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I need a case drain for a cat 312 excavator(not a or C

Customer Question
I need a case...

I need a case drain for a cat 312 excavator(not a B or C model. A straight 312). Can I plumb it into the return just before the filter, or do i need to install a connection in the reservoir. Also do i need a filter

Mechanic's Assistant: What is the complete model and serial number of your machine?

312 6gk00795

Submitted: 1 year ago.Category: Construction and Road Equipment
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Answered in 15 minutes by:
8/18/2021
Mechanic: Curtis B., Technician replied 1 year ago
Curtis B.
Curtis B., Technician
Category: Construction and Road Equipment
Satisfied Customers: 43,568
Experience: Technican turned service manager with multiple lines of equipment and rental units.
Verified

Best to plumb it in before the return filter, then the filter will collect any debris from the drive.

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Customer reply replied 1 year ago
I was told the return line can build small amounts of pressure which could be too high for a case drain. Any truth in that?I was told the return line can build small amounts of pressure which can be to high for a case drain. Is that true?
Mechanic: Curtis B., Technician replied 1 year ago

No, it will not.

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Customer reply replied 1 year ago
How many psi is tolerable in a case drain line?
Mechanic: Curtis B., Technician replied 1 year ago

Anything over 10 psi would be excessive.

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Customer reply replied 1 year ago
If I would decide to plumb the case drain directly into the reservoir, then I would probably want to install a filter in the line as well. Is that correct? In your opinion, what are the pros and cons to this approach.
Mechanic: Curtis B., Technician replied 1 year ago

I would add a filter if going direct.  No cons, only pro, as it will catch any debris, and give you an idea as to what is coming out of the pump/motor/case.

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Customer reply replied 1 year ago
Thank you for your help
Mechanic: Curtis B., Technician replied 1 year ago

Thank you.

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Curtis B.
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Category: Construction and Road Equipment
Satisfied Customers: 43,568
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