Vintage Oldsmobiles Curved Dash, Limited Touring, Models 40, 53, 66; Series 60, 70, 90

Fuel pump rebuild and found this

Thread Tools
 
Search this Thread
 
Old Aug 7, 2024 | 07:44 AM
  #1  
Mikeyt's Avatar
Thread Starter
Mikeyt
 
Joined: Apr 2024
Posts: 356
From: NC
Fuel pump rebuild and found this

Pump has been into before. Screw heads show signs so not sure if it happened then or in use.
Is it fubar or will it be ok?
The whole lip is nicked up so I don't think it seals to anything.


Old Aug 7, 2024 | 07:46 AM
  #2  
Mikeyt's Avatar
Thread Starter
Mikeyt
 
Joined: Apr 2024
Posts: 356
From: NC
This is before I removed seal. Just evidence I didn't do it.😁
Old Aug 7, 2024 | 07:53 AM
  #3  
Vintage Chief's Avatar
Running On Empty
 
Joined: Jul 2018
Posts: 26,063
From: Earth
Best to provide model, year, engine to get the best help possible.
Old Aug 7, 2024 | 07:59 AM
  #4  
Mikeyt's Avatar
Thread Starter
Mikeyt
 
Joined: Apr 2024
Posts: 356
From: NC
Oops

1962 98 394ci. Dual action pump no ac
Old Aug 7, 2024 | 08:02 AM
  #5  
Vintage Chief's Avatar
Running On Empty
 
Joined: Jul 2018
Posts: 26,063
From: Earth
I guess you have two threads going regarding this fuel pump...sorry, can't help...outside my wheelhouse. Good Luck.


Old Aug 7, 2024 | 09:55 AM
  #6  
Mikeyt's Avatar
Thread Starter
Mikeyt
 
Joined: Apr 2024
Posts: 356
From: NC
I posted this since the other thread also included water pump.
Old Aug 8, 2024 | 05:24 AM
  #7  
Mikeyt's Avatar
Thread Starter
Mikeyt
 
Joined: Apr 2024
Posts: 356
From: NC
To answer my question it appears the chip in the casting will not be an issue.
I've got vacuum on vac side and suction on fuel side
Old Aug 8, 2024 | 06:16 AM
  #8  
Vintage Chief's Avatar
Running On Empty
 
Joined: Jul 2018
Posts: 26,063
From: Earth
Mike - I think you're likely correct about this. It appears the circular lip functions as a guide to secure whatever it is which slides/goes into the orifice itself - more or less evident by the numerous chips on that lip already from many removal & re-installations. Likely the "lip" plays no part in the actual sealing but instead acts as a holder. Good luck.
Old Aug 8, 2024 | 08:31 AM
  #9  
Mikeyt's Avatar
Thread Starter
Mikeyt
 
Joined: Apr 2024
Posts: 356
From: NC
There is a spring that goes in there but it is much narrower than the ring. Only other thing I was thinking is a bump stop for the diagram ring as that seems to be the only thing that may touch it. 🤷‍♂️
It definitely doesn't seal anything.
Old Aug 8, 2024 | 08:47 AM
  #10  
Supernice88's Avatar
Art S
 
Joined: May 2021
Posts: 903
From: Warwick, RI
A closeup view of the sectional view of the pump from the book Fig 8-68 shows that feature piece's function is to keep the spring of the fuel diaphragm from walking inside the housing. A small piece missing should not effect it.
Old Aug 8, 2024 | 10:47 AM
  #11  
Vintage Chief's Avatar
Running On Empty
 
Joined: Jul 2018
Posts: 26,063
From: Earth
Originally Posted by Supernice88
A closeup view of the sectional view of the pump from the book Fig 8-68 shows that feature piece's function is to keep the spring of the fuel diaphragm from walking inside the housing. A small piece missing should not effect it.
There you go. Art to the rescue. Nice job, Art.
Old Aug 8, 2024 | 12:00 PM
  #12  
Mikeyt's Avatar
Thread Starter
Mikeyt
 
Joined: Apr 2024
Posts: 356
From: NC
Thanks Art
the spring in my pump sits in and below that lip nothing like that picture where it sits around the lip. That's why I was a bit confused.
This pumps been worked on before so who knows what they put in there.
Old Aug 8, 2024 | 12:18 PM
  #13  
Supernice88's Avatar
Art S
 
Joined: May 2021
Posts: 903
From: Warwick, RI
Thanks Norm.


