JD 5403/512 FEL low lift capacity

   / JD 5403/512 FEL low lift capacity #1  

Tx Jim

New Member
Joined
Jan 26, 2007
Messages
10,012
Location
Coyote Flats,Tx
Tractor
JD 4255/Kubota M7040 HDC
My knowledge of JD tractors built after '92 is very limited. A friend called me inquiring why his 5403 with 512 loader stopped having ability to pick up 1800# sack of feed. He stated he recently changed hyd filter & cleaned suction screen. I instructed him to plug a 5000 psi gauge in rear breakaway then move control lever to pressurize the gauge. Gauge registered 2500 psi instead of factory setting of 2800 psi. Which relief valve controls the system pressure?
Thanks for any help, Jim
 
   / JD 5403/512 FEL low lift capacity #2  
Sorry I cannot help with that specific question as I am unfamiliar with the deere....maybe if he is friendly with the local dealer maybe they can show him or e-mail him the page from the service manual regarding adjusting the pressure?

But Id be surprised if thats the only issue. A loader rated to 4500# breakout at the pins and 3000# breakout at 800mm should not struggle getting 1800# off the ground even being at 2500PSI vs 2800psi
 
   / JD 5403/512 FEL low lift capacity
  • Thread Starter
#3  
Thanks for your reply. I agree that the loader should be able to lift the full feed sack.
 
   / JD 5403/512 FEL low lift capacity #4  
I have attached two pictures. The first one is where on the tractor you can find the main relief valve. It is item "O" on that diagram. The second is a picture of the SCV valve where the relief valve is located. The relief valve is item "A" on that picture. It doesn't appear that the valve is adjustable. The manual just says to replace it.

1675021917544.png


1675021943104.png
 
   / JD 5403/512 FEL low lift capacity
  • Thread Starter
#5  
Thank you for info. I will forward that info to my friend.
 
   / JD 5403/512 FEL low lift capacity
  • Thread Starter
#6  
Doaj50
I searched JD 5403 parts catalog & was unable to locate the hyd relief valve. Would you be so kind to pst it's part #? Thanks, Jim
 
   / JD 5403/512 FEL low lift capacity #7  
Here is what I found on the JD website- Item#30, P/N SJ290467. It's description just says "Kit" but in the comments it states "Relief Valve Sub Assembly". Hope this helps.

JD Parts Catalog
1678233509844.png
 
   / JD 5403/512 FEL low lift capacity
  • Thread Starter
#8  
Thank you. I relayed your info to my friend. Thanks again, Jim
 
 
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