JD 1050 hydraulics problem

[Barry 1]

The early ones came with a 9cc pump(CH11272) with key and nut to hold adapter on.That CH15662 is NLA . If you look under sectional in the parts,the second pump#94 is a CH13990 (11cc) same as the one used on all newer tractors 11001- It shows it for the 11001- but you don't have any other choice but to get the adapter and see if it will work,or go back with the 9cc pump.I would think it will work.
Looks like if you get the CH13991 adapter and the CH13992 snapring you will be in business.
My early model had the 9cc pump,until I had the dealer installed power steering added,with the 11cc pump upgrade.

 

[mikedn@cox.net]

The early ones came with a 9cc pump(CH11272) with key and nut to hold adapter on.That CH15662 is NLA . If you look under sectional in the parts,the second pump#94 is a CH13990 (11cc) same as the one used on all newer tractors 11001-
Looks like if you get the CH13991 adapter and the CH13992 snapring you will be in business.
My early model had the 9cc pump,until I had the dealer installed power steering added,with the 11cc pump upgrade.

welp... i went out to the barn and dug the old pump out... I see a problem right off the bat... The old pump mounts to four bolts on the engine which extend out about 2 inches from the block.

The new pump's flange will allow it to mount to the two engine bolts, but the other two bolts are too short to pass thru the pump housing.

How difficult is it to remove the engine bolts and replace them with two longer grade 8 bolts?

 

[Barry 1]

Hard to say.Put 2 nuts on one of them(Metric) tighten them together real tight,then try to unscrew it with a wrench on the inner nut.If that won't do it,it's vice grip time,and hope they aren't froze up. Parts shows that both early and late use those studs,but late model only uses 2,and 2 -CH19093 bolts(M8X100)
Looks like everything else is the same,even the gear that the pump sticks into is the same(CH10237)

 

[mikedn@cox.net]

yeah... more afraid of snapping them off than anything else... then I'd have to haul the tractor somewhere and have the front end disassembled and drilled out.

 

[Barry 1]

Did you take your old pump apart to see if anything is wrong with it? You might have something else wrong,like a stuck open pressure relief valve?

 

[mikedn@cox.net]

Did you take your old pump apart to see if anything is wrong with it? You might have something else wrong,like a stuck open pressure relief valve?

Didn't disassemble the pump, I have an older 9cc pump and wanted to upgrade to the 11cc pump anyway. I previously had checked all my connections for leaks, and the relief valve, and nothing appears remiss there.... just get the chattering any time I place a load on the hydraulic system. Hydraulic system has, in the past, squealed under load, so I figure replacing the pump was a good start. Just strange that the problems happened after my mechanic removed the screen to clean it and replace all the hydraulic fluid and filter.

I loaded up the studs coming out of the engine in the engine w/ PB Blaster, I'll let it sit a few hours and see if I back them out w/o snapping them off. that would really, really suck. They look like they're in pretty decent shape though.

 

[mikedn@cox.net]

Mission successful. Studs extracted. Additional parts ordered from Deere... now to wait another week till the parts show up....

 

[mikedn@cox.net]

Hate to revive one of my old threads, but I find myself in a pickle once again on my hydraulics.

Over the summer since my last post, I did replace my existing hydraulic pump with the new high capacity pump. This had a good (but not great) effect... My hydraulics worked, but still chattered slightly under load. I used the deere a few times over the summer to move some rocks and use the backhoe without difficulty, although not as great as it once was (pre service).

Life happened, and as life goes, the deere sat unused for several months as other priorities came to the forefront of my existence.

Well, living in new England, we're now slated to get a major nor'easter, so I thought I would move the deere into a location where I can use the loader to plow out the driveway (since the loader was working, for the most part, after the pump replacement).

murphy's law dictates naturally that the hydraulics are once again not working.

Today's symptoms: liquid appears milky but not milky contaminated, more milky from tons of micro-bubbles in the fluid. I have no lift whatsoever. In fact, I can take the bucket off my quick mount and physically move the pistons in and out of the cylinders by hand. Attempted to warm the fluid by lowering the 3-point after shutting the valve under the seat... no effect, no hoses got warm. Fluid level on dipstick does, though, appear full/normal. Backhoe inoperable as well. Disconnected backhoe from hydraulic system, no improvement.

Any thoughts on where I go from here now? I hate to arbitrarily replace the fluid, since the Hygard low viscosity will run me ~150 for the 6 gallons I need to refill the system if I drain it... but if I must, I must.

I'm not overly mechanically inclined when it comes to hydraulics on a tractor, so be gentle with me

Thanks, Mike

 

[PHIL850]

sounds like your pump is sucking air. I would check your return lines to the pump (suction side)

 

[beenthere]

I'm curious how you managed the nor'easter when it came, and piled on since then too. ??