Transmission Accumulation-Circuits Explained
For a given gear change there are 2-3 checkballs involved on a 4L80E. At that point you're looking a near complete hydraulic circuit. There are professional builders who don't understand the hydraulics, even on an elementary level. It could be broken down into individual checkballs and how they operate but those that genuinely want to learn the hydraulics will seek the charts and study themselves.
Staging Lane
Joined: Jun 2023
Posts: 51
Likes: 0
For a given gear change there are 2-3 checkballs involved on a 4L80E. At that point you're looking a near complete hydraulic circuit. There are professional builders who don't understand the hydraulics, even on an elementary level. It could be broken down into individual checkballs and how they operate but those that genuinely want to learn the hydraulics will seek the charts and study themselves.
Staging Lane
Joined: Jun 2023
Posts: 51
Likes: 0
Thank you, yes indeed. As usual, you have spoken well; and I will say that I value your input.I had decided that I was not going to get into the details or discuss these circuits/ their function and corresponding circuits in any greater detail.
I feel that the more simple explanation and diagrams will reach more people and relate to more people.
The title alone is boring enough to keep most people away...
I don't want to lose more people by going over their heads, when a simple explanation can get 70% of the job done.
Should the forum members decide that they wish to be further educated, then we can discuss:
-Pressure vs Volume
-Surface area
-Valve-Land size and placement
-Spring force (alone or in combination with fluid force)
-Orificing into/ out of these circuits
-Circuit bias
-Etc
Last edited by Jamesv; Jun 20, 2023 at 08:16 PM.
TECH Resident
Joined: Mar 2012
Posts: 871
Likes: 411
From: Texas
If you give me an email to send it to, I can give you a badass manual with all of the hydraulic circuits.
However, if you do a search for "GM 4l60E service manual", there are numerous other sites that have it available for download. Probably faster that way.
Staging Lane
Joined: Jun 2023
Posts: 51
Likes: 0
I have the PDF version of the official GM service manual for these transmissions, but I can't link it on here because it's slightly over the data limit.
If you give me an email to send it to, I can give you a badass manual with all of the hydraulic circuits.
However, if you do a search for "GM 4l60E service manual", there are numerous other sites that have it available for download. Probably faster that way.
If you give me an email to send it to, I can give you a badass manual with all of the hydraulic circuits.
However, if you do a search for "GM 4l60E service manual", there are numerous other sites that have it available for download. Probably faster that way.
Is this the manual you have?
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