Jump to content

Nominations for Tractor of the Month
Garden Tractors and Parts on eBay



Photo
- - - - -

317 Clunker- Help! Crawler Build

317 hydrostatic

  • Please log in to reply
22 replies to this topic

#1 larrylee OFFLINE  

larrylee
  • New Member
  • Member No: 11820
  • 15 Thanks
  • 8 posts
  • Location: Holland, MI

Posted September 28, 2013 - 08:22 PM

Hello all-

I am new to this forum. I build mini dozers and this winter, I am converting a 1982 317 to a mini track dozer.

I bought a 317 that had a fist sized hole in the crank case, for the hydrostatic trans and hydraulic outputs up front for the blade.

I put a JB weld patch over the hole and ran it around for a few minutes today to test the hydro and it worked fine in forward, but surged badly in reverse. I added a quart of F-type trans fluid before the maiden jaunt, but it was low again when I returned a few minutes later. I fillid it to the midway point on the sight tube again, and the same thing happened. I added another quart all together and it still surges in reverse.

I am a little surprised that it worked so well in forward, being so low on fluid. It isn't leaking out on the floor, so I guess it was just low?????

Any help appreciated!

Thanks!
  • Dieselcubmike and superspeedex have said thanks

#2 Texas Deere and Horse OFFLINE  

Texas Deere and Horse

    RED Wild Hogs, Horses & Deeres

  • Staff Admin
  • Staff
  • -GTt Supporter-
  • Contributor
  • Member No: 1435
  • 14,464 Thanks
  • 15,392 posts
  • Location: East of San Antonio Texas

Posted September 28, 2013 - 08:56 PM

Larry, Welcome to GTtalk. If you don't see any puddles under the tractor, it had to just be low. Can't wait to follow the build.


  • larrylee said thank you

#3 Dieselcubmike OFFLINE  

Dieselcubmike
  • Senior Member
  • Member No: 11127
  • 1,327 Thanks
  • 1,511 posts
  • Location: Southwestern,Pa

Posted September 28, 2013 - 09:27 PM

Hello there and welcome! :wave:


  • larrylee said thank you

#4 JDBrian OFFLINE  

JDBrian

    Super Moderator

  • Super Moderator
  • Staff
  • -GTt Supporter-
  • Contributor
  • Member No: 2507
  • 9,574 Thanks
  • 14,136 posts
  • Location: Hubley, Nova Scotia - Canada

Posted September 29, 2013 - 07:05 AM

Those hydros are vented and even if everything is clean they don't vent fast enough to allow you to fill them in one shot. I just refilled mine and it did the same thing. it usually takes about 3 fills to get it to a stable point. For the shuddering look at the linkage. If there is a lot of slack in it anywhere it can show up as jerky motion. Go to JDParts.com and do a model search for 317. The linkage is a bit of a contraption but if you follow it through from the lever to the trans and look for slack. There is a damper in there that could be a problem as well. It looks like a small shock. 


  • Alc, Texas Deere and Horse and larrylee have said thanks

#5 larrylee OFFLINE  

larrylee
  • New Member
  • Member No: 11820
  • 15 Thanks
  • 8 posts
  • Location: Holland, MI

Posted September 29, 2013 - 06:52 PM

Thanks for the help! Turns out the hydro bypass valve was part way closed.... That knob hadn't been turned in years and it wasn't easy, but well worth it!

All is well now and I can start the tear down.

Thanks again!
  • MH81 and Texas Deere and Horse have said thanks

#6 JDBrian OFFLINE  

JDBrian

    Super Moderator

  • Super Moderator
  • Staff
  • -GTt Supporter-
  • Contributor
  • Member No: 2507
  • 9,574 Thanks
  • 14,136 posts
  • Location: Hubley, Nova Scotia - Canada

Posted September 30, 2013 - 05:01 AM

I think a lot of folks will be interested in this project. We would appreciate some photos and posts on your progress.



#7 larrylee OFFLINE  

larrylee
  • New Member
  • Member No: 11820
  • 15 Thanks
  • 8 posts
  • Location: Holland, MI

Posted October 22, 2013 - 06:57 PM

Hi All,

 

Finally got the 317 stripped down to the frame and cleaned up enough to start mocking up the pieces that I have.

