Fork oil change

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Apr 29, 2016 | 06:24 AM

RayK

Thread Starter

Intermediate

Joined: Apr 2006

Posts: 43

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From: Ontario, Can

Fork oil change

I changed my fork oil on my 13 CVO ultra and now I have a clunk in the front when going slow over bumps, checked everything out and nothing is loose. At higher speeds everything seems fine, no clunk.l used SE heavy fork oil and added 10.7 oz. to each fork leg, any ideas or has someone else experienced this?
Thanks

Apr 29, 2016 | 06:32 AM

Notgrownup

Seasoned HDF Member

Joined: Mar 2009

Posts: 24,711

Likes: 9,212

From: Snow Hill, NC

Mine has done it a bit over the 91000 miles , I change the fluids every 20000 miles and ride....it's not the best front suspension system out there and I just ride, the tolerances aren't the greatest. I believe you have the same suspension as my 2007.

Apr 29, 2016 | 07:28 AM

*Road King*

Tourer

Joined: Jan 2007

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From:

might need to check that steering head bearing nut, might be time for an adjustment

May 1, 2016 | 05:47 AM

RayK

Thread Starter

Intermediate

Joined: Apr 2006

Posts: 43

Likes: 1

From: Ontario, Can

Steering head begs. are good, I'm wondering if I should of went with a lighter weight oil. I'm not sure what weight SE heavy is.

May 1, 2016 | 05:57 AM

CSMHOG

Stellar HDF Member

Joined: Nov 2008

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From: FL

Did you rebuild your forks? Did you install the rebound spring on the correct side of the damper tube?

May 1, 2016 | 07:15 AM

Notgrownup

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Joined: Mar 2009

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From: Snow Hill, NC

The viscosity choice depends on your weight and how much you want it to dive.

May 1, 2016 | 10:22 AM

nhrider1

Road Warrior

Joined: Jul 2012

Posts: 1,566

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From: Londonderry, NH

Quote:

Originally Posted by RayK

Steering head begs. are good, I'm wondering if I should of went with a lighter weight oil. I'm not sure what weight SE heavy is.

There is some debate over exact weight of SE Heavy. Both Bel-Ray and Spectro say it's 20W on their tech pages.

Oil weights ratings can be confusing and I think Viscosity Index may be more accurate for suspension fluids. You can search to find ratings comparisons.

If you have a clunk, your fork oil may be too heavy. Try Bel-Ray 15W or Spectro 15W (or Spectro Type E) or another equivalent suspension fluid. I prefer not to use HD as it's too much of a guessing game.