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AYC and ACD fluid change

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Old Feb 27, 2013, 04:25 PM   #1
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AYC and ACD fluid change

Can you change the AYC / ACD fluid without using the MUT tools? Im not interested in bleeding the system but just drain and top off the fluids. Freaken AYC/ ACD pump is constantly making a whinning noise now. Hoping this solution helps.
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Old Feb 27, 2013, 07:25 PM   #2
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Update. U do not need the Mut tool to drained the ACD fluid. I repeat, the Mut tool is not required to drain the ACD fluid. I just did mine, no service light or what so ever. Peace. Close thread.

Last edited by Gqracer; Feb 27, 2013 at 08:31 PM.
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Old Mar 1, 2013, 10:30 AM   #3
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You mean you drained some and then added more, without actually flushing it, or did you just top it off?
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Old Mar 1, 2013, 11:06 AM   #4
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1. This is not a service fluid, meaning it doesn't require maintenance.
2. This is not a fluid to be simply drained and refilled; you need to properly bleed the system or risk frying the pump.
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Old Mar 1, 2013, 11:10 AM   #5
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Thank god there aren't already 15 threads on this. Can someone please start another to add even more confusion?
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Old Mar 2, 2013, 08:35 AM   #6
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Quote:
Originally Posted by Johnr352 View Post
You mean you drained some and then added more, without actually flushing it, or did you just top it off?
Drained and add only. Do not bleed.
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Old Mar 2, 2013, 11:40 AM   #7
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Update.
Went to the dealer today and bleed the asc system for $130 bux. The humming noise from the pump went away.
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Old Apr 5, 2013, 08:50 AM   #8
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Transfer case takes 2 different fluids. 1 is the actual gear oil. Mitsubishi calls for SAE 90 weight oil. I like to use the original Diaqueen stuff. 2 is the atf that operates internal solenoids (reservoir in trunk) and allows the system to transfer torque as needed to the wheels. The ATF does not mix with the transfer case oil or needs to be serviced. The only time it needs to be replaced and the system bled is if it comes apart for service, or if you take the lines off and let the fluid leak out. You do not need to drain the atf as part of routine maintenance.
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