different ways to convert to non-lockup

[Blazer406]

I have a BRF tranny I got from a former GN owner that was his spare tranny. It was originally built for another local GN several years ago... and has sat in the garage and never been installed best I can tell. It was converted to non lockup. I want to convert it back. I talked to Chris at CK many months ago... and he said that one way (which is apparently more common) is to replace the TCC valve in the front pump with a 1 piece unit. Well... I can't get the sucker out. I got the snap ring off... and the disk with the little hole in it. behind that was 2 springs... then the valve.... which is still in there... I can't seem to get it out...even with the tranny sitting on the valve body... and the valve looking at the ground....I can stick a 3/8 extension up the hole... and contact the valve... which jiggles a little back and forth based on the sound... but the @#$@# won't fall out.

Upon further inspection looking in CK's manual.... the diagram shows the snap ring... then the valve... then the spring/s. Looks like this guy put the valve in first... then the springs... then the disk with the hole in it.... then the snap ring. Is this another way to convert one to non lockup? He had also removed all the wiring for the TCC.

Any ideas?

I am going to disassemble the tranny all the way anyway... to check everything out and change a few things inside it... I would like to convert it back over to lock-up status.

Another thing he did kinda puzzles me.... the o-ring is still on the end of the input shaft... and the check-ball is still in the little cage.... I would have thought that both of these would have been removed to properly convert one to non-lockup.

 

[broke1]

You sure its a nlu and not had the check ball removed from the input shaft trying to make it shift harder?I had a trans like this....

 

[Lee Thompson]

I believe they

They have installed the spool first on purpose and I believe you will find a set screw holding the spool in place. Have to dis assemble the pump to get to it. If I am correct the pump had a cup plug in where the set screw is now. If going back to lockup you will need to drill the correct size hole in the set screw and make sure the set screw doesn't protrude into the bore and stop the spool from stroking.
You are correct in that the 2 springs go in first.
Haven't forgot you--been hibernating since Christmas with the a cold.
Best of luck.

 

[Blazer406]

I'm still "getting ready" to proceed with teardown. I began fabricating a few things last night.

I am about 90% through with building a pump removal tool.

I have a mockup of a fixture that bolts to my engine stand to hold the tranny so I can rebuild it. I wanted it to be able to rotate as well as hold it vertical so it would be easy to get the shafts/drums/pump out.... then be able to rotate 90 deg... and hold the valve body up so it would be easy to assemble. I am making this out of unistrut... welding the pieces together. I am making it kind-of universal so it will still accomidate other transmissions. Maybe I'll get to finish this tonight.

I think there is another tool I will need to compress the springs in one of the drums... but not sure yet... CK's book shows a tool that bolts through some bellhousing bolts... and compresses some springs....I'll have to fabricate/buy all these specialty tools as I go....

 

[Lee Thompson]

tools

You will HAVE to have a low-reverse removal tool. I don't have a pump removal tool--just my large screwdriver--altho sometimes it would be easier with one.

 

[Blazer406]

They have installed the spool first on purpose and I believe you will find a set screw holding the spool in place. Have to dis assemble the pump to get to it. If I am correct the pump had a cup plug in where the set screw is now. If going back to lockup you will need to drill the correct size hole in the set screw and make sure the set screw doesn't protrude into the bore and stop the spool from stroking.
You are correct in that the 2 springs go in first.
Haven't forgot you--been hibernating since Christmas with the a cold.
Best of luck.

I was hoping it would be easy... I guess I will have to see when I get in there....

Hopefully I will be disassembling within the next week.

 

[V6RACER]

I know a guy who knows how to build them and has this awesome set of tools... And he lives near you. lol

 

[Blazer406]

I know a guy who knows how to build them and has this awesome set of tools... And he lives near you. lol

:biggrin:

 

[bison]

Sounds like he has the old AC version of the non-lock conversion. As Lee said there will be a set screw in the pump housing. You will need to put in the lock up valvetrain and grind the set screw so that it does not interfere with the valve and drill a small orifice through it. Im not sure n the size. Someone else that has a pump apart will hopefully chime in. Then simply loc-tite the the drilled screw in place and be sure the valve action is un-affected. Or you can aquire another pump assembly and swap it out.