Changing rear end diff oil - Impala Tech
General Tech For best results use forums below.

 
LinkBack Thread Tools
post #1 of 4 (permalink) Old 03-13-2017, 05:26 PM Thread Starter
Member
 
Join Date: Dec 2015
Location: new jersey
Posts: 70
 
Changing rear end diff oil

How would you change diff oil on a 1962 impala.Is there a drain plug in the rear?if not would it make sense to weld one in?
DannyL is offline  
Sponsored Links
Advertisement
 
post #2 of 4 (permalink) Old 03-13-2017, 07:14 PM
Moderator
 
Join Date: Jan 2006
Posts: 12,381
 
There is no drain plug. You can cut a hole (large drill bit) and weld in a pipe thread bung that clears the differential and ring gear; then install a flush three eighth inch hex drive or eighth inch drive pipe plug in the bottom of the housing to drain it in the future. Personally I would do it the old fashioned way. Pull wheels and tire in the back then the brake drums. drop the drive shaft, before you unbolt then pull the axles out of the housing. You can then drop the center section out and inspect the condition of the gears.

If it were me I would clean the housing (a lot of kerosene with catch pans to contain it) parts cleaning bushes and then replace any bearings that show any sign of wear or pitting from water getting over the decades. Set of new gaskets and some paint and it will look like new.

Of course if you are going to change the rear end out for a stronger one (options are an 8.5 inch ring gear rear end out of a 1971 and up GM full size car, a 12 bolt out of a 1965-'70 Impala, or a Dana 60 out from under a Ford one ton truck that has been shortened to fit with new 33 spline axles held in place by big ford bearings). I wouldn't bother with the cleaning or new bearings I would just flip it over and use the fill plug as the drain plug.

Big Dave
Big Dave is offline  
post #3 of 4 (permalink) Old 03-13-2017, 07:18 PM
Senior Member
 
Join Date: Mar 2008
Location: Moneta, VA
Posts: 825
 
There used to be one on the earlier years, but GM decided to eliminate it for some reason.

The only choice now is to drop the Center Section or use a suction gun.

-Parting Out over 75 '58 to '73 Full Size Chevy Cars-

Member:

-National Impala Association
-Vintage Chevrolet Club of America
62BillT is offline  
 
post #4 of 4 (permalink) Old 03-13-2017, 08:09 PM Thread Starter
Member
 
Join Date: Dec 2015
Location: new jersey
Posts: 70
 
Quote:
Originally Posted by 62BillT View Post
There used to be one on the earlier years, but GM decided to eliminate it for some reason.

The only choice now is to drop the Center Section or use a suction gun.
Ok. Thanks bill
DannyL is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Impala Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome