Seal Replacement and Repair - RTPg Series™ Truck Pump
To begin, securely clamp the pump to the bench or work surface to keep the pump from tipping. Next, remove the head cap screws. Remove the head. Tip the head back to keep the idler pin from falling off the idler pin. Remove the idler. Discard the head gaskets. Note the number and thickness of the gaskets as these will need to be replaced. Loosen and remove the bearing plate cap screws and remove the bearing plate. Next, insert a brass or hardwood bar into the port opening to keep the pump from turning. Using a bearing locknut tool or spanner wrench, loosen and remove the locknut.