Mounting Hydraulic Pump on 129 stub-shaft

Gregory · #1 11-25-2011, 02:56 PM

I'm getting ready to start a loader project for a 129 and looking for some options for mounting a pump. Has anybody in this community mounted a hydraulic pump under the seat, powering it off the transmission output stub-shaft. I'm considering doing so for I don't believe that there is enough room to directly couple this to the front of the crankshaft used for the PTO (which has since been removed). I was thinking about using the trans port, but found that it does not produce enough flow.
Any idea ?

Greg

Methos · #2 11-25-2011, 04:33 PM

Quote:

Originally Posted by Gregory

I'm getting ready to start a loader project for a 129 and looking for some options for mounting a pump. Has anybody in this community mounted a hydraulic pump under the seat, powering it off the transmission output stub-shaft. I'm considering doing so for I don't believe that there is enough room to directly couple this to the front of the crankshaft used for the PTO (which has since been removed). I was thinking about using the trans port, but found that it does not produce enough flow.
Any idea ?

Greg

Greg :Welocme2:

I've seen pics of someone running the loader pump off the back of the hydro pump. Most run them off the front pto. There is a forum member that is going to run his off the drive shaft side of the motor and use the NF hydro pump location to mount the pump. To use the hyrdo pump you'd need to use a shaft to the rear of the tractor to give your self enough room. To use the front pto most mount it under the tractor but I've seen one where the pump ran off the left side under the exhuast port.

If you got the skills and tools or the cash you can make it work.

greasemonkey · #3 11-25-2011, 05:59 PM

I don't know much about you tractor, but I have a 122 NF and I will be mounting mine off the front of the engine either using the S/G belt or off the front pto belt. There is about 4" of room from the belt axis to the grill, I was also conteplating putting it on top of the S/G since I have a dipstick that comes off the cam cover. It would tuck in there nicely, but then I would be able to use a second gas tank as a hydrauic resevior.

Either way, I would try and keep the pump a live pump, so when ever the engine is running you have hydraulic power.

Gregory · #4 11-25-2011, 09:26 PM

Methos, I've seen a pic of the running the pump off the hydro shaft also, but can't find it again. As for running off the front PTO Shaft, that was my original idea, but I don't suspect there is enough room, without mods. Although I rebuild engines, weld and do some light machinist work as a hobby, I'm not about to cut part of the crankshaft to solve this problem.
With that said and with my limited experience with FEL's, I purchased the CAD plans from PF engineering. I would prefer to work from a set of plans for going at this from scratch just didn't make sence to me.
Also, I agree with greasemonkey, keep the pump live. I believe that the 122 is a gear tractor (please correct me if I'm wrong) where the 129 is a hydro. So both the crankshaft and the hydro-stub shaft are live.
If it's true that the 122 is a gear tractor, the only viable option is the PTO shaft. The PF Engineering plans call for the pump to be mounted under the engine and driven by a belt off the crank were the PTO would be. This has two problem (I think). First, ground clearance becomes and issue and second there is a power loss through the belt.
So with that said, by using a grinder cut off the front nose of the frame and extended out by 2 or 3 inches. This would probably allow for the clearnce needed to join the pump directly to the crankshaft using a love-joy-coupler.
I was looking for another alternative, hence the stub-shaft idea.
Any ideas would be helpful.

Methos · #5 11-25-2011, 11:14 PM

Quote:

Originally Posted by Gregory

Methos, I've seen a pic of the running the pump off the hydro shaft also, but can't find it again. As for running off the front PTO Shaft, that was my original idea, but I don't suspect there is enough room, without mods. Although I rebuild engines, weld and do some light machinist work as a hobby, I'm not about to cut part of the crankshaft to solve this problem.
With that said and with my limited experience with FEL's, I purchased the CAD plans from PF engineering. I would prefer to work from a set of plans for going at this from scratch just didn't make sence to me.
Also, I agree with greasemonkey, keep the pump live. I believe that the 122 is a gear tractor (please correct me if I'm wrong) where the 129 is a hydro. So both the crankshaft and the hydro-stub shaft are live.
If it's true that the 122 is a gear tractor, the only viable option is the PTO shaft. The PF Engineering plans call for the pump to be mounted under the engine and driven by a belt off the crank were the PTO would be. This has two problem (I think). First, ground clearance becomes and issue and second there is a power loss through the belt.
So with that said, by using a grinder cut off the front nose of the frame and extended out by 2 or 3 inches. This would probably allow for the clearnce needed to join the pump directly to the crankshaft using a love-joy-coupler.
I was looking for another alternative, hence the stub-shaft idea.
Any ideas would be helpful.

The 122 is a gear drive and with the 129 you could switch the drive cups and tun the pump off the rear of the motor and off to the side, but you'll have to get a new or used drive cup. New price is $83 plus shipping or $25 used plus shipping.

Cub cadet parts look up #52 cub cadet part #KH-41-071-05

http://www.partstree.com/parts/?lc=c...&dn=0019250002

You've seen the same pics as I have with the love joy coupler.

CADplans · #6 11-25-2011, 11:30 PM

All these great design modifiers, nobody figured out how to couple that pump to the back of a S/G??

You only need 1 horsepower to run a Cub Cadet front end loader.

That shaft would do it!! Heck the S/G shaft is bigger than the pump shaft!!

Gregory · #7 11-26-2011, 01:07 AM

Methos, that idea sound pretty good. But instead of making mods to the frame, I would add to the existing structure. I'd have to build a supporting structure to support the pump, plus it must be adjustable for the belt tension.

If I understand this, the pump would be driven by a belt/pulley combination off the back of the crankshaft. This would mean that the drive shaft would have to be re-machined (not a problem) shortened and re-attached.

CadPlans, your idea also holds merit. If I understand you correctly, is to drive the pump from the S/G shaft. The S/G by default has a sealed back cover plate which keeps moisture out and prevents the S/G from shorting out in inclement weather. So would l need to install a new cap on the back of the S/G with a bearing in the back to support a pump which will be externally mounted similar to the above. That is if I understand you correctly.

CHWNY · #8 11-26-2011, 08:09 AM

Old chevys used the Gen. to drive the tac. Don't know if that would interchange? or be strong enough? both made by Delco! Just a thought.

CADplans · #9 11-26-2011, 08:34 AM

Quote:

Originally Posted by CHWNY

Old chevys used the Gen. to drive the tac. Don't know if that would interchange? or be strong enough? both made by Delco! Just a thought.

Maybe that is what made me think of it.

Methos · #10 11-26-2011, 09:08 AM

Quote:

Originally Posted by Gregory

If I understand this, the pump would be driven by a belt/pulley combination off the back of the crankshaft. This would mean that the drive shaft would have to be re-machined (not a problem) shortened and re-attached.

The part #KH-41-071-05 has the pulley already cut in it. You'll have to unbolt your motor slide it forward and swap drive cups and rebolt the motor and you'll have a pulley on your motor.