Hoist gantry crane (HGC) is a lift plane that is used as a lifter and carrier in the woorkshop and the factory. HGC is modified to make it easier to lift objects that weighs <3 Ton in PNJ mechanical workshops and HGC can only move up, down, front and back. HGC design using H beam material and square hollow iron ST42 used as frame. This Modification HGC replaces the previous rubber wheels, size 6 inch, 2 wheels moving all directions and 2 other wheels only in one direction (not rotate) into 4 wheels that can move all directions (rotating) and made from cast iron, this modification add chain hoist as a lift tool with a capacity of 3 Ton. The H beam skeleton on the HGC is used to withstand transverse and hollow loading as the upright legs help the H beam to stand upright and hold the load on the raised base. HGC constructions utilize wheel functions that make the hoist gantry crane portable and easy to move, The advantages of the HGC design is it does not take up much space when operated, can lift heavy tools < 3 Ton, easy to operate, can move in all direction and can be used without electricity/fue . The modified HGC will be used as a tool to lift the mold base of the molding machine or other objects weigh up to < 3 Ton so that the mold base can be exchanged with other mold bases and heavy objects in other mechanical engineering workshops can be lift and move.