For intrest sake what is the purpose of those two nipples on top of the Diff housing and what is function of that Allan key bolt on the bottom of the diff housing CAT0966HPTAL02729
The nipples are for bleeding the brakes, the valve next to one of them is a pressure relief fitting for the differential housing. When the oil gets hot that valve opens to prevent blowing the seals in the wheels. They often get plugged up with cr@p if the machine is working in dirty conditions. We remove the relief fitting and install a 1/4" NPT connector, then run a line up the machine frame to an atmospheric breather. 9C-4937 (3/8" female thread) works well in that application. I'll snap a photo if I get chance. The Allen screw plug in the diff housing - no idea. Have you tried removing it..?
Thank you Nige . The allen key bolts i ddnt try to remove to see . There are 2 small allen key bolts (one on the right and one on the left side)... i thot its for brake adjusting . Are those brakes adjustable there by the diff
The service brakes are self-adjusting. The only thing you can do is measure the wear on the friction discs in order to determine how close to worn out they are. Procedure attached - it requires a special tool.
Noted with thanks. Now i know the purpose of that allen key screw.
Well I learned something today, real handy that the brake measurement is stored in the ECM of the machine for reference when checking it at a latter date! Have to wonder what else is or can be stored that way. Can think of all kinds of stuff that would be handy for some outfits to be able to store right on a machine. Or that a machine could self store and report to the main office. I do recall that I would get notifications saying driver of the 773G had abused the sifting or something of that nature from the program that would also tell me when the truck was being used. Don't seem to see that as an option anymore on SIS. Must have changed where or how it is accessed.
Photo as promised. The 9C-4937 has a 3/8" NPSF female thread and is rated at 10 microns. In dusty conditions we would change them every 1000 hours or so, maybe every 500 on the front axle if it was really dusty.