power steering seal replacement - The 1947 - Present Chevrolet & GMC Truck Message Board Network

dart_451 · 05-16-2013, 11:30 AM

hi, i have a 72 c10 and the seal around where the pitman arm is leaking badly.i tried all the differant fluids to help. but didnt. so. how hard is it to replace the seal.i have the pitman arm puller.anyone have any helpful hints on replaceing one? thanks

MARKDTN · 05-16-2013, 04:50 PM

I would almost say get another used or rebuilt box. I have not had much luck with replacing those seals.

71K20chevy · 05-16-2013, 04:52 PM

Advance charges $140 for a new box, so I'd say just replace the whole thing.

68gmsee · 05-16-2013, 05:56 PM

If you have the time and are fairly comfortable with mechanicking, it's not hard to replace the seals. I rebuilt my gear box about 1-1/2 years ago for the same reason and was surprised how easy it was to do. However you have to read and/or view videos and follow the procedures. Several videos on youtube and procedure on the net if you do a search.

Otherwise, as mentioned above, get a rebuilt one.

Tx Firefighter · 05-17-2013, 05:59 AM

No reason to replace the box for that leak.

Remove pitman arm. Remove snap ring. Place drain pan under steering box. Start engine and turn steering wheel lock to lock. It will blow the old seals out and they will land in the drain pan. Install new seals and snap ring. Reinstall pitman arm.

It's a 20 minute job am will cost you about 15 bucks including the fluid.

Worst case the seals won't blow out and you have to reach up in there and pull them with a pointy tool. That might add another 10 minutes to the job.
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05-16-2013, 11:30 AM	#1
dart_451 Registered User Join Date: May 2007 Location: topeka,ks Posts: 77	power steering seal replacement hi, i have a 72 c10 and the seal around where the pitman arm is leaking badly.i tried all the differant fluids to help. but didnt. so. how hard is it to replace the seal.i have the pitman arm puller.anyone have any helpful hints on replaceing one? thanks

05-16-2013, 04:50 PM	#2
MARKDTN Registered User Join Date: Jan 2011 Location: Chattanooga, TN Posts: 2,159	Re: power steering seal replacement I would almost say get another used or rebuilt box. I have not had much luck with replacing those seals. __________________ '83 K20-TPI '73 C10 '79 C10-ex-diesel(SOLD) '07 Tahoe(Son driving) '14 Suburban-DD '71 C10-current project

05-16-2013, 04:52 PM	#3
71K20chevy Registered User Join Date: Jul 2012 Location: Ft Wayne Indiana Posts: 1,204	Re: power steering seal replacement Advance charges $140 for a new box, so I'd say just replace the whole thing. __________________ 71 K20 64 GMC mud truck

05-16-2013, 05:56 PM	#4
68gmsee Active Member Join Date: Jul 2007 Location: Centrally located between Houston, Austin and Waco. BCS area. Posts: 7,947	Re: power steering seal replacement If you have the time and are fairly comfortable with mechanicking, it's not hard to replace the seals. I rebuilt my gear box about 1-1/2 years ago for the same reason and was surprised how easy it was to do. However you have to read and/or view videos and follow the procedures. Several videos on youtube and procedure on the net if you do a search. Otherwise, as mentioned above, get a rebuilt one. __________________ 68 GMC 250/3 speed Saginaw p/b p/s 69 Chevy 350/350 currently in pieces still lookin for a cab 06 Trailblazer I just want a vehicle that I can work on, that won't talk to me, leave error msgs or keep track of how I drive...

05-17-2013, 05:59 AM	#5
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Re: power steering seal replacement No reason to replace the box for that leak. Remove pitman arm. Remove snap ring. Place drain pan under steering box. Start engine and turn steering wheel lock to lock. It will blow the old seals out and they will land in the drain pan. Install new seals and snap ring. Reinstall pitman arm. It's a 20 minute job am will cost you about 15 bucks including the fluid. Worst case the seals won't blow out and you have to reach up in there and pull them with a pointy tool. That might add another 10 minutes to the job. Posted via Mobile Device



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