RK 37HC transmission capacity

[Ishkatan]

This video shows the same thing for an RK25.

Around minute 22 is where he starts.

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[Ishkatan]

View attachment 718114

I found my strainer (RK37HC) behind that pipe. Unfortunately to get it out you have to not only remove the pipe but also remove the subframe for the loader. Yup, the loader subframe is in the way. I got mine about 3/5 of the way out but left it hanging while I sprayed it with some diesel. It was totally clean so I decided not to worry about it at the next oil change. Someday I might remove the bolts holding the loader frame... if I feel ambitious.

 

[Ishkatan]

Well, today I did a service on the hydraulic/transmission. Back in August I noticed that I couldn't see the fluid level in the sight glass and I was approaching 150 hours. I hadn't really been keeping track of the hydraulic fluid level since the 50 hour service like I do the engine oil. Not knowing if the fluid level was down a gallon or 3 gallons I decided to just do a complete service. After draining the fluid and removing the filter I found that the filter they gave me was the wrong one. The one removed had a hole approximately 5/8" where as the one removed had about a 1" hole. I called RK and found out that the filter was mislabeled as one for the RK37 rather than the RK55. They swapped out the filter for me then after installing it I went to the last step in cleaning the transmission strainer. When I pulled that I don't see where that can strain anything. It looks to like nothing other than a cap with an o-ring to seal it. I was expecting a straining screen of some kind like on old Volkswagons. Am I missing something? After completing all these steps and adding 9 gallons of fluid, the fluid can't be seen in the sight glass. The rep at RK gave me 5 two gallon containers of transmission fluid so now I wondering if I go by the quantity in the manual of 9.2 gallons or add the other gallon and see if it shows in the site glass?

Did other RK37 owners have the same issue with the transmission strainer and the amount of oil added?

Thanks....Don

I hope you got the level right. I had to add red dye to make it visible and I had overfilled it and had to syphon some out. Now I am a little confused - with loader and 3pt arms up I have nothing in the sight glass. With them down the sight glass shows full with just a sliver of no ink at the top.
(Until you add dye, the sight glass looks like there is not enough fluid, so I want to keep adding. Either watch the glass while adding, which is hard to do, or add dye... There is fluid left in the cylinders when you drain the system so you need less than the stated (dry) capacity.)