The main pump body section of the 5641 is fitted and sealed at the factory and not designed to be removed. Should it be necessary to clean the 5641 this should only be done using the filler neck access point and flushing through with clean ATF oil. A handy dispenser for replacing ATF transmission fluid.8 assorted adaptors for increased applications (see instruction booklet for adaptor applications). Manually operated pump with integrated pressure gauge. 3L pump complete with pressure gauge (0 - 30psi / 0 - 2 bar).