2013-2017 FIT iCD/iRD Cartridge Rebuild

Required Parts

Required Tools

  • 398-00-320 Tool: 8mm Shaft Bullet, 32 FIT Cartridge
  • 398-00-321 Tool: Bladder Install Spoon, 32 FIT Cartridge
  • 398-00-576 Tooling: 2013 iCD Fork Damper Clocking and Manual Lock-out Tool
  • 398-00-681 2002-017 32 Damper-side and ALL 32-34-36-40 Spring-side Removal Tool
  • 398-00-704 Tooling: Fork Topcap Socket, 28mm, 3/8 Drive
  • 803-00-147 Kit: Shaft Clamps, FORX, Set #2

Supplies Needed

  • 1.5mm Hex Wrench
  • 1/2" Crows Foot
  • 1/2" Wrench
  • 10mm Socket
  • 13mm Cone Wrench
  • 17mm Cone Wrench
  • 2mm Hex Wrench
  • 8mm Socket
  • Flat Screwdriver
  • Long 5mm Hex Wrench or 1/4" Drive 5mm Hex Bit and Extension
  • Mallet
  • Ratchet
  • Seal Pick
  • Thin 13mm Crows Foot
  • Torque Wrench
  • Waste Oil Basin

WARNING: FOX products should be serviced by a qualified bicycle service technician, in accordance with FOX specifications. If you have any doubt whether or not you can properly service your FOX product, then DO NOT attempt it. Improperly serviced products can fail, causing the rider to lose control resulting in SERIOUS INJURY OR DEATH.

Disassembly

img/help/page204-mw1dty/iCD_fork_SP_001-m.jpg

Step 1

Use a 2 mm hex to remove the rebound knob after turning it all the way counter-clockwise. Free the cartridge from the lower assembly with a 10mm socket wrench and the Fox 32mm damper removal tool (PN 398-00-601). Drain the oil into a waste oil basin.

img/help/page204-mw1dty/iCD_fork_SP_001.jpg
img/help/page204-mw1dty/iCD_fork_SP_002.jpg
img/help/page204-mw1dty/iCD_fork_SP_003.jpg
img/help/page204-mw1dty/iCD_fork_SP_004.jpg


img/help/page204-mw1dty/iCD_fork_SP_005-m.jpg

Step 2

Carefully use a thin flat blade screwdriver to remove the iCD actuator cover.

img/help/page204-mw1dty/iCD_fork_SP_005.jpg


img/help/page204-mw1dty/iCD_fork_SP_006-m.jpg

Step 3

Remove the hoopster style retaining ring for the iCD fork actuator. Use a 17mm cone wrench to pull up on the iCD fork actuator. Do not lever the actuator out with the cone wrench, only use the wrench to pull straight up.

img/help/page204-mw1dty/iCD_fork_SP_006.jpg
img/help/page204-mw1dty/iCD_fork_SP_007.jpg
img/help/page204-mw1dty/iCD_fork_SP_008.jpg


img/help/page204-mw1dty/iCD_fork_SP_009-m.jpg

Step 4

Use a 28mm 6-point chamfer-less socket to remove the cartridge from the fork.

img/help/page204-mw1dty/iCD_fork_SP_009.jpg
img/help/page204-mw1dty/iCD_fork_SP_010.jpg
img/help/page204-mw1dty/iCD_fork_SP_011.jpg


img/help/page204-mw1dty/iCD_fork_SP_012-m.jpg

Step 5

Clamp the cartridge and use the FOX iCD Damper Clocking Tool PN 398-00-576, to set the cartridge into descend mode by turning the lockout shaft located next to the bleed screw. Descend mode is attained when the lockout shaft flat is oriented perpendicular to the red bleed set screw, as shown.

img/help/page204-mw1dty/iCD_fork_SP_012.jpg
img/help/page204-mw1dty/iCD_fork_SP_013.jpg


img/help/page204-mw1dty/iCD_fork_SP_015-m.jpg

Step 6

Invert and clamp the cartridge assembly in your shaft clamps (PN 803-00-147). Use a 13mm cone wrench to loosen the seal head. Remove the assembly from the clamps and separate the shaft assembly and body, over a waste oil basin to drain the oil.

img/help/page204-mw1dty/iCD_fork_SP_015.jpg
img/help/page204-mw1dty/iCD_fork_SP_016.jpg


img/help/page204-mw1dty/iCD_fork_SP_017-m.jpg

Step 7

To remove the bladder retainer and retaining ring, place the bladder and cartridge body assembly into the second largest hole in the #2 clamps. Loosely rest the bladder ring on the clamps, as shown below; no clamping pressure is applied to the bladder ring. Be careful not to scratch the cartridge body as you remove the retainer and retaining ring.

