include 'Hard Parts' such as differential gears, differential case, crown-wheel and pinion set etc. If these parts are unserviceable in your axle, we will discuss with you the best course of action to render the axle serviceable, in the case of your own unit, or suitable for reconditioning in the case of an exchange. In an exchange situation we will charge for second hand parts, if we are reconditioning your axle, we can use new (where available) or second hand parts, which will be charged acordingly.