Ford 340 (1980) Hydraulic bucket control failure

   / Ford 340 (1980) Hydraulic bucket control failure #11  
#47 is splined to the pump and #48 bolts to the crankshaft pulley. Check both of these.
 
   / Ford 340 (1980) Hydraulic bucket control failure #12  
Yes, that's it. Hopefully, you didn't lose a U-joint.
 
   / Ford 340 (1980) Hydraulic bucket control failure
  • Thread Starter
#13  
Yes, that's it. Hopefully, you didn't lose a U-joint.
I have not had time to turn a wrench yet, but I did see a solid shaft from the crankshaft nose end to the back of the pump. I marked a line, and it rotates with the motor. Put a pipe wrench on it and I could rotate the motor.

This leaves me with seeing if the pump splines are stripped between the solid shaft and the backside of the pump..... However, I think I will crack open the main hydraulic line to the bucket control valve, and see if I get a decent spray when the motor fires up.

Sound like a decent plan? or should I look at something else first?
Thanks in advance!
 
   / Ford 340 (1980) Hydraulic bucket control failure #14  
Pull the kill cable out when you do this. You don't want to have the engine start and have a "decent spray" come out if one does come out or you may be showered in oil.
 
   / Ford 340 (1980) Hydraulic bucket control failure
  • Thread Starter
#15  
Pull the kill cable out when you do this. You don't want to have the engine start and have a "decent spray" come out if one does come out or you may be showered in oil.
Yeah.. I planned on doing that... "planned"...

I finally had time to tinker with it. Double checked the pump shaft. Tight & turns the motor over. No shavings at the splines at the back of the pump.

So I assumed the pump was good. The next thing in the line was the auxiliary valve. It's a valve sitting on the outside right of the tractor that would use quick connects for something like a side street brush or whatever? After that aux valve, it goes into the lift/bucket valve.

"Planned"
I disconnected the supply hose to that aux valve. Put the hose into a sleeve to a bucket. Fired up the tractor, but forgot to keep the shutoff pulled. VROOOOM.. it fired up and hyd fluid shot everywhere. Good news, it has pressure. Bad news, 2 bags of Oil Dri used up.

I unhooked the input pressure side on that aux valve and went to the local Parker store to get a fitting to connect that input hose to the input of the lift/bucket valve. I bypassed the aux valve.

It's working now. It was that aux valve that controls misc quick change implements on the side of the tractor. (Its previous life was a highway construction tractor)

As far as this aux valve. I'll never use it. May as well trash it?

Anyway.. I really appreciate the help and advice here. I wanted to give you a follow-up on the adventure.
Thanks!!!
 
   / Ford 340 (1980) Hydraulic bucket control failure #16  
"And now you know the rest of the story"
The auxiliary valve was the unknown in this puzzle. Glad you found your problem and got it going. Bypassing the aux valve completely is smartest considering its new life
 

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