So I have a 77 f150 with 351m have had problems with the power steering pump it's not a sigsaw pump or whatever they'll called it's the round one. My question is can I go to another pump? Or should I try to rebuild or buy a rebuilt power steering gearbox? And see if that has been taking out my pumps.

Now for the brakes I replaced the master cylinder because I've been having issues with the brakes they go to the floor and you have to pump to stop and even then they're going to the floor. Should I start with the booster next?

 

Does your brake fluid stay full? If not check wheel cylinders for leaks. If brake fluid is full check the vacuum line and valve on the master booster. Have the brakes been bled?

 

I did bleed them they're still not great but they are better driver rear I couldn't get a perfect stream. But I think it's cause the bleeder has rust on the end of it.

 

It's prolly packed with mud/dirt. Dig it out with a paperclip as good as possible and retry. Or remove it since ya gotta re-bleed anyway and give it a good cleaning. Reinstall and bleed the rears.... you should be an expert by now.

 

First thing I would do is pull the wheels and do a visual inspection of all four wheels. If all looks good, then next would be to make sure the rear drums are adjusted correctly. Drum brakes that are out of adjustment will cause the symptoms you describe.

 

'65-'77 PS pump would be a Thompson 'pencil neck' pump -- round metal reservoir with a small diameter dipstick/filler tube.

The Thompson 'pencil neck' PS pump will look like the one pictured on the engine in this early Mustang.



In 1978, Ford discontinued the Thompson pump and switched to the Ford CII (C-2) pump. This style pump has the plastic reservoir with the large diameter filler neck. It was in use through about 2003. I installed this style pump on the 240 in my '69 F100 Ranger.



Mounting brackets are specific to the pump --They don't interchange between pump types.

If you get a PS pump from the parts store, just bolt it on, hook the lines up, throw a belt on it, fill it with fluid and then bust the engine off, the pump will likely whine and not last last very long.--air (cavitation) damages the pump before the pump mechanism stays covered in PS fluid.

The PS pump and power steering system needs to be primed and the air purged from it --BEFORE the engine is cranked. This is easily accomplished with a variable speed drill and a 3/8" hex bit engaged into the tip of the pump shaft. The idle speed of an engine is much higher than slowly turning the pump with a variable speed drill.

 

Did you bench bleed the master cylinder? I'd check the drum adjustments as well.

 

since you have a 351m you could go to the c-2 pump if you got the bracket off a newer 351m but you would need the proper lines for the c-2 pump.

 

1965/77 Ford/Thompson P/S pump has a steel reservoir, the P/S pressure hose threads onto the pump.

1978/98 Ford C-II P/S pump has a plastic reservoir, the P/S pressure hose connects to the pump with a qwik connect fitting.

 

The C-II pump has a threaded fitting for the pressure hose. It does have an O-ring seal rather than the double-flare fitting from the older pump, but I can't think how it would be called a "qwik connect"?

 

It's more of a swivel fitting. --at least it is on the '82 C-2 pump I have in my '69.

 

Yes, it swivels and has an O-ring seal rather than a flare fitting. But it also definitely threads in rather than being a quick-connect. Both my Ford vehicles have them - my '01 Cobra and my '74 F-100 (with early-80s accessory drive). I just installed my pressure hose a couple weeks ago on the truck.

 

Yep, agreed. I installed a Saginaw PS Box and C-2 PS pump/brackets in my '69 back in November. The hose end threads into the fitting on the side of the PS reservoir but, no quick connection to it.

 

I've been saying the same thing since 1978, maybe I should use a different description.

Here's the C-II P/S pump qwik connect fitting that the P/S pressure hose threads into.

 

Yeah, we're talking about the same thing I guess ... quick connect terminology just made me think of something like this: