1. Center line of the piston parallel to the wrist pin bore.
2. Upper compression ring gap location.
3. Upper oil control segment ring gap location.
4. Lower oil control segment ring gap location.
5. Expander ring and lower compression ring gap location.
NOTE: Be sure not to scratch the cylinder wall or crankshaft journal with the connecting rod. Push the piston down until the connecting rod bearing seats on the crankshaft journal.
NOTE: Lubricate the pistons, piston rings, connecting rod bearings and the entire cylinder bores with clean engine oil.
NOTE: Make sure the piston rings are positioned to specifications for installation.
Original technical text and illustrations, formatted as HTML. Follow the engine, transmission, equipment, model and year specified in the source. Import and layout checks do not establish applicability to every 2015–2017 Mustang. About this collection.