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Hi all, new forum user with first posting. We have a ‘57 B95 and am looking for the rear axle fill level. We just went through the rear wheel cylinders and axle/pinion seals and will be changing the lube. I wanted to see if it’s right to the fill plug or a certain distance below it. I’ll attach some pictures of the axle for reference. 
thanks!

 

 

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Hi and welcome to the group!

Answering your question. I honestly don't have the particular point. The most vehicles I have ever dealt with (probably same to you) the oil gets up to the filling hole. But service manual for my 1945 Mack truck (tandem bogie though) prescribes to fill up to a level of one inch lower than the filling hole. There's a nuance that truck has wheel bearings separated from the banjo and they're greased don't get any oil from the differential. Your bearings get oil from the banjo I guess so I'd keep the level up to the edge of the hole. There could be an option to check if you remove one wheel hub and see the level in the banjo the oil starts leaking from the jack shaft tube to where the bearings are expected to be. That would be a required minimum to my understanding but seems easier to just fill up to the plug.

Hope this may help.

Vlad

Никогда не бывает слишком много грузовиков! leversole 11.2012

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So.... even though this truck is decades older than what I worked on.... All service books from my era says , you put your pointer finger in the hole and bend the first knuckle.  If you touch oil, its right... Approx.. 5 MM down from the hole 1/5" American.... 🍻

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