Rear end questions

[slick72]

Hello i was wondering what rear end i have factory 318 car trying to find bolt to put oil in rear end

 

[Vaanth]

Hello i was wondering what rear end i have factory 318 car trying to find bolt to put oil in rear end View attachment 731329

The rear axle pictured is an 8-1/4".

The early 8-1/4" axle had a threaded filler plug on the upper right of the differential casting.

This plug location was used from the initial 1969 8-1/4" axle until the late 1976 8-1/4" axles. In late 1976, the threaded filler plug for the 8-1/4" axle was relocated to a new cover using a rubber filler plug.

 

[slick72]

The rear axle pictured is an 8-1/4".

The early 8-1/4" axle had a threaded filler plug on the upper right of the differential casting.
View attachment 731331

This plug location was used from the initial 1969 8-1/4" axle until the late 1976 8-1/4" axles. In late 1976, the threaded filler plug for the 8-1/4" axle was relocated to a new cover using a rubber filler plug.

Thank you I found the plug what should I use to get it loose im trying a adjustable and can't break it loose

 

[Vaanth]

Thank you I found the plug what should I use to get it loose im trying a adjustable and can't break it loose

The plug head should be a 5/8" square. If not too tight, a 5/8" open end wrench can take it out. If too tight for the wrench, use a 5/8" 8-point socket such as this one:

 

[Sixpactogo]

When you get the plug out, fill it with 80-90 W oil until it runs out the filler hole. You're done unless you want to fix the leaks first. Pinion seal is leaking for sure.

 

[Vaanth]

 

[CBODY67]

There is a manual suction device to remove the existing rear axle lube. Hand-held and operated. Every service station had one, back then. That way, no need to remove the rear cover, unless you want to.

CBODY67

 

[Vaanth]

There is a manual suction device to remove the existing rear axle lube. Hand-held and operated. Every service station had one, back then. That way, no need to remove the rear cover, unless you want to.

CBODY67

Example:

In addition to fluid removal from differentials as well as manual transmissions, the suction gun is also good for filling them. It's much easier to maneuver and get in among the exhaust, lines, etc. than a squeeze bottle, or jug and funnel.


Lincoln and Plews make good suction guns.

 

[Gerald Morris]

Thank you I found the plug what should I use to get it loose im trying a adjustable and can't break it loose

Get a 5/8" SQUARE socket, and lay that on w a breaker bar if its tough. Be sure to measure the thing first. I suppose it could be an 11/16" square also, but I suspect its a 5/8".