How to work the 3 point

Simplest things first.

The PTO has to be turning in order for the pump to pump oil for the rockshaft arms. This means the clutch pulley must be turning so that the PTO shaft turns.

I don't remember if a '51 "B" has a Hi/Lo shifter, but if it does, the PTO lever is the smaller one beside that (kind of down by towards the distributor/magneto area). If no hi;lo shifter, it's the only lever to the right of the transmission quadrant. To engage the PTO, move this lever to the left (it should move about an 1/8 turn). Start engine in neutral, and engage the clutch. With the pulley turning, and the PTO lever in the engaged position, the power take off should be turning. Now with the Pow-R-Trol lever in the forward position, the rockshaft arms should raise. They go down by gravity, so if they are already up, you may not see them move. With an implement or you, standing on one of the arms, move the Pow-R-Trol lever to the rear. The arms should drop.

If not, we move to less simple causes such as not enough oil in the system, or wrong blocking tips in the P-trol box.

BTW, do you have a cylinder hooked to the tractor ? Because it will not work the lift arms and a cylinder at the same time.

Post back your results.

Frank-in-Tallahassee
70D // 855

"Open" front plugs are just that, open like a soda straw.

"Closed" ones are blocked off, i.e. solid nosed. No oil could flow into them thru the end.

Frank

So this would be like a pipe nipple with a pipe cap on it?

< "Closed" ones are blocked off, i.e. solid nosed. No oil could flow into them thru the end.

And then this would be a standard square headed, solid pipe plug? Sorry, new terminology to me...perhaps we're not talking pipe fittings?

Lee, what Frank & myself are talking about are the Power-trol adapter plugs in the R/H rear of the P/T valve body. If they are closed in the front & open in the rear with pipe threads they direct P/T oil only to the remote cylinder. If they are open in the front they direct oil to the internal rockshaft cylinder....