2006 Honda TRX680 Rincon Factory Service Manual, Page 380Get this manual
FRONT WHEELSUSPENSIONSTEERING INSPECTION Remove the seal caps and pivot collar from the upper armFor ball joint Inspect the ball joint boot for tears or other damage replacement by moving the ball joint stud(page 15-25) It should moves freely and smoothlyDUST SEAL CAPS BOOT
PIVOT COLLAR Check the pivot bushings in the upper arm for wear or damage