How do I check differential oil on my 83 prevost. I have looked all around it and only see what looks like an adjustment bolt with a lock nut. Out side of that there does not appear to be anything unless it is on the axle tube somewhere.
Eddie, the ones I have checked the plug is on the drivers side on the back close to the axle housing and about a 1 ft down from the vent takes a 1/2 drive to remove it
I wouldn't know what an adjustment bolt with a lock nut on a rear diff would be for. If that bolt is about where a fill plug should be, I would pull it and see if that is where the plug was. It could be, someone messed up the threads on the housing and used a bolt with a locknut to keep it in there.
Good luck
Gary
Don't fool with the adjustment bolt that is the thrust adjustment for the ring gear keeps you ripping the teeth of the ring gear
good luck
Yeah I was not going to try and mess with that. I will crwl under again and look for the plug but I did not even see a drain plug. I will keep looking.
The plug is just past the center of the housing on the drivers side
good luck
It could be covered in gunk. I think, and I am going by memory here, mine has a square head.
Once you do locate the fill plug-the oil should be up to the level of the fill plug just ready to spill out. NOT a finger down. Having the oil a finger down is enough to cause oil starvation. Good Luck, TomC
That's useful, Tom. I thought that if I could feel it, it was okay.
Lin, if you do not overflow the fill the axles have a tough time slinging enough oil for the wet hubs to run cool
good luck
My MC-8 has 2 plugs one on the houseing and one on the pumpkin one is higher than
The other which on is right