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Troy Bilt GTX Loader Build

bolens loader fel troy bilt gtx pf engineering

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#1 mmmmmdonuts ONLINE  

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Posted June 16, 2017 - 08:52 AM

This is going to show my PF Engineering Loader build for my Troy Bilt GTX 18. I had a previous topic started in the Bolens forum that I was asking some basic questions for. Located here: http://gardentractor...duratrac/page-2

 

The Troy Bilt GTX is essentially a Bolens Duratrac tractor that had a native FEL for it. It weighs about 800-900lbs before anything gets added. I started gathering the parts last year and have slowly been building it over the last few months.  At this point, I have 95% of everything cut, and about 80% of the holes I need to drill drilled. I haven't had all that much time to work on it so I get to spend on it so it won't be a super fast build. In another post I will detail all the part selection, hydraulic details and some of the costs associated with it.

 

I also want to thank CEvans and Tudor (from mytractorforum), and some of the guys at wheelhorseforum for help and guidance on what they did.

 

The first thing I am working on is a ladder type subframe. While the tractor didn't initially use a subframe on its' loader I thought for long term stability it would be better to use one. I used U-bolts on the axle through 1.5x3x3/16 rectangular tube in the back. I used a scrap piece of angle (1/4"??) to ensure that the frame is square. On this angle piece I am going to weld a trailer receiver hitch, so I can use my cargo carrier for ballasting. The platform where the towers will sit is a 2x4x1/4" tube where I will then add angle iron to the frame to mount it there. Here are some pictures:

 

rps20170615_204737.jpg rps20170615_204841.jpg rps20170615_204803.jpg

 

Additionally, here is a picture of the bucket and the gussets that will mount to the the arms of the loader.

 

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Edited by mmmmmdonuts, June 16, 2017 - 08:55 AM.

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#2 TAHOE OFFLINE  

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Posted June 16, 2017 - 10:46 AM

Bolted to the rear axle, I can definitely tell you've been talking to Bob (Tudor). He was active on here about a year ago, then petered out.

Looking good, always like to see pictures of an FEL build.



#3 sharkman ONLINE  

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Posted June 16, 2017 - 11:50 AM

here is a picture of a factory loader that was for sale recently.  The guy wanted big bucks, so my guess is he still owns it.  I do like the mounting system as it looks to be easy on and easy off of the loader.  Not sure if that translates into less stability when using it.

 

 

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#4 mmmmmdonuts ONLINE  

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Posted June 16, 2017 - 04:24 PM

I did see that for sale around me. It was very expensive and couldn't afford it all at once. I was thinking of building a subframe that was similar to the one that came from the factory but I am going to use this as a dedicated loader so I wanted to beef up the subframe and make sure it went all the way to the axle which the other one doesn't.

Edited by mmmmmdonuts, June 16, 2017 - 04:25 PM.


#5 mmmmmdonuts ONLINE  

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Posted June 18, 2017 - 01:35 PM

So this post is to talk about the hydraulic parts that I have ordered. The PF Engineering plans calls for 4 2x16 cylinders. Two for each of the arms and then two for the curling of the bucket.

 

I got 4 Maverick 2x16, 2500PSI Tie Rod Cylinders from Dalton Hydraulics. http://www.daltonhyd...ore-x-16-stroke

 

They were less than 1/2 the price ($57) of the welded type so I went with the tie rod ends.

 

For the controls, I got the Prince Hydraulic Valve MB21GB5C1 from northern tool. http://www.northernt...05789_200405789

 

It features a float feature and the a power beyond port for powering any other hydraulic attachments in the future.

 

Since I am operating the loader off the front PTO shaft, and it spins at 2000RPM, I had to upsize the pump to get reasonable flow at the slower speed. So I got this pump, the Nor-Trac CB2A-F11SXA off of Northern tool. http://www.northernt...41992_200641992

 

If the engine operates at full throttle I should get approximately 6GPM at the loader, but I plan on operating somewhere around 3000RPM so I should get a flow rate around 5GPM. Since it is a hydro tranny, I probably will leave it somewhere between these two RPM's to make sure it stays nice and cool.

 

At 6GPM per minute this should give each cylinder an Extend Time=  4.3 sec,   Retract Time= 3 sec,   Cycle Time= 7.3 sec.

At 5GPM per minute this should give each cylinder an Extend Time=  5.2 sec,   Retract Time= 3.6 sec,  Cycle Time= 8.8 sec.

