4610 HST Hydraulic Leak

/ 4610 HST Hydraulic Leak #1  

evanjohnson

Member
Joined
Mar 11, 2002
Messages
26
Location
Coastal SC
Tractor
KUBOTA L4610 HST/ JD 955 (SOLD)
I have an L4610 HST/ Loader with 440 hours and a hydraulic leak at the Split Pin Drain.

It used to be an occasional drip but the other day it peed ~2 quarts of hydraulic fluid on the garage floor. I refilled it and used it for a brief chore and parked it again. Next morning ~ another quart on the floor. All leaks coming from the split pin drain.

Is this likely to be the seal on the hydrstaic pump where it mates to the engine or is there something else (pressure relief?)that dumps into the "clutch housing"?

Any help would be appreciated.
Thanks,
evan
 
/ 4610 HST Hydraulic Leak #2  
Define "split pin" for me and I will try to look it up in the parts manual.
 
/ 4610 HST Hydraulic Leak #3  
pin drains the clutch area I believe. Not sure what hydraulic seal could be leaking.

ksmmoto
 
/ 4610 HST Hydraulic Leak
  • Thread Starter
#4  
In advance, I thank you for your help.

PIX attached.
 

Attachments

  • Split Pin.jpg
    Split Pin.jpg
    97.3 KB · Views: 446
/ 4610 HST Hydraulic Leak #5  
These are from the 5030 parts manual, but there is probably no substantive difference.

The first pdf is the exploded diagram and second pdf is the part nomenclature.
 

Attachments

  • Clutch Housing HST.pdf
    236.7 KB · Views: 264
  • Clutch Housing Numbers HST.pdf
    110.2 KB · Views: 242

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