Alternator Adjustment Bolt

Discussion in 'Parts wanted' started by Brett Slater, Jun 11, 2019.

  1. Brett Slater

    Brett Slater Super Moderator Staff Member

  2. 1969RIVI

    1969RIVI Well-Known Member

    Hey Brett I don't think any of these are what you're after but by chance one is right let me know I'll mail it to you. That's all I got in my bolts bin from the Riv
     

    Attached Files:

  3. Brett Slater

    Brett Slater Super Moderator Staff Member

    Thanks for taking the time to post but no go.
     
  4. 1969RIVI

    1969RIVI Well-Known Member

    I'll keep my eyes open for ya!
     
    Brett Slater likes this.
  5. TORQUED455

    TORQUED455 Well-Known Member

    DB2E5097-F9F6-4374-BBCE-A42844F9F5E3.jpeg 1D9DFC95-AF58-4FC0-B982-0001D859E39A.jpeg 5/16”-18, from under the head to the end is 1-1/4”
     
  6. mrolds69

    mrolds69 "The Cure"

    Bob, that's not an alternator bolt, that's a body bolt. It's 1" from the back of the head to the end, and threaded to the end. The right bolt and washer end flush to the alt.
     
  7. gsfred

    gsfred Founders Club Member

    Just pulled these 2 off of a 70 Riv, and a 70 Lesabre 455. Both cars have air. Both have 3 hash marks, and a TR on them.
     

    Attached Files:

    mrolds69 and 1972 Stage 1 like this.
  8. 1972 Stage 1

    1972 Stage 1 Well-Known Member

    In my opinion, those that Fred posted are correct for a 70.
     
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  9. mrolds69

    mrolds69 "The Cure"

    Ok, I did look in my garage because I know I had a set of 70 alt bolts I personally took off and bagged. That set has a bolt with the 3 slashes (Grade 5) and a small triangle (Canadian bolt maker mark). It has no letters. I don't know if it was a Canadian car. Flint is not too very far from Canada. My 70 has an indented head bolt. When you look at the assembly manual there is a section in the corner of revisions. The revisions are mostly illegible in my copy. My best guess is that several different makes/types of bolts were used. It's the same for belts, hoses, tires, convertible tops, etc. I'd agree with James and Fred that those bolts are one of the typical bolts that were used. It's not something I'd lose sleep over at all.
     
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  10. copperheadgs1

    copperheadgs1 copperheadgs1

    0DD96FFA-86D5-4A22-8F25-ACF1FD0EED79.jpeg Frank, sounds like he has an indented head. That’s what I have found. I have never found one with a washer. That’s why they used a loose washer. Check out this diagram guys. There is no washer on that bolt.
     
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  11. copperheadgs1

    copperheadgs1 copperheadgs1

    D0959842-8D6B-405B-A67D-E00AFB910C10.jpeg When these guys are picking our bones will any of this matter? They were in a neighbors driveway on my way home. Going to be 60 soon. Hope they are not trying to tell me something?
     
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  12. Daves69

    Daves69 Too many cars too work on

    That is what is on my 69 4 Speed original alternator. 3 hash marks and TR.
     
    1970 STAGE 1 and 1972 Stage 1 like this.
  13. copperheadgs1

    copperheadgs1 copperheadgs1

    No attached washer Dave? That is the real sticking point. Different suppliers may have supplied different heads. I find the TR screw at the water pump end of the arm.
     
    Last edited: Jun 25, 2019
  14. BuickV8Mike

    BuickV8Mike SD Buick Fan

    Or with captive washer?
     
  15. gsfred

    gsfred Founders Club Member

    No captive washers on mine.
     
  16. Brett Slater

    Brett Slater Super Moderator Staff Member

    Check your PM box.
     
  17. Daves69

    Daves69 Too many cars too work on

    There is no captive washer. Bolt is identical to what Fred posted. Also found a TR bolt at the water pump end of the arm. (no washer)
     
  18. Stage 2 iron

    Stage 2 iron 480 IRON HEAD STAGE 2

    These might be what you're looking for not sure if they're correct for 70 but definitely 71 and 72 they have the same head design IMG_3050.JPG IMG_3051.JPG IMG_3052.JPG IMG_3053.JPG
     
  19. BuickV8Mike

    BuickV8Mike SD Buick Fan

    What does the N.S. for the washer designate? Brett, What thickness washer are you planning on using. Cheers, Mike
     
  20. mrolds69

    mrolds69 "The Cure"

    I'm not sure exactly what N.S. stands for, but it means there's like no service number or stocking number. It's non specific and you can just use open stock. Back in those days, all SAE rated type hardware was kind of heavy duty and universal compared to modern stuff. Now if you go for a washer like that, you look in the draw and they are like 6 different thicknesses!
     

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