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Old 12-07-2008, 04:12 PM   #1
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Power steering powered wiper motor?

While poking around an old mid 70s Revcon Motorhome I noticed that the wiper motor was not the typical one I've seen on other Motorhomes including our Classic Motorhomes.

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I had never heard of this arrangement before. Is it a dependable and reliable system? My guess is its probably a bit more expensive to install and I wonder how it would operate while turning and braking at the same time?

Just curious.

Brad
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Old 12-07-2008, 04:36 PM   #2
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Brad, How bizzzare! Charles said it should break the arms on an Icy windshield!

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Old 12-07-2008, 04:40 PM   #3
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Brad, How bizzzare! Charles said it should break the arms on an Icy windshield!

John B
I hadn't thought about the wiping power that would be involved using the power steering hydraulics. Maybe I aught to go back and pull that wiper motor!

Brad
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Old 12-08-2008, 01:55 AM   #4
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Hydraulic wipers

Hi, back in the early seventys Lincoln Mark III's had hydraulic wipers. They worked very well and had about 15 speeds. The only draw back that I found back then was the fact that on the inlet side of the wiper motor was a filter screen; Most people didn't know about the filter and when it got clogged up [very rare] the wipers and power steering would be weak.
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Old 12-08-2008, 02:05 AM   #5
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Brad, did you follow the lines to the pump? I've seen wiper motors, especially on medium duty trucks, with vacuum-powered wipers.
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Old 12-08-2008, 12:58 PM   #6
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Brad, did you follow the lines to the pump? I've seen wiper motors, especially on medium duty trucks, with vacuum-powered wipers.
Terry,

I followed the lines down to the lower left front area of the engine. The lines appeared to be high pressure lines that connected to the wiper motor. When I first saw the arrangement I thought it was a vacuum arrangement. But after looking closer at the high pressure lines and where they were routed I decided it was operated from the power steering pump.

After having vacuum wipers on my first car (1955 Olds Delta 88 Deluxe) I decided I never wanted to use vacuum wipers again, especially in the winter in Nebraska!

Brad
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Old 12-08-2008, 01:00 PM   #7
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They worked very well and had about 15 speeds.
How was the speed adjusted from inside the car?!
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Old 12-08-2008, 01:26 PM   #8
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There will be one high pressure line, and one return line, just like the power steering unit.

My 1972 Chevy "Snap-On" truck had power brakes that were powered in the same way.
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Old 12-08-2008, 02:02 PM   #9
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My 1972 Chevy "Snap-On" truck had power brakes that were powered in the same way.
Jim, do you know if that was a Hydroboost or Hydravac system? Not that it matters in this discussion, just curious.
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Old 12-08-2008, 02:21 PM   #10
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Jim, do you know if that was a Hydroboost or Hydravac system? Not that it matters in this discussion, just curious.
Yes, I think it was a Hydroboost, but I can't tell you for sure. Too many miles under the wheels since then.
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Old 12-08-2008, 02:31 PM   #11
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Just did a little search. Yes, it was a Hydro-boost. Worked just fine. They are used extensively on vehicles such as diesels which have no vacuum. My truck was gas, but I think it was used there as it could be placed sideways. The hood on that truck was very short.
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Old 12-08-2008, 02:54 PM   #12
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Just did a little search. Yes, it was a Hydro-boost. Worked just fine. They are used extensively on vehicles such as diesels which have no vacuum. My truck was gas, but I think it was used there as it could be placed sideways. The hood on that truck was very short.
My 1977 Lincoln Continental has the same system for the power brakes.

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Old 12-08-2008, 03:37 PM   #13
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My 1977 Lincoln Continental has the same system for the power brakes.

Bill
IIRC, your Continental also had something called "Anti-Skid" as an option. It was the first ABS system I am aware of, available from 1975-77 on higher-end models such as Grand Marquis, LTD Brougham, Town Car, and Continental.
Boy, we've dragged this thread way off topic, from power windshield wipers to ABS systems...
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Old 12-08-2008, 03:44 PM   #14
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IIRC, your Continental also had something called "Anti-Skid" as an option. It was the first ABS system I am aware of, available from 1975-77 on higher-end models such as Grand Marquis, LTD Brougham, Town Car, and Continental.
Boy, we've dragged this thread way off topic, from power windshield wipers to ABS systems...
Terry,

You are somewhat correct, in that I believe that the "Anti-Skid" option was available only with rear disc brakes. Perhaps standard on the Marks, since I think that they had rear disc brakes. My Lincoln has drums on the rear.

Bill
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