1953-98 fuel pump - how to rebuild available anywhere ?
#1
1953-98 fuel pump - how to rebuild available anywhere ?
Hi Guys,
yesterday my wife and me were cruising with our 1953 olds 98, when stopping we smelled some fuel taste.
When checking I saw the fuel pump is leaking a little.
My Shop manual does not show the fuel pump so someone could make me happy to tell me how to and show me how the pump works inside
I would like to know all details before taking the pump out, I want to understand how it works before I take it out.
Thank you very much
yesterday my wife and me were cruising with our 1953 olds 98, when stopping we smelled some fuel taste.
When checking I saw the fuel pump is leaking a little.
My Shop manual does not show the fuel pump so someone could make me happy to tell me how to and show me how the pump works inside
I would like to know all details before taking the pump out, I want to understand how it works before I take it out.
Thank you very much
#2
here is a link that will walk you through this project. Take pictures and make notes on the position of the valves, they can be reversed, a vice is handy and helps free up a hand....Tedd....
Last edited by Tedd Thompson; October 4th, 2015 at 08:13 AM.
#3
thank you, the pump in my olds seems to be a little different one,but I am sure the vid will help
here you can see, where fuel was dropping out
fuelpump_zpsgvne0qyv.jpg
So I had to take some paper and mix it with glue and put it there to stop the dropping and to be able to drive home - it helped a little
here you can see, where fuel was dropping out
fuelpump_zpsgvne0qyv.jpg
So I had to take some paper and mix it with glue and put it there to stop the dropping and to be able to drive home - it helped a little
#4
is there anyone that can tell me what number has to be on the carb to be the original one ?
I have found "MADE IN USA" and also a number on the carb, what number should it be for a 1953 Olds 98 ?
c14_zpsvkftfews.jpg
c13_zpsg6n21p8d.jpg
I have found "MADE IN USA" and also a number on the carb, what number should it be for a 1953 Olds 98 ?
c14_zpsvkftfews.jpg
c13_zpsg6n21p8d.jpg
#5
There was a procedure to stamp the last 4 digits of the AC number on the flange of the pump. My Hollander interchange book shows 2 possible for 1953:
AC#1539294 1949-1954
AC#1539775 1952-Early 1954
It doesn't say what the differences were in the two pumps.
The part number shown in the Oldsmobile parts book is:
1949-1954 8-Cyl. 5591621
#6
pump - pump - pump
you are right, english isnt my mothers language so that things happen to me some times
thank you for your answer - but what you mean AC#
mine is a early 53, delivered in February
so this should be there ? AC#1539775 1952-Early 1954
nr_zpsykxnjrvq.jpg
what I can read on that flange is 4529 ll
nr2_zps1yqszhwb.jpg
and also AC MADE IN USA
you are right, english isnt my mothers language so that things happen to me some times
thank you for your answer - but what you mean AC#
mine is a early 53, delivered in February
so this should be there ? AC#1539775 1952-Early 1954
nr_zpsykxnjrvq.jpg
what I can read on that flange is 4529 ll
nr2_zps1yqszhwb.jpg
and also AC MADE IN USA
Last edited by stocki26; December 20th, 2015 at 10:26 PM. Reason: pics added
#7
pump - pump - pump
you are right, english isnt my mothers language so that things happen to me some times
thank you for your answer - but what you mean AC#
mine is a early 53, delivered in February
so this should be there ? AC#1539775 1952-Early 1954
what I can read on that flange is 4529 ll
and also AC MADE IN USA
you are right, english isnt my mothers language so that things happen to me some times
thank you for your answer - but what you mean AC#
mine is a early 53, delivered in February
so this should be there ? AC#1539775 1952-Early 1954
what I can read on that flange is 4529 ll
and also AC MADE IN USA
#8
pump - pump - pump
you are right, english isnt my mothers language so that things happen to me some times
thank you for your answer - but what you mean AC#
mine is a early 53, delivered in February
so this should be there ? AC#1539775 1952-Early 1954
what I can read on that flange is 4529 ll
and also AC MADE IN USA
you are right, english isnt my mothers language so that things happen to me some times
thank you for your answer - but what you mean AC#
mine is a early 53, delivered in February
so this should be there ? AC#1539775 1952-Early 1954
what I can read on that flange is 4529 ll
and also AC MADE IN USA
Last edited by Ozzie; December 21st, 2015 at 07:42 AM. Reason: grammar correction; text addition
#9
I want to wish all of you a happy new year !
