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06-12-2020, 08:25 PM | #1 |
Blue 67
Join Date: Apr 2004
Location: Western WA
Posts: 1,179
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How to bleed power steering pump!
Any tips as to how to bleed power steering pump?
I have replaced the pump on my Nova and I thought I know how to bleed it since I have replaced the pump on my other car/trucks but this one is giving me hard time. I changed the pump, filled the pump, car is on the lift so I turned the wheel lock to lock (engine off) 7-8 times, got some bubbles, added fluid and started the car and it whined like crazy. Stopped the engine and did the procedure again, the same story. I turned the wheel few times with the engine running after few series of engine being off, no luck. I have done this now over 10 times and still the fluid is frothy and pump whines when the engine is started. I have tightened the hose clamps for the return line just in case it sucks air from somewhere although I didn't have any leaks. Any tips? Thanks
__________________
1953 GMC 3/4 ton: current project 1967 C20: 5.3 voretc with T5 conversion, 4 wheel 8 lug disc brake 1972 Nova: my 4 door sport sedan! 5.3 voretc + T5 conversion. drivable project, FUN!! 1979 Camaro Z28: 5.3 vortec conversion with build TH350: drivable project, Fun to drive 1992 Camaro RS convertible (Z28 clone): 5.3 conversion with build T5: on going project 2005 Silverado 2500, 4x4 Duramax, original owner |
06-12-2020, 09:22 PM | #2 |
Moderator
Join Date: Aug 2011
Location: China Spring, TX
Posts: 7,280
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Re: How to bleed power steering pump!
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Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats? |
06-12-2020, 10:32 PM | #3 |
Registered User
Join Date: Jun 2013
Location: Somewhere
Posts: 3,088
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Re: How to bleed power steering pump!
I've replaced the pump, box and hoses (they say do all at once) on the truck and the Camaro. Both times I just ran lock to lock a few times with the tires on the ground, filled the res and had no issues.
I've read other posts where people had trouble so my sympathies. |
06-12-2020, 11:39 PM | #4 |
Blue 67
Join Date: Apr 2004
Location: Western WA
Posts: 1,179
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Re: How to bleed power steering pump!
Thanks guys. That is what I have been doing. It seems there are more air in the steering gear box. Is there a way to flush that? Like flushing a hydroboost?!
__________________
1953 GMC 3/4 ton: current project 1967 C20: 5.3 voretc with T5 conversion, 4 wheel 8 lug disc brake 1972 Nova: my 4 door sport sedan! 5.3 voretc + T5 conversion. drivable project, FUN!! 1979 Camaro Z28: 5.3 vortec conversion with build TH350: drivable project, Fun to drive 1992 Camaro RS convertible (Z28 clone): 5.3 conversion with build T5: on going project 2005 Silverado 2500, 4x4 Duramax, original owner |
06-13-2020, 09:26 AM | #5 | |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,943
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Re: How to bleed power steering pump!
Quote:
Just a thought. Check the valve in the pump. Make sure it's in the right way. It could be stopped up from junk in the pump from making it. Are something in the hose sucked up in it.
__________________
1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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06-13-2020, 10:22 AM | #6 | |
Blue 67
Join Date: Apr 2004
Location: Western WA
Posts: 1,179
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Re: How to bleed power steering pump!
Quote:
Thanks.
__________________
1953 GMC 3/4 ton: current project 1967 C20: 5.3 voretc with T5 conversion, 4 wheel 8 lug disc brake 1972 Nova: my 4 door sport sedan! 5.3 voretc + T5 conversion. drivable project, FUN!! 1979 Camaro Z28: 5.3 vortec conversion with build TH350: drivable project, Fun to drive 1992 Camaro RS convertible (Z28 clone): 5.3 conversion with build T5: on going project 2005 Silverado 2500, 4x4 Duramax, original owner |
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06-13-2020, 08:36 PM | #7 | |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,943
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Re: How to bleed power steering pump!
