5HP18 Valve Body rebuild question

[whiskychaser]

The pressure regulator isn't a simple on/off device - the TCM tells it how far to open/close depending on operating conditions. If you want to do it at the tappings, details will be in Bentleys. The consequences of getting it wrong? Too much and you could blow the clutch drum. (Its not the D/G as I mentioned above - that's on a 5HP18 - it will be the F but it goes for the same reason) Too little and there is not enough to apply the clutches. BTW, they did come out with a modified pressure relief valve for the 5HP30. It has a larger shoulder than the original and may be worth a look.

[Frank87]

I am doing a 5HP18. I have removed all parts of the solenoid block to be able to thoroughly clean everything. I have not touched the large Torx nut. I reinstalled everything exactly the way it came out.

Sadly, the internet does not offer any guide on the pressure system at all. I can consult the Bentley manual to test pressure but I would still not know how to properly adjust it.

[whiskychaser]

I am doing a 5HP18. I have removed all parts of the solenoid block to be able to thoroughly clean everything. I have not touched the large Torx nut. I reinstalled everything exactly the way it came out.

Sadly, the internet does not offer any guide on the pressure system at all. I can consult the Bentley manual to test pressure but I would still not know how to properly adjust it.

Unfortunately, that is the case. Unless you have the odd $31k to spare and want to buy one of these :-) :
http://europeantransmissionscom.x-sh...me.php?cat=628

In practise, you are only going to be able to find out what the line pressures are. Are you installing the valve body kit?