Front And Rear Diffs

[ndestroya]

I am a new owner of a 83 K5 blazer that i am currently re-doing. I was wondering if anyone could tell me how much gear oil goes in the rear diff and also the front diff, i have a 12-bolt chevy rear and a dana 44 in the front. One last thing i was wondering how to fill them since there is no filler plug on the top- of either one, i was thinking of filling them through the breathers but i was not sure.
Thanks Alot, Josh

 

[divorced]

One last thing i was wondering how to fill them since there is no filler plug on the top- of either one

There is a plug you remove to fill them. The 12 bolt plug I *think* is on the passenger side of the differential about half way up. The D44 plug is on the front cover. Fill them with 80W90 until oil comes out of the fill hole.

 

[BigOrange90Jimmy]

The fill plug for the 12b is on the passenger side about the same height as the pinion. If it's a leaky axle, you may have to "find" it by scraping off all the grease. A 3/8" ratchet and short extension is what removes the plug. Just fill until it comes out the hole.

As for the D44, the fill plug should be in the differential cover.

 

[ndestroya]

Thanks alot guys i found the rear diff fill plug i just had to clean it to see it like you said. As for the dana 44 up front i saw the big plug but i didn't know if thats where i should fill it from. I am gonna do the job tomorrow morning, thanks again!
Thanks, Josh