leaking oil pump gasket - reassembly question
#2527815
07/27/18 11:58 AM
07/27/18 11:58 AM
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Joined: Apr 2016
Posts: 356 Greenwood Lake, NY
fuelishnsilly
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Greenwood Lake, NY
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So I picked up an oil pump rebuild kit as my oil pump is leaking badly where the pressure spring retaining bolt goes in. The kit includes the new clover leaf drive shaft and companion circular part of the pump that goes into the housing. Do I need to pack the vanes of it with grease to create a prime or would simply putting a film of oil on everything be ok? Also, do I need to drain the oil pan or can I leave the oil in there and just replace the pump and filter?
First time I'm ever doing this and I'm pretty sure this is the first time the oil pump has been off this car.
Thanks
inherited a 69 roadrunner from my grand pop.
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Re: leaking oil pump gasket - reassembly question
[Re: fuelishnsilly]
#2528184
07/28/18 04:43 AM
07/28/18 04:43 AM
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Joined: Aug 2003
Posts: 43,251 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,251
Bend,OR USA
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I clean them thoroughly and then coat all parts in thin engine oil thoroughly before assembly, the scroll, the rotor and stem as well as coat the pump inside where the scroll rides and the cover where it rides also. Skip the vasoline or any grease in the pump As far as the pump leaking by the bypass valve replace that gasket and retighten it again after getting the motor up to normal operating temps, do NOT over tighten it Good luck Let us know how it goes
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: leaking oil pump gasket - reassembly question
[Re: fuelishnsilly]
#2528366
07/28/18 06:52 PM
07/28/18 06:52 PM
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Joined: Jan 2003
Posts: 25,902 Rio Linda, CA
John_Kunkel
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Posts: 25,902
Rio Linda, CA
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Rebuilding a whole pump because of a leaking spring cap gasket?
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Re: leaking oil pump gasket - reassembly question
[Re: fuelishnsilly]
#2528405
07/28/18 08:47 PM
07/28/18 08:47 PM
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Joined: Apr 2016
Posts: 356 Greenwood Lake, NY
fuelishnsilly
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Greenwood Lake, NY
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It’s not a cap gasket. Seems to be leaking pretty good from the gasket at the pressure spring bolt. Losing about a quart an hour driving it.
Any tricks on how to get just that bolt out? Steering box is blocking it or the bracket for the motor mount is. I can’t remember which but I know it couldn’t get a wrench or socket on it from under the car.
Yes it t is a big block engine.
inherited a 69 roadrunner from my grand pop.
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Re: leaking oil pump gasket - reassembly question
[Re: fuelishnsilly]
#2528444
07/28/18 10:37 PM
07/28/18 10:37 PM
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Joined: May 2015
Posts: 1,134 Lost in Time
Iowan
super stock
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super stock
Joined: May 2015
Posts: 1,134
Lost in Time
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Pull the pump off if it's that tight, by the time you get it back together you'll have the thing full of grime and not holding pressure. I have seen the boss that holds the pressure spring crack. I'd put a new pump on it at this point, there not expensive.
Have a great day Iowan
"obsolete is neat"
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Re: leaking oil pump gasket - reassembly question
[Re: fuelishnsilly]
#2528660
07/29/18 04:25 PM
07/29/18 04:25 PM
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Joined: Jan 2003
Posts: 25,902 Rio Linda, CA
John_Kunkel
Too Many Posts
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Posts: 25,902
Rio Linda, CA
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It’s not a cap gasket. Seems to be leaking pretty good from the gasket at the pressure spring bolt. Once again the English language causes confusion, what you're calling a "bolt" is a "cap" in factory lingo.
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Re: leaking oil pump gasket - reassembly question
[Re: fuelishnsilly]
#2528665
07/29/18 04:38 PM
07/29/18 04:38 PM
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Joined: May 2015
Posts: 1,134 Lost in Time
Iowan
super stock
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super stock
Joined: May 2015
Posts: 1,134
Lost in Time
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It's been on motors I've gotten from yards or picked up used, at one time I had close to 20 rb blocks. Now I have 4.
Have a great day Iowan
"obsolete is neat"
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Re: leaking oil pump gasket - reassembly question
[Re: fuelishnsilly]
#2528801
07/29/18 10:20 PM
07/29/18 10:20 PM
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Joined: Apr 2016
Posts: 356 Greenwood Lake, NY
fuelishnsilly
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ok, thank you for the correction John. I thought it was more of a bolt than something that short like a pipe plug.
Iowan, I'm still confused as to what would cause the oil pump housing to crack? Its not like it is under that much torque or subject to abuse like the rest of the block.
inherited a 69 roadrunner from my grand pop.
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Re: leaking oil pump gasket - reassembly question
[Re: fuelishnsilly]
#2528823
07/29/18 11:03 PM
07/29/18 11:03 PM
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Joined: May 2015
Posts: 1,134 Lost in Time
Iowan
super stock
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super stock
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Posts: 1,134
Lost in Time
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I have no idea other than flaw in casting, abuse or over tightning of the cap.
Have a great day Iowan
"obsolete is neat"
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Re: leaking oil pump gasket - reassembly question
[Re: fuelishnsilly]
#2529461
07/31/18 12:01 PM
07/31/18 12:01 PM
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Joined: Apr 2016
Posts: 356 Greenwood Lake, NY
fuelishnsilly
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Ok, so I finally got a chance to work on it last night. I pulled the oil pump off and when I got it out, I put the case in a vice and went to remove the pressure relief cap. The cap was a little less than snug which I'm guessing is why it was leaking. I pulled it all apart and checked everything out while I had it off, everything looked in great shape so I put it back together after cleaning it all up and oiling the internal parts with a thin film of 5w-20 that I had laying around. Didn't get a chance to fire it up last night but I'll take care of that when I get home from work today.
Thanks for all the help.
inherited a 69 roadrunner from my grand pop.
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Re: leaking oil pump gasket - reassembly question
[Re: fuelishnsilly]
#2529658
07/31/18 06:31 PM
07/31/18 06:31 PM
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Joined: Jan 2003
Posts: 25,902 Rio Linda, CA
John_Kunkel
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Posts: 25,902
Rio Linda, CA
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The cap was a little less than snug which I'm guessing is why it was leaking. Gaskets shrink with age.
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Re: leaking oil pump gasket - reassembly question
[Re: fuelishnsilly]
#2530262
08/01/18 11:22 PM
08/01/18 11:22 PM
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Joined: Apr 2016
Posts: 356 Greenwood Lake, NY
fuelishnsilly
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Posts: 356
Greenwood Lake, NY
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Understandable but I would have imagined something that was exposed to oil like that wouldn't shrink. I could see if the car hasn't been run in 20 something years which this has had starts almost every month to keep stuff lubricated.
inherited a 69 roadrunner from my grand pop.
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