Nomad valve body dismantle

[jff45]

I know this will have limited interest but I noticed that the RE4R03A rebuild threads don't go into much detail on how to overhaul the valve body.
This one happens to be a Nomad valve body that I bought used from a trans that had suffered an oil pump mishap so it had to be completely dismantled to make sure it was spotless.

First you need to print out the relevant pages of the FSM and preferably put them under plastic.

http://i257.photobucket.com/albums/hh207/JFF45/RE4R03A%20pics/IMG_1909_zpse275b2e1.jpg

I also have the pages for the full trans overhaul in there as well.

Prepare a nice clear workspace for yourself. I have this fairly big steel leg laminated table I got from the dump for $10. I used black plastic initially but it didn't like the ATF so I had to work directly on the table.
There are those who apparently like to do these kinds of jobs with bourbon on hand but I don't drink so diet Coke does the job for me :)

http://i257.photobucket.com/albums/hh207/JFF45/RE4R03A%20pics/IMG_1911_zps6d674580.jpg


It's really important when doing this kind of work, where parts need to go back in the correct order, to have some way of clearly and logically laying out those parts.
I simply cut a length of aluminium flashing (Bunnings) and used some stainless rods I had to form a corrugated sheet. It bends easily by hand and takes 5 minutes to make.

http://i257.photobucket.com/albums/hh207/JFF45/RE4R03A%20pics/IMG_1912_zps10fb36b6.jpg


Simply follow the FSM and you can't go wrong.

Wholesale Autos, who supply these valve bodies, make there own laser cut separator plate. Most shift kit makers (TransGo, Superior, etc) supply drill bits to modify the plate so this is obviously a more professional approach.

http://i257.photobucket.com/albums/hh207/JFF45/RE4R03A%20pics/IMG_1913_zps010820cd.jpg


The upper body has the majority of the valves so we start there.

http://i257.photobucket.com/albums/hh207/JFF45/RE4R03A%20pics/IMG_1927_zps5d3cda58.png

The pressure regulator (2nd from top) almost certainly has been modified judging by the red coloured spring. Most shift kits modify it as well.

5th from the top and 3rd from the bottom are machined parts that don't match the FSM. These are called Shuttle shift valves and originally they move against a spring with an end plug for the locking pin.
These have the pin slot machined in the ends so they are effectively locked solid which is the obvious reason they no longer have a spring either.
Here's a clearer pic of the parts..

http://i257.photobucket.com/albums/hh207/JFF45/RE4R03A%20pics/IMG_1918_zps65c59c7c.jpg

Then we do the lower body. Same system, line the bits up in the corrugations in the order and sequence in which they're removed.

http://i257.photobucket.com/albums/hh207/JFF45/RE4R03A%20pics/IMG_1941_zps3bf48f2d.jpg

http://i257.photobucket.com/albums/hh207/JFF45/RE4R03A%20pics/IMG_1943_zps5c830306.jpg

I'll add the correct dimensions for the missing accumulator spring once I finally have it.

[jff45]

I'm also rebuilding a complete trans to go with my turbo install but, as there are already a couple of very good threads on the subject, I don't plan on adding another but I thought a couple of things might help.
I was in Costco the other day and saw a pile of aluminium throw away baking trays for $9.95. Thought to myself I'm sure they'd come in handy in the shed for bits. Sure enough..
Add some Glad wrap and we can see what we have at a glance.
This is on my welding table which has castors so I can move it around as I wish.

http://i257.photobucket.com/albums/hh207/JFF45/RE4R03A%20pics/IMG_1972_zps00e822f5.jpg

Also thought I'd make life easier for myself and have the trans on a stand so I knocked this up yesterday from bits of scrap. Once again, it's good to have a welder handy..

http://i257.photobucket.com/albums/hh207/JFF45/RE4R03A%20pics/IMG_1977_zpsde38698b.jpg

[Sherro]

Nice work there mate you might want to stand the trans up on its end once you get the output shaft locked in to assemble the rest that way everything will stay put and get a tub of petroleum jelly to hold bearings and thrust washers in place, the missing spring will be a shift kit mod. Enjoy

[NissanGQ4.2]

Looks familiar John and yes I do prefer 2 work with bourbon.

Great job, will have 2 make this thread a sticky as well:)

How were your clutch packs looking?

And please add another thread if you have the time and photo's of the rebuild, can never have 2 many

[jff45]

Nice work there mate you might want to stand the trans up on its end once you get the output shaft locked in to assemble the rest that way everything will stay put and get a tub of petroleum jelly to hold bearings and thrust washers in place, the missing spring will be a shift kit mod. Enjoy

No, the missing spring is for the D accumulator and is supplied with the Nomad valve body. I bought this Nomad secondhand and didn't get the right spring with it.
I started a thread recently asking about the spring dimensions but couldn't find any info.
I meant that I'll add the info in this thread once I have it so it's there for future reference..

Just re-read and might have misunderstood your post. Did you mean the shuttle shift valve springs that are no longer required?
If so, yes, I believe it's part of the design of this type of reprogrammed valve body.

[jff45]

Looks familiar John and yes I do prefer 2 work with bourbon.

Great job, will have 2 make this thread a sticky as well:)

How were your clutch packs looking?

And please add another thread if you have the time and photo's of the rebuild, can never have 2 many

Clutch packs are in really good nick. I bought this trans with a complete TB45E engine from someone who did a LS1 conversion and he said he had been told the trans had been rebuilt but he had no proof.
The TC is clearly not original and the whole trans is very clean inside.

I'll take a few pics and post them.

I bought the Q45 Infinity rebuild kit because it will have the extra plates that I want to try to fit. I want this to be a pretty strong trans for my turbo install.

[Ben-e-boy]

It is nice to see some good tech here. keep it up :)

[Sherro]

John if your after a spring for the D accumulator try Transwreck at Underwood they deal in auto transmissions.

http://www.transwreck.com

[jff45]

John if your after a spring for the D accumulator try Transwreck at Underwood they deal in auto transmissions.

http://www.transwreck.com

I already have 2 original spec springs for the D accumulator. I have the spring from the trans I've just dismantled and another, exactly the same, that was supplied with the secondhand Nomad valve body.
What I'm trying to find (and my mate might possibly have found) is the modified spring that Wholesale supply with this valve body.
I started a thread about this a few days ago asking if anyone knew the dimensions of this Nomad spring.

[jff45]

I received my rebuild kit from the US yesterday and so was able to compare the standard TransTec gaskets with those from the Nomad and found they were absolutely identical.
I thought I needed to be sure of this because, as Wholesale Autos make their own separator plate, they might also have made some changes to the gaskets for enlarged passages or whatever.

[jff45]

Finally got around to fitting this Nomad valve body yesterday.
It was 36 degrees in the shed so I didn't feel inclined to spend all day. I was just about to start pouring the ATF back in when I noticed a nice clean magnet sitting on the bench. Could have been worse - I've read some people forget to connect the manual valve..
It's such a nice feeling when you select reverse and see the revs drop so you know you can at least get it back down off those ramps..

The valve body I removed has a TransGo shift kit I fitted about 5000 kms ago (also the reason I very cleanly recuperated the 8 lts of Transmax Z) so I wasn't too surprised to find no real big difference between the 2. I didn't drive it far so I'll probably get a better idea once I've used it a bit.
I did remove the 1k Ohm resistance from the line pressure circuit and refitted the original 12 Ohm earlier in the week.

Now I can get back to building my Infinity Q45 spec trans for the turbo build.. I'm taking a few pics along the way to maybe do a thread about it later..