I have a 4010 mule trans I recently changed the front wheel bearing and axles after Changing I noticed the machine pulls to the left hard when in four wheel drive and only in four wheel drive is there something I did wrong or just adjust on the steering linkage?

 

Hi,
You Might Have to Pull Off The Front Brake Drums Again .
Check for The a "" SHIM "" In Between The Front Axle Bearing ( out board ) To the Brake Drum . Next ( Sorry For This ) Did You Use A IMPACT GUN ???? If So ,, You Have Crushed the Front Wheel Bearings ….
The Proper Torque Is A Must !
Check the Front Brake Wheel Cylinders . They Are Self Adjusting ( The Adjuster Is part of the Piston Assembly > Internal < . Greased the Dust / Dirt Seal To The Brake Drum ?
Check the Front Differential . Possible that the " Snap - Ring " Has Come out Of Place . This Holds The Inner Stub Axle To the Diff. Bearing cap . The Inner Axle Can Slide Out Of The Drive Splines If It Was " Forced In Place " The Limited Slip Clutch Pack ( Inside the Front Diff. ) CAN Break !
Hope This Helps .
later,
Mark