What parts should be replaced on a worn pump assembly for the 900 Max AWRS?
900 Max AWRS and pump parts
When the pump on the 900 Max starts to wear down, it is usually the roller assembly and bushings that need to be replaced. Product # 1083 is the roller assembly, 1078 is the front bushing, and 1088 is the back bushing. We recommend that all of these parts be replaced at the same time. The entire pump assembly can be replaced with Product # 1075 if needed. These parts would all be the same for a 900 standard sampler as well.