Burks Pump GNC9A-3F-AB-MV Parts Breakdown, Exploded View Diagram & GNC Series Base Mounted Centrifugal Pumps Repair Parts PDF Manual. Power Frame Assembly 21282 Available - Includes: Slinger Washer (21093), Bearing Housing (21275), Seal (21278), Outboard Bearing (21280), Inboard Bearing (21279), Cover- Inboard Bearing (21276), Cap Screw, (04235), Retaining Ring (21281), Shaft (21277), Key (M-2222) Washer (01609-A) Grease Fitting (0003131).