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Montana 4340 Steering Hydraulic Cylinder Disassembly for Rebuild

   / Montana 4340 Steering Hydraulic Cylinder Disassembly for Rebuild #1  

jonathandnielsen

New member
Joined
Apr 29, 2020
Messages
8
Tractor
Montana 4340
I have a steering cylinder that is leaking on my Montana 4340. I can't figure out how to disassemble it so I can replace the seals. Everything I can find online about rebuilding cylinders they have a head that screws off. This cylinder appears the be one solid piece that doesn't come apart. Would someone be able to point me in the right direction? Thanks!

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   / Montana 4340 Steering Hydraulic Cylinder Disassembly for Rebuild #2  
I have a steering cylinder that is leaking on my Montana 4340. I can't figure out how to disassemble it so I can replace the seals. Everything I can find online about rebuilding cylinders they have a head that screws off. This cylinder appears the be one solid piece that doesn't come apart. Would someone be able to point me in the right direction? Thanks!

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Take off that hose with the bango fitting and you will see a snap ring on the end of the cylinder. Remove that while it’s in the bore and then it will come apart.

When I did mine I never could figure out a way to assemble it with the snap ring so I left it off and let the steering stops keep it from ejecting the cylinder
 
   / Montana 4340 Steering Hydraulic Cylinder Disassembly for Rebuild
  • Thread Starter
#3  
Thank you! I'll give that a try.
 
   / Montana 4340 Steering Hydraulic Cylinder Disassembly for Rebuild #4  
Where did you find the packing kit? I have been unable to find a packing kit. I have a small leak on my 4340.
 
   / Montana 4340 Steering Hydraulic Cylinder Disassembly for Rebuild
  • Thread Starter
#5  
The part numbers you need are A1630273 and A1630272.
 
   / Montana 4340 Steering Hydraulic Cylinder Disassembly for Rebuild
  • Thread Starter
#6  
   / Montana 4340 Steering Hydraulic Cylinder Disassembly for Rebuild #7  
   / Montana 4340 Steering Hydraulic Cylinder Disassembly for Rebuild #8  
Thank you!
 
   / Montana 4340 Steering Hydraulic Cylinder Disassembly for Rebuild #9  
what is a Bango fitting ?
 
   / Montana 4340 Steering Hydraulic Cylinder Disassembly for Rebuild #10  
Did you figure out how to reinstall the retaining clip in the banjo fitting after you serviced the cylinder ?
 
   / Montana 4340 Steering Hydraulic Cylinder Disassembly for Rebuild #11  
I wanted to add some part numbers to this post that might be helpful to anyone reading this.

The Montana part numbers for the gasket and dustcover listed above as A1630273 and A1630272 are correct but here are the part numbers converted to LS so you can buy directly from a LS dealer. As follows

40049576 and 40007421

 
   / Montana 4340 Steering Hydraulic Cylinder Disassembly for Rebuild #12  
I'm so thankful for this site. I had a terrible time finding the right seals for my steering cylinders until I found this thread. Thank you so much for sharing those part numbers.

I figured out how to get the retaining clip in place again after replacing the seals and wanted to share how I did it.

The rod has a bevel on the very end that the retaining clip will sit on to hold it in position to push against a lip at the bottom of the cylinder.
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When the rod is pushed all the way into the cylinder, that lip will force the retaining ring past the high spot on the rod and into the groove.

The problem is, you can't set the clip on the bevel before you slide the rod into the cylinder. However, you can put the clip into the cylinder and, holding the cylinder vertically with the opening on the bottom, get the clip to lie flat on the lip above the seals. Still holding the cylinder vertically, insert the rod until you see the end through the threaded hole in the side of the cylinder. Through this hole, manipulate the clip so it rests on the beveled end of the rod.
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Once the clip is in position, push the rod all the way into the cylinder until it stops. Finally, still holding the cylinder vertically, drop it from a height of 8 or 10 inches into a hard surface, like a concrete floor.
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That will pop the clip into the groove, preventing the rod from coming all the way back out of the cylinder.
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I'll attach some pictures I took during my re-assembly.
 
   / Montana 4340 Steering Hydraulic Cylinder Disassembly for Rebuild #13  
Glad the part numbers were helpful. I wasn't finding much info on them so figured id share. Thanks for posting pictures on how to take the cylinder apart. I couldn't figure it out at the time so I ended up taking them to a shop. I started a facebook page a while back that also has a lot of good info and pdfs available. Its called LG/LS Montana.
 
   / Montana 4340 Steering Hydraulic Cylinder Disassembly for Rebuild #14  
I just found and joined this forum. I'm glad I did because I have a Montana 4940 that I have been trying to find the process for fixing the steering cylinders. Thank You for posting it here.
 

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