18120008-1 B20 12HH CHUCK SUB ASSEMBLY
18120008-2 B20 SHAFT SUB ASSEMBLY
18120008-3 B20 GEAR SUB ASSEMBLY
18120008-4 B20 UPPER BEARING RETAINER SUB ASSEMBLY
18120008-5 B20 LOWER BEARING RETAINER SUB ASSEMBLY
18120008-6 B20 PUMP MOUNTING PLATE SUB ASSEMBLY
18120008 B20 DRILLHEAD ASSEMBLY
18120002 Clamp Assembly Procedure
18120017 P Chuck Assembly Procedure
18120006 P Clamp Assembly Procedure