Quick view Add to Cart Overhaul Instructions with Parts List for Voltage & Frequency Regulator - Types 4B39-1-B, 4B39-1-C Document Part Number: Publication No. R6612-20 Number of pages: 116Part Number: Publication No. R6612-20Revision Date: Jan-1967Description: Mfg By: MSRP: Was: Now: $56.58