Saginaw upgrade for a 3b (1 Viewer)

[cruisedeisel]

Well I have been following the thread in the 60's section on how to upgrade your power steering pump for a 2f gasser.

I have obtained a saginaw pump from a 90's chevy pickup. I will find a way to mount it and connect all the hose's with as much detail as I can pass on.

If you have 33" tires or bigger and have any kind of locker in your front end. You should know that the stock yota PSP sucks when your hubs a locked.

I hope this can help and shed some light on all with a 3b. Note that I am using a 3b that has power steering already. If you are setting up a 82 and prior 3b without power steering. You will need the PSP bracket, pulley from the pump and alternator since the alternator is slightly different.

 

[cruisedeisel]

Well its a tight fit, hood still closes. I will have to make a custom alternator adjusting bracket. Also there is some mounting to do on the back of the saginaw, which I will incorporate the alternator bracket. Looks to me like the pump is nicely lined up top the crank shaft pulley and tension pulley. I drilled out the toyota pulley to the saginaw shaft. no pics

 

[cruisedeisel]

Still have my engine covered in mud from the outing a few months back. 2 brackets, 4 holes and 2 tapped. 4 spacers. Some grinding required on the stock mount.

 

[kowalski]

Nice looking mount!

Ever thought of cleaning your motor?

Congratulations on getting it that dirty in the first place though.

 

[cruisedeisel]

Ya, I should by a tripod or a new camera. Sorry for the crappy pics.

 

[cruisedeisel]

Nice looking mount!

Ever thought of cleaning your motor?

Congratulations on getting it that dirty in the first place though.

I clean my air cleaner and replace the oil. Isn't that clean enough! HA!

 

[cruisedeisel]

And for all of you with hawk eyes. The pump is just sitting there. So yes it is slightly crooked.

 

[gerg]

I like the oil cap chain....now spray some oil on that engine so it looks normal, some of the metal is showing!

 

[cruisedeisel]

I like the oil cap chain....now spray some oil on that engine so it looks normal, some of the metal is showing!

Oil cap chain was from the previous owner. Still not attached to anything. lol Hey at least I wiped down the PS bracket and pump before I started working on it.

 

[cruisedeisel]

Don't mind the dirt, its on the inside that counts.

 

[cruisedeisel]

I took a few short cuts. lol The saginaw power steering pump had some weird o-ring style compression fitting thats not relevant to anything in the hydraulic industry so I took a stock line a put a double flare to a brass union. I also welded the pulley to the pump shaft. I know, I know. Cutting corners. I also had to modify the alternator adjusting bracket to adapt to the saginaw pump for adjustment. All in all I would give myself 7 gold stars out of 10.

Unfortunately the new pump still doesn't want to turn my tires with the hubs locked in on pavement. So the next step will be to take out a shim in the valve body which will increase the pressure. I haven't taken her out wheeling yet but I imagine that it will be better than before. Crossing my fingers.

 

[cruisedeisel]

And if all fails I will be continuing this thread with a hydro assist. I will win this battle.

 

[cruisedeisel]

I forgot to mention that I cut the stock return line on the pump off flush to the back of the pump. I had the local radiator shop solder and new 90 on. The stock return line was interfering with my design.

Total costs= 30 for return line solder
25 for the the double female brass fitting and double flare at the hydraulic shop.
10 for ATF
PS pump was free from a friend, came with the high pressure line I modified.

Engineering it yourself. Infinity more satisfying.

 

[cruisedeisel]

Forgot about my $15 return line.

Total costs 70.

 

[cruisedeisel]

There is a good write up on how to modify these pumps on pirate.

What’s going on inside a PS Pump … - Pirate4x4.Com : 4x4 and Off-Road Forum

 

[cruisedeisel]

Maybe I should have put this thread in the hardcore section. It seems like everybody doesn't care to have any input. What a one sided thread, I thought PO would be all over this conversion.

 

[cruisedeisel]

Gonna have to start buying parts and putting more chrome on my truck to get anybodies attention. FML

 

[cruisedeisel]

Modifying your Power Steering Pump - GM Truck Central

I have followed this thread to increase my pump to max pressure of 1400. Removed The main fitting followed by the flow piston and spring, stretch the spring to 2.25 inches and put a washer to shim the spring in the flow piston. I also ground down the limiting stud. He said to remove the spacer between the end cap and flow piston body but mine didn't have any. Re-assembly and test tomorrow.

 

[cruisedeisel]

I was going to drill out the main fitting to 5/32" but the fitting was already the size he recommends. The end cap screen was fairly pluged with small metal fillings. hmmm? Well I cleaned out the screen and I will assemble today and test out. Hope I don't start blowing hoses and seals. Crossing my fingers.

 

[cruisedeisel]

On my first test the power steering didn't work at all. FML

So I took everything apart again. I noticed that the spring inside the flow piston was completely compressed in when I reassembled it. SO I decided to add one shim the end cap off of the flow piston.

Test number 2.... Fire my truck up, jacked up the front end to bleed the system. Turned the steering while back and forth a bunch, it still didn't feel any different and then..... The saginaw pump just seemed to grab the fluid, engine hesitated and then everything started working. Dropped my truck back down to the cement. Turned the steering wheel and voila.

The final test of locking in my hubs and trying lock to lock on pavement. Everything works!!! Wahoo!!!!