The Forward Look Network
The Forward Look Network
Search | Statistics | User Listing Forums | Chat | eBay | Calendars | Albums | Skins | Language
You are logged in as a guest. ( logon | register )

361 Oil Pump Driveshaft Question
Jump to page : 1
Now viewing page 1 [50 messages per page]
View previous thread :: View next thread
   Forward Look Technical Discussions -> Engine, Exhaust, Fuel and IgnitionMessage format
 
J97_Imperial
Posted 2017-02-12 12:56 AM (#533809)
Subject: 361 Oil Pump Driveshaft Question



Veteran

Posts: 161
1002525
Location: Pearland, Texas, McPherson, Kansas
Hey Guys,
So I am working a 361 out of my Newport and I have what I think is an issue. Firstly, when I was disassembling this extremely neglected engine (hasn't run since 89 and was in a scrapyard for some time) the slot in the distributor itself where it mounts to the oil pump driveshaft broke off. No problem, I have an extra driveshaft from the 383 that I have just in case i need to swap engines. However, when I was trying to get the old driveshaft out, it was very difficult. I ended up having to use a pipe wrench and screwdrivers and a hammer However, I did not damage the bushing at all which is good news. When I went to put the replacement driveshaft in today, it would go in about halfway and stop. (I did lube the driveshaft with some motor oil so if that is the problem please tell me) It seemed like it was actually forming a seal with the bushing and trapping air under the driveshaft. I was wondering if there was some sort of bleed bolt or whatnot on the oil pump itself so that the air can bleed while I place the entire driveshaft in.

All help is greatly appreciated

Thanks
Jacob
Top of the page Bottom of the page
BigBlockMopar
Posted 2017-02-12 5:07 AM (#533815 - in reply to #533809)
Subject: Re: 361 Oil Pump Driveshaft Question



Expert

Posts: 3575
20001000500252525
Location: Netherlands
Bushings need to be reamed to size when installed.
Maybe someone replaced it sometime ago and never did this.

You can cut a sharp longitudinal groove in the old driveshaft and use it as a reamer perhaps.

I would have a close look at/inside the oilpump to find out why the driveshaft tip sheared off.
Top of the page Bottom of the page
J97_Imperial
Posted 2017-02-12 11:34 AM (#533831 - in reply to #533815)
Subject: Re: 361 Oil Pump Driveshaft Question



Veteran

Posts: 161
1002525
Location: Pearland, Texas, McPherson, Kansas
BigBlockMopar - 2017-02-12 4:07 AM

Bushings need to be reamed to size when installed.
Maybe someone replaced it sometime ago and never did this.

You can cut a sharp longitudinal groove in the old driveshaft and use it as a reamer perhaps.

I would have a close look at/inside the oilpump to find out why the driveshaft tip sheared off.


The driveshaft tip didn't shear off, it was the distributor tip. They were seized together from sitting with the hood up in a scrap yard

Jacob
Top of the page Bottom of the page
57chizler
Posted 2017-02-12 4:37 PM (#533849 - in reply to #533815)
Subject: Re: 361 Oil Pump Driveshaft Question



Expert

Posts: 3768
200010005001001002525
Location: NorCal
BigBlockMopar - 2017-02-12 2:07 AM

Bushings need to be reamed to size when installed.


Actually, correct installation requires a special burnishing tool, reaming is not recommended.

Easiest way to remove a stubborn intermediate shaft is to remove the oil pump first, then drive the shaft out from the bottom. A varnish ridge on the shaft will make shaft removal difficult even with a proper size bushing.
Top of the page Bottom of the page
J97_Imperial
Posted 2017-02-12 10:10 PM (#533866 - in reply to #533849)
Subject: Re: 361 Oil Pump Driveshaft Question



Veteran

Posts: 161
1002525
Location: Pearland, Texas, McPherson, Kansas
57chizler - 2017-02-12 3:37 PM

BigBlockMopar - 2017-02-12 2:07 AM

Bushings need to be reamed to size when installed.


Actually, correct installation requires a special burnishing tool, reaming is not recommended.

Easiest way to remove a stubborn intermediate shaft is to remove the oil pump first, then drive the shaft out from the bottom. A varnish ridge on the shaft will make shaft removal difficult even with a proper size bushing.


Shaft is out so should I remove the oil pump before installing the new one?

Jacob
Top of the page Bottom of the page
57chizler
Posted 2017-02-13 1:57 PM (#533934 - in reply to #533866)
Subject: Re: 361 Oil Pump Driveshaft Question



Expert

Posts: 3768
200010005001001002525
Location: NorCal

I would remove the pump to be sure the reason the shaft won't go in is the bushing and not the pump.
Top of the page Bottom of the page
J97_Imperial
Posted 2017-02-13 7:27 PM (#533966 - in reply to #533934)
Subject: Re: 361 Oil Pump Driveshaft Question



Veteran

Posts: 161
1002525
Location: Pearland, Texas, McPherson, Kansas
57chizler - 2017-02-13 12:57 PM


I would remove the pump to be sure the reason the shaft won't go in is the bushing and not the pump.


Actually just got done removing the pump. Found out the reason I was having so much trouble was a buildup of sludge. Cleaned it all out and it is fine now. I have the driveshaft set to TDC and will reinstall pump tomorrow.

Jacob
Top of the page Bottom of the page
Jump to page : 1
Now viewing page 1 [50 messages per page]
Jump to forum :
Search this forum
Printer friendly version
E-mail a link to this thread

* * * This site contains affiliate links for which we may be compensated * * *


(Delete all cookies set by this site)