 

This pump is connected with a lovejoy coupler.

 

There is a 1"-15T spline coupler. PN (6408K16) from McMaster-Carr. This connects to the tractor end.

The pump connects to a 5/8" coupler: 6408K16 from McMaster-Carr.

These two are connected with a spider in the middle: 6408K77

 

I will try and get some pictures of these things soon, especially the coupling.


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#6 mmmmmdonuts ONLINE  

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Posted June 25, 2017 - 04:19 PM

Completed the subframe today. Welded a harbor freight step trailer hitch to the subframe. I plan on using the hitch for ballasting in the rear. I am thinking of using concrete blocks and drilling holes through them and putting a threaded rod through the block and the hitch.

The next images are of the lovejoy couplers and the pump still in the bag.

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#7 SupplySergeant OFFLINE  

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Posted July 17, 2017 - 01:21 PM

:watch_over_fence:

I need something like this, just never have the time to do it!



#8 Cvans ONLINE  

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Posted July 17, 2017 - 08:36 PM

My pump connected to the mid PTO shaft.

IMG_0378.JPG


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#9 mmmmmdonuts ONLINE  

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Posted July 17, 2017 - 08:50 PM

:watch_over_fence:
I need something like this, just never have the time to do it!


I have been slowly going at it for months. Just a few hours here and there and it will get done;)

Cvans,

I remember photo you posted before with that pump. Is the pump bolted to your subframe behind it? I know the stock pump goes on the front PTO and thought it could be easier to access but it limits me if I wanted to run something else off the front. You used a lathe to make that extension piece correct? I don't have access to something like that.

I did have another question about my pump. It is bidirectional and has 2 inputs, 2 outputs and then a much smaller port. How do I know which inlet and outlet to use? There was no diagram with it.
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#10 Alc ONLINE  

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Posted July 18, 2017 - 05:48 AM

The small port is the case drain , must be plumbed back to the tank . Looks like you can use the rear or  side ports . Did they give you 2 plugs for the ports that aren't being used ?  I wonder if it was in a location to get a better fit ,, say the inlet was on the rear and the outlet on the side ?



#11 mmmmmdonuts ONLINE  

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Posted July 18, 2017 - 11:29 AM

I don't have the pump in front of me but I thought the two rear ports are the outlets because of the size and what the drawing says and the sides are the inlets. That's why I didn't know if orientation matters?

Alright that makes sense with the drainage port. It doesn't have to be higher than the tank correct to drain correctly?

#12 Cvans ONLINE  

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Posted July 18, 2017 - 01:29 PM

I'm going to be using the tractor shortly so I will try and get some better photos for you. It's going to be dirty under there so I hope you'll be able to see something. I just can't remember the port orientation. You can't compress a liquid so the fluid has to fallow the gear rotation around the outside of the pump. The oil will not pass between the gears. Sure hope I didn't mess that one up.  :hitting_self_roller:

Yes I used a lathe. 

Here's the photos. The pump mount is welded to a strap iron cradle that goes up to the frame on each side. 

 

IMG_0482.JPG IMG_0484.JPG

 

Looks like the clamp on my return line needs to be tightened. The hose with the spring around it is the oil drain from the engine. 


Edited by Cvans, July 18, 2017 - 06:33 PM.

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#13 mmmmmdonuts ONLINE  

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Posted July 21, 2017 - 07:18 PM

Thank you for the pictures and the really good explanation of the pump orientation. I got to see how viable it will be for me to put it there and not interfere with the wheels.
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#14 mmmmmdonuts ONLINE  

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Posted July 27, 2017 - 11:26 AM

Finished painting the subframe.
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#15 mmmmmdonuts ONLINE  

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Posted August 21, 2017 - 09:03 AM

Some pictures of the subframe mounted to the tractor. It attaches to the axles in the back and then gets mounted right in front of the foot rest with 1/2" bolts with a 3/8 steel plate on the inside for extra support. There isn't much room with the engine nearby so it was not a very easy mount. The left side of the tractor where the power steering hydraulic cylinder was mounted needed quite a bit of adjustment. I moved where the mounting bracket was to outside of the subframe was and expanded the one bolt from 3/8 to 1/2. Then remounted everything. I don't think it should be a problem at all.

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Also tagged with one or more of these keywords: bolens, loader, fel, troy bilt, gtx, pf engineering

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