Steering Issues - The 1947 - Present Chevrolet & GMC Truck Message Board Network

raymond0275 · 01-25-2018, 11:26 AM

Ok, so every time I turn on my 59 Apache with a Mustang II front suspension the steering turn itself to the right, I can't figure out what the heck is going on. I have bought the flow control valve, hoses are in their right place. can anyone offer any help?

PDW HOTRODS · 01-25-2018, 02:01 PM

If it does this parked it must still have too much pressure if there is no bind in column. What pump , and what valve do you have? Is it 70's style Chevy pump? Inside where the high pressure hose mounts to the pump there is a spring and piston set up. I have had the piston stick in a brand new pump before. If it sticks you will have high pressure. You can take off the hose and the adapter it bolts to and you can push in there to see if it is free or stuck.

raymond0275 · 01-25-2018, 03:05 PM

Thanks, for that info; I will look into it this afternoon. I will let you know what I find out.

raymond0275 · 01-25-2018, 03:16 PM

Here are the specs for the pump and valve:

Valve: Mustang II Power Steering Flow Valve for GM Pump, 2 GPM.

Pump: has a 3/8" hose barb for return line and a female 5/8"-18 inverted flare fitting for the high-pressure outlet.

Equivalent to original pump found on:
1970-74 Camaro/Firebird
1970-74 Nova
1970-74 Chevelle/Malibu
1970-74 Monte Carlo

All Speedway Motor parts.

dsraven · 01-25-2018, 03:46 PM

like PDW says, ensure the column is free turning with no tight spots because that can hold the shaft against the steering valve and cause it to turn the wheels.
check the pump pressure and compare to what the rack was built for

so, for more info, it turns the wheels while driving, while on stands or while parked running?

_Ogre · 01-25-2018, 06:54 PM

it sounds like you have the lines reversed into the rack

mr48chev · 01-26-2018, 03:34 AM

I'd have to go out and look at one of my MIi racks out back but ponder if you can actually reverse the hoses.

raymond0275 · 01-28-2018, 12:02 PM

At Ogre:
No, sir lines are where they are supposed to be.

raymond0275 · 01-28-2018, 12:03 PM

At mr48chev:
Checked them once, twice, and three times lines are good.

raymond0275 · 01-28-2018, 12:05 PM

The shaft is all clear.

mr48chev · 01-28-2018, 04:39 PM

I fought a couple of the Ford power steering units that took the place of the drag link on the linkage back years ago and who ever had rebuilt the unit had got the adjustment on the valving right. One my fault one that someone else had done. I'm thinking that is the issue here. The valving inside the rack might be out of adjustment and I have no idea of how to adjust it on that rack.

raymond0275 · 01-30-2018, 02:50 PM

AT: MR48Chevy,
Thank You Sir, I will look into it.
Raymond

mr48chev · 01-30-2018, 03:45 PM

Looking at this all Ford racks are not the same. http://my.cardone.com/techdocs/PT%2022-0007.pdf

One model is reverse from the other two.

It also seems that some models have different size pressure and return fittings that make life easy while others as mentioned in that link have the same size pressure and return line fittings. I've never paid much attention to the two power racks I have out back that are from a MII and a Mercury Bobcat wagon but I'll see if I can check.

I am not finding anything about the internal hydraulics of the power racks though.

_Ogre · 01-31-2018, 07:14 PM

read this thread on the hamb https://www.jalopyjournal.com/forum/...y-help.613470/
typically you convert a mustII rack to AN fittings, it's easy to reverse the lines

raymond0275 · 02-12-2018, 07:03 PM

Thank you all for your input, went ahead and ordered a new rack and pinion, the valves were no good inside the rack. Once again thank you..

01-25-2018, 11:26 AM	#1
raymond0275 Registered User Join Date: Jun 2017 Location: Larete Tejas Posts: 39	Steering Issues Ok, so every time I turn on my 59 Apache with a Mustang II front suspension the steering turn itself to the right, I can't figure out what the heck is going on. I have bought the flow control valve, hoses are in their right place. can anyone offer any help?

01-25-2018, 02:01 PM	#2
PDW HOTRODS Registered User Join Date: Nov 2006 Location: Sutherlin Oregon Posts: 493	Re: Steering Issues If it does this parked it must still have too much pressure if there is no bind in column. What pump , and what valve do you have? Is it 70's style Chevy pump? Inside where the high pressure hose mounts to the pump there is a spring and piston set up. I have had the piston stick in a brand new pump before. If it sticks you will have high pressure. You can take off the hose and the adapter it bolts to and you can push in there to see if it is free or stuck.

