1965 Case 530CK Clutch

Ed Ray

New User
Folks:
I am rebuilding a 1965 Case 530CK that had a busted crankshaft. While I had the engine out I wanted to replace the clutch. The rebuilt clutch that I obtained has a female spline. The old clutch does not have one but is otherwise identical to the rebuilt one. There is no bearing in the flywheel, only a pilot bushing in the end of the crankshaft. I am concerned that using the rebuilt clutch with the spline will cause the pump drive to turn all the time and cause wear problems with the clutch shaft when the clutch is disengaged. Any thoughts or assistance would be greatly appreciated.
Thanks.
 
I am presumeing that you are refering to the pressure plate cover, and it has the female spline in it. That spline in the cover is supposed to engage the pump drive to give you live hydraulics. Any time the engine is running the pump should be running. I don't understand what you are conserned about. That is how they were built to function.
When you are reassembling the engine to the bellhousing, be very careful the pump drive engages the spline in the pressure plate cover or you will buckle the cover if you draw it together with bolts which is a nono.
See Bro's diagram below.
Loren
 
Thanks for the quick reply. I probably did not explain my concern properly. The machine is a 530CK loader/backhoe(159G engine)with an external front mounted hydraulic pump. It does not have an internal hydraulic pump but does have the pump drive to support the clutch shaft and to seal the bell housing from the torque tube. The clutch shaft is not supported by a bearing in the flywheel. There is only a pilot bushing in the end of the crankshaft. My concern is that if the pump drive is turning at engine speed when the clutch is disengaged the pump drive will wear on the clutch shaft. What started all this was that the old pressure plate cover did not have a female spline in it. Since I bought the machine used, I don't know if the old pressure plate was the original or if someone else worked on it. I am attaching some photos.
a214706.jpg

a214707.jpg
 
If the pump drive is in place without a pump I wouldn't worry. I have a 440 that never had a factory installed belly pump until I found one and installed it to operate a front mtd plow and rear remote circuit to operate dump trailer. No issues at all. I would have been POed If the pump shaft was NOT splined to the clutch PP cover. If you are that consurned; just carefully grind off the rivits that hold the splined hub. All the 430-630 tractors just had a bushing in the crank to support the clutch shaft. No biggy there either. In my opinion, you are fretting over nothing.
Loren.
 
Loren:
Thanks for the information. You are probably right about the excessive fretting, but as you know it is a lot of work to open these machines to get at the clutch. I was able to check with a chap who rebuilt a similar machine and posted the photos. His machine used the splined PP. I dug a little deeper into the pump drive and housing. The pump drive bearing retainer and bolts were bent up as if someone had trouble engaging the pump drive spline in the PP hub. They may have decided to remove the hub to solve the problem. Anyway, I am going to use the splined PP and be very careful when reinstalling. Thanks again for your help.
Ed.
 

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