Wanted: Chevrolet brake tee junction / connector / fitting

Alex van de Wetering · #1 09-05-13, 23:55

Hi everyone,

I am looking for a "brake tee" "Chevrolet # 596883".

As far as CMP's are concerned, it seems to be unique to the C8, but obviously it was also used in Civvy Chevs. Sadly I can't seem to find the part at "Jim Carter", "Filling station" or "Chevs of the 40's".
I am now looking at making a bracket and using a more common fitting, but just to be sure I like to ask if anyone has one of these available?

Alex

p.s. Mine is beyond use as one of the brake pipe fittings has completely fused in the brass block and after several attempts in getting it out, the actual brass internals were damaged.

Brad Garner · #2 10-05-13, 00:35

I would take it to a machine shop and see if there is a Helicoil insert for the tubing threads. We did some of those on low pressure lines on Aircraft in the 80's. Low pressure for aircraft I worked on is less than 500 psi.

Phil Waterman · #3 10-05-13, 01:26

Hi Alex

From the picture this looks like it is a 4 way bulk head Tee? Am I correct, if so I think I have seen a source. I just have to remember where.

Remembered where

http://www.obschevy.com/Pages/OurCatalogs.html go to the pickup catalog http://www.parts123.com/PartFrame.as...vrolet_Part_Co then part # 1485718 think it is a 3 way, but give them a call

Cheers Phil

Bob Carriere · #4 10-05-13, 03:17

Hi Alex

A 3 way block is relatively easy to find but a four way...????

Trying to understand how a 4 way block would be connected...?

Rear axles would have a 3 way block....front axle may have a 3 way block

...where would the 4 way block fit on a C8...? does it replace the Y block split on the rear of the master cylinder...?

Added after looking at the pictures again....Your block has a section that fits in the frame and clips in place.... that small hole.... is it used for anything or just a dead end hole...? if it is a dead end hole you are looking for just a 3 way block..??

Bob C.

Paul Dutton · #5 10-05-13, 09:00

If you look at the "branch" of the tee I don't think that is threaded. Just the groove for the C clip to go in. Could that hole hold another clip on other side of where it goes thru chassis for something else maybe? I think it's only a 3 way too and secures on the branch.

Alex van de Wetering · #6 10-05-13, 10:58

Guys,

Thanks for the overwhelming responce! Bob and Paul are on the money; it's indeed a 3-way tee, three openings and the "dummy" branch used to secure the tee to the frame rail. This branch does indeed have a hole, but it't not threaded nor is it open at the end.

The line from the master cylinder enters at one end, the two others are used for the Front left and Front right brake. The rear uses a seperate line straight from the master Cylinder.

The more common tee that Phil and Scott posted is the one I am intending to use if I can't find the proper thing, the C8 also uses this tee on the rear axle. I intend to secure it to the frame with an angle iron bracket (and clip) and I think I should be able to position it close to the original position. I could of course also use the "branch" and the original hole, but that would mean one of the brake lines is coming down from the frame rail.....exposed, so not the way I want to go.
If I use this alternative I would still have to find out what threed the third hole is, as this is normally used to secure a brake hose which uses a different thread than the 7/16-24 of the brake line fittings.

Alex

Paul Dutton · #7 10-05-13, 16:19

Im a Morris Minor restorer at heart and apart from the location of the securing lug and hole they are simelar. Options are, any engineering place should easily knock one up for you, model lathe person or small fabricator, whoever you know!!
second, try an auto one (like morris minor!!) just that it doesnt have the lug for securing thru the chassis BUT it does have a small lug underneath (on your flat section opposite side to the TEE) with a hole in for a 10mm sized bolt!!! Still `looks` the samish and secures thru a small hole (or original with a spacer or couple washers each side!) Bit of paint on the washers and hard to tell difference if you looking for authenticity!!

Look here iis just one example from a specialist http://www.morrisminorspares.net/shop_item.php?ID=1471

Paul Dutton · #8 10-05-13, 16:26

Quote:

Originally Posted by Bob Carriere

Hi Alex

A 3 way block is relatively easy to find but a four way...????

Trying to understand how a 4 way block would be connected...?

Rear axles would have a 3 way block....front axle may have a 3 way block

...where would the 4 way block fit on a C8...? does it replace the Y block split on the rear of the master cylinder...?

Added after looking at the pictures again....Your block has a section that fits in the frame and clips in place.... that small hole.... is it used for anything or just a dead end hole...? if it is a dead end hole you are looking for just a 3 way block..??

Bob C.

They use 4 way blocks AND a securing bolt on Morris Minors and readily available at any specialists!

Alex van de Wetering · #9 18-05-13, 15:35

After looking around the website that Phil (thanks Phil!) posted I found a brake tee that looks identical to mine, but uses a different partnumber (594595). The master parts list also uses the same drawing for both partnumbers. (see pics attached). One seems to be used for the 1/2 ton trucks while the other (mine) was originally used on 3/4 ton trucks.

I wonder what the difference could be.....different threads for the brake lines??? or did all chevy's from the period use the same thread on the brake line fittings?......or could it be that the "branch" is different .....is the actual frame thickness different between 1/2ton and 3/4ton trucks???

I asked the obsChevy guys for thread size and overall measurements, but no responce so far.

Alex

Alex Blair (RIP) · #10 19-05-13, 19:07

Quote:

Originally Posted by Alex van de Wetering

After looking around the website that Phil (thanks Phil!) posted I found a brake tee that looks identical to mine, but uses a different partnumber (594595). The master parts list also uses the same drawing for both partnumbers. (see pics attached). One seems to be used for the 1/2 ton trucks while the other (mine) was originally used on 3/4 ton trucks.

I wonder what the difference could be.....different threads for the brake lines??? or did all chevy's from the period use the same thread on the brake line fittings?......or could it be that the "branch" is different .....is the actual frame thickness different between 1/2ton and 3/4ton trucks???

I asked the obsChevy guys for thread size and overall measurements, but no responce so far.

Alex

Alex ..The threads are Pipe threads..either 1/8" or 1/4" for the bigger fittings...But you will have some combination fittings that will have the pipe tread and flare fitting threads, also the numbers could be different if the branch sizes are different or off set differently,say 45 Degrees rather than 90 Degrees or straight through ..
Then you get M and F (male and female...)
From what i CAN TELL FROM THE DIAGRAM Fitting number 3692044 would be written 1/8"Th FPT(Female pipe thread)x1/4"male compression..
fitting number 3690611 would be written ..1/8th"FPT(Female pip[e thread X 1/4"MF(Male flare)
The rest I would have to have in my hot little hand but the one wit5h the red pointer looks like a 1/16"FNPT (female National pipe thread) in the smallest hole but i am only guessing at that.
Good luck..I really enjoy your postings.
This will probably help..
http://www.mccullochs.com.au/userfil...tification.pdf

It may be a good Idea if you printed this out and kept it in your shop..and then people will be checking in with Alex the Thread Master (European division)..Alex The thread Master (North America) is all ready taken...