In these pics, I am just trying to determine what size the rear sprocket should be to clear the body pan.  I traveled to Ohio to

buy the rubber tracks and now I am trying to find a way to get the sprockets designed\built or bought.  Without knowing what the

tracks are designed for (brand, model, excavator? bobcat? etc) it is proving difficult to find the proper sprockets.

 

I am looking for a 17 series II or 18 Magnum and a 4-way hydraulic plow to complete the hardware needed.

 

I will post more pics when progress has been made.

 

Larry

Attached Thumbnails

  • DSCF4732.JPG
  • DSCF4734.JPG

  • superspeedex said thank you

#8 Cat385B ONLINE  

Cat385B

    Therapy CAT

  • Senior Member
  • Contributor
  • Member No: 8002
  • 11,700 Thanks
  • 8,893 posts
  • Location: MN

Posted October 22, 2013 - 07:21 PM

Those tracks are too short for a skid steer, must be for a mini excavator. Not a tread pattern I recognize, might be an aftermarket replacement track. Looks to be bigger than a Cat 301.5/301.8 size machine, but not by much.

#9 larrylee OFFLINE  

larrylee
  • New Member
  • Member No: 11820
  • 15 Thanks
  • 8 posts
  • Location: Holland, MI

Posted October 22, 2013 - 08:41 PM

Those tracks are too short for a skid steer, must be for a mini excavator. Not a tread pattern I recognize, might be an aftermarket replacement track. Looks to be bigger than a Cat 301.5/301.8 size machine, but not by much.

the track size is 230 x 72 x 46 but I can't find the OEM fit



#10 BairleaFarm OFFLINE  

BairleaFarm

    Member

  • Senior Member
  • -GTt Supporter-
  • Member No: 8328
  • 1,201 Thanks
  • 1,725 posts

Posted October 23, 2013 - 11:04 AM

I'll be watching this build.

#11 larrylee OFFLINE  

larrylee
  • New Member
  • Member No: 11820
  • 15 Thanks
  • 8 posts
  • Location: Holland, MI

Posted October 24, 2013 - 11:15 AM

Here is a pic of my first mock-up to determine largest possible rear drive sprocket- had to raise seat pan

a few inches for clearance, but I think I can make everything work with this modification.DSCF4736.JPG


  • superiorpower, Cat385B, BairleaFarm and 1 other said thanks

#12 Cat385B ONLINE  

Cat385B

    Therapy CAT

  • Senior Member
  • Contributor
  • Member No: 8002
  • 11,700 Thanks
  • 8,893 posts
  • Location: MN

Posted October 24, 2013 - 09:47 PM

I went through the entire list, I can't find that track size. Closest ones are 230x72x42 or 43, then it jumps to 230x72x54. Tons of makers with the 230x72x43's.



#13 MH81 ONLINE  

MH81

    Proud to be Deplorable

  • Staff Admin
  • Staff
  • -GTt Supporter-
  • Contributor
  • Member No: 802
  • 27,268 Thanks
  • 28,606 posts
  • Location: N. W. PA

Posted October 25, 2013 - 05:16 AM

The 317 is looking like it will be coming together. Enjoying watching the build.

Edit: I forgot to say :welcometogttalk: before

#14 JDBrian OFFLINE  

JDBrian

    Super Moderator

  • Super Moderator
  • Staff
  • -GTt Supporter-
  • Contributor
  • Member No: 2507
  • 9,574 Thanks
  • 14,136 posts
  • Location: Hubley, Nova Scotia - Canada

Posted October 28, 2013 - 05:12 PM

That looks great. Thanks for the update and the pictures. I guess you will be using the dual rear brake setup for turning. The stock setup actually puts a fair amount of power on the non driven wheel. I don't think it was called a limited slip but IME if you are spinning in sand it will spin the non driven wheel a fair bit. 



#15 TAHOE OFFLINE  

TAHOE
  • Senior Member
  • -GTt Supporter-
  • Contributor
  • Member No: 24522
  • 6,480 Thanks
  • 4,937 posts
  • Location: "Hamiltucky" Ohio

Posted November 01, 2013 - 09:06 AM

Just stumbled across this thread, cool build. I also liked the little tracked GT's seems like a cool project.

 

I've been to Holland a couple times, my employeer used to have a plant up on Douglas Ave.







Also tagged with one or more of these keywords: 317, hydrostatic

Top