Brian D Broken Arrow , OK December 05, 2014 Appliance: Maytag Self Cleaning Free Standing Gas Range MGR5751BDW Maytag Range Mgr5751bdw: Gas lines broke. How to replace Orifice Tube Assy. Replaced the lines, however the model maytag I was working un is a poor design. When you lift the top up to access the lines, you are putting pressure on the gas lines. If you lift it up, then down several times; then you risk bending the tubing and it will break. My recomendation is for do-it-yourselfers to lift it, install it, and close it in one step so you don't bend or break the lines again. Hope this helps. Brian 6 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes