1980 - 1986 Bullnose F100, F150 & Larger F-Series TrucksDiscuss the Early Eighties Bullnose Ford Truck
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The truck is a 1986 F250 4x4 with the 300 six and a 4-speed.
My PS cooler line sprung a leak so I fixed that but now I've got no PS at all. I had power assist when I started to bleed (wheels up, steering lock to lock). I was parking when the line went and I lost assistance, so the pump wasn't run dry.
Have I missed a detail of the bleeding sequence or did my pump coincidentally go up at the same time?
Plenty of fluid, belt is fine, no noises...just no assist.
I had a similar problem with my p/s after both box and pump were rebuilt. Long story short, it turns out that the shaft in the pump is disengaging from the pump rotor. The whole shaft and pulley work its way forewards until it disengages - then no ps, push it back in and it works. I assume some bonehead left the c-clip off the end of the shaft where it goes thru the rotor when it was being put back together.
I have never had one stop completely. Usually they are just noisy and the oil is all foamy when they have air in them, but they still work. Getting all the air out is a problem with Fords, and I believe the dealers had a vacuum device they fit over the reservoir to try to get it all out. But like I said, that's just to reduce the pump noise, otherwise they still work.
Take the line off the steering box and also the belt off the pump, and see if when you turn the pulley by hand, you get oil out of the pressure line.
Well thanks all. Sounds like I haven't missed anything. Guess the pump went up at the same time.
I did splice a hose over the bad section of the hard cooler line (since nobody carries this piece) but I can't imagine that would cause a problem since there's already flexible hose in the return line.
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