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How-to

1986 Ford Bronco Saginaw Power Steering Pump Swap

1986 Ford Bronco · Swap · Moderate

Documented by SuperMotors from Ryan McCormick’s photos

Ryan McCormick's photos cover a 1986 Ford Bronco power steering pump swap: comparing the original, Ford HD and Saginaw pumps, building a pump from the HD canned-ham case, an ARG Saginaw pump and a rotatable output so the stock Bronco high pressure hose still fits, and how the pump bolts on. The photos do not show hose connection, filling or bleeding, so this is an outline of what he documented rather than a complete procedure.

  1. Step 1

    Compare the three pump options before choosing a combination: the original pump, the Ford HD pump and the Saginaw pump, paying attention to how the outputs differ. Ryan McCormick used the center HD casing with an ARG Saginaw pump installed, because the HD output is rotatable and fits the stock Bronco high pressure hose, and notes the adapter can be bought on its own and added to the "canned-ham" case.

    Left: original pump. Center: Ford HD pump. Right: Saginaw pump. Notice the outputs, i use the center HD casing and installed an ARG saginaw… (1986 Ford Bronco)

  2. Step 2

    Obtain the Saginaw bracket. Ryan McCormick notes it is found on vans, or can be ordered as part # F4UZ3C511A for around $45-$50 at a local dealer.

    Saginaw bracket on the Left, found on vans. Or part # F4UZ3C511A for around $45-$50 at your local Dealer (1986 Ford Bronco)

  3. Step 3

    Compare the pumps from the rear, then build the combined pump. Ryan McCormick notes the Saginaw pump output points straight back while the original pump output goes to the framerail. His annotated photo explains the case swap: two small bolts hold the pump in the case along with the high pressure outlet. Unscrew the outlet from the back of the case; a small shaft and spring fall out, so save and clean them. Separate the case from the pump with a rubber mallet. There are three rubber O-rings between the case and the pump, and he says to line them up and tap the new case on carefully, trying a few times to get it right, then bolt together. He adds that the two bolts differ between the two Saginaw pump types but are both short.

    Rear view of both pumps. notice the Sag pump output is straight back, while the original pump goes to the framerail. (1986 Ford Bronco) Directions on Case / Pump replacement (1986 Ford Bronco)

  4. Step 4

    Compare the stock Bronco high pressure hose against the stock van return line. Ryan McCormick used the stock Bronco high pressure hose because it is better routed by the frame and engine.

    Top: stock Bronco hp hose. Bottom: stock van return line. I used the stock Bronco HP hose which is better routed by frame and engine. (1986 Ford Bronco)

  5. Step 5

    Rotate the output on the assembled pump so it aligns with the direction the hose runs.

    This is a shot of the back of MY pump. The output is rotatable to align with the hose direction. (1986 Ford Bronco)

  6. Step 6

    Note how the van high pressure line enters the steering box as a steel line at a right angle, with the return line entering the rear of the pump reservoir. Ryan McCormick points out how awkwardly that van line sits around the steering box, which is the routing this combination avoids.

    Van high pressure line enters steering box (steel line at right angle). Also visible: return line entering rear of pump reservoir. (1986 Ford Bronco) Here's how the stock van high pressure line sits around the steering box. Notice how ackward it is. (1986 Ford Bronco)

  7. Step 7

    Remove the old pump and set the new pump in place. Both pumps bolt to the heads plus one bolt on the water pump.

    Old pump removed, new pump ready to go in. They both bolt to the Heads and one bolt on the water pump. (1986 Ford Bronco)

  8. Step 8

    Assemble the final pump from the older can, the ARG super pump and a rotatable output so the stock high pressure hose can be used. Ryan McCormick presents this combination as his own opinion on how the swap is best accomplished.

    This is MY Sag pump. I used the Older can, the ARG super pump, and a rotatable output. I can use the stock high pressure hose. This is my o… (1986 Ford Bronco)

  9. Step 9

    Compare the finished installation against other Broncos running the same swap: one mounted on a 5.0L with a pulley to drive a York onboard air, one on a 1982 4.9L using the HD case with the high pressure outlet rotated for the stock hose and a stock V pulley, and one on a 5.8L with a stock pulley and canister. The album's photos end here and do not cover hose connection, filling or bleeding.

    Mounted on 5.0L Bronco, this one has the pully to drive a York onboard air. (1986 Ford Bronco) Another mount on a 1982 4.9L Bronco. This one has the HD case, notice how the high presure outlet was rotated and using the stock hose. Sto… (1986 Ford Bronco) Another mount on a 5.8L Bronco, with stock pully and canister (1986 Ford Bronco)

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