Core Program Handbook - Bendix

GRADING
BENDIX CORE PROGRAM HANDBOOK
CORE GRADING GUIDELINES FOR COMPRESSORS
Good Core
• No major components damaged or missing
One Part Damaged
One major part damaged or missing
Major parts include:
• Damaged crankshaft (including threads)
• Broken cooling fi ns
• Broken governor mounting pad
• Missing or broken connecting rod & cap
• Damaged fl ange
• Case/crankcase or block damage
• Missing end cover
• Excessive wear (e.g. rust, corrosion, etc.) that would prevent the part from being
remanufactured (fi nal determination will be made by Bendix)
• Any core that has been welded or brazed
• Damage to the cylinder head
Two Parts Damaged
Two major parts damaged or missing
• Hole in case/crankcase is two part damage
Scrap
• Co-mingled parts
• Competitor parts not in Bendix Truck Products
• Three major parts damaged or missing
• Obsolete or not in program parts
What to look for
• Compressor crankshafts capable of making 360 degree rotation – if not, the shaft may be
broken and/or signifi cant internal damage is present.
• Damage to threaded end of crankshaft or spline damage.
• Hammer marks to end of crankshaft.
• Evidence of over torque – possibly sheared end of crankshaft.
• Evidence of high heat.
November 2009
11
BW1020A