So I just put in a new set of G2 front and rear gears among the other list of things so I was expecting to chase down vibrations and such from the driveshafts, engine etc. I took it into a good 4x4 shop here in town today for an alignment and got the owner to do a test drive to see if he could pinpoint where it was coming from. Had the front D/S off and the rear pinion was dead on but still getting a drone....heavy at high speed. Thought maybe tires out of balance but it's been in the air up on the lift since parked so I didn't think so.
We got it up on the lift and ran it while he was down below with a stethoscope, it was coming from the rear axle. I got him to open it up where he ran a test pattern and measured my backlash. Wear pattern was bang on and backlash was about 7 thousandths. The oil was grey and gritty and when you looked closely at the teeth they both said it looks like it was chattering. I had all new bearings, shims, crush sleeve....everything. I even bought an expensive dial indicator torque wrench for pinion preload. New axles and axle bearings, new ARB locker everything new. Bearing caps photographed and put back on the same, good preload.
I'm stumped???? Ordered a new set of Yukon's and bearings for another install but I cannot figure out what went wrong. They figure a bad gear set, anyone else run into that before?? I guess I should be happy it wasn't in the engine. I'm pretty sure he's not trying to rip me off cause every time I go in to buy something he talks me out of spending more money lol.
Last edited by Sgo70; 11-14-2013 at 05:55 PM.