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Matt
Matt, Mechanical Engineer
Category: Jaguar
Satisfied Customers: 21091
Experience:  BEng hons Mech engineering, in auto industry 22 years
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I have Daimler 1990 xj40 4.00 with power steering problems

Resolved Question:

I have Daimler 1990 xj40 4.00 with power steering problems viz:virtually impossible to turn steering wheel and when raised off ground turns relatively freely but not effortlessly.There is NO loss of fluid.I've loosened hose from bottom of pump and no fluid coming through.I've put in another pump with same result.The steering rack runs freely and ball joints ok.Any ideas please?
Submitted: 1 year ago.
Category: Jaguar
Expert:  Matt replied 1 year ago.
Hello I'd suggest jacking the car up so the front wheels are both off the ground then move the road wheels from lock to lock feeling for tight spots as you go If there are none then the all the joints are fine and then I'd suspect that you may have a faulty steering rack where the proportioning valve is clogged or siezed in which case I'd suggest sending the rack off to this firm for repair http://www.power-steering.co.uk/
Customer: replied 1 year ago.
Hello Matt.Thank you for your initial suggestion.However I have jacked up car and road wheels turn but not without effort.The ball joints seem to be in good condition .I still suspect that even the second pump is faulty as having loosened the flow from bottom of the pump I would have expected a considerable flow of oil when in fact there is zilch.I have purchased an exchange pump from SNG Barrett.At the moment I have not been able to fathom out how to remove the shaft as I have been unable to find a suitable tool for what looks a bit like a grommet.Is there a special tool or procedure required to remove? Regards James
Expert:  Matt replied 1 year ago.
Hello James do you mean the steering shaft ? or the drive shaft for the pump?
Customer: replied 1 year ago.
drive shaft for the pump.thanks
Expert:  Matt replied 1 year ago.
Hello there's a special tool for this ( naturally)The tool looks like a steering wheel puller with two legs that fit exactly in the two rectangular slots in the cog. It pushed on the shaft and pulled on the cog. Installation then uses a threaded rod that fits into the center of the shaft while the other part of the tool pushes on the cog
Customer: replied 1 year ago.
Thanks for that Matt,do you know where said tool can be obtained?Regards James
Expert:  Matt replied 1 year ago.
Hello this firm sells themhttp://www.ukjag.org.uk/index.php?route=product/category&path=83 or http://www.spx.com/en/power-team/pc-pullers/
Expert:  Matt replied 1 year ago.
do you still need help?
Bear in mind that the site takes a deposit from you at the beginning and this is held by the site until you rate my answer at which point the cash is split between the site and the expert. so if my answers have been helpful please rate my answer.
Customer: replied 1 year ago.
Hello,neither of the people suggested are able to supply the special tool,however I have found a Jaguar dealer who has been able to remove the shaft with a bolt and press.It would seem that there is nothing wrong with the pumps or rack.The problem would seem to be that the centre bolt going into the engine has snapped and needs to be drilled out and renewed.That is scheduled to be done next week.I'll keep you updated.Regards James
Expert:  Matt replied 1 year ago.
hello James thats a new one, thanks fo rletting me know and glad ot hear that you got to the bottom of it
Customer: replied 1 year ago.
Hello Matt.I haven't given you a rating yet as the problem hasn't yet been solved as the car is booked in for the coupler bolt to be replaced later on this week.I appreciate that this is the first time that you have come across this possible solution but I am rather surprised that you hadn't picked up on my earlier remarks about the total lack of oil going through the pump when the hose was slackened off ( obviously not pumping).When I get the car back I will advise you of the outcome as already promised.Regards James
Expert:  Matt replied 1 year ago.
understood James and yes I should have mentioned the lack of pump drive, didn't occur to me to do so as when you started asking about pulling the pump apart I assumed that was going to be replaced as the next course of action
Matt, Mechanical Engineer
Category: Jaguar
Satisfied Customers: 21091
Experience: BEng hons Mech engineering, in auto industry 22 years
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