3600 hydraulic pump leaking

Ultradog MN

Well-known Member
Location
Twin Cities
My tractor is leaking engine oil from somewhere around the side mounted hydraulic pump. This is the gear type pump with the filter on it. I'm certain it is engine oil (color) and I do have to add oil to the engine on occasion.
It's hard to see where the leak is coming from but it seems to be getting worse.
The bolts that attach the pump are tight.
Before I pull the pump off I wonder if there's a place that's known to leak - other than the gasket.
Any ideas?
Thanks
 
I have a recently purchased 3910 and it's obvious the PO replaced the pump, specifically which pump I haven't checked, within the 900 hrs of it's use. It's on the right side of the main hyd. housing, about 8-10" in diameter, just about in the location where the hyd flow valve is located on my 3000....near my right heel with a foot on the brake pedal. There is a ?" union, about 2" long, vertical, on top of the pump that appears to be the outlet connecting to the hyd system.

I too have a leak and it appears that my leak is a result of that piece of pipe, threaded on both ends, wasn't tightened properly. A quick look at it doesn't show me any quick/easy way to tighten the connections. If it gets worse I'll have to look into what and how.
 
Ultradog - It's not leaking fro the valve cover gasket up above and dripping down to where the pump is, is it?
 
Thanks Sean.
No it's not from above. It would have to
flow down the head and I'd see that
pretty easily.
I guess I'll pull the pump off and look.
Have an extra gasket here.
Getting it ready to bring up north for my
spring plowing tomorrow so doing a bit of
maintenance on it.
Adjusted the clutch. And brakes - brakes
needed it badly. Greased it. Checking it
all over. You guys know the drill...
 

That pump has 2 o-rings behind plugs, one in front for the pump drive gear and one behind under the gear pump for the idler gear.
I haven't figured out how the attach links but you can find them in the 3600 hydraulics section 10A02, part # 13 & 16.
Those gears are lubricated by engine oil.
 

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