How check oil level b7100hst

[ttfo]

I have a b71hst with 4 wheel drive. I know how much grease/oil that the front and rear diff should have.
How do I check it to see if it has enough without draining and refill?
Thanks

 

[kupitz]

Remove the fill plug on the diff housing and the level should be just below the plug hole.

 

[North Idaho Wolfman]

I have a b71hst with 4 wheel drive. I know how much grease/oil that the front and rear diff should have.
How do I check it to see if it has enough without draining and refill?
Thanks

kupitz gave you the front check.
The rear diff is part of your hydraulic reservoir / sump, so check it with the dip stick.

 

[procraftmike]

Per my manual the front differential recommended oil amount is not enough to fill it to the bottom of the fill port. It only takes a quart to fill up the front axle sections. You almost have to drain them, then add the appropriate amount of oil per your manual. I think it was like .70 quarts for the center section and .15 quarts per axle side.

This is for my 1977, B7100, unless things have changed since then.

 

[ttfo]

Thanks to all that answered. Not sure which one is correct for the front diff or if it makes any differance if there is too much grease/oil.

 

[Lil Foot]

I could never drain or refill the front axle with the recommended amount of oil, then the front axle locked up, requiring a complete rebuild. (previous owner caused gear/bearing problem)
When I opened it up, I was stunned to find the outer gearcases about half full of sludge, sediment, and mostly grease. The upper king pin bearing is lubed with a grease fitting, and years of greasing (or maybe over greasing) began to fill the gearcase up, leaving little room for the oil. After cleanup & rebuild, the axle took the proper amount of oil.