To help identify the appropriate maintenance kit, review the pump head area around where the Lift Rod enters/exits the body (Top Hex Plate Gland Nut Cavity).
The pump heads manufactured during this period have the following characteristics:
- Delrin Packing Gland Nut
- Packing Gland Cup Seal
- Short Bottom Bushing
The handle / lift rod area manufactured during this period will have the following characteristics:
- The Lift Rod is NOT threaded into the Rod Connector
- The Lift Rod slides into the Rod Connector and is held in place with a Shoulder Bolt. There is no longer a Roll Pin or Set Screw used for this purpose. These are the primary changes to this version.
With this kit you will be able to replace most wear items to keep your Bison Pump running strong!