Plow attachment

lstinthot · Jan 11, 2015

Thanks for the info. We will keep that in mind and find some way to secure it better to the center of the cross support if we end up needing it to float side to side more. Might have to weld a hook on to it. Right now it is run to the outside holes. This will be used mostly on gravel so it will have to be off the ground most of the time unless the rocks are frozen good. It will be a learning curve.

PILOON said:
Very similar to how I rigged a plow to my Mitsubishi some 8-10 years ago.
Parallel to the ground and FEL for lift.
Most truck rigs use only one chain except for big highway rigs. (they use a V cable from each side of plow and lift from the center using a pulley for central lift)
I am sure you are safe to use the center of your FEL cross tube for lift (as your pix shows) as in fact there is no strain other than the weight of the plow.
Actually 2 lift points would be counterproductive as you want that plow blade to follow contours of the ground otherwise you'd find corners might dig in.
Big rigs actually use a swivel plate so that the blade contours no matter which way the truck might lean.(also why the V cable lift)

On small rigs they rely on slop in the lift pin holes. (like 3/4" pins in 1" holes)

Nice build!.

lstinthot · Jan 15, 2015

Hydraulic hoses arrived and we were greeted with failure. The hoses were connected to the quick disconnects where you would disconnect the front bucket with 90 degree fittings on the plow. Started up the tractor and the blade moved some, then all hydraulics stopped.

Could this be air bound? Wouldn't it be able to work out a little air left in the cylinders. Lines were not vented before trying to move left and right.

Reconnected lines to loader and nothing is working now. Is there a bleed valve somewhere on the 790?

Thanks in advance

PILOON · Jan 16, 2015

Your new hoses were empty so the pumps first job was to fill the hoses which they did partially and then ran out of fluid.
Top up the hydraulic reservoir and you should be good.

At least that's one theory.
Generally purging, priming is not required as the pump simply circulates the oil and only oil gets pumped.

lstinthot · Jan 16, 2015

PILOON said:
Your new hoses were empty so the pumps first job was to fill the hoses which they did partially and then ran out of fluid.
Top up the hydraulic reservoir and you should be good.

At least that's one theory.
Generally purging, priming is not required as the pump simply circulates the oil and only oil gets pumped.

Well it turns out the hoses were not hooked up right. Works great. Now on to the next project.