01-25-2018, 03:05 PM	#3
raymond0275 Registered User Join Date: Jun 2017 Location: Larete Tejas Posts: 39	Re: Steering Issues Thanks, for that info; I will look into it this afternoon. I will let you know what I find out.

01-25-2018, 03:16 PM	#4
raymond0275 Registered User Join Date: Jun 2017 Location: Larete Tejas Posts: 39	Re: Steering Issues Here are the specs for the pump and valve: Valve: Mustang II Power Steering Flow Valve for GM Pump, 2 GPM. Pump: has a 3/8" hose barb for return line and a female 5/8"-18 inverted flare fitting for the high-pressure outlet. Equivalent to original pump found on: 1970-74 Camaro/Firebird 1970-74 Nova 1970-74 Chevelle/Malibu 1970-74 Monte Carlo All Speedway Motor parts.

01-25-2018, 03:46 PM	#5
dsraven Registered User Join Date: Nov 2010 Location: calgary alberta Posts: 7,837	Re: Steering Issues like PDW says, ensure the column is free turning with no tight spots because that can hold the shaft against the steering valve and cause it to turn the wheels. check the pump pressure and compare to what the rack was built for so, for more info, it turns the wheels while driving, while on stands or while parked running?

01-25-2018, 06:54 PM	#6
_Ogre Registered User Join Date: Jan 2012 Location: Motown Posts: 7,670	Re: Steering Issues it sounds like you have the lines reversed into the rack __________________ cool, an ogre smiley Ogre's 58 Truk build how to put your truck year and build thread into your signature shop air compressor timer

01-26-2018, 03:34 AM	#7
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,304	Re: Steering Issues I'd have to go out and look at one of my MIi racks out back but ponder if you can actually reverse the hoses. __________________ Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.

01-28-2018, 12:02 PM	#8
raymond0275 Registered User Join Date: Jun 2017 Location: Larete Tejas Posts: 39	Re: Steering Issues At Ogre: No, sir lines are where they are supposed to be.

01-28-2018, 12:03 PM	#9
raymond0275 Registered User Join Date: Jun 2017 Location: Larete Tejas Posts: 39	Re: Steering Issues At mr48chev: Checked them once, twice, and three times lines are good.

01-28-2018, 12:05 PM	#10
raymond0275 Registered User Join Date: Jun 2017 Location: Larete Tejas Posts: 39	Re: Steering Issues The shaft is all clear.

01-28-2018, 04:39 PM	#11
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,304	Re: Steering Issues I fought a couple of the Ford power steering units that took the place of the drag link on the linkage back years ago and who ever had rebuilt the unit had got the adjustment on the valving right. One my fault one that someone else had done. I'm thinking that is the issue here. The valving inside the rack might be out of adjustment and I have no idea of how to adjust it on that rack. __________________ Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.

01-30-2018, 02:50 PM	#12
raymond0275 Registered User Join Date: Jun 2017 Location: Larete Tejas Posts: 39	Re: Steering Issues AT: MR48Chevy, Thank You Sir, I will look into it. Raymond

01-30-2018, 03:45 PM	#13
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,304	Re: Steering Issues Looking at this all Ford racks are not the same. http://my.cardone.com/techdocs/PT%2022-0007.pdf One model is reverse from the other two. It also seems that some models have different size pressure and return fittings that make life easy while others as mentioned in that link have the same size pressure and return line fittings. I've never paid much attention to the two power racks I have out back that are from a MII and a Mercury Bobcat wagon but I'll see if I can check. I am not finding anything about the internal hydraulics of the power racks though. __________________ Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.

01-31-2018, 07:14 PM	#14
_Ogre Registered User Join Date: Jan 2012 Location: Motown Posts: 7,670	Re: Steering Issues read this thread on the hamb https://www.jalopyjournal.com/forum/...y-help.613470/ typically you convert a mustII rack to AN fittings, it's easy to reverse the lines __________________ cool, an ogre smiley Ogre's 58 Truk build how to put your truck year and build thread into your signature shop air compressor timer

02-12-2018, 07:03 PM	#15
raymond0275 Registered User Join Date: Jun 2017 Location: Larete Tejas Posts: 39	Re: Steering Issues Thank you all for your input, went ahead and ordered a new rack and pinion, the valves were no good inside the rack. Once again thank you..



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