pont35cpe

1936 Buick 40 series transmission part #1300501

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Part number has now been identified.. I need a set of sliding sleeve "flat detent springs"(or syncronizer detention spring) for a `36 Buick 40 series 3spd transmission. While doing an inspection with top off noticed one spring is broken off on one end. Anyone have to sell or know where to find these?

Edited by pont35cpe (see edit history)

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Looked at Bobsautomobilia?  They may have some

Or http://nwtparts.com/ Phone them

Or Fusick Olds

 

Not the best scans. If you identify the part number I can look up the parts book to check if used on other years/models

Edit

Is it group 4.397 part 1287260 ?

From 1928-1941 master parts book & 1928-1952 Master parts books

used on 1934-35 S40 S50, 1936-37-38-39 S40, 1940-41-42 S40 S50. 1946-47-48-49-50-51-52 S40 S50

[1.165" ID x 1.415"OD x 0.073" Also included in set 1393488- Group 4.005]

And from 1948 Old master parts book

Group 4.397 part 1287260 1933 thru 1948 all Cost $0.06

 

{a common part}

 

 

1928-41 Master Parts List Chassis pg 90-A.jpg

1928-41 Master Parts List Chassis pg 91-A s.jpg

Edited by 1939_Buick (see edit history)

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I`m thinking 4-400 is the spring, there is 3 of them they fit in grooves of shaft 4-403 and the inside of sleeve 4-414. This part may be common to `34-`38 40 series transmissions, possibly other years. If Bobs has them, I can`t find them in the catalog..

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9 minutes ago, pont35cpe said:

I`m thinking 4-400 is the spring, there is 3 of them they fit in grooves of shaft 4-403 and the inside of sleeve 4-414. This part may be common to `34-`38 40 series transmissions, possibly other years. If Bobs has them, I can`t find them in the catalog..

I cannot see 4-400 in image or listed in the parts books (typo?)

Shaft 4.403 1287295 was used on 1934-35-36 S40

Sleeve 4.414 1295996 used on 1934-35 S50 and 1934-35-36-37 S40

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3 hours ago, 1939_Buick said:

I cannot see 4-400 in image or listed in the parts books (typo?)

Shaft 4.403 1287295 was used on 1934-35-36 S40

Sleeve 4.414 1295996 used on 1934-35 S50 and 1934-35-36-37 S40

I guess I`m confused, is the number 1287260(from your first post)the buick part number for what my shop manual call "flat detent springs".. This picture is from my shop manual, 2 of 3 of the flat detent springs visable in picture, doesn`t show it very good. I can check with Fusick  Thanks..

DSCN5515.JPG

Edited by pont35cpe (see edit history)

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I'm seeing 4-400 (Group 4.400?) laying next to the output shaft (Group 4.403) in the photo of Page 90-A posted above.

 

It sure looks like a synchronizer detent spring to me. Is it missing from the actual parts list?

 

It's 1300501 in Pontiac. I have no way to verify if it is the same part (probably).

Edited by Bloo (see edit history)

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25 minutes ago, Bloo said:

I'm seeing 4-400 (Group 4.400?) laying next to the output shaft (Group 4.403) in the photo of Page 90-A posted above.

It sure looks like a synchronizer detent spring to me. Is it missing from the actual parts list?

It's 1300501 in Pontiac. I have no way to verify if it is the same part (probably).

OK I see I now.

Not at home just now, so do not have the Master Parts books.  Group 4.400 is not listed in the 1928-52 Master Parts book page 170 ( scanned), but may be out of order.

Edited by 1939_Buick (see edit history)
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I would try calling Dave Tacheny. He probably has them. You can best reach him between 4 and 7 pm Central at 763-427-3460. 

 

I have seen similar ones on ebay from time to time. At the moment, there is one listing that claims that they fit 1937-1948. I have no idea if they would also work for you 1936, but here is a link just in case... https://www.ebay.com/itm/New-NOS-OEM-GM-Transmission-Synchronizer-Detent-Spring-1937-1948-Buick-Lot-of-3/183695314323?hash=item2ac5180d93:g:qREAAOSwY7lcbYWd

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I'm guessing those are for 60-80-90, but not sure. I'll see if I can find a Buick parts book when I get home.

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The detent springs look to be approx 3 5/8" in length..

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40 minutes ago, MCHinson said:

I would try calling Dave Tacheny. He probably has them. You can best reach him between 4 and 7 pm Central at 763-427-3460. 

 

I have seen similar ones on ebay from time to time. At the moment, there is one listing that claims that they fit 1937-1948. I have no idea if they would also work for you 1936, but here is a link just in case... https://www.ebay.com/itm/New-NOS-OEM-GM-Transmission-Synchronizer-Detent-Spring-1937-1948-Buick-Lot-of-3/183695314323?hash=item2ac5180d93:g:qREAAOSwY7lcbYWd

Matt, you`re probably right, Dave may be the only source..

