QU40557 1980-1997 Ford Dana IFS Front Axle Slip Yoke Seal

QU40557 Axle Shaft Slip Yoke Seal for Ford Twin Traction Beam® Front Axles is a genuine original equipment part for all 1983.5-1996 Ford Dana 44IFS and 1983.5-1997 Ford Dana 50 IFS Twin Traction Beam® (TTB)front axles in full-size Ford 4x4s. Also fits mid-size models 1993-1997 Ford Ranger Dana 28IFS Axles, 1990-1997 Ford Ranger Dana 35IFS Front Axles, 1990-1994 Explorer Dana 35IFS axles.

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Dan the Gear Man® Tech Notes:
Press Fit Seal
Pre-Grease
When Installing
Maintenance
Matching Parts and Tools
Applications

Tech Note 1: Press Fit Seal
QU40557 is a press fit Seal the fits on axle shaft slip yokes used on Dana 35IFS Dana 44 and Dana 50 IFS and late production Dana 28IFS Twin Traction Beam® Front Axles. This seal is a secondary seal that provides additional protection to the axle shaft splines above and beyond the protection provided by QU40572 Slip Joint Boot.

Tech Note 2: Pre-Grease
Always pre-grease the axle shaft and slip yoke splines before assembly with QU90018 or similar NLGI #2 GC-LB water resistant grease.

Tech Note 3: When Installing
When starting the axle shaft splines into your slip yoke, verify that the Slip Yoke and Right Axle Shaft are as close to being in phase as possible. (The center line of the yoke holes line up to each other with little or no offset.)

Tech Note 4: Maintenance
IFS Axle Shaft Slip Yoke Failures operating failures are usually a result of either a broken axle u-joint or lack of lubrication for the splines. Good preventative maintenance can usually prevent those type of failures. A good number of axle shafts are also wrecked by poor service procedures during u-joint replacement. Over the years I have seen a lot of axle shafts with bent or broken yokes caused by the slam-bang u-joint removal and installation methods. A C-Frame Press with the correct adapters is both the safest and best way to remove or install axle u-joints.

Tech Note 5: Matching Parts and Tools
Interactive Exploded View XV1010DT 1995, 1996, 1997 Ford F250 Dana 50IFS Axle
QU40572 Slip Yoke Boot
QU40084 Slip Joint Boot Clip Large End
QU40085 Slip Joint Boot Clip Small End
QU40626 Non-Greaseable Slip Yoke 1983-1996 Dana 44IFS Bronco, F150, Light Duty F250
QU40815 Non-Greaseable Slip Yoke Dana 50IFS 1983-1997 Heavy Duty F250, 1983-1985.5 F350
QU40435 Right Inner Axle Shaft for F250, 1983-1985.5 F350 with Dana 50IFS Front Axle
QU40616 Right Axle Shaft for F250 with Dana 44IFS Front Axle
QU40263 Right Axle Shaft for Bronco and F150
QU90018 Pyroplex® Protection ES NLGI #2 GC-LB Water Resistant Synthetic Grease
Ford Shop Manuals

Applications:
Ford:
F150 and Bronco Dana 44IFS: 1983.5, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996
F-350 Dana 50IFS: 1983.5, 1984, early 1985
F-250 with Dana 44IFS Front Axle: 1983.5, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996
F-250 with Dana 50IFS Front Axle: 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
Ford Ranger Dana 35IFS: 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
Ford Explorer Dana 35IFS: 1990, 1991, 1992, 1993, 1994
Ford Ranger Dana 28IFS: 1993, 1994, 1995, 1996, 1997