| High PS oil temps [message #325439] |
Thu, 26 October 2017 01:00  |
Hal StClair
Messages: 971
Registered: March 2013
Location: Rio Rancho NM
Karma: -12
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Senior Member |
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I was running the rescue coach today and noticed the hydraulic lines at the wiper motor were too hot to touch. The coach was just sitting idling long enough to bring things up to operating temperature so the steering hadn't been moved. I wonder if a dirty filter @ the wiper motor could cause something like that? Any ideas from the brain trust here?
Thanks, Hal
"I enjoy talking to you. Your mind appeals to me. It resembles my own mind, except you happen to be insane."
1977 Royale 101348,
1977 Royale 101586, Diesel powered,
1974 Eagle Bus 45',w/slideout,
Rio Rancho, NM
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| Re: High PS oil temps [message #325443 is a reply to message #325439] |
Thu, 26 October 2017 08:44  |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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Senior Member |
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As easy as it id s to get off, I'd pull the filter and check it. I never held onto the lines on my coach (but now I'm gonna) to see how hot they get. I note, however, a lot of newer cars have an outboard cooler in the steering pump line. You might could get one to fit in a coach. Indicates to me that they do get hot.
The wipers worked great on the coach I sold. They don't work great on the current one. They do one swipe and stop. Turn them off and let them park and rest and they will do one more swipe. Since the steering seems OK, I suspect I'm up for a wiper motor. The electrics are nice, but I use the wipers so infrequently I don't find it worth the effort... if I can get the stock ones going.
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: High PS oil temps [message #325449 is a reply to message #325439] |
Thu, 26 October 2017 10:43 |
roy1
Messages: 2126
Registered: July 2004
Location: Minden nevada
Karma: 6
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Senior Member |
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You don't want that system too get to hot or the seals in the pump and steering box will start leaking. When I first bought my coach they were cooked. I found a finned cooler off an old Pontiac that I. Installed in the return line that kept things cooler but Yes check the filter.
Roy Keen
Minden,NV
76 X Glenbrook
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| Re: [GMCnet] High PS oil temps [message #325466 is a reply to message #325449] |
Thu, 26 October 2017 22:55 |
powerjon
Messages: 2446
Registered: January 2004
Karma: 5
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Senior Member |
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The late model Cadilac’s have a very good plate cooler on the power steering system and it comes in several sizes. I have been running a cooler on our coaches since 2000. The power steering system being a closed loop system, the pump can generate a fair amount of heat in the fluid.
http://www.gmcmhphotos.com/photos/member-galleries/p63885-power-steering-upgrade.html
The Picture show a Ford unit that I got a number of years ago.
JR Wright
GMC Great Laker MHC
GMC Eastern States Charter Member
GMCGL Tech Editor
GMCMI
78 GMC Buskirk 30’ Stretch
1975 GMC Avion (Under Reconstruction)
Michigan
> On Oct 26, 2017, at 11:43 AM, roy keen wrote:
>
> You don't want that system too get to hot or the seals in the pump and steering box will start leaking. When I first bought my coach they were cooked.
> I found a finned cooler off an old Pontiac that I. Installed in the return line that kept things cooler but Yes check the filter.
> --
> Roy Keen
> Minden,NV
> 76 X Glenbrook
>
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J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
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