Hydraulic constant pumping

M

mixedbag

Well-Known Member
New sprayer here requires hydraulics to be on constant pumping. Is there a correct way to put the hydraulics on an MXM 120 ( same as newholland tm controls) into constant pumping other that wedging the hydraulic lever in position?

If not, do any lads have a neat way of locking the Spool lever in constant pumping?
 
mixedbag said:
New sprayer here requires hydraulics to be on constant pumping. Is there a correct way to put the hydraulics on an MXM 120 ( same as newholland tm controls) into constant pumping other that wedging the hydraulic lever in position?

If not, do any lads have a neat way of locking the Spool lever in constant pumping?
Click to expand...
Just out of curiosity is this hard on the tractor being in constant pump?
 
I’m told no it’s not hard on tractor, as have a free flow return, but honestly don’t really know
 
f140 said:
Just out of curiosity is this hard on the tractor being in constant pump?
Click to expand...
No, as long as there's no restriction and turn the spool down so you only have the amount of oil that's needed, there's no point pumping 50l/min round if the machine only needs 15l/min.
 
Run the Tecnoma on constant flow with a ccls Massey ,as Win says the flow is turned away down and returning through a free flow return it is still fast enough for any of the sprayer functions on the minimum flow handy enough with the levers being able to lock in any position.
 
You can get a kit to keep the lever in constant pumping, we had it fitted to a TM. The tractor that is usually on the sprayer doesn’t have it so I use an old bicycle tube attached to the floor of the cab and the other end of it wound around the lever tight enough to hold it in constant pumping. It’s also slack enough to allow the lever stay in neutral when on the road and filling.As @Win said be sure to slow down the flow to what you need to operate the sprayer.
 
mixedbag said:
New sprayer here requires hydraulics to be on constant pumping. Is there a correct way to put the hydraulics on an MXM 120 ( same as newholland tm controls) into constant pumping other that wedging the hydraulic lever in position?

If not, do any lads have a neat way of locking the Spool lever in constant pumping?
Click to expand...

Mmmm I would check to see if you can get power beyond retro fitted, we ran our TM 140 on a seperator and a spud harvester with spools in constant pumping, should of got the PB sorted,, when the oil gets hot it gets very hot and did most of the internal oil seals, and she's had the pump done once since,
There's usually a good reason why a spool won't stay in constant pumping for "ever" under a heavy load,,,
That said don't know how heavy a demand a sprayer would place on a hydraulic circuit ???
 
The actual load would be very small, all it’s doing is adjusting boom height and tilt while your spraying, as well as the boom folding/unfolding
 
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