???? Crankcase Splitter & Crank Puller Installer Tool – Dirt Bike/ATV ????. Product Type Crankcase Splitter Separator & Crank Puller Installer Tool Set. 1 × Crankcase Splitter Separator Tool Set. Dual Function : Acts as both a crankcase splitter (to separate case halves) and crank puller/installer (to safely remove or install crankshafts).