Login Register

How to bleed air from power steering system

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

Post Reply
User avatar
SuperHerman
Posts: 1798
Joined: 1 December 2014
Year and Model: 2004 & 2016 XC90
Location: Minnesota
Been thanked: 207 times

Re: How to bleed air from power steering system

Post by SuperHerman »

Check your hoses on the reservoir to make sure they are tight. You should not be getting foaming - that indicates air in the system.

Bleeding any air should not take but one cycle run.

User avatar
misha
Posts: 5379
Joined: 7 December 2008
Year and Model: '97 850 2.5 20v
Location: Serbia
Has thanked: 152 times
Been thanked: 402 times

Post by misha »

June wrote: 30 May 2018, 08:06 Cycle the wheel all the way both ways before starting the car in the morning before the fluid becomes foamy. Check the level before starting as well. That was the process for Ford's many years ago and it worked. June
Don't do that with power steering!
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS

User avatar
misha
Posts: 5379
Joined: 7 December 2008
Year and Model: '97 850 2.5 20v
Location: Serbia
Has thanked: 152 times
Been thanked: 402 times

Post by misha »

SuperHerman wrote: 30 May 2018, 13:10 Check your hoses on the reservoir to make sure they are tight. You should not be getting foaming - that indicates air in the system.

Bleeding any air should not take but one cycle run.
Air in the system is completely normal after flushing.
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS

User avatar
Danonly55
Posts: 85
Joined: 3 May 2018
Year and Model: 1996 850 sedan
Location: AZ
Has thanked: 23 times
Been thanked: 4 times

Post by Danonly55 »

Ok I started the car this morning and just rested the cap of the sump on top. I cycled the wheel back and forth slowly in full direction. I tightened cap and drove her for about 20 minutes and noticed as it got hot the slight jerkyness was still present.
I will top off sump and repeat tomorrow. I will update my results.
2014 Ford 3.5L ecoboost XLT
1995 Volvo 850 wagon GLE

Life is tough, but it's tougher when your stupid'
" John Wayne

User avatar
misha
Posts: 5379
Joined: 7 December 2008
Year and Model: '97 850 2.5 20v
Location: Serbia
Has thanked: 152 times
Been thanked: 402 times

Post by misha »

It will disappear ...unless wrong fluid didn't messed something up...but i doubt it.
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS

User avatar
SuperHerman
Posts: 1798
Joined: 1 December 2014
Year and Model: 2004 & 2016 XC90
Location: Minnesota
Been thanked: 207 times

Post by SuperHerman »

As I understand the OP's situation is s/he has already changed the fluid and tried cycling a few times. S/he is still having problems. Usually foaming at this stage is air entering into the system from one of the reservoir bottle hoses.

Other possibility based on OP's last post "jerkyness" present could be a bad rack or PS pump. First OP has to eliminate fluid levels and hoses.

OP - prior to doing any work - how did the system function?

User avatar
Danonly55
Posts: 85
Joined: 3 May 2018
Year and Model: 1996 850 sedan
Location: AZ
Has thanked: 23 times
Been thanked: 4 times

Post by Danonly55 »

The system functioned well with no jerkyness" I will check the fittings on the reservoir in the morning. If air is entering the system then I should see fluid leaking from the only hose I removed, that was the return line.
2014 Ford 3.5L ecoboost XLT
1995 Volvo 850 wagon GLE

Life is tough, but it's tougher when your stupid'
" John Wayne

Post Reply
  • Similar Topics
    Replies
    Views
    Last post