Help with power steering bleeding - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**yellowblazer1969** · 03-10-2009, 09:48 AM

I am about to install a new power steering pump on the 72 blazer today and i was wondering about the correct way to bleed the system of air when the install is finished. Any info would be appreciated, also if i am going to a newer steering box with the quick ratio will the length of the arm need to be shortened or lengthened?

Thanks in advance for the help

68gmsee · 03-10-2009, 09:55 AM

All I've ever done is fill the pump reservoir and turn the steering wheel from one extreme to the other couple of times. I check the fluid and repeat until it stays full.

If there's another way, I'm not familiar with it.

**special-K** · 03-10-2009, 10:07 AM

Just don`t fill pump about 1/2 way,then work the wheel alot.The air bubbles out into the pump.Then,just slowly top off.If you just fill it you`ll puke fluid.

tim21391 · 03-10-2009, 01:36 PM

i had to replace a line and i just filled pump up left cap off and turned the wheel...after i was sone it still growled... the mechanic at work said to jack up front end to get pressure off fornt tires then turn the wheel..... it worked for me that way

cdowns · 03-10-2009, 01:51 PM

i've always done it with wheels off the ground too

greygoose · 03-10-2009, 02:40 PM

lol why can't breaks be that easy,just press the peddle a couple of times and top off

BluTrukker · 03-10-2009, 02:41 PM

I have never tried this with my truck, but it works on military hummers. They use a GM pump so it probably would. turn the wheel all the way to the right and hold it against the stop. Shut the truck off and walk away. After about an hour, or overnight if you can, come back a try again, if it still has air in it go to the left and repeat.

**yellowblazer1969** · 03-11-2009, 11:25 AM

Thanks for the help everyone i will let yall know how it turns out.
thanks, cris

1968SWBBigBlock · 03-11-2009, 12:44 PM

If you replace both you may have instructions to flush the box and the pump - I did this by using my cordless drill - an arbor and an old pulley & belt rather than having the truck running.
You have the pressure side hose off so it flows into a drain pan -- I could just see a big mess trying to do this while the truck is running.
Regarding your arm length - they will stay the same - the QR is all handled by the internal components in the gear box

1968SWBBigBlock · 03-11-2009, 12:44 PM

Make sure you buy a new rag joint when you change your box

**mr48chev** · 03-11-2009, 01:35 PM

When I was working on them on a daily basis I found that having the front wheels off the ground and turning the wheel lock to lock several times worked fine to get the air out.
If you haven't put fluid in it yet go to the local GM dealers parts counter and get Genuine GM powersteering fluid. When I was working in the dealerships it always seemed to work just a little bit better than the parts house stuff. Otherwise get the best quality fluid you can find.

monte0185 · 03-11-2009, 02:09 PM

Quote:

Originally Posted by cdowns

i've always done it with wheels off the ground too

X3!! always works fine. Just turn the wheel back and forth a few times and your good to go.

**yellowblazer1969** · 03-12-2009, 05:22 PM

can i get a little help regarding, bleeding the steering box as well, i decided to do both at the same time. i didnt completely get the previous how to about the box itself

thanks, chris

03-10-2009, 09:48 AM	#1
yellowblazer1969 Registered User Join Date: Jul 2004 Location: columbia sc Posts: 387	Help with power steering bleeding I am about to install a new power steering pump on the 72 blazer today and i was wondering about the correct way to bleed the system of air when the install is finished. Any info would be appreciated, also if i am going to a newer steering box with the quick ratio will the length of the arm need to be shortened or lengthened? Thanks in advance for the help

03-10-2009, 09:55 AM	#2
68gmsee Active Member Join Date: Jul 2007 Location: Centrally located between Houston, Austin and Waco. BCS area. Posts: 7,947	Re: Help with power steering bleeding All I've ever done is fill the pump reservoir and turn the steering wheel from one extreme to the other couple of times. I check the fluid and repeat until it stays full. If there's another way, I'm not familiar with it.

