1954 Case 500 hydraulic pump and remotes

[GBman]

Thank you to John and Daniel for the help on the PSB pump.

Next project is getting the hydraulic system operational. I have the shop manual part 1 and 2 which is pretty extensive but doesn't really do a very good job with the diagram of the hydraulic pump. I want to make sure that there are 3 distinct reservoirs, hydraulic, pto sump and final drive housing. The hydraulic pump and pto sump do not share oil between them do they? Can anyone share a diagram? I especially want to make sure that I'm using the correct filling point for the hydraulic pump. I pulled the drain directly under the Hy pump but very little oil came out. I think this due to lack of maintenance by prior owners or leaks. Can I expect any damage if the pump was run without oil. These are continuous running with the engine on.
Second topic, I'm looking for the top yoke (bolt on) for the drawbar. Ideally, one off of a tractor of this period. Not sure how many models used the same bolt pattern as the 500.
Thank you all!
GB

 

[casecollectorsc]

Your first picture...top left plug is fill and lower right small plug is the full level plug. Bigger plug at the top left is the rear end and transmission fill plug.

 

[Don Rudolph]

Wow....that drawbar has seen some serious action.

 

[John Saeli]

Thank you to John and Daniel for the help on the PSB pump.

Next project is getting the hydraulic system operational. I have the shop manual part 1 and 2 which is pretty extensive but doesn't really do a very good job with the diagram of the hydraulic pump. I want to make sure that there are 3 distinct reservoirs, hydraulic, pto sump and final drive housing. The hydraulic pump and pto sump do not share oil between them do they? Can anyone share a diagram? I especially want to make sure that I'm using the correct filling point for the hydraulic pump. I pulled the drain directly under the Hy pump but very little oil came out. I think this due to lack of maintenance by prior owners or leaks. Can I expect any damage if the pump was run without oil. These are continuous running with the engine on.
Second topic, I'm looking for the top yoke (bolt on) for the drawbar. Ideally, one off of a tractor of this period. Not sure how many models used the same bolt pattern as the 500.
Thank you all!
GBView attachment 159722View attachment 159723View attachment 159724View attachment 159725
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Your 500 actually only has 2 reservoirs behind the clutch. The transmission and final drive share 1 housing which require 85W140 Gear Oil. The PTO and Hydraulic housing share a 2nd reservoir which require a premium "Transmission-Hydraulic Oil. I'd add a pint of 85W140 to it. The fill points can be confusing because the Tranny-Final Drive fill is actually there at the top of the PTO housing as depicted in the picture, the forward, larger plug. However it will direct the oil forward. The smaller plug, just rearward of that larger plug is the PTO-Hyd. Fill and as Collector pointed out, that small 1/8" pipe plug down below is the PTO-Hyd. level plug.