still working on my pump, had a break while christmas holiday but now it should work I hope
but there is (minimum) one more question LOL
what is that wire doing inside here (this is where the fuel dropped out earlier)
just a wire that was picked up and I can take out or does it have a function ?
12345pumpc_zpscqchsyl5.jpg
12345pumpb_zpsujrrv40e.jpg
12345pumpa_zpsyalfzat0.jpg
seems just to be a "U" of wire that was put inside there ?
I cant see any sense in that piece of wire ?
still working on my pump, had a break while christmas holiday but now it should work I hope
but there is (minimum) one more question LOL
what is that wire doing inside here (this is where the fuel dropped out earlier)
just a wire that was picked up and I can take out or does it have a function ?
12345pumpc_zpscqchsyl5.jpg
12345pumpb_zpsujrrv40e.jpg
12345pumpa_zpsyalfzat0.jpg
seems just to be a "U" of wire that was put inside there ?
I cant see any sense in that piece of wire ?
Last edited by stocki26; January 4th, 2016 at 05:41 AM.
#10
seen from inside there are two small holes
but the wire isnt in the holes ?
12345pumpd_zps5b827oue.jpg
is it possible that there has been some filter earlier that was fixed with that wire ?
and maybe the two little holes are for not getting a vacuum inside the pump ?
but the wire isnt in the holes ?
12345pumpd_zps5b827oue.jpg
is it possible that there has been some filter earlier that was fixed with that wire ?
and maybe the two little holes are for not getting a vacuum inside the pump ?
Last edited by stocki26; January 4th, 2016 at 05:29 AM.
#11
That port is where air inters the pump. Generally there is a pad of course steel wool in that hole used as a filter, probably the wire is there to hold the steel wool in.... Just a guess on my part... Tedd
#12
It was used to retain a "clump" of a "hair" type filter which helped discourage "crud" from closing the vent holes in the pump and helped keep splashing water out. The wire is a "friction" type fit in the recess. It appears that the hair filter has deteriorated and has gone away. It can be easily replaced. You can see it in the attached drawing.
Last edited by Ozzie; January 4th, 2016 at 06:33 AM. Reason: grammar
#14
I just have seen there is a little spot that I maybe should show you ?
Do you think I should use that part or will it leak soon ?
aaa111_zps8ku4eo2r.jpg
seems there is a very small triangle missing since production
Do you think I should use that part or will it leak soon ?
aaa111_zps8ku4eo2r.jpg
seems there is a very small triangle missing since production
Last edited by stocki26; January 4th, 2016 at 07:54 AM.
#15
#16
Those look like the seals for the diaphragms' rods. If so, those could be a problem. The ones I've used in the past were continuous, without the gaps and fit the rods fairly snugly. If the seal doesn't work engine oil could accumulate in the diaphragm chamber. This would most likely happen on the fuel side due to the help from gravity. I'd probably try to find a better seal to use. (If the old seal is still supple you may want to re-use.) If you "must" use a questionable seal, put it on the vacuum side. In that location it would have the least chance to cause a problem.
#17
My guess is your fuel pump diaphragm rod seals are bad. Suggest having your pump overhauled. Do a search, Rebuilding a 394 fuel pump. Not the same pump however the same internal mechanics are used. Will give you an idea what is involved.
Last edited by Larry/car; January 4th, 2016 at 12:54 PM.
#18
#19
as everyone can see, it was not too early to rebuild the pump :-)
fgfgf_zpsooff0qfo.jpg
thanks to Fusick that has sent the rubber parts very quick
fgfgf_zpsooff0qfo.jpg
thanks to Fusick that has sent the rubber parts very quick
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