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 Fork Rebuild

2014- Suzuki DL1000 V-Strom 
2013-16 Triumph Street Triple R, etc.
(with links to FMGV S252502C Compression
and Rebound Gold Valve Instructions)

Before disassembly:

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 - This fork REQUIRES a TFCH 01 Cartridge Holding Tool!

Featured, and special thanks to Master Suspension Technician and used-to-be-wanna-be-fireman-but-now-is-actually-a-fireman Alan "AJ" Peck.

Click on images to enlarge.

Shortcuts:

 > FORK DISASSEMBLY
 > CARTRIDGE DISASSEMBLY
 > COMPRESSION VALVING
 > REBOUND VALVING
 > CARTRIDGE ASSEMBLY
 > FORK ASSEMBLY

Supplies 
USF-05 Fork Oil - extremely slippery
Contact Cleaner - or other good, clean solvent
Fork Springs (likely - check the Product Search for rate recommendations)
Loctite - Hi Strength (included in the Gold Valve Kit)

Special Tools 
TFCH 01 Cartridge Holding Tool - required
TFSC 01 Portable Fork Spring Compressor - very handy
   or
TFSC 02 Foot Operated Fork Spring Compressor
TMVJ 065 Vise Jaws mounted on a Vise - suggested
TFBT 10100 Bleeding Tool (optional) - suggested
TFSD 41 or 43 Seal Driver (required if changing seals or bushings)
Wood Chisel (or sharp chisel)
TPSH 10 Shaft Holding Tool (included in Gold Valve Kit)
TFOL 02 Oil Level Tool - suggested

FORK DISASSEMBLY
FD1- Place the fork firmly in a vice with TMVJ 065 Vise Jaws. Clamp the outer fork tube at the lower triple clamp location. Back out the rebound adjuster all the way.

FD2- Back out the compression adjuster all the way.

FD3- Check the position of the preload adjuster and note the height for future reference.

FD4- Back out the preload adjuster all the way.

FD5- Remove the fork cap using a Fork Cap Wrench or appropriate socket.

FD6- Drain the fork oil and dispose of properly.

FD7- Wall Mounted Spring Compressor Option 1: Place the fork in a RT Fork Spring Compressor (TFSC 02) with the tool's top pins in the holes in the spring spacer and the locating pin in the bottom of the fork.

FD8- Compress the fork spring.
This pic is a little awkward. Normally you will stand in front of the tool and put your foot at right angle to the lever.

FD9- Portable Fork Spring Compressor Option 2: Clamp the Fork Spring Compressor in a vise and place the fork in RT Fork Spring Compressor (TFSC 01). Put the tool's top pins in the holes in the spring spacer and the locating pin in the bottom of the fork.

FD10- Using a wrench or socket (not an impact), tighten it down to compress the fork spring.

FD11- This will expose the Jam Nut on the Damping Rod. Loosen the fork cap from the damping rod.
You may have to lift up on the Fork Cap to separate it from the spacer.

FD12- Remove the fork cap.

FD13- Remove the rebound adjusting rod in the center of the damping rod.

FD14- Remove the spring and the preload spacer.

FD15- Remove the bottom spring washer. Some oil will drain from the fork.

FD16- This fork design is a little different than most. The Cartridge is not bolted into the bottom. It threads into a Retaining Collar in the Inner Fork Tube.

This Cartridge Holding Tool (TFCH 01) is required on this model.
Insert the TFCH 01 Cartridge Holding Tool into the fork and make sure it registers into the slots properly.
The Fork Bottom should be firmly clamped in the soft jaws of the vise.

FD17- Unscrew the cartridge all the way.
Note - I prefer to do this with the fork held vertically but I think A.J. wanted to make sure he had a full frontal shot of his face.

FD18- Remove the cartridge from the fork.
Notice the thread on the Seal Head near the top of the Cartridge. This threads into the Retaining Collar holds the cartridge into the fork.

The Cartridge Retaining Collar.
If for some reason you remove it, it gets re-installed in this direction.

Installed, only the pins showing.

