Main pan used in DAVID BROWN engines - 3 pivots. Main pan used in DAVID BROWN engines - 3 pivots. PARAMETERS cylinder diameter: 100.04mm shaft diameter: 66.650mm pivot: 66.65mm width: 38.23mm dimension: +0.25mm ENGINES DAVID BROWN AD4/55 AD4/55T MODELS David Brown 1394T 1410 1412 1490 1494 CASE