Quote:
Look at it close and put it back in in the same orientation as you took it out.
__________________
1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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06-14-2020, 06:03 AM | #8 |
Registered User
Join Date: May 2016
Location: Willow, Alaska
Posts: 881
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Re: How to bleed power steering pump!
If you have a MityVac, you can apply vacuum to the reservoir and that will help in a lot of cases.
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06-14-2020, 10:05 PM | #9 |
blood type; Retumbo
Join Date: Jan 2004
Location: next to my reloading bench
Posts: 10,269
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Re: How to bleed power steering pump!
Cardone? That explains it right there
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Man rule #77...if you own a 67 stepside with a caddy 472 you will never be in danger of loosing you man card |
06-28-2020, 09:28 AM | #10 |
Blue 67
Join Date: Apr 2004
Location: Western WA
Posts: 1,179
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Re: How to bleed power steering pump!
So, this is an update:
I had an stock power steering pump from my other LS swap which came with the donor engine. I swap this noisy rebuild Cardone with that one. I went through bleeding process (turn the wheel after installation before starting the engine,...). When I started the engine, there was no sound and I was happy. I turned the wheels few times lock to lock, got few more smaller bubbles but still no sound but as I took the car for the test drive, the sound reappeared and it seems the sound got worse as I was depressing the brake pedal ( I have a hydroboost set up: Power steering, hydroboost and the gear box). So, I took the return hose off of the hydroboost again and flushed the hydroboost but still I have the noise. Can a bad gear box or hydroboost be a factor? Gear box is original to the car (1972) and the Hydroboost is used one (late 80s chevy van). I am just confused at this point since I have changed all these different parts on many different cars/truck in the past with no such issue! Thanks
__________________
1953 GMC 3/4 ton: current project 1967 C20: 5.3 voretc with T5 conversion, 4 wheel 8 lug disc brake 1972 Nova: my 4 door sport sedan! 5.3 voretc + T5 conversion. drivable project, FUN!! 1979 Camaro Z28: 5.3 vortec conversion with build TH350: drivable project, Fun to drive 1992 Camaro RS convertible (Z28 clone): 5.3 conversion with build T5: on going project 2005 Silverado 2500, 4x4 Duramax, original owner |
06-28-2020, 03:57 PM | #11 |
Registered User
Join Date: May 2013
Location: Post Falls, ID
Posts: 896
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Re: How to bleed power steering pump!
Had some trouble bleeding a PS system once.
I was back and forth, lock-to-lock with the wheels in the air, for like an hour. Just kept getting bubbles. Someone told me to turn full-lock right and note where the steering wheel stops, then full-lock left, again noting the steering wheel position. Once you know where the steering locks, turn the wheel back and forth, stopping just short of wheel lock both directions, and never hitting the locks. The theory was that hitting the lock causes cavitation in the already frothy fluid. I don't know, but it worked for me, and I had that system bled 10 minutes later. |
06-29-2020, 06:58 AM | #12 | |
State of Confusion!
Join Date: Jul 2002
Location: Gulfport, MS USA
Posts: 46,950
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Re: How to bleed power steering pump!
Quote:
I have not had to work on one for a while, bit it sounds like there is something wrong in the power boost or in it's hook up. Your air leak into the system seems to be coming from the brakes side.
__________________
Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God! |
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06-30-2020, 12:02 AM | #13 |
Blue 67
Join Date: Apr 2004
Location: Western WA
Posts: 1,179
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Re: How to bleed power steering pump!
Thanks for the replies. I will try to bleed it again as it is suggested by Greasey H.
If I had air leak somewhere, shouldn't I have fluid leak too?
