M100PBM, 20QC381M, 20QC381M4, 20QC4377M
All cores must be returned within 30 days from purchase
date for full credit. Cores returned for credit must be
REBUILDABLE CORES, complete and never disassembled.
Units that are rusty, frozen (seized or locked up) or
cannot be rebuilt will not receive core credit. Cores
must turn from end to end, mounting holes and housing
not cracked or broken, input and output or keyways must
not be damaged or have excessive wear, welded upon or
severe impact. All cores are subject to internal inspection
before credit will be issued.