img/help/page204-mw1dty/iCD_fork_SP_017.jpg
img/help/page204-mw1dty/iCD_fork_SP_018.jpg
img/help/page204-mw1dty/iCD_fork_SP_019.jpg
img/help/page204-mw1dty/iCD_fork_SP_020.jpg


img/help/page204-mw1dty/iCD_fork_SP_021-m.jpg

Step 8

Insert a 5mm hex wrench up through the cartridge body to engage and stop the internal coupler from rotating as you unthread the topcap with a 28mm 6-point chamfer-less socket. 

img/help/page204-mw1dty/iCD_fork_SP_021.jpg
img/help/page204-mw1dty/iCD_fork_SP_022.jpg


img/help/page204-mw1dty/iCD_fork_SP_023-m.jpg

Step 9

Remove the bladder from the cartridge body and separate the bladder and bladder ring.

img/help/page204-mw1dty/iCD_fork_SP_023.jpg
img/help/page204-mw1dty/iCD_fork_SP_024.jpg


img/help/page204-mw1dty/iCD_fork_SP_031-m.jpg

Step 10

Use a square drive extension or socket to push the iCD bulkhead assembly out through the bottom of the topcap. Do not press against the flat-sided lockout shaft in the center of the bulkhead assembly.

img/help/page204-mw1dty/iCD_fork_SP_031.jpg
img/help/page204-mw1dty/iCD_fork_SP_032.jpg


img/help/page204-mw1dty/iCD_fork_SP_033-m.jpg

Step 11

Clean the bulkhead assembly and replace its o-rings. Remove the red bleed screw with a 1.5mm hex wrench.

img/help/page204-mw1dty/iCD_fork_SP_033.jpg
img/help/page204-mw1dty/iCD_fork_SP_034.jpg


img/help/page204-mw1dty/iCD_fork_SP_036-m.jpg

Step 12

Replace the internal and external topcap o-rings.

img/help/page204-mw1dty/iCD_fork_SP_036.jpg
img/help/page204-mw1dty/iCD_fork_SP_037.jpg


Rebuilding the Shaft Assmebly

img/help/page204-mw1dty/FIT_CTD_wTrail-Adj_019-m.jpg

Step 1

Clean the shaft clamps and shaft with isopropyl alcohol. Clamp the damper shaft assembly just tightly enough to let you unthread the rebound adjuster from the shaft. Remove the rebound adjuster with a 1/2" wrench, followed by the original seal head.

img/help/page204-mw1dty/FIT_CTD_wTrail-Adj_019.jpg
img/help/page204-mw1dty/FIT_CTD_wTrail-Adj_020.jpg
img/help/page204-mw1dty/FIT_CTD_wTrail-Adj_021.jpg


img/help/page204-mw1dty/FIT_CTD_wTrail-Adj_022-m.jpg

Step 2

Drop the rebound tube from the shaft.

img/help/page204-mw1dty/FIT_CTD_wTrail-Adj_022.jpg


Note:  Be careful to keep all the parts in their original assembly order.

CAUTION: Compression check spring preload may dislodge some parts of the piston assembly during removal of the piston bolt.

img/help/page204-mw1dty/removeRbndPistonAssy-m.jpg

Step 3

Invert the damper shaft assembly in the clamps. Remove the main piston assembly with a six-point 8mm box-end wrench or socket and set all parts aside in order.

img/help/page204-mw1dty/removeRbndPistonAssy.jpg
img/help/page204-mw1dty/removeRbndPistonAssy02.jpg


img/help/page204-mw1dty/removeRbndNeedleAssy-m.jpg

Step 4

Use the rebound tube to carefully dislodge and remove the rebound needle and spring from inside the shaft. Push the rebound needle out through the rebound adjuster end of the damper shaft.

img/help/page204-mw1dty/removeRbndNeedleAssy.jpg
img/help/page204-mw1dty/removeRbndNeedleAssy02.jpg


img/help/page204-mw1dty/REBOUND-O-RING-m.jpg

Step 5

Thoroughly clean all parts and remove and discard the rebound needle o-ring if present. FIT iCD forks no longer utilize an o-ring on the rebound needle. 

img/help/page204-mw1dty/REBOUND-O-RING.jpg


img/help/page204-mw1dty/IMG_6687-m.jpg

Step 6

Clamp the shaft carefully so the rebound adjuster end (the end with no retaining ring) is facing up. Install the 8mm Shaft Bullet Tool (398-00-320) and grease with a thin film of Slick Honey.

img/help/page204-mw1dty/IMG_6687.jpg
img/help/page204-mw1dty/IMG_6688.jpg
img/help/page204-mw1dty/IMG_6689.jpg


img/help/page204-mw1dty/IMG_6690-m.jpg

Step 7

Install the new Seal Head Assembly from the rebiuld kit with as shown, then remove the bullet tool.

