Tom.H Posted May 2, 2015 Share Posted May 2, 2015 Hello I’ve just fitted a 10 row power steering cooler to my rear engine Tomcat. I’ve fitted the cooler on the lower pressure side between the reservoir and the power steering pump. Since fitting the cooler and starting the engine the pump make's a horrendous sound and the reservoir overflowed. The symptoms lead me to believe the cooler is restricting the flow to the pump. Is this just down to fitting to smaller cooler or should I have plumbed the cooler between the steering box outlet and reservoir? Thanks Tom Quote Link to comment Share on other sites More sharing options...
Daan Posted May 2, 2015 Share Posted May 2, 2015 I think your pump cavitates. You definitely should plumb it in after the box and before the reservoir. Daan Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted May 2, 2015 Share Posted May 2, 2015 Yep, after box on the low pressure return line. Quote Link to comment Share on other sites More sharing options...
Rangy35 Posted May 3, 2015 Share Posted May 3, 2015 As above, the pump is cavitating, and as above between the steering box and reservoir, you need to cool the oil after its used for its job and before it goes into the reservoir. Nice cooler, you also increased the volume of the oil, so there is more to go around and will last longer. Quote Link to comment Share on other sites More sharing options...
tacr2man Posted May 3, 2015 Share Posted May 3, 2015 where the cooler is fitted has had no relevance to what happened when you started , eg overflow etc , as you have aerated your fluid , its just a question of how you go about starting and filling , short run/operation to bleed the system and then stand to allow separation the cooler should definitely be on the return line , as will not be rated for line pump to box pressure Quote Link to comment Share on other sites More sharing options...
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