaft when tightening the Nut and the Nut gets full engagement.
 
The shims should be guided with the straight, non-threaded part of the shaft and should not be on the thread. The Rebound Base Plate should cover or "straddle" the end of the thread.
 
If needed, height adjustment is done with Spacing Shims added just below the Reboud Base Plate.
 
Spacing Shims must be larger in diameter than the smallest shim in the stack. Sometimes this is best accomplished by adding additional Base Plates.
 

VR13- Make sure there is Loctite on the Nut and tighten it to spec with a torque wrench.
 

CAUTION! The threads can be damaged without extreme care. You must use  Loctite. The 8mm bolt must be torqued with a torque wrench to 45 in-lbs (3.8 ft-lbs or 0.52 kgf-m), NO MORE! Do not take this step lightly. 

VR14- Make sure the mid-valve is free to move up and down.
 
CHECK THE FLOAT
 
The most critical valving setup in the entire front fork is the FLOAT. Use a feeler gauge to measure the actual "float" of the mid-valve. The float is the amount the stack moves before it has to bend.
 
Insert the feeler gauge between the Gold Valve Piston face and the first shim. Make sure the feeler gauge goes all the way in to the surface of the inner sleeve.
 
This is the best way to check the float as there are always production tolerances that will throw the predicted float off of the calculated number.
 
Adjust the packing stack to get the correct float. THIS IS CRITICAL!

VR15- Single Stage Rebound
and Single Stage Mid-Valve

VR15- Two Stage Rebound
and Two Stage Mid-Valve

Notice the gap in the valving stack where the Crossover is. The crossover gap should be clearly visible upon inspection.

 

VR16- Check your work. Hold the valve assembly up to the light and look for proper assembly. If there are any problems, disassemble the stack and look for burrs to surface and/or dirt in the valving. Reassemble and check again.

 

VR17- Make sure the shims that go next to the Gold Valve completely cover the ports on both sides of the piston! If the ports are not covered there will not be enough damping.
 
This could be caused by a number of reasons. Please call Tech Support if this occurs.

 

VR18- Continue with installation of the Compression Gold Valve and fork assembly.