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Ford power steering o-rings #4457518
07/12/17 06:15 PM
07/12/17 06:15 PM
Joined: Apr 2012
Posts: 2,783
West Michigan
buck91 Offline OP
buck91  Offline OP

Joined: Apr 2012
Posts: 2,783
West Michigan
So in the middle of a power steering pump replacement on a Ford 4.2L. Just about done, actually. Put the new teflon o-ring on the high pressure fitting, threaded everything together. Well, the metal hard line coming out the bottom of the pump through the teflon o-ring fitting was rather loose and could be rotated easily after torquing the fitting. I have to assume this is not normal. does anybody have experience with this application? My reman Napa pump came with a new teflon ring which I used as well as a new nitrile rubber o-ring, of smaller diameter, which I did not use since none like that were present on the original assembly. Should this go on the tip of the high pressure line fitting>?


2011 F150 4x4 5.0L
1996 Mustang GT 5spd/ragtop
Re: Ford power steering o-rings [Re: buck91] #4457524
07/12/17 06:20 PM
07/12/17 06:20 PM
Joined: Jun 2005
Posts: 11,960
Santa Barbara, CA
bdcardinal Online content
bdcardinal  Online Content

Joined: Jun 2005
Posts: 11,960
Santa Barbara, CA
There are 2 common teflon o-ring numbers N808898-S is about the size of a dime. N808897-S is a bit smaller. It is one of those 2.


2014 Ford Mustang GT Track Pack
1995 Ford Mustang GT

Ford/Mazda Parts Counter
NRA Benefactor Member
Opinions expressed are my own.
Re: Ford power steering o-rings [Re: buck91] #4457528
07/12/17 06:22 PM
07/12/17 06:22 PM
Joined: Apr 2012
Posts: 2,783
West Michigan
buck91 Offline OP
buck91  Offline OP

Joined: Apr 2012
Posts: 2,783
West Michigan
Yes, the teflon o-ring isn't the issue. The metal line seems loose in the fitting after torquing. Is there a seconardy o-ring needed? Is it normal to have the line loose with the fitting tight?


2011 F150 4x4 5.0L
1996 Mustang GT 5spd/ragtop
Re: Ford power steering o-rings [Re: buck91] #4457529
07/12/17 06:23 PM
07/12/17 06:23 PM
Joined: Sep 2004
Posts: 8,011
Marshfield , MA
andyd Offline
andyd  Offline

Joined: Sep 2004
Posts: 8,011
Marshfield , MA
Did the pump come with instructions? The new master cylinder to the Rat contained directions on how to bleed it. Good thing, because I never would have figured it out. grin2


'16 Camry LE STP synth 0w20 and STP filter. the Fridge

1994 Ranger ,the Rat, 5w30 dino, STP filter

'16 Camry SE, Valvoline HM 0w20 and OEM filter
Thick oil is better grin2
Re: Ford power steering o-rings [Re: buck91] #4457530
07/12/17 06:24 PM
07/12/17 06:24 PM
Joined: Apr 2012
Posts: 2,783
West Michigan
buck91 Offline OP
buck91  Offline OP

Joined: Apr 2012
Posts: 2,783
West Michigan
Just generic instructions. The baggy with the teflon o-ring and second, smaller o-ring only contain instructions on the teflon o-ring install.


2011 F150 4x4 5.0L
1996 Mustang GT 5spd/ragtop
Re: Ford power steering o-rings [Re: buck91] #4457573
07/12/17 07:11 PM
07/12/17 07:11 PM
Joined: Mar 2012
Posts: 1,456
San Antonio, TX
E150GT Offline
E150GT  Offline

Joined: Mar 2012
Posts: 1,456
San Antonio, TX
I know on my truck which is older, the metal line can rotate in the fitting after torquing. If it doesn't leak, you're good.


1984 Mercedes-Benz 300SD - 100k
1995 F150 XL 4.9 reg cab 5MT - 251k 5w30
2016 Mazda6 Touring 6MT - 57k 10w30
2006 Buick Lucerne CXL 3.8 31k 5w30
Re: Ford power steering o-rings [Re: buck91] #4457583
07/12/17 07:23 PM
07/12/17 07:23 PM
Joined: Apr 2006
Posts: 9,344
Birmingham, AL
01rangerxl Offline
01rangerxl  Offline

Joined: Apr 2006
Posts: 9,344
Birmingham, AL
^ X2. Pretty sure the line is supposed to be able to turn since one end is bolted to your steering/frame and the other to an engine mounted part. It moves on my trucks. The rubber o-ring is the primary seal and the teflon stops seepage from that.

If there are no leaks, you are good.

*Edit...re-read...so you didn't see any rubber o-ring when you took the high pressure line off the pump? There should be one on the line and the teflon goes on the fitting.




Last edited by 01rangerxl; 07/12/17 07:37 PM.

2002 Ford Ranger XLT | 3.0 V6 Auto 2WD | 227K miles
1994 Ford Ranger STX | 4.0 V6 Manual 4X4 | 201K miles
1994 Ford Explorer XLT | 4.0 V6 Auto 4X4 | 247K miles
Re: Ford power steering o-rings [Re: buck91] #4458209
07/13/17 12:11 PM
07/13/17 12:11 PM
Joined: Apr 2012
Posts: 2,783
West Michigan
buck91 Offline OP
buck91  Offline OP

Joined: Apr 2012
Posts: 2,783
West Michigan
Well after pulling it apart and futzing with a junky Dorman replacement o ring, seems to be all set.

FWIW, the Harbor freight pulley remover and installer works ok. Except for installing. Thrust bearing seized and threaded adaptor snapped off inside the pump shaft before the pulley was fully seated. Still about 1/8in too far out ... But belt runs smooth and silent...?? Probably going to leave it for now.

Not sure how to imbued, but here's a short vid.

https://youtu.be/HHDNqx4nwd4


Edit: wow just watch the clip. Terrible Mic pick up. Only noise I was hearingn was the fan and a throttle body with the rest of the intake off.

Last edited by buck91; 07/13/17 12:13 PM.

2011 F150 4x4 5.0L
1996 Mustang GT 5spd/ragtop
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