FD19- Cartridge Retaining Collar
Note - This Retaining Collar DOES NOT have to be removed from the Inner Fork Tube for Gold Valve Instalation. It is only here for your viewing enjoyment.
This particular fork design has an interesting retention system for the cartridge. There are no bottom cartridge bolts. The Seal Head and Compression Base Valve Assembly are press fit into the Cartridge Tube, not threaded in.
The Cartridge Seal Head threads into a Retaining Collar that is held into the Inner Fork Tube with pins.
The lower pic shows the Inner Fork Tube with the Retaining Collar in place. All you can see is the pins.

FD20- Remove the jam nut from the damping rod.

Stock Seal Head Assembly press-fit into the top of the Cartridge Tube.

CARTRIDGE DISASSEMBLY
CD1- The Seal Head (on the top of the cartridge) and the Compression Base Valve Assembly (on the bottom) are press-fit into the Cartridge Tube. They can be removed by tapping them out with a sharp chisel.
Click here if you are interested in instructions on how to Remove the Bottom-out Piston (Not Required for Gold Valve Installation)

CD2- Clamp the Cartridge Assembly lengthwise gently in a soft jaw vise. Do not squeeze it too tightly as to deform the tube. Use a sharp chisel (a wood chisel works great) and tap off the Seal Head Assembly evenly.

CD3- The Seal Head along with the Rebound Valve Assembly can be slid out of the Cartridge Tube.

Stock Compression Base Valve Assembly press-fit into the bottom of the Cartridge Tube.

CD4- The Compression Assembly is also press-fit into the bottom of the cartridge.

CD5- Remove the spacer. The spacer is press-fit onto an o-ring.
The entire Compression Base Valve Assembly can be removed by tapping it out with a sharp chisel just as with the Seal Head.

COMPRESSION VALVING
 VC1- Left to right; the stock Compression Base Valve Assembly, stock Rebound Assembly, Compression and Rebound Gold Valve Assemblies.
The Gold Valve Assemblies come pre-valved with a standard setting which may not be the best setting for you.
►Check your DVS Setup Sheet to see if the pre-installed COMPRESSION valving is already correct for you. If it is not, click here for instructrions on how to modify yourCOMPRESSION setting.

REBOUND VALVING
VR1-
►Check your DVS Setup Sheet to see if the pre-installed REBOUND valving is already correct for you. If it is not, click here for instructions on how to modify yourREBOUND setting.
Once the rebound valving is correct continue by installing the Gold Valve Rebound Assembly.

 

VR2- Very firmly clamp the damping rod below the Bottom-Out Piston in the Shaft Holding Tool provided.
Notes - Clamping tightly is good as the shaft is strong and there will only be damage if the rod spins in the tool.
Clamping below the Bottom-out Piston means that even if the shaft spins and creates surface damage it will not be in an area that matters.

 

VR3- Unscrew the Rebound Valve Assembly from the end of the rod.

 

VR4- This will expose the stock Rebound Needle and Spring. They will be reused. Clean everything and lube the o-ring.

VR5- Clean oil off the thread and apply Loctite to the rod. A small pack of Loctite is provided in the Gold Valve Kit.
Make sure the stock Rebound Needle and Spring are in place before you install the new assembly.

VR6- Install the new Rebound Gold Valve Assembly.
Remember it is pre-valved from Race Tech and may need to be modified specifically for you.

VR7- Double check that the Rebound Check Valve opens freely.

CARTRIDGE ASSEMBLY
CA1- Reinstall the Compression Base Valve Assembly into the Cartridge Tube.

CA2- Tap it in firmly with a plastic mallet until it seats. Make sure the compression valve is seated fully against the cartridge tube (no gap).

CA3- Reassemble the Seal Head, Damping Rod, and Rebound Valve Assembly.
Install the top-out spring onto the Damping Rod.

CA4- Install the stock plastic spacer and the Seal Head.

CA5- Insert the Rebound Rod/Seal Head into the cartridge tube.

 

CA6- Place the bottom end of the cartridge on a rag on the floor. Use the Cartridge Holding Tool as a driver and gently tap until the Seal Head is fully seated on the Cartridge Tube.

FORK ASSEMBLY
FA1- Screw the jam nut onto the top end of the rod all the way util it runs out of thread.

FA2- These pics show how the lower Spring Seat is installed. It rests on the seal head loosely with the cup facing downwards.

FA3- Insert the catrtidge assembly into the tube.

