Log Splitter 2-Stage Pump repair

Scotty370 · Sep 6, 2009

I have a Northern tool 11GPM pump that's leaking from the shaft end. It' a 5/06 manufacture date Model 1012. Looks just like this one:

Haldex Hydraulic Pump 11 GPM, 2-Stage, Model# 1001689 | Pumps | Northern Tool + Equipment

Anyone had one of these apart, and can give me a clue as to what to expect if I attempt bearing/seal replacement? TIA ~Scotty

Scotty370 · Sep 9, 2009

KennyD / J_J- Can't help me with this? Or is it just not worth the effort, and I should 'spring' a $129- for a replacement? TIA. ~Scotty

J_J · Sep 10, 2009

I have never had one of those apart, but it should be a matter of separating the motor and replacing the seal or bearing as required. Some rebuilds work and others keep on leaking. Do you have the break down on the pump? If not, maybe Surplus Hydraulics or Northern will send or fax you a break down.

J_J · Sep 11, 2009

Scotty,

Is your pump leaking when cold of hot, and is it leaking with no load or only with load.

Did you ever take it a part and replace the seals. You an get an idea on how much leakage, by tying a napkin on the bottom of the pump. After the pump has run for an hour, check how saturated the napkin is.

Scotty370 · Sep 13, 2009

J-J- I loaned it out to two differents friends. The first one worked it 'pretty good' for a couple weeks. The other was just an over-nighter! When I got it back, it's leaking just sitting in the driveway! The tank is a little higher than the pump, the unit was warm, and it left quite a puddle in short order. Now that I think about it, I topped it up with the only Hydro Oil I had handy before I sent it out the second time (JD Low-Vis). Maybe I'll just change out the filter & oil, before "wrench-time"!!!!!!

kennyd · Sep 13, 2009

Sorry Scotty...I have never taken one apart either. Buy hey-What do you have to loose? go for it!

J_J · Sep 14, 2009

I don't know if the viscosity of the oil has anything to do with the leak, but I think that regular engine oil would work just fine. All the Power-Tracs, and a lot of commercial large equipment, and Zero turns, use 10W-40 engine oil or synthetic oil as the hydraulic fluid.

Scotty370 · Sep 17, 2009

Brief update- Unit off machine. Definate 'slight' play at shaft end bearing/seal. Certainly the culprit! Oh great! Torx-headed bolts! Eight of them on the far end! A seven mm six-point just barely fits, but I know I'd round them off. Now just where do I go to get a Torx socket, that I'll probably never use again......

~Scotty

Scotty370 · Oct 5, 2009

Well, opened it up! Found a ten-piece set of e-sockets for less than $20- at TSC! Not much inside to fear, no springs etc. Just gotta watch for some small o-rings, and one woodruff key. Biggest concern is the two gaskets that are in between the three sections! Man, there're the thinnest foil I've ever seen! One red, one gold. Got the seal knocked out, and pulled out the bearing using a 1/4" theaded rod with a fender washer on one side, and a washer that was just a whisper shy of the bearing OD on the other. Walked it out with a 1/4-20 nut. Installed in the reverse fashion. Got the parts, bearing, seal, and internal snap-ring from a local bearing house for ,<$10-! All back together, I'll mount it this weekend! We'll see!!!!!

~Scotty

Bad Pics, Sorry, Still miss that simple resizing function that I had on my last computer. But I guess that wouldn't help the focus, in the second pic!

6sunset6 · Oct 6, 2009

What did you do about those foil gaskets? I took one apart once and could not get replacements for those gaskets . I think they are like shims and set the clearances.

Scotty370 · Oct 6, 2009

I'm not sure about the clearance issue you mention. They're probably some cross material between foil and mylar. All I know is they're super thin, and I took great care not to 'bugger' them up, and reused them! ~Scotty

Scotty370 · Oct 27, 2009

Well- Back together and running fine! No leaks! Another thing of the "Me-Do" list! That other "Do" list just never stops.........~S

Scotty370 · Nov 1, 2009

OK guys.............guys...........? are you out there??? Thing runs great, but, after my latest repair, the detent just barely holds in both directions. My valve is a Cross (?), that has detent in both the forward, and retract positions. Where is the detent adjustment? I see two possibles, the 'Acorn' nut in the front, the 'Cap' in the back. Any help? J_J, KennedyD? TIA ~Scotty

J_J · Nov 1, 2009

I have only used the Prince log splitter valve. The thing to do if you don't know which one, is to back out the nut/screw a 1/4 turn at a time and see what effect it will have on the relief or detent. Did you mess with any parts on the valve?

kennyd · Nov 1, 2009

Scotty370 said:
OK guys.............guys...........? are you out there??? Thing runs great, but, after my latest repair, the detent just barely holds in both directions. My valve is a Cross (?), that has detent in both the forward, and retract positions. Where is the detent adjustment? I see two possibles, the 'Acorn' nut in the front, the 'Cap' in the back. Any help? J_J, KennedyD? TIA ~Scotty

What valve is it Scotty?

Scotty370 · Nov 2, 2009

No, J_J, I just split the unit open, and replaced the shaft end bearing and seal. I did nothing else, except drain and renew the hydro oil, and replace the filter. I will just barely hold in 'detent' in forward and reverse. Seems to be a little better when it warms up. I know that the Safety Police say that it's dangerous to have a 'forward' detent, but I find it very useful, especially when working alone. Kenny- It's an old Cross valve thats probably 30yrs old! Model number unk! ~Scotty

kennyd · Nov 2, 2009

Scotty370 said:
Kenny- It's an old Cross valve thats probably 30yrs old! Model number unk! ~Scotty

Cross's website SUCKS, and I can't find any instructions even for the new valve witch I bet are the same...The acorn nut is probably the PRV (pressure relief valve) setting, the cap should have the balls in it to provide the detent feature.

J_J · Nov 2, 2009

Scotty370

I just posted in another area, about the new double log splitter valve where both levers detents when pushed forward. The log splitter, splits to the stop, and does an auto reverse, and stops for the next cycle

Scotty370 · Nov 2, 2009

J_J-Can you post a link for that fully auto (two lever) valve? I searched for 'auto return' log splitter valves, and all I come up with are valves that are detented in retraction, not the one you described. Thanx! ~S

kennyd · Nov 2, 2009

Scotty370 said:
J_J-Can you post a link for that fully auto (two lever) valve? I searched for 'auto return' log splitter valves, and all I come up with are valves that are detented in retraction, not the one you described. Thanx! ~S

Here you go:
Prince 9-6587