N38143 Chapter 4 Remote expansion tank - 4GM, 4TGM and 6TG2AM A remotely mounted expansion tank is recommended where longer pipe runs are required and where fabricated coolers are used. A remote cooler expansion tank kit can be fitted using the following procedure. 1. 1. Figure (O) shows draining the engine coolant (O1), cutting, removing and discarding the bleed pipes (O2), and removing the existing expansion tank (O3) and disposing of the rubber elbow (O4) at the base. Page 31