img/help/page204-mw1dty/IMG_6690.jpg
img/help/page204-mw1dty/IMG_6691.jpg
img/help/page204-mw1dty/IMG_6692.jpg


img/help/page204-mw1dty/IMG_6693-m.jpg

Step 8

Reinstall the Rebound Adjuster Assembly as shown and torque to 55 in-lb (6.2 Nm) with a 1/2in. crows foot. 

img/help/page204-mw1dty/IMG_6693.jpg
img/help/page204-mw1dty/IMG_6694.jpg


img/help/page204-mw1dty/IMG_6695-m.jpg

Step 9

Invert the damper shaft and clamp so the end with the retaining ring is facing up. Slowly fill the damper shaft with 10wt. Red until full. Slowly insert the rebound tube into the full damper shaft. This will displace oil.

img/help/page204-mw1dty/IMG_6695.jpg
img/help/page204-mw1dty/IMG_6696.jpg
img/help/page204-mw1dty/IMG_6698.jpg
img/help/page204-mw1dty/IMG_6699.jpg


img/help/page204-mw1dty/IMG_6700-m.jpg

Step 10

Install the rebound needle and spring as shown followed by the check limiter/spring perch, spring, main piston assembly and piston bolt. Start threading the piston bolt to keep the parts together but do not tighten.

img/help/page204-mw1dty/IMG_6700.jpg
img/help/page204-mw1dty/IMG_6701.jpg
img/help/page204-mw1dty/IMG_6702.jpg
img/help/page204-mw1dty/IMG_6703.jpg
img/help/page204-mw1dty/IMG_6704.jpg


img/help/page204-mw1dty/IMG_6705-m.jpg

Step 11

Make sure that the check shim (the shim under the piston assembly) can move freely as isn't pinched between the piston and the end of the damper shaft. Once sure that the check shim is not pinched, torque the piston bolt to 55 in-lb (6.2 Nm).

img/help/page204-mw1dty/IMG_6705.jpg
img/help/page204-mw1dty/IMG_6706.jpg


img/help/page204-mw1dty/FIT_CTD_wTrail-Adj_028-m.jpg

Step 12

Replace the piston glide ring.

img/help/page204-mw1dty/FIT_CTD_wTrail-Adj_028.jpg


Reassembly

img/help/page204-mw1dty/iCD_fork_SP_025-m.jpg

Step 1

Lubricate the new bladder with slick honey and install the lower bladder ring as shown. Slide the bladder over the body, snapping the bladder lip over the lip of the coupler.

img/help/page204-mw1dty/iCD_fork_SP_025.jpg
img/help/page204-mw1dty/iCD_fork_SP_026.jpg
img/help/page204-mw1dty/iCD_fork_SP_027.jpg


img/help/page204-mw1dty/iCD_fork_SP_038-m.jpg

Step 2

Carefully install the bulkhead assembly in through the bottom of the topcap.

img/help/page204-mw1dty/iCD_fork_SP_038.jpg
img/help/page204-mw1dty/iCD_fork_SP_039.jpg


img/help/page204-mw1dty/iCD_fork_SP_040-m.jpg

Step 3

Clamp the cartridge in the shaft clamps, and lubricate the larger end of the bladder with slick honey.

img/help/page204-mw1dty/iCD_fork_SP_040.jpg
img/help/page204-mw1dty/iCD_fork_SP_041.jpg


img/help/page204-mw1dty/iCD_fork_SP_042-m.jpg

Step 4

Thread the topcap down into the bladder as you push the lower bladder ring upward. If necesarry, the bladder installation tool (PN: 398-00-321) can be used to help tuck the bladder into the topcap. Torque the topcap to 75 in-lb (8.5 Nm).

img/help/page204-mw1dty/iCD_fork_SP_042.jpg
img/help/page204-mw1dty/iCD_fork_SP_043.jpg


img/help/page204-mw1dty/iCD_fork_SP_044-m.jpg

Step 5

Set the bladder and cartridge body assembly into the second largest hole in the shaft clamps PN 803-00-147, loosely resting the bladder ring on the clamps. As you gently pull the assembly down by the topcap, install the bladder retainer and retaining ring.

img/help/page204-mw1dty/iCD_fork_SP_044.jpg
img/help/page204-mw1dty/iCD_fork_SP_045.jpg


img/help/page204-mw1dty/iCD_fork_SP_046-m.jpg

Step 6

Install the rebuilt shaft assembly into the cartridge body. Tighten the seal head to 75 in-lb (8.5 Nm) torque.

img/help/page204-mw1dty/iCD_fork_SP_046.jpg
img/help/page204-mw1dty/iCD_fork_SP_047.jpg


img/help/page204-mw1dty/iCD_fork_SP_049-m.jpg

Step 7

The iCD topcap has enough oil capacity for the hand bleeding process; the FOX FIT bleeder tool (PN 803-00-276) is not needed. Compress the cartridge completely and then fill the topcap with FOX 10wt. red oil.

