Gear box

[Big_John]

So.... How can you identify a truck pump? If the pump in the donor truck had been replaced etc.

 

[66/440]

Might want to take a look at this article
http://www.moparaction.com/Tech/beep/PUMP_IT_DOWN-re-v1.4.pdf

 

[1978 NYB]

So.... How can you identify a truck pump? If the pump in the donor truck had been replaced etc.

I had an article that ID'ed pumps. I'll find it sooner or later.

You're right if someone replaced the pump could of replaced it with the over pressured one which would of been very unacceptable on the road.

 

[66/440]

My understanding is that using the spring from a six cylinder pump will reduce the pressure at which the bypass valve opens and reduces line pressure to the steering box.

BTW there is a company in Missouri that will rebuild your box and reduce the number of turns lock to lock. He just did one for me and it works great.

 

[66/440]

I had an article that ID'ed pumps. I'll find it sooner or later.

You're right if someone replaced the pump could of replaced it with the over pressured one which would of been very unacceptable on the road.

Identification of the pumps:

• Federal – pressure hose comes out the front of pump, and tapped hole in the end of the pump shaft.
• Saginaw – pressure hose comes out the back of the pump.
• TRW/Thompson - has a hex-shaped hole or no hole in the end of the pump shaft. pressure hose is in same location as Federal pump.