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    Cat 247 lost all hydraulics

    Hey guys thanks for all the help. It ended up being the charge pump that mounts to the front of the twin piston pump. The pump failed and locked up, shaft sheared in two. So I ended up replacing the coupling anyway while i had it apart. And Installed a new charge pump and good to go.
  2. D

    Cat 247 lost all hydraulics

    I didn't get a chance to get by the machine today. I went ahead and ordered a new flange, coupler and bolt. Hopefully I'll have time to install it tomorrow. I'll let yall know. Thank you for your help.
  3. D

    Cat 247 lost all hydraulics

    I have hub #5 off. I will attempt to stick it in #1 tomorrow and let you know. If it is the pump would I replace both the tandem pump as well as the smaller charge pump on the front? What is both of their functions?
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    Cat 247 lost all hydraulics

    Splines in #1 and # 5 look fine. I pulled them apart earlier.
  5. D

    Cat 247 lost all hydraulics

    Yes. Lost drive/implement/fan all at once. How do I tell if the coupler failed? It looks fine to me. As in no unusual wear on teeth. And allen bolt isn't sheared.
  6. D

    Cat 247 lost all hydraulics

    CML00475 is serial number. Yes lost everything at same time. But about a week ago my lift arms got super weak. I was thinking stuck relief valve. Then today this happened. So I pulled it apart and the teeth on number 5 and number one in the above picture look fine. How do I tell if the...
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    Cat 247 lost all hydraulics

    @Nige
  8. D

    Cat 247 lost all hydraulics

    Hey guys. Any help is much appreciated. My cat 247 was having issues recently having weak lift arm function. Everything else worked fine. Today we were running the machine and lost all hydraulics all of a sudden. The hydraulic fan isn't spinning either. I pulled the pump away from the engine...
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