Abstract
The maintenance allocation methods are important in the design and maintenance of product.  However,  these  methods  have  lots  of  deficiencies  in  practical  application,  which  is inconsistent with the purpose of the maintenance allocation. To allocate the system MTTR (Mean Time to Repair) to the subsystems more precisely and reasonably, a better model is needed. The aim of this paper is to develop a maintenance allocation model which can improve the applicability and operability, and solve the residue problem which exists in maintenance allocation. A simple case study is used to demonstrate how the model can be applied in a real case.