Power Steering Hose Connections - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Cheyenne Supr · 12-02-2003, 11:32 PM

Hello,
I have a 72 Cheyenne 1/2 ton I am restoring (350 w/ TH400). The flare fitting on the power steering return line to the steering gear won't seal. I have a brand new OEM line with good threads. When the tubing nut is tightened all the way down to the last thread, there is still an 1/8" of play in the steel tube...the flare does not seat. From what I can view of the steering gear connection, it doesn't appear to have a flare fitting seat...it looks more like an o-ring seat. Does anybody know if some of the later model steering gears used an o-ring seal on the power steering hoses? The previous owner had many later model parts on this truck and I'm wondering if this may be a later model steering gear. There are a couple of casting numbers on the steering gear; 7802644 & 5686815. Any way to reference those to determine what years this gear was used in? Any other thoughts?
Thanks for your help,
Larry

*rage'nrat638* · 12-02-2003, 11:45 PM

does the female threaded part of the gear box have a taper seat?? inside...

sounds to me like the male threaded part of the hose don't go in far enough...if it's tight and the metal hose still is loose...

try a o-ring inside ...if it's the return side it's low pressure anyway

*rage'nrat638* · 12-02-2003, 11:47 PM

o my 69 did have o-ringy dingy's

cableguy0 · 12-02-2003, 11:50 PM

a lot of gm power steering systems used the o-ring seal its a good possibility there should be one there and you dont have it in there

jhow66 · 12-02-2003, 11:56 PM

Taper seats and o-ring seats are two different hoses. You have got the late model box. If you are using the early pump and late box you will have to change the pressue fitting in pump or take the new hose to a hose shop and have them put the right end on it.

hgs_notes · 12-03-2003, 12:55 AM

I just had this happen to me. The 1977 and later boxes look identical, but they use O-ring fittings on the hoses. There was no adapter I could find, so I had to find another steering box or have custom hoses made. I went with the steering box for about $45 instead of odd ball hoses. Live and learn.

HG

BtnkBndt · 12-03-2003, 01:08 AM

When I got mine the first one seemed to be missing a fitting, just a deep threaded hole. I took it back and had them pull a few more, same part #. Found one with a male fitting in place. Well, I needed a female fitting for my hose(male). I added a brass fitting (basically an extra long nut) which then made it a female fitting. Hasn't leaked a drop.

Confused yet?

Longhorn Man · 12-03-2003, 01:18 AM

Looks like you may have your answer...so let me be the first to welcome you to the board from Central Ohio.

Cheyenne Supr · 12-05-2003, 08:28 PM

Thanks for the replies. After further investigation, I'm fairly certain this steering box takes the o-ring type of hose connections. Although I'm unable to positively identify the year of the gear, I did find a hydraulic hose shop who has ordered the correct fittings (we hope) and can make custom hoses for me. I'll let you know how it works out.
Thanks for the assistance!

krue · 12-05-2003, 08:35 PM

Welcome to the board from South Mississippi!

SEVEND2 · 12-05-2003, 08:48 PM

Welcome to the Boards from Sunny So. Calif.

I had pretty close tot he same issue on mine, I had to change out the pump, to a new one, and then i got a good seal, It was a Bad pump on the one i got. Might want to check that

Cheyenne Supr · 12-06-2003, 11:37 AM

Thanks again for all the replies & welcomes.
Hey, SEVEND2, my old boss has a ranch in Wildomar....used to be called Lake Elsinore. Worked for him in Ontario, Calif.
We'll see how the 'custom' hoses work out.
Larry

SEVEND2 · 12-07-2003, 05:28 PM

The town next to me is Lake Elsinore, Wildomar has alot of Ranches... We like the open spaces!!!

ABHaulR · 12-07-2003, 08:20 PM

on the back of the pump you can change the fitting type. the large hex base that the hose screws into can be taken out to change to the one you have. just go to a junk yard and take the one out that you need. clean it up and there you go. that way you dont have to go back to the parts house and go through thier inventory to find the right one. its not that bad.
Dwayne

12-02-2003, 11:32 PM	#1
Cheyenne Supr Registered User Join Date: Dec 2003 Location: Nashville Posts: 48	Power Steering Hose Connections Hello, I have a 72 Cheyenne 1/2 ton I am restoring (350 w/ TH400). The flare fitting on the power steering return line to the steering gear won't seal. I have a brand new OEM line with good threads. When the tubing nut is tightened all the way down to the last thread, there is still an 1/8" of play in the steel tube...the flare does not seat. From what I can view of the steering gear connection, it doesn't appear to have a flare fitting seat...it looks more like an o-ring seat. Does anybody know if some of the later model steering gears used an o-ring seal on the power steering hoses? The previous owner had many later model parts on this truck and I'm wondering if this may be a later model steering gear. There are a couple of casting numbers on the steering gear; 7802644 & 5686815. Any way to reference those to determine what years this gear was used in? Any other thoughts? Thanks for your help, Larry __________________ Larry 72 Cheyenne LWB Fleetside Oak Bed 350 w/ TH400 (finally complete!). 69 Chevy C-10 LWB 350 w/ TH350 (good 'ol rusty bullet proof dependable hauler). 02 Suburban Z71 4x4 (wife's driver).

12-02-2003, 11:50 PM	#4
cableguy0 Senior Member Join Date: Apr 2000 Location: Delta,Pa Posts: 14,950	a lot of gm power steering systems used the o-ring seal its a good possibility there should be one there and you dont have it in there __________________ Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member.

