Bump up lift capacity of L3400/LA463 Loader

   / Bump up lift capacity of L3400/LA463 Loader #11  
I have the same tractor and bumped mine up a couple of weeks ago from 1450psi to 1750psi. I highly recomend you buy a wet gauge to measure so you don't end up damaging something.

I think you mis-typed. Didn't you mean from 2450 to 2750 psi?

The attachment is a camera snap from the Kubota WSM showing the valve, it's parts and the pressure per shim.

jb
 
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   / Bump up lift capacity of L3400/LA463 Loader
  • Thread Starter
#12  
I think you mis-typed. Didn't you mean from 2450 to 2750 psi?

The attachment is a camera snap from the Kubota WSM showing the valve, it's parts and the pressure per shim.

jb

Wow. Did Kubota really have it set that low on the relief pressure? Now am I really curious as to what mine is set at. No wonder it seems like like it wont piack up a bucket full of anything. Brian
 
   / Bump up lift capacity of L3400/LA463 Loader #13  
Sorrry guys I had a senior moment! I should have said 2450 t0 2750psi. Thanks for the correction.
 
   / Bump up lift capacity of L3400/LA463 Loader #15  
Another bump for this thread. I too would love to see some pics and a "how-to" post for this!! Thanks,
j
 
   / Bump up lift capacity of L3400/LA463 Loader #16  
I will also be watching for progess... and thanks john_bud for posting photo.
 
   / Bump up lift capacity of L3400/LA463 Loader #17  
While pics are always great this adjustment is one of the easiest you will ever do. As I explained the hydraulic block is clearly assessible and the valve screws right out. The diagram posted is identical to the one posted. Adding a shim (or similar washer) will result in a proportional increase in relief pressure. I paid $30 for a wet gauge and put a quick release on it that will go on any of the four hoses on the control spool valve. Measuring pressure before and after is a key to making sure you have not changed too much. The biggest change I noticed is lift and curl and a bit stronger. Before my Kubota I has a Koyker 160 and it had significantly better lift and curl capacity. What do you guys say would be the max pressure? I am thinking about bumping up to around 2950?
 
   / Bump up lift capacity of L3400/LA463 Loader
  • Thread Starter
#18  
Since I am the one one that started this thread I wish I had something to report. Been a busy week and not lloking good for this weekend either. Sorry about that guy's. I really want to see what my pressure is. Brian
 
   / Bump up lift capacity of L3400/LA463 Loader #19  
If you cross reference part numbers between the LA463 and the LA513 they almost all match up... including the cylinders and the boom, so anyone thinking about trying this should be fine with capacities similar to the LA513 because it's essentially the same loader.

The main differences being some decals and the control valve and probably the mounting brackets.

That said, it's more difficult to predict how the L3400/2800 will handle the additional stress, either in the hydraulics or on the front axle.

I look forward to hearing more about how the L3400/2800 holds up to the extra stress from anyone who has given it a try, it's something I've been considering for a while but would rather not try before my warrantee is up.
 
   / Bump up lift capacity of L3400/LA463 Loader #20  
I look forward to hearing more about how the L3400/2800 holds up to the extra stress from anyone who has given it a try, it's something I've been considering for a while but would rather not try before my warrantee is up.

I'd be more apt to try it if mine was still under warranty!
 

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