Ford Super Duty Knuckle Seal Tool - AKA OTC 6695

When I decided to replace my ball joints I had some trouble finding detailed information on the axle seal tool that is required to install the new axle seal (F81Z-3254-CB). The tool is required to replace the ball joints on 1999-2003 Ford F250 or F350 trucks. This is the oft referred to "special tool". The tool can be made with common fittings that can be found at a hardware store.

Here are some pictures of the tool I came up with. The axle seal (knuckle seal) installs easily with this tool. It just takes a few whacks with a 2 pound sledge. The axle seal needs to seat against the axle.

If you would prefer to purchase the tool for a good price it can be found by clicking the following link:
6695 - Ford Axle Shaft Seal Installer. The advantage of the actual tool, over the home made version, is that it controls where the seal seats, avoiding the possibility of damaging the seal.

Required Parts:

Black or galvanized 1 1/4" pipe (about 8-12" long)

Black or galvanized 1 1/4" floor flange

Black or galvanized 1 1/4" pipe cap

Tools Required:

Pipe wrench, if you want to tighten it up.

Grinder

parts for axle seal tool

The floor flange must be ground down to a diameter of 3 and 13/16". This is done in order to fit inside the axle seal (F81Z-3254-CB).

NOTE: Some have reported needing the final diameter different than what is listed here. It is incumbent on you, the reader of this, or any of the other articles on this site to verify your requirements. A good suggestion would be to measure the needed diameter prior to grinding.

axle seal tool flange

Note how the floor axle seal (knuckle seal) tool fits inside the axle seal (F81Z-3254-CB).

axle seal tool in seal

The picture below illustrates how the floor flange must fit inside the axle seal (knuckle seal) (F81Z-3254-CB).

axle seal tool in seal partial

The Ford "special tool" part numbers are 205-429 for the installer and 205-199 for the driver.

You can buy the "special tool" for about 60$-$80 using the part number OTC 6695.

BACK

Site information: This site, www.superdutypsd.com, has no affiliation with any manufacturer, vendor, forum, or other site referenced here. The manufacturer's names or trademarks used herein are referenced solely for identification purposes and are not intended by superdutypsd.com to cause confusion as to source or sponsorship. This site may, at times, run advertising banners or text link ads from entities mentioned on these pages. The owner of this site may be a member of various diesel related forums which may be referenced on these pages.

This site is neither authorized by, nor affiliated with, Ford Motor Company.

DISCLAIMER: I am not a mechanic. The articles and information on this site just document how I did things. Use this information at your own risk.