What was found
H-CLAMP IS CRACKING/SEPARATING AT THE BACK END. IT APPEARS TO BE CAUSED BY THE COMPRESSION OF THE O-RING SEAL BY THE EDGE OF THE BATTERY CASE. EITHER PARTS ARE OUT OF TOLERANCE CAUSING OVER COMPRESSION OF THE O-RING, OR THE MATERIAL OF THE BLACK H-CLAMP IS NOT AS STRONG AS IT USE TO BE AND NEEDS TO BE. WE DID NOT HAVE PROBLEMS WITH EARLIER MODELS OF THE SAME CONSTRUCTION EG THE 110-4, AND HAVE NOT SEEN THIS PROBLEM IN THE C406-2HM UNITS INSTALLED TO DATE. THIS PROBLEM HAS SO FAR EVIDENCED ITSELF IN A NARROG SN GROUP OF THIS MODEL (YELLOW CASE). 5 UNITS CRACKED IN THIS FLEET SO FAR.