RE: [Chrysler300] Power Steering Fluid Cooler

["Richard Barber" <c300@xxxxxxx>]

Interesting discussion.  Auto manufacturers would not be expected to add an
expensive item like a power steering fluid cooler without good reason, even
if only government mandate.  Anyone aware of problems with earlier power
steering systems associated with hot fluid?  I can't imagine power steering
fluid getting any hotter than engine oil.  But it is a relatively small
volume that has energy continuously added to it by the pump.  If there was
and is a serious safety or performance problem that can be cured with a
cooler, perhaps we should consider retrofitting our older 300's and other
vehicles.

I rather like Chrysler's idea of placing the power steering pump on the back
end of the generator on the '55-'56 300's.  Fewer belts and pulleys and easy
to access.  Any problems to look forward to with that arrangement?  I know
there is a rubber shock absorber piece that connects the pump to the
generator shaft. Is that likely to "go" someday?  Any source for those?

I recently had to drain the power steering fluid reservoir on our 1955 C300
in order to get the LH rocker arm cover off and found a lot of black sludge
in the bottom of the reservoir--so perhaps the p/s fluid is
deteriorating--or the rubber hoses in the system.

Is there a known source for the filter that goes in the '55-'56 p/s
reservoir?

C-300'ly,
Rich Barber
Brentwood, CA
1955 Chrysler C-300

-----Original Message-----
From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On
Behalf Of Ryan Hill
Sent: Tuesday, July 14, 2009 11:30 AM
To: ronbo97@xxxxxxxxxxx; Chrysler 300
Subject: RE: [Chrysler300] Power Steering Fluid Cooler


My '65 300 has what appears to be a factory installed power steering cooler,
I believe it was checked on the build sheet and I have seen another '65
Chrysler with the exact same cooler. Works well, after driving well over 400
miles on a hot day (mostly highway though) the fluid was just warm. It's on
the return side so there isn't really any pressure or leaks as long as
you're using the correct hose.

Ryan Hill 


 


To: chrysler300@xxxxxxxxxxxxxxx
From: ronbo97@xxxxxxxxxxx
Date: Tue, 14 Jul 2009 11:37:34 -0400
Subject: [Chrysler300] Power Steering Fluid Cooler







Just wondering if anyone else has done this and if it's necessary. Shouldn't

the seals, etc. in the pump be able to withstand the heat that is 
transferred from the engine ? Additionally, my concern would be the 
introduction of additional hoses into the equation, which can leak or split.

Ron

>I recommend that you install a power steering fluid cooler to prolong the 
>life of the pump. We used a transmission cooler for a 2001 GMC 1500 series 
>4-wheel drive pick-up that mounted neatly to the front of the radiator yoke

>on the driver's side. We routed the hoses around the battery and through 
>existing cut outs in the radiator yoke. After driving the car for 
>prolonged periods with the engine nice and hot, one can hold the power 
>steering cooler return hose and it is just lukewarm.









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