CAT 420D Hydraulic Schematic

I am looking for a hydraulic schematic for my 420D.

I recently hired a local mechanic to remove and reinstall all my hydraulic cylinders to have them rebuilt. When he reinstalled the two excavator swing cylinders, he must have switched up the hoses, so it wouldn't move left or right. After only a few minutes with the engine running, fluid started pouring out from below the RH excavator control. I assume the two cylinders were pressurizing against each other. So, before I can do anything else, I need to get the four swing arm hoses straightened out.

Also, any ideas on what blew out in the control would also be helpful!

Thanks!

Eric

Well done for including your serial number in your sig. Always expedites a response when dealing with Caterpillar equipment. Here's the hydraulic schematic.

Cmark said:

Well done for including your serial number in your sig. Always expedites a response when dealing with Caterpillar equipment. Here's the hydraulic schematic.

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Thank You!

heymccall said:

View attachment 206449

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Perfect! Thanks!

If you click your computer pointer on the posted image it will enlarge the it and you will see it in great detail.

Im looking for a hidraulic schematic for my 432f

Im looking for a hidraulic schematic for my 432f lnr prefix

jrangel78 said:

Im looking for a hidraulic schematic for my 432f lnr prefix

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