Last edited by Supernice88; Aug 8, 2024 at 12:22 PM. Reason: more info
Old Aug 8, 2024 | 12:22 PM
  #14  
Supernice88's Avatar
Art S
 
Joined: May 2021
Posts: 903
From: Warwick, RI
I meant fig 8-66.
Old Aug 8, 2024 | 12:31 PM
  #15  
Vintage Chief's Avatar
Running On Empty
 
Joined: Jul 2018
Posts: 26,063
From: Earth
Or fig 8-68

You're the man, Art. Good job.
Old Aug 8, 2024 | 12:33 PM
  #16  
Vintage Chief's Avatar
Running On Empty
 
Joined: Jul 2018
Posts: 26,063
From: Earth
About the only thing I'm good for is making images....
(those I've stolen, of course)




Old Aug 9, 2024 | 04:24 AM
  #17  
Greg Rogers's Avatar
Registered User
 
Joined: Jan 2009
Posts: 5,572
From: Harrison, Michigan
Interesting, I have heard of vacuum pumps as part of fuel pumps but never understood what they were. Thanks!
Old Aug 9, 2024 | 06:17 AM
  #18  
Mikeyt's Avatar
Thread Starter
Mikeyt
 
Joined: Apr 2024
Posts: 356
From: NC
Originally Posted by Greg Rogers
Interesting, I have heard of vacuum pumps as part of fuel pumps but never understood what they were. Thanks!
This was a first for me also.
Alot of the older cars used them to run the wipers apparently. The vacuum side has wipers stamped on it on mine even though it runs the ventilation system.
It's really a simple system once you get past the initial fear and understand how it works.
Old Aug 9, 2024 | 06:43 AM
  #19  
tnswt's Avatar
'70 4-Speed W Machine
 
Joined: Feb 2020
Posts: 1,248
From: North GA
I've found this video to compliment the verbiage found in many service manuals regarding the rebuild of double action fuel pumps. Regardless of the applicable year, many of the pumps are very similar in design. Once one rebuild is accomplished the following rebuilds come so much easier.

Old Aug 9, 2024 | 06:55 AM
  #20  
Vintage Chief's Avatar
Running On Empty
 
Joined: Jul 2018
Posts: 26,063
From: Earth
Great video. You can see how that metal (casing) lip on the fuel pump side could get damaged quite easily if you pry on it trying to remove the seal. Instead, he shows how to simply use a screw driver from the underside (vacuum pump side) to pop out the seal w/ a screwdriver. I like.
Old Aug 9, 2024 | 09:56 AM
  #21  
Supernice88's Avatar
Art S
 
Joined: May 2021
Posts: 903
From: Warwick, RI
He has a multitude of videos for other fuel pump rebuilds. I've watched many of them. What I like about the videos is his calming demeanor and voice, no annoying back ground music and pretty easy to follow with good explanations.
Old Aug 9, 2024 | 11:40 AM
  #22  
Mikeyt's Avatar
Thread Starter
Mikeyt
 
Joined: Apr 2024
Posts: 356
From: NC
Originally Posted by tnswt
I've found this video to compliment the verbiage found in many service manuals regarding the rebuild of double action fuel pumps. Regardless of the applicable year, many of the pumps are very similar in design. Once one rebuild is accomplished the following rebuilds come so much easier.

Fuel Pump Rebuild Video
Yes it is a good video. Thanks for posting.
Art posted this video on my original thread before I took the pump apart. On the video he states not to damage that ring but never said it would be fine as long as it's not too bad so I got worried when I found mine damaged.
I only had 2 hours sleep due to tornado warnings all night so I guess my worry meter was already pegged and panic set in before I researched it more.
It's together, cleaned up and on the car.
I hope to crank it over in the next few days when I get everything else back together.

Thanks everyone👍
Old Aug 9, 2024 | 11:44 AM
  #23  
Vintage Chief's Avatar
Running On Empty
 
Joined: Jul 2018
Posts: 26,063
From: Earth
Mike - Not sure where you are in NC. I'm on the coast (Beaufort). We received a whopping total of ~1.75". I'm not complaining. No serious tornado threats, no flooding, small limbs/branches down. Next one on the way...roll the dice.
Old Aug 9, 2024 | 12:43 PM
  #24  
Mikeyt's Avatar
Thread Starter
Mikeyt
 
Joined: Apr 2024
Posts: 356
From: NC
Hey kinda neighbor👍🙂
I'm in Duplin county. Beulaville. We got swamped.

They just confirmed an F3 in Wilson County just North of us. Sadly one person lost their life.
Old Aug 9, 2024 | 03:18 PM
  #25  
Vintage Chief's Avatar
Running On Empty
 
Joined: Jul 2018
Posts: 26,063
From: Earth
Sorry, that's right I think I asked you previously. I used to drive through Beulaville each week (Rte 24) for a couple years for a customer engagement in FayetteNam. Some years ago when those tornadoes came up from Joplin, Missouri I recall homes & trees turned to matchsticks along Rte 24. Really, really bad remember that one? F3 is a biggie. Remember Mathew and Lumberton entire area flooded everywhere - sad.
Old Aug 9, 2024 | 03:50 PM
  #26  
Mikeyt's Avatar
Thread Starter
Mikeyt
 
Joined: Apr 2024
Posts: 356
From: NC
I've only been here 3 years but have heard stories. Florence did a number here. Many houses never rebuilt.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
eggydrummer
Big Blocks
10
Jun 18, 2024 03:31 PM
carnutz
Vintage Oldsmobiles
8
Mar 31, 2024 10:49 AM
F85_1965
General Questions
2
Aug 30, 2022 07:01 AM
704424spd
Parts For Sale
0
May 9, 2022 05:42 PM
boese1978
General Discussion
7
Sep 27, 2020 08:15 AM




All times are GMT -7. The time now is 03:01 PM.