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That is indeed a Ford Thompson. The pumps are all the same what makes them specific to a certain vehicle is the reservoir and the bracket for the pressure hose. All the ones I have, have metal tanks on them. For that reason most rebuilt ones do not come with a reservoir. I would not buy one of those online the rebuilds a notoriously poor quality and you could end up having to exchange a couple before you get a good one. Go to a local parts house that loans tools because you are going to need a special tool to remove and reinstall that pulley anyway.
The picture shows some of the differences in the reservoirs. Those are all from 1971 model cars the two on the left side are from 351 Clevelands and the one on the right from a 429.
The (TRW) Thompson PS pump came out in 1965. Initially ('65/'66), the stamped steel reservoir housing on it had a wide filler neck. This PS pump replaced the Eaton remote reservoir PS pumps Ford had previously used.
Eaton remote reservoir PS pump (shown below) used up until 1965 when the Thompson pump replaced it.
In 1967, the filler neck was redesigned and this style pump got the nickname 'pencil neck' pump. This version of the Thompson PS pump was produced from 1967 through 1977 (when it was replaced in '78 by the Ford CII (Corporate-2) PS pump with a plastic reservoir housing and a large filler neck).
'67-'77 Thompson 'pencil neck' PS pump.
There was also a Thompson PS pump, plumbed with an extra fluid return line for hydroboost brakes, that was used on the '77 Lincoln Versailles.
The Thompson PS pump was replaced by this C-2 PS pump in '78. (C-2 PS pump from an '82 F150 inline 300 on the inline 240 in my '69 F100 Ranger).
There was also a version of this C-2 pump plumbed with an extra fluid return line for use with hydroboost brakes from the late '90s Super-Duty trucks.
That is s Ford Thompson pump it was used from the 60's to the early 80's on many Ford applications. No Ford/Thompson P/S pumps were installed after 1977.
1965/66: Ford/Thompson P/S pump (1965/66 misc. cars & 1966 F100/250 2WD) had a much larger filler neck and dipstick than...
Has a steel reservoir, P/S pressure hose threads onto the pump.
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1978: FoMoCo introduced the new C-II P/S pump, installed on most everything well into the 1990's (and beyond for some) except Econolines & 1978/79 cars with Hydro-Boost.
C-II pump has a plastic reservoir, P/S pressure hose connects to the pump w/a qwik connect fitting.
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Eaton P/S pump: 1953/64 (edit: except M-E-L engines w/Vickers Drive pump) & some 1965/66 Passenger Cars (mostly 200/289 Mustang/Falcon/Fairlane/Comet).
Depending on applications, the separate reservoir was either mounted on top of the pump or remotely mounted on the left fender inner apron.
To complete the photo gallery of Thompson power steering pumps, here is the 65/66 large neck reservoir with AC. It is farther aft and angled to clear the AC compressor (obviously wasn't available on our trucks).
There are a couple of differences between the 65/66 and '67 up power steering pumps. The most obvious is the stud that protrudes through the reservoir used to support the rear of the pump on the early design. The inlet is also different internally although it has the same diameter and thread pitch as the later pencil neck pump.
To further confuse all this. If your reservoir is bad and you can't find one that fits you can use the CII pump on the Ford Thompson bracket. Dimensionally the pumps are the same, as far as bolt spacing and shaft size. It's not a direct bolt on but there is very little involved with getting it to fit. I had to switch to a CII because of interference with the headers. But there again, crappy rebuilds. This is the 3rd pump I got before I got a good one. The first one I rejected at the parts counter because of too much play in the shaft the second one had a bad pressure relief and would nearly lock up at 2000 rpm but this one seems to be a good one.
To further confuse all this. If your reservoir is bad and you can't find one that fits you can use the CII pump on the Ford Thompson bracket. Dimensionally the pumps are the same, as far as bolt spacing and shaft size. It's not a direct bolt on but there is very little involved with getting it to fit. I had to switch to a CII because of interference with the headers. But there again, crappy rebuilds. This is the 3rd pump I got before I got a good one. The first one I rejected at the parts counter because of too much play in the shaft the second one had a bad pressure relief and would nearly lock up at 2000 rpm but this one seems to be a good one.
Sort of off topic but what did you use for your black chassis paint ?
It was all sandblasted and primed with Rust-Oleum primer then two coats of Rust-Oleum semi gloss black. The stuff is slow to cure but after about a month it will resist about anything except brake fluid. Plus it's way easy to fix if you ding it.
... you can use the CII pump on the Ford Thompson bracket. Dimensionally the pumps are the same, as far as bolt spacing and shaft size. It's not a direct bolt on but there is very little involved with getting it to fit. I had to switch to a CII because of interference with the headers.
When you look at the two pumps, you'll see that the C-II pump is a different shape than the Ford/Thompson pump.
Since FE engines were cancelled after 1976, there are no P/S pump mounting brackets that will fit the C-II pump.
There are other engine size brackets used 1977 and earlier that won't fit the C-II pump either.
You missed the OP's point Bill...
Originally Posted by Crop Duster
To further confuse all this.
If your reservoir is bad and you can't find one that fits you can use the CII pump on the Ford Thompson bracket. Dimensionally the pumps are the same, as far as bolt spacing and shaft size. It's not a direct bolt on but there is very little involved with getting it to fit. I had to switch to a CII because of interference with the headers.
06-17-2017, 05:15 PM
on many Ford applications.