Repeatedly squeeze and release the bladder to force out any air. Next, cycle the shaft slowly down to full extension, drawing oil into the cartridge. If bubbles are present in the topcap oil, wait until the bubbles have risen to the top before drawing clear oil down into the cartridge.

Repeat the squeeze, cycle, and wait process described above, until air bubbles stop appearing in the topcap as you squeeze and cycle the cartridge. 

Do not let the oil level in your topcap drop to the point where you can ingest air into the cartridge. Add oil to the syring as necesarry.

 

img/help/page204-mw1dty/iCD_fork_SP_049.jpg


img/help/page204-mw1dty/iCD_fork_SP_050-m.jpg

Step 8

When no new air bubbles can be seen in the topcap oil, install the bleed set screw (with new o-ring) to 5 in-lb (0.6 Nm) torque. Drain the excess oil from the topcap and clean out any residue with isopropyl alcohol.

img/help/page204-mw1dty/iCD_fork_SP_050.jpg
img/help/page204-mw1dty/iCD_fork_SP_051.jpg


img/help/page204-mw1dty/iCD_fork_SP_052-m.jpg

Step 9

Test for a good bleed by cycling the cartridge. You are looking for smooth damping, with no bubbling or gurgling sounds. Next, use the FOX iCD tool PN 398-00-576 to reset the lockout shaft to climb mode by turning it 90 degrees (lockout shaft flats are in line with the red bleed screw in Climb mode). Finally, test for a firm lockout.

img/help/page204-mw1dty/iCD_fork_SP_052.jpg


img/help/page204-mw1dty/iCD_fork_SP_054-m.jpg

Step 10

Install the cartridge into the fork, tightening the topcap to 220 in-lb (24.8 Nm) torque.

img/help/page204-mw1dty/iCD_fork_SP_054.jpg
img/help/page204-mw1dty/iCD_fork_SP_055.jpg


img/help/page204-mw1dty/iCD_fork_SP_056-m.jpg

Step 11

Use the crescent shaped end of the FOX iCD tool PN 398-00-576 to set proper bulkhead assembly orientation, relative to the center of the fork steerer tube. 

img/help/page204-mw1dty/iCD_fork_SP_056.jpg
img/help/page204-mw1dty/iCD_fork_SP_057.jpg


img/help/page204-mw1dty/iCD_fork_SP_059-m.jpg

Step 12

Carefully insert the actuator unit, gently rotating it until it aligns with the central lockout shaft. Continue rotating the actuator unit until it aligns and mates with the crescent shaped feature in the bulkhead assembly. Continue pressing the actuator unit in until it engages with the o-ring inside the topcap.

img/help/page204-mw1dty/iCD_fork_SP_059.jpg


img/help/page204-mw1dty/iCD_fork_SP_061-m.jpg

Step 13

Install the hoopster style retaining ring to secure the iCD fork actuator in the topcap.

img/help/page204-mw1dty/iCD_fork_SP_061.jpg
img/help/page204-mw1dty/iCD_fork_SP_060.jpg


img/help/page204-mw1dty/iCD_fork_SP_062-m.jpg

Step 14

Peel the protective film from the adhesive foam tape on the fork actuator cover before installing it over the installed fork actuator unit.

img/help/page204-mw1dty/iCD_fork_SP_062.jpg
img/help/page204-mw1dty/iCD_fork_SP_063.jpg
img/help/page204-mw1dty/iCD_fork_SP_064.jpg


img/help/page204-mw1dty/v20-m.jpg

Step 15

Invert the fork and fill with 30cc FOX 20 wt. Gold oil in each leg. Gold oil should only be used with compatible 32mm dust wipers found in kit: 803-00-878.

Install the bottom nuts with new crush washers, tightening to 50 in-lb (5.7 Nm) torque. Install the rebound knob with a 2 mm hex, making sure the set screw correctly settles into its indentation on the rebound adjuster; tighten to 11 in-lb (1.2 Nm) torque. 

 

img/help/page204-mw1dty/v20.jpg
img/help/page204-mw1dty/iCD_fork_SP_066.jpg
img/help/page204-mw1dty/iCD_fork_SP_067.jpg


Additional information regarding updating from 10wt. Green oil to the new 20wt. Gold oil can be found at: http://www.ridefox.com/help.php?m=bike&id=452 »


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