A modular conveyor, comprising a plurality of modules successive in a transport direction, each comprising a body part with a transport surface for transporting products thereon, which body part during use is hingedly coupled via a hinge pin to the body part of a successive module, wherein the successive modules are adjustable from an assembly position in which the body parts of the modules cooperate to form a receiving space that allows insertion and exit of the hinge pin, to an operative position in which the body parts of the modules cooperate to form a receiving space that retains the hinge pin, wherein: - the body part comprises a first hinge part, which cooperates with a correspondingly formed second hinge part of the successive module, - in the assembly position the hinge pin has a first position (i) within one of the first and second hinge parts, and in the operative position the hinge pin has a second position (ii) within that hinge part, in which the position of the hinge pin is displaceable transversely to its longitudinal axis, preferably in transport direction, - between the first (i) and the second position (ii) a passable barrier is arranged, - a hinge hole of a hinge loop of the second hinge part corresponds to the diameter of the hinge pin, - the successive modules are each provided at a front and rear with the correspondingly formed first and second hinge parts, wherein the transport surface is part of a transport blade portion of the body part that extends from the rear to the front of the module, and wherein the hinge parts (9,10) are part of a hinge assembly portion of the body part located below the transport blade portion, characterized in that, - the successive modules are rotatable until their body parts are supported onto each other to displace the hinge pin through lever action of the second hinge part, - during displacement the hinge pin is forced to pass the passable barrier, which after passing restricts reverse displacement, such that the hinge pin is retained against displacement transversely to its longitudinal axis. - the body part comprises a first hinge part, which cooperates with a correspondingly formed second hinge part of the successive module, - in the assembly position the hinge pin has a first position (i) within one of the first and second hinge parts, and in the operative position the hinge pin has a second position (ii) within that hinge part, in which the position of the hinge pin is displaceable transversely to its longitudinal axis, preferably in transport direction, - between the first (i) and the second position (ii) a passable barrier is arranged, - a hinge hole of a hinge loop of the second hinge part corresponds to the diameter of the hinge pin, - the successive modules are each provided at a front and rear with the correspondingly formed first and second hinge parts, wherein the transport surface is part of a transport blade portion of the body part that extends from the rear to the front of the module, and wherein the hinge parts (9,10) are part of a hinge assembly portion of the body part located below the transport blade portion, characterized in that, - the successive modules are rotatable until their body parts are supported onto each other to displace the hinge pin through lever action of the second hinge part, - during displacement the hinge pin is forced to pass the passable barrier, which after passing restricts reverse displacement, such that the hinge pin is retained against displacement transversely to its longitudinal axis.