Wow, the stars must not be in alignment for me. Had all sorts of issues re removing the old pulley from the old pump until you buddies set me on the right track. Many thanks in that regard. Now, for the rest of the story....

I've installed a rebuilt pump from AutoZone. New pressure and return lines. Installed a Redhead steering box last year. After filling with fluid I began the bleeding process. Raised front of truck and did 5-10 turns multiple times with engine off, then with engine cranking and finally with engine running. Of course, added fluid as needed after each step. Everything fine until the last step. No assist at wheel with engine running. Immediately shut down and checked under hood. Power steering fluid everywhere. Checked all connections and hoses. All good. Assuming it burped out of fill port? I couldn't find the fill capacity of the reservoir initially . Ending up putting in a quart plus of fluid that gave me up to the fill marker before the problem. Did I overfill? Very little fluid now in reservoir. Have you buddies run into anything similar? Guess it could be a bad pump. Had to start the xxx pulley crap all over again. Maybe I'me doing something wrong. Pressure line to correct port.

BTW, please accept my mutual respect to all fellow veterans on this memorial day. Tks..Tks...Tks...


p.s. was going to install a new mechanical oil pressure gauge with the power steering pump out of the way.. what size is that old pressure switch? Could it be 1 1/16th?

 

Sorry, forgot the obvious details needed. Truck is a 74 f100 with 360 auto, 2wd. All stock, metal power steering pump reservoir.

 

Maybe take it a little slower, I had a burping PS during the "bleeding" cycles and just slowed down (20-30 lock to lock with wheels up, checking the fluid every 10), (20-30 lock to lock with engine running, checking fluid every 10).

(Redhead instructions):

 

Have you tried it this way? https://www.ford-trucks.com/forums/1...l#post14696832

Entry #4.

 

Will try again tomorrow. No rush. I left the filler cap out during bleeding under the theory the air needed some place to exit. Maybe I need to try with the filler cap on.

Other input welcome...

 

Yes, (77&79 F250) that is exactly how I bled it. But, I may have found the problem. I can be a dufus. Silly me, I used power steering fluid. I found a source indicating the pump should be filled with auto trans fluid (type f). Sound right? If so, I will siphon whatever I can out of the pump tomorrow and put in auto trans fluid. Hopefully the blend of whatever I can not get out with the auto fluid will not be an issue.

My experience with this truck over the last few years has given me deep respect for the long timers. Knowledge comes from education and experience...

 

I ve read recently that there are some pumps which need F-Type ATF and some not.
How to decide the correct way?

 

OK. Project complete. Many times we don't hear the final result so I decided to close off this treads with the final insight. I followed the bleeding procedures provided earlier and didn't rush anything. Changed over to transmission fluid. Think the biggest step was installing the cap on the pump. I initially thought it needed to be left off to let the air being bleed out to escape. When I looked closely at the cap it has a double seal with room for air to escape when sealed. This is probably a duh for old timers and good mechanics but it was not initially obvious to me. Enjoy the laugh. Ya gotta laugh at yourself at times.

 

People go to war over which fluid to use. Most say Type F. The manual for my 77 gives an engineering number different from the transmission fluid.

I looked up both engineering numbers: one is for power steering fluid and the other is for hydraulic fluid. Neither was Type F

The concensus seems to be that power steering fluid is ok, but Type F is better.

When I changed the pump in my 79, I used NAPA power steering fluid. It's always kind of whined, but works.

I'll likely flush it, (someday) and refill with Type F