Notices
1961 - 1966 F-100 & Larger F-Series Trucks Discuss the Slick Sixties Ford Truck

61 rear end leaking

 
  #1  
Old 05-19-2018, 09:24 AM
slabhunter
slabhunter is offline
Junior User
Thread Starter
Join Date: May 2018
Location: Webster
Posts: 74
slabhunter is starting off with a positive reputation.
61 rear end leaking

So I have discovered that my new purchase (61 F100 stepside 233 six, three on the tree) has a bent drive shaft. I'm guessing that is what has caused my newest problem, rear end leaking oil (bad). Looks like it is coming from where the yoke goes into the rear end, My question what is the problem and how do I fix the leak? Also are any other year Ford pickup drive shafts interchangeable with mine?
 

Last edited by slabhunter; 05-19-2018 at 10:11 AM. Reason: Add another question
  #2  
Old 05-19-2018, 10:31 AM
TA455HO's Avatar
TA455HO
TA455HO is online now
Post Fiend
Join Date: Aug 2012
Location: Seattle, WA
Posts: 5,113
TA455HO has a very good reputation on FTE.TA455HO has a very good reputation on FTE.TA455HO has a very good reputation on FTE.TA455HO has a very good reputation on FTE.
There is a pinion seal where the yoke sleeve goes through the housing and connects to the drive pinion. The seal is likely part or all of the source of the leak. To replace it you will need to pull the drive shaft (replace it since it is bent) and then there is a center nut holding the yoke flange on. You'll have to hold the yoke from turning while you remove the nut. They are very tight to get off since they are a high torque nut. Once you remove the nut and pull the yoke out then you can get a seal puller or small pry behind the seal and pop it out. Since the drive shaft is bent I'd also inspect the yoke closely since a bent yoke will ruin a new seal. But, tap a new seal in and replace the yoke and nut.

You might want to consider a 1961 shop manual for your truck, like this. It has torque specs as well as the write-up and pictures. Overall, I rate them well worth owning. Heck, I don't own anything but 1966 and I still have a 1961 manual....:-)





Hopefully nothing inside the differential got bent in the process of the drive shaft bending.

Chad
 
  #3  
Old 05-19-2018, 10:50 AM
slabhunter
slabhunter is offline
Junior User
Thread Starter
Join Date: May 2018
Location: Webster
Posts: 74
slabhunter is starting off with a positive reputation.
Where can I get that shop manual?
 
  #4  
Old 05-19-2018, 11:05 AM
TA455HO's Avatar
TA455HO
TA455HO is online now
Post Fiend
Join Date: Aug 2012
Location: Seattle, WA
Posts: 5,113
TA455HO has a very good reputation on FTE.TA455HO has a very good reputation on FTE.TA455HO has a very good reputation on FTE.TA455HO has a very good reputation on FTE.
Mine covers Ford and Mercury trucks so it's a bit less common, but for just Ford or both they are on eBay. You can get a paper manual or a CD

https://www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=1961+ford +truck+shop+manual&_sacat=0&LH_TitleDesc=1&_osacat =0&_odkw=1961+ford+truck+shop+manual

Make sure you get one that covers 100 - 800 - some of them start at 850 and go up from there, which wouldn't be what you would want, of course.

Chad
 
  #5  
Old 05-19-2018, 12:37 PM
NumberDummy's Avatar
NumberDummy
NumberDummy is offline
Ford Parts Specialist
Join Date: Nov 2006
Location: Simi Valley, CA
Posts: 81,876
NumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputation
9" pinion seal shown as 4676 in pic:

 
  #6  
Old 05-19-2018, 12:54 PM
slabhunter
slabhunter is offline
Junior User
Thread Starter
Join Date: May 2018
Location: Webster
Posts: 74
slabhunter is starting off with a positive reputation.
Great information guys!!! Ill be ordering shop a manual today....Any thoughts on a replacement drive shaft. I think I have found someone local that makes them but I haven't talked to him yet. I thought there might be another year that would be interchangeable.
 
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
dick1950
1948 - 1956 F1, F100 & Larger F-Series Trucks
21
12-12-2005 05:04 PM
95250mac
Ford vs The Competition
33
05-20-2005 12:52 AM
karljay
Other; Brakes, Electrical, Hitches, Weight Distribution & CDL Discussion
1
12-24-2004 01:46 PM
WXboy
Ranger & B-Series
4
04-14-2004 07:22 PM
jford99
1973 - 1979 F-100 & Larger F-Series Trucks
5
03-03-2001 11:13 AM


Thread Tools
Search this Thread
Quick Reply: 61 rear end leaking


Contact Us - About Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.