4 minutes ago, pont35cpe said:

The detent springs look to be approx 3 5/8" in length..

 

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It's a mistake in the book. I am looking at the 1941 master parts catalog right now.

 

1939_Buick, is your parts book also a 1941?

 

Anyhow the Group 4.400 in the exploded view is incorrect (but correct for Pontiac). I finally found it by looking up the synchronizer sleeve, and looking at things that were close to it in the Buick book. It is Group 4.413, SPRING, synchronizing detention. It doesn't appear in the exploded views (except incorrectly as Group 4.400 on page 90-A).

 

1300501   -   3 per car  -         1934-35 40,50   1936-37-38 40  (For conventional transmission.)

1292280   -   3 per car  -         1936 60,80,90

1298890   -   3 per car  -         1937-38 60,80,90

 

It looks like you need 1300501

 

                                             

 

Edited by Bloo (see edit history)

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23 minutes ago, Bloo said:

It's a mistake in the book. I am looking at the 1941 master parts catalog right now.

 

1939_Buick, is your parts book also a 1941?

 

Anyhow the Group 4.400 in the exploded view is incorrect (but correct for Pontiac). I finally found it by looking up the synchronizer sleeve, and looking at things that were close to it in the Buick book. It is Group 4.413, SPRING, synchronizing detention. It doesn't appear in the exploded views (except incorrectly as Group 4.400 on page 90-A).

 

1300501   -   3 per car  -         1934-35 40,50   1936-37-38 40  (For conventional transmission.)

1292280   -   3 per car  -         1936 60,80,90

1298890   -   3 per car  -         1937-38 60,80,90

 

It looks like you need 1300501

 

                                             

 

Thanks for the info Bloo.. It`d be nice to find some new ones..

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3 hours ago, Bloo said:

It's a mistake in the book. I am looking at the 1941 master parts catalog right now.

1939_Buick, is your parts book also a 1941?

 

Anyhow the Group 4.400 in the exploded view is incorrect (but correct for Pontiac). I finally found it by looking up the synchronizer sleeve, and looking at things that were close to it in the Buick book. It is Group 4.413, SPRING, synchronizing detention. It doesn't appear in the exploded views (except incorrectly as Group 4.400 on page 90-A).

 

1300501   -   3 per car  -         1934-35 40,50   1936-37-38 40  (For conventional transmission.)

1292280   -   3 per car  -         1936 60,80,90

1298890   -   3 per car  -         1937-38 60,80,90

It looks like you need 1300501

 

Yes. The image is from 1928-1941 parts book. I also have 1928-1952, but no transmission image in that book

Agree pg 90-A 4.400 is a typo and should be 4.413 (part 1300501)

The 1928-1941 has an image of a 1936-37 60-80-90 transmission Pg 92-A. In that it is labelled as 4.413 and shown far better, but not in the sleeve

 

In the 1948 Olds Master Chassis Parts Book group 4.413 parts 1300501 is listed as "1934 thru 1938 all" and cost $0.12

 

I would ask NWTransmisson

Edited by 1939_Buick (see edit history)
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This won't help!!

 

My 1928 to 1946 Master Parts Book agrees with Bloo.

 

However my year specific parts book for 1936 models lists the following

GRP 4.400 Part No 1291266 Spring, synchronising detent ( 3 per car ) 1936 Series 40

 

Maybe a part number change?

img-191023141236-001.jpg

img-191023141612-001.jpg

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If Dave does not have them, let me know. I will do some research and find an article written by someone two or three years ago for the Torque Tube II. I don't recall which year his car was, but he made some similar transmission synchronizer detent springs. I don't recall the details but I am sure I can find the article. Finding some original ones would be best, but reproducing them would be another option if you can't find any.  

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Thanks everyone for your input. I wound up finding/buying a "small parts kit" which contains the 3 detent springs.

image.png

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That's good.

Who did you but if from?

Does it all have GM part numbers?

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2 hours ago, 1939_Buick said:

That's good.

Who did you but if from?

Does it all have GM part numbers?

I found the kit on ebay it was the last one for `36 Buick 40 series transmission. Seller has some `37-`38 kits which has most the same parts of the `36 plus a few more.  The kit doesn`t list part numbers, kit is old stock, made by Dittmer Gear and Mfg Co. part# PO-609A, bought from Old Car Parts NW, Inc. Kent, Washington. Here is a picture of the 37-38 kit #PO610A

eBay item number:
362672367561image.png.cd04f7785a57633710c131565dc85abe.png

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