landkeeper Posted June 10, 2010 Share Posted June 10, 2010 the power steering on one of my friends trucks is very notchy and noisy its a 4 bolt box and a v8 with what looks like a normal v8 pump , it whines if the wheel is turned whilst stationary and the steering wheel is very lumpy in operation , there is plenty of fluid in the system any ideas b4 i start changing pumps and boxes for him Quote Link to comment Share on other sites More sharing options...
jbs Posted June 11, 2010 Share Posted June 11, 2010 I would check the steering UJ's on the shaft from the steering column to the box-as they do wear, then I would also bleed the system until all the air was out of it if this has'nt cured it then you'll maybe have to change the box for another serviceable unit HTH John Quote Link to comment Share on other sites More sharing options...
simonr Posted June 11, 2010 Share Posted June 11, 2010 Air in the system is my vote! Si Quote Link to comment Share on other sites More sharing options...
zim Posted June 12, 2010 Share Posted June 12, 2010 Agree with simon, air is in the system. Open the bleed screw ontop of the steering box and let the air out as you turn the wheel Gordon Quote Link to comment Share on other sites More sharing options...
TheRecklessEngineer Posted June 12, 2010 Share Posted June 12, 2010 Then you have to answer the question of why there is air in the system - I'll put money on power steering pump seals. Quote Link to comment Share on other sites More sharing options...
jbs Posted June 12, 2010 Share Posted June 12, 2010 Or it possibly wasn't bled properly in the first place? John Quote Link to comment Share on other sites More sharing options...
landkeeper Posted June 12, 2010 Author Share Posted June 12, 2010 mmmm it was ok till a few weeks ago fluid is frothy in the reservoir alright +now ive cleaned off the top of the box it's oozing from the top adjuster Quote Link to comment Share on other sites More sharing options...
jbs Posted June 13, 2010 Share Posted June 13, 2010 Thats possibly where the air's getting in then! tightening it down will shut off all air getting to it surely Quote Link to comment Share on other sites More sharing options...
garymorris Posted June 13, 2010 Share Posted June 13, 2010 Mine went notchy the other week and it was the u.j , it had seized solid but at least a u.j is a lot cheaper than a pas box Gary Quote Link to comment Share on other sites More sharing options...
simonr Posted June 14, 2010 Share Posted June 14, 2010 Mine went notchy the other week and it was the u.j , it had seized solid but at least a u.j is a lot cheaper than a pas box Gary If it were just 'notchy' then UJ's are favorite. If it's notchy and makes a whining noise and/or the fluid is frothy / pink - then it's air in the system. Air can be sucked in from several places. Pump seals are possible - but other than on 300 tdi, the pump is contained in a can filled with oil so even if the seals leak, it doesn't leak air. The front shaft seal on the pump is usually high pressure so oil leaks out rather than air in (although no doubt there are exceptions). Usually it's the pipe unions between the pump and reservoir leaking. In your case, it's almost certainly the adjuster nut. The chamber below is high pressure when you steer one way and low pressure the other so it can both suck and blow. Si Quote Link to comment Share on other sites More sharing options...
DrRob Posted June 22, 2010 Share Posted June 22, 2010 I had notchy steering. Sprayed UJs on steering shaft liberally with WD40 and it fixed it! Bought new complete column from MailOrder4x4 to fit ...UJs can be bought separately but I went for the easy option Quote Link to comment Share on other sites More sharing options...
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