This test is the same for the discharge blower on the forage chopper.  Clearance between the blower paddle and the outside band should pass a dime, but pick up a nickel at bottom dead center.  Paddle clearance should be tightest when the paddle hangs straight down to bottom dead center.  Clearance should increase as the paddle rotates upward to discharge the forage.  This relieves the pressure on the outside band. Without that greater clearance on the upthrust, the band can overheat resulting in a loss of power.

    To check for correct clearance, place a dime at bottom dead center inside the blower case.  Next, set a nickel next to the dime.  Slowly rotate the fan by hand so the paddle moves from the five o'clock position to eight o'clock.   With the correct clearance, the dime should stay in the bottom of the case but the nickel should be swept up until it reaches the eight 'clock position.  If the nickel drops before this point, the clearance is too wide and will cut capacity and throwing distance.  Repeat the check for each paddle.  If paddles are in need of adjustment, put the nickel and dime back in your pocket and get out two pennies.