FA4- Insert the Cartridge Holding Tool. Make sure it locates into the notches in the top of the seal head.

FA5- Tighten firmly.

FA6- Insert the lower Spring Seat cupped side down.

FA7- Visually inspect for the proper location of the Spring Seat.

FA8- Screw the Bleeding Tool onto the end of the Damping Rod.

FA9- Use USF-05 Fork Oil and fill to about 50mm (2") from the top with the Outer Fork Tube completely collapsed.
(Notice the proper display of the Ultra Slick USF-05 bottle - good job A.J.!)

FA10- Stroke the Damping Rod until there are no air bubbles and...

FA11- it slides smoothly. This indicates that the cartridge is fully bled. You may need to add more oil during this bleeding process.

FA12- On the Oil Level Tool TFOL 02, set the tube extension to the DVS recommended oil level.

FA13- With the fork collapsed, suck out the excess oil. This may need to be done twice.
Note - Unlike some models, there are holes in the Inner Fork Tube so the oil between the inner and outer tubes will balance. If you don't know what I'm talking about in this note, don't worry. On this model it takes care of itself.

FA14- Install the Fork Spring. If this is a new fork spring you will need to setup preload. The Fork Spring Spacer will probably need to be cut. THIS IS CRITICAL!

FA15- With the fork tube fully collapsed, measure the distance from the top of the tube to the top of the spring. This reference number will help you calculate the actual preload.

FA16- Install the Rebound Adjusting Rod.

FA17- Attach the Bleeding Tool.

FA18- Install the Preload Tube and special steel cupped washer (cupped side down against the preload spacer).

INSTALL THE FORK CAP
CREATE THE CORRECT NUMBER OF CLICKS
FA19- Make sure the Rebound Adjusting Screw is backed out all the way then screw it in 20 clicks. This step is important in setting the fork cap height and the proper number of clicks of adjustment.

FA20- Tighten the Fork Spring Compressor but make sure you stop before the tool hits the top of the fork tube. Tightening the tool is best accomplished with an electric drill with a socket or a speed handle. Do not use an impact or it will destroy the tool.

FA21- Once the fork is compressed enough extend the damping rod and remove the Bleeding Tool. 

FA22- Install the Fork Cap. Make sure the Fork Spring Preload Adjuster is backed out all the way.

FA23- Screw it down until it gently seats the rebound needle.
When the Cap is being screwed on to the Damping Rod the Rebound Adjuster Screw eventually contacts the Rebound Adjuster Rod. As the Cap continues to be screwed on, the Rebound Needle is being compressed until it eventually contacts the Rebound Needle Seat.
If you tighten it with force it will jam the Needle into the Seat and damage this point of contact... so be gentle.

FA24- Bring the jam nut up against the fork cap.

FA25- Back out the adjuster a few clicks to give the Needle clearance from the Seat while you...

FA26- tighten the Jam Nut.
Check the number of Rebound Adjuster clicks that are available. There should be close to 20 clicks as that is what the procedure we use creates. If it is more than 2 clicks different that take the cap off and repeat the procedure.

FA27- Unscrew the Fork Spring Compressor Tool.

FA28- Once again, measure from the top of the tube to the top of the spring. The difference between this measurement and the one taken before installation is the preload.
Setting Spring Preload is a critical part of the installation process. Many bikes, including this one, has a soft Top-out Spring. This means that the Top-out Spring compresses measurably when the main Fork Spring is preloaded. This makes the fork "grow" during spring installation. It also makes it tricky to setup "Actual Preload".

FA29- Install and tighten the fork cap.

FA30- Gently screw the Rebound Adjuster in clockwise until it stops. Back it out and set it to the proper setting according to the DVS.

FA31- Gently screw the Compression Adjuster in clockwise until it stops. Back it out and set it to the proper setting according to the DVS.

FA32- Most importantly, make sure the surface is clean and install the intensely stylish Race Tech stickers.

FA33- Strike the classic "I'm pretending it's a gun pose" (but don't let anyone see you.)
RT_E2_Logo

951.279.6655

info@racetech.com

1501 Pomona Rd. Suite 101
Corona, CA 92878

STOP! Include Service Request Form when shipping components to Race Tech.

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