Loader on a 784 international is not getting full pressure when there is a load on the rear arms. Works fine when I place a bar on the hitch to support the arms. Also works when there is no load on the arms in the raised position. The rear weight is not attached to the top link. There is external light rams fitted with the ih connection to the release valve location. The rear linkage supports a load when the engine is stopped for a considerable time eg overnight. Any ideas
International hydraulic problem
- Thread starter murrayp39
- Start date
J_J
Super Star Member
- Joined
- Sep 6, 2003
- Messages
- 18,928
- Location
- JACKSONVILLE, FL
- Tractor
- Power-Trac 1445, KUBOTA B-9200HST
Hydraulics:
Type: open
Capacity: 9 gal [34.1 L]
Valves: 1 or 2
Pump flow: 13 gpm [49.2 lpm]
15.4 gpm [58.3 lpm] (optional)
The amount of the load will determine the pressure developed.
Tractor data says your 3pt capacity is about 3600 lbs.
What is full pressure?
Is there a loader on the tractor?
Do you have a hyd gage to check pressure?
Type: open
Capacity: 9 gal [34.1 L]
Valves: 1 or 2
Pump flow: 13 gpm [49.2 lpm]
15.4 gpm [58.3 lpm] (optional)
The amount of the load will determine the pressure developed.
Tractor data says your 3pt capacity is about 3600 lbs.
What is full pressure?
Is there a loader on the tractor?
Do you have a hyd gage to check pressure?
full pressure 2500 tested with a gauge, there is a silage grab on the loader with about 300kgs on the rear as a ballast weight. no prblems with the front pressure when the 3pt linkage is supported, but when the support is removed the front speed is slowed.
As stated the front loader works fine when the link arms are supported when carrying a weight, when the support is removed to allow the arms to carry the weight the front loader responds very slow and requires additional rpm but the loader is still slower. When there is no weight on the back arms and they are raised there is no problems, only when loaded. There is assistor rams on this tractor.
The High pressure carry over (HPCO) is the correct method to supply oil to a loader or other valves
mounted on the tractor!!
How many spools are fitted to tractor 1or 2 ?? Question?? If loader is supplied from the SA valve, where is the return piped to ??
However i suspect an oil leak on the draft control valve to lift cylinder mounting allowing oil loss from the hitch when the hitch is in any position but fully up!!
Under the seat is an inspection plate in the cab deck, remove this, then you will see the heads of 4 large bolts, just put a spanner on these and see if they are tight!!
mounted on the tractor!!
How many spools are fitted to tractor 1or 2 ?? Question?? If loader is supplied from the SA valve, where is the return piped to ??
However i suspect an oil leak on the draft control valve to lift cylinder mounting allowing oil loss from the hitch when the hitch is in any position but fully up!!
Under the seat is an inspection plate in the cab deck, remove this, then you will see the heads of 4 large bolts, just put a spanner on these and see if they are tight!!
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