__________________
1953 GMC 3/4 ton: current project 1967 C20: 5.3 voretc with T5 conversion, 4 wheel 8 lug disc brake 1972 Nova: my 4 door sport sedan! 5.3 voretc + T5 conversion. drivable project, FUN!! 1979 Camaro Z28: 5.3 vortec conversion with build TH350: drivable project, Fun to drive 1992 Camaro RS convertible (Z28 clone): 5.3 conversion with build T5: on going project 2005 Silverado 2500, 4x4 Duramax, original owner |
06-30-2020, 12:33 AM | #14 |
Post Whore
Join Date: May 2015
Location: Alabama
Posts: 14,657
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Re: How to bleed power steering pump!
could you get a pic of how you have it all plumbed?
ive changed pump and hb on mine...never had the issues your having
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Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
06-30-2020, 10:50 AM | #15 |
Blue 67
Join Date: Apr 2004
Location: Western WA
Posts: 1,179
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Re: How to bleed power steering pump!
This is how I did it. I did my 79 Camaro the same with no issue a year ago.
__________________
1953 GMC 3/4 ton: current project 1967 C20: 5.3 voretc with T5 conversion, 4 wheel 8 lug disc brake 1972 Nova: my 4 door sport sedan! 5.3 voretc + T5 conversion. drivable project, FUN!! 1979 Camaro Z28: 5.3 vortec conversion with build TH350: drivable project, Fun to drive 1992 Camaro RS convertible (Z28 clone): 5.3 conversion with build T5: on going project 2005 Silverado 2500, 4x4 Duramax, original owner |
07-01-2020, 08:07 AM | #16 |
Post Whore
Join Date: May 2015
Location: Alabama
Posts: 14,657
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Re: How to bleed power steering pump!
That's ok....I'm not sure what you got going on
__________________
Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
07-11-2020, 10:19 PM | #17 |
Blue 67
Join Date: Apr 2004
Location: Western WA
Posts: 1,179
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Re: How to bleed power steering pump!
Fixed, finally!!
I am just posting this hopefully help somebody else since you have helped me when I need it. Thank you. So, the problem was the return lines! There are two types of power steering pumps, one with one return line which is for the cars/trucks with vacuum brake boosters and then there is one with two return lines for the cars/trucks with Hydroboost brake system. I got the two line pump since I converted to Hydroboost and I just didn't want to use a "T" on one return line. On the pumps with two return lines, the return line from the gear box which has a constant low pressure but high flow of the power steering fluid connects at the pump's gear level (or maybe even below the gears) of the power steering pump and the line from Hydroboost connects to the pump above the gears, this line has a lot less volume. Anyways, I connected my return line to the power steering pump in a wrong way. I connected the gearbox to the upper return line and the Hyrodboost to the lower one. This was causing the power steering box to ran out of fluid around the gears and as such air would get mixed with the fluid since the line from the gear box (the higher flow one) was dumping the fluid on the top of the gears in the power steering pump. It was causing cavitation and the noise. I hope this makes sense. Cheers
__________________
1953 GMC 3/4 ton: current project 1967 C20: 5.3 voretc with T5 conversion, 4 wheel 8 lug disc brake 1972 Nova: my 4 door sport sedan! 5.3 voretc + T5 conversion. drivable project, FUN!! 1979 Camaro Z28: 5.3 vortec conversion with build TH350: drivable project, Fun to drive 1992 Camaro RS convertible (Z28 clone): 5.3 conversion with build T5: on going project 2005 Silverado 2500, 4x4 Duramax, original owner |
07-12-2020, 06:42 AM | #18 |
State of Confusion!
Join Date: Jul 2002
Location: Gulfport, MS USA
Posts: 46,950
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Re: How to bleed power steering pump!
Glad you got it fixed. I have heard that getting lines wrong would cause the brakes to not work worth a darn, but never heard of your issue. One for the memory banks. Glad you are working.
__________________
Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God! |
07-12-2020, 10:25 AM | #19 |
Senior Member
Join Date: Oct 2014
Location: Eagle, ID
Posts: 3,014
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Re: How to bleed power steering pump!
Glad you got it worked out!
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