03-10-2009, 10:07 AM	#3
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: Help with power steering bleeding Just don`t fill pump about 1/2 way,then work the wheel alot.The air bubbles out into the pump.Then,just slowly top off.If you just fill it you`ll puke fluid. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

03-10-2009, 01:36 PM	#4
tim21391 Registered User Join Date: Jul 2007 Location: Salina, Kansas Posts: 1,998	Re: Help with power steering bleeding i had to replace a line and i just filled pump up left cap off and turned the wheel...after i was sone it still growled... the mechanic at work said to jack up front end to get pressure off fornt tires then turn the wheel..... it worked for me that way __________________ 1972 C-10...402/400..flowmaster 40 series 1967 Mustang 347 stroker/C-4 1966 Mustang 289/3-speed 2013 Mustang V6/6speed w/300 ponies I may be 23, but i sure do knows 67-72s are sexy! Its not MPG its smiles per gallon! build started 11/25/08 build thread: http://67-72chevytrucks.com/vboard/s....php?p=2993796

03-10-2009, 01:51 PM	#5
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: Help with power steering bleeding i've always done it with wheels off the ground too __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

03-10-2009, 02:40 PM	#6
greygoose Registered User Join Date: Mar 2008 Location: N.C. Posts: 250	Re: Help with power steering bleeding lol why can't breaks be that easy,just press the peddle a couple of times and top off __________________ If it ain't a chevy,I don't want it

03-10-2009, 02:41 PM	#7
BluTrukker BOHICA Join Date: Mar 2008 Location: Stewartville, MN Posts: 440	Re: Help with power steering bleeding I have never tried this with my truck, but it works on military hummers. They use a GM pump so it probably would. turn the wheel all the way to the right and hold it against the stop. Shut the truck off and walk away. After about an hour, or overnight if you can, come back a try again, if it still has air in it go to the left and repeat. __________________ Trying to save someone from their own stupidity is like teaching a pig to dance. It is a waste of your time, and it annoys the pig!

03-11-2009, 11:25 AM	#8
yellowblazer1969 Registered User Join Date: Jul 2004 Location: columbia sc Posts: 387	Re: Help with power steering bleeding Thanks for the help everyone i will let yall know how it turns out. thanks, cris

03-11-2009, 12:44 PM	#9
1968SWBBigBlock Active Member Join Date: Oct 2006 Location: Ohio Posts: 1,643	Re: Help with power steering bleeding If you replace both you may have instructions to flush the box and the pump - I did this by using my cordless drill - an arbor and an old pulley & belt rather than having the truck running. You have the pressure side hose off so it flows into a drain pan -- I could just see a big mess trying to do this while the truck is running. Regarding your arm length - they will stay the same - the QR is all handled by the internal components in the gear box __________________ 1968 SWB 454 + .040, 490HP x 540 FT pounds of Torque 10-1 Kb Forged pistons, recon rods w/ ARP wave loc bolts 781 heads Ported with 2.19/1.88 SSTvalves Lunati 60204 cam, Micro Trol lifters, Ported Edelbrock Performer Rpm manifold armor coated, Pertronix Triple Strike Ignition Holley 770 Street Avenger carb,Headers armor coated Built by Watson Ruppel Performance in Sarahsville Ohio. Hardshift Tranny Built Turbo 350,TSI 10" 3000 stall 12 Bolt Eaton Posi 4.10 Richmond Gears moser axles 18.5" x 31" Hoosier Pro Street Radials ET Classic 5 Wheels - polished Power Steering, Power Brakes,Disc Brakes,Tach & Gauge Dash, Tilt,Factory Air (gone) Custom Paint & Body Work Special thanks to my wife, my son and my money tree

03-11-2009, 01:35 PM	#11
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,705	Re: Help with power steering bleeding When I was working on them on a daily basis I found that having the front wheels off the ground and turning the wheel lock to lock several times worked fine to get the air out. If you haven't put fluid in it yet go to the local GM dealers parts counter and get Genuine GM powersteering fluid. When I was working in the dealerships it always seemed to work just a little bit better than the parts house stuff. Otherwise get the best quality fluid you can find.

03-12-2009, 05:22 PM	#13
yellowblazer1969 Registered User Join Date: Jul 2004 Location: columbia sc Posts: 387	Re: Help with power steering bleeding can i get a little help regarding, bleeding the steering box as well, i decided to do both at the same time. i didnt completely get the previous how to about the box itself thanks, chris Last edited by yellowblazer1969; 03-12-2009 at 05:22 PM.



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