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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17380   
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Do you mean with the vehicle stationary or when the vehicle is moving in gear with the engine idling? If the former, then it is not surprising and is something that you really shouldn't be doing. If the latter, you may be making steering movements which are too quick for your road speed and hence scrubbing the tyres, which will make the steering appear heavier. What tyres do you have? |
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17th Jul 2022 10:46am |
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| Dinnu Member Since: 24 Dec 2019 Location: Lija Posts: 3414  
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Although should avoid turning the steering when vehicle is stationary (as it puts a lot of stress of the system, especially with wider, under inflated tyres), the power steering should still be capable of doing it.
When rolling, the forces of the steering get much lower. So I suspect either of the two: 1. Power steering pump is not able to deliver enough pressure at low rpms 2. Steering box have too much leakage between the actuating piston that is not able to provide assistance when the flow rate is low. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing 2012 90 CSW, 2.2TDCI, Santorini Black |
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17th Jul 2022 12:00pm |
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| E13 Member Since: 17 Mar 2022 Location: Bournemouth Posts: 4 
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When stationery. I've tested it and regardless if it's in gear or not the steering is still heavy. If I raise the engine revs a bit it suddenly returns to "normal" and is much easier to turn. I don't tend to select neutral when I'm moving and haven't noticed any steering issues when driving normally. I should also clarify, this problem has developed since I've owned it, steering was fine when I first got it. Also, to head off the inevitable; no I have not made any steering mods or changes. Not sure on the tyres, will have to check when I'm home, but it's on the standard boost alloys. |
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19th Jul 2022 8:45am |
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| E13 Member Since: 17 Mar 2022 Location: Bournemouth Posts: 4
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Should I try bleeding the pump first or just consider replacing it? |
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19th Jul 2022 11:52am |
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| Leamreject Member Since: 19 Dec 2020 Location: Middle Earth - Leamington Spa Posts: 970  
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Check the fluid level… pumps are normally self bleeding with a few lock to lock turns to help it bleed Ride like you stole it!!
If I’m not on a bike it’s because only a 4x4 will do… 2011 2.4 Puma 90 HT |
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19th Jul 2022 12:17pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17380
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The steering will be heavy even if you have PAS if the vehicle is not moving. On tickover there is insufficient hydraulic pressure for the PAS to have much effect. Increasing the engine speed increases the PAS pump speed and hence the pressure, result, the steering effort is reduced. It really isn't a great idea to turn the steering with the vehicle stationary (on any vehicle) however. It can put a massive load on steering components, it will scrub the tyres, possibly rip up the tarmac or terrain you're on, and is generally unnecessary. |
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19th Jul 2022 1:06pm |
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| E13 Member Since: 17 Mar 2022 Location: Bournemouth Posts: 4
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Fluid level is good
I get what you are saying and understand why, however it has never been an issue on any of my previous cars. I usually only move the steering while stationary when doing a 3 point turn. But that is probably beside the point as this is a problem that has developed since I've owned it, so something has changed/broken to cause this. |
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20th Jul 2022 6:24pm |
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| Dinnu Member Since: 24 Dec 2019 Location: Lija Posts: 3414
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Maybe get someone to check the pressures. Then you can see if it is the pump or the box.
https://workshop-manuals.com/landrover/def...stem_test/ 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing 2012 90 CSW, 2.2TDCI, Santorini Black |
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20th Jul 2022 7:21pm |
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| Jeebs Member Since: 23 Oct 2015 Location: North West Posts: 197 
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Is this your first defender?
If so, the defender steering system isn’t like a normal car, it’s more like a truck with a chassis mounted steering box rather than a rack. A box will either have recirculating balls or some other arrangement which is unlike a rack and pinion system. Just a thought if you’re new to Defenders? |
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20th Jul 2022 8:14pm |
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| Bowbearer Member Since: 12 Aug 2022 Location: Norfolk Posts: 170 
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hello,
been visiting for ages just reading but saw this and thought you needed a decent answer. Check the belt tension on the pump. The belt is behind the alternator belt. you can tighten it by loosening two bolts on the pump and levering it using the square hole. The bracket that holds the pump on holds the alternator too and the bolts can become loose. check these. the one on the front of the bracket is delicate and should be torqued up properly. Hope this helps. |
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12th Aug 2022 10:22am |
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| Mo Murphy Member Since: 01 Jun 2008 Location: Letchworth Garden City, Herts Posts: 2227 
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If it's a Defender 200 Tdi then the correct belt tension should be to have 12mm of deflection.
Mo The Land Rover 90 - Many are called, few are chosen. 50 Shades of Pennine Grey |
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12th Aug 2022 10:45am |
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