I have grinding noise only with either one or both front wheel on
can anyone help PLZ.
Need more info. Are the back wheels turning? Maybe a setscrew pin has loosened up on one of the driveshafts ? Could be the diff is broken?
Yes rear wheel turning, checked all drive shaft screws ok
If it the diff. Is broken wouldn't it make the noise even if I have the front wheel off ?
Not nessecarily, With out the weight of the tire to turn it might not make the noise with no tires on. The bearings on the pinion gear are common to wear out. Check the pinions and see if they are loose or wobbly. Also check the wheel bearings.
Are You running 4s or 6s?