OEM Toyota MR2 Spyder Piston

Toyota MR2 Spyder Piston Parts Questions & Experts Answers

• Piston
  13101-22032
  Q: How to disassemble the piston on Toyota MR2 Spyder?

  A: The first step requires installing the engine to an engine stand followed by removing the cylinder head and water bypass pipe along with its nuts, bolts, pipe and gasket (2) and then followed by removing the Thermostat and knock sensor, engine coolant drain union, oil pump, oil filter and oil filter union requiring a 12 mm hexagon wrench. The removal procedure begins with oil pan deinstallation requiring bolt disassembly of 14 units combined with two nuts and subsequent application of Special Service Tool: 09032-00100 to slice off sealant from the bearing cap subassembly to oil pan interface space while maintaining an undamaged state of both components. Use a dial indicator to check connecting rod thrust clearance before removing any components except for the connecting rod assembly(s). Keep the clearance value within 0.0063 to 0.0135 inch (0.160 to 0.342 mm). To inspect oil clearance with Plastigage measure 0.028 - 0.060 mm (0.0011 - 0.0024 inch) as standard range and maximum is 0.08 mm (0.0031 inch). Align the connecting rod caps based on their matchmarks. Push all assemblies through the cylinder block opening from the top while maintaining organizational order with bearings and components. The second step requires removing the bearing cap subassembly and crankshaft rear oil seal while performing an oil clearance check on main journals and bearings before replacing identified damaged components. A dial indicator should be used to measure thrust clearance on the crankshaft before replacing thrust washers if it falls outside the standard range of 0.04 - 0.24 mm (0.0016 - 0.0094 inch). To perform this task start by inspecting the piston and piston pin fit followed by deploying a piston ring expander to extract rings before disconnecting the connecting rod from the piston utilizing snap ring prying and heating the piston with subsequent tapping of the piston pin using plastic-faced hammer and brass bar and organizing all components correctly.