12-02-2003, 11:56 PM	#5
jhow66 Registered User Join Date: Jun 2002 Location: Knoxville Tenn. Posts: 3,058	Taper seats and o-ring seats are two different hoses. You have got the late model box. If you are using the early pump and late box you will have to change the pressue fitting in pump or take the new hose to a hose shop and have them put the right end on it. __________________ 56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer

12-03-2003, 12:55 AM	#6
hgs_notes GEARHEAD Join Date: Aug 2003 Location: MN Posts: 6,122	I just had this happen to me. The 1977 and later boxes look identical, but they use O-ring fittings on the hoses. There was no adapter I could find, so I had to find another steering box or have custom hoses made. I went with the steering box for about $45 instead of odd ball hoses. Live and learn. HG __________________ If no one knows what you're doing, they can't tell you you're doing it wrong HG's Dream Car Build - Shelby Cobra Kit Build your own adjustable track bar 71 Long Fleet C/10 72 Jimmy 4x4 (Junkyard Jimmy) HG's Plow Truck '78 K35 Dually Bigass Farm Truck HG's thread of miscellaneous stuff

12-03-2003, 01:08 AM	#7
BtnkBndt Pennyless Fool Join Date: Oct 2003 Location: Forney,Tx Posts: 439	When I got mine the first one seemed to be missing a fitting, just a deep threaded hole. I took it back and had them pull a few more, same part #. Found one with a male fitting in place. Well, I needed a female fitting for my hose(male). I added a brass fitting (basically an extra long nut) which then made it a female fitting. Hasn't leaked a drop. Confused yet? __________________ "Who owns this car with the peace sign, the mag wheels, and four on the floor?" 67 Short Step 283/TH400/4.11

12-02-2003, 11:45 PM	#2
rage'nrat638 Account Suspended Join Date: Mar 2003 Location: THE FALL GUY CHICAGO IL Posts: 5,883	does the female threaded part of the gear box have a taper seat?? inside... sounds to me like the male threaded part of the hose don't go in far enough...if it's tight and the metal hose still is loose... try a o-ring inside ...if it's the return side it's low pressure anyway

12-02-2003, 11:47 PM	#3
rage'nrat638 Account Suspended Join Date: Mar 2003 Location: THE FALL GUY CHICAGO IL Posts: 5,883	o my 69 did have o-ringy dingy's

12-03-2003, 01:18 AM	#8
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Looks like you may have your answer...so let me be the first to welcome you to the board from Central Ohio.

12-05-2003, 08:28 PM	#9
Cheyenne Supr Registered User Join Date: Dec 2003 Location: Nashville Posts: 48	Thanks for the replies. After further investigation, I'm fairly certain this steering box takes the o-ring type of hose connections. Although I'm unable to positively identify the year of the gear, I did find a hydraulic hose shop who has ordered the correct fittings (we hope) and can make custom hoses for me. I'll let you know how it works out. Thanks for the assistance! __________________ Larry 72 Cheyenne LWB Fleetside Oak Bed 350 w/ TH400 (finally complete!). 69 Chevy C-10 LWB 350 w/ TH350 (good 'ol rusty bullet proof dependable hauler). 02 Suburban Z71 4x4 (wife's driver).

12-05-2003, 08:35 PM	#10
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,450	Welcome to the board from South Mississippi! __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"

12-05-2003, 08:48 PM	#11
SEVEND2 Registered User Join Date: Aug 2001 Location: Menifee, Calif, USA Posts: 2,145	Welcome to the Boards from Sunny So. Calif. I had pretty close tot he same issue on mine, I had to change out the pump, to a new one, and then i got a good seal, It was a Bad pump on the one i got. Might want to check that __________________ With a 1972 Chevy Custom-10 Long bed w/350cid th350, (under-construction). Progress on truck so far (follow link): http://67-72chevytrucks.com/vboard/s...ad.php?t=51051 and stage 2 http://67-72chevytrucks.com/vboard/s...ad.php?t=58132 ~ "Why couldn't you have just put the bunny back in the box?" ~

12-06-2003, 11:37 AM	#12
Cheyenne Supr Registered User Join Date: Dec 2003 Location: Nashville Posts: 48	Thanks again for all the replies & welcomes. Hey, SEVEND2, my old boss has a ranch in Wildomar....used to be called Lake Elsinore. Worked for him in Ontario, Calif. We'll see how the 'custom' hoses work out. Larry __________________ Larry 72 Cheyenne LWB Fleetside Oak Bed 350 w/ TH400 (finally complete!). 69 Chevy C-10 LWB 350 w/ TH350 (good 'ol rusty bullet proof dependable hauler). 02 Suburban Z71 4x4 (wife's driver).

12-07-2003, 05:28 PM	#13
SEVEND2 Registered User Join Date: Aug 2001 Location: Menifee, Calif, USA Posts: 2,145	The town next to me is Lake Elsinore, Wildomar has alot of Ranches... We like the open spaces!!! __________________ With a 1972 Chevy Custom-10 Long bed w/350cid th350, (under-construction). Progress on truck so far (follow link): http://67-72chevytrucks.com/vboard/s...ad.php?t=51051 and stage 2 http://67-72chevytrucks.com/vboard/s...ad.php?t=58132 ~ "Why couldn't you have just put the bunny back in the box?" ~

12-07-2003, 08:20 PM	#14
ABHaulR Registered User Join Date: Jun 2003 Location: West Valley City, Ut Posts: 311	on the back of the pump you can change the fitting type. the large hex base that the hose screws into can be taken out to change to the one you have. just go to a junk yard and take the one out that you need. clean it up and there you go. that way you dont have to go back to the parts house and go through thier inventory to find the right one. its not that bad. Dwayne __________________ 72' GMC Suburban 10 1/2" of Lift, 40" Tires! Waiting for restoration 67' Chevy, What to do??? And Bad Ass American Bulldogs!



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