4. DISASSEMBLY, INSPECTION AND REASSEMBLY OF ENGINES Point 6: Piston pin and rings [Disassemble] Using the piston ring replacer (see 4.1.2 in Chapter 4), remove the piston rings. Remove the circlip and remove the piston pin by pushing it out. [Reassemble] Install each piston ring on the piston, with the punched manufacturer's mark facing upward. [Reassemble] The piston ring joints shall be staggered at by 120° intervals. Do not position the top ring joint vertical to the piston pin. The coil expander joint shall be opposite to the oil ring joint.
[Reassemble] When installing the piston pin to the rod and pis- ton, the punched match mark on the big end of the connecting rod shall be opposite to the size mark on the piston top. [Reassemble] Install the piston in the cylinder block with the punched mark on the big end of the rod on the nozzle side. (The embossed mark at the con- necting rod I-beam section shall be on the fly- wheel side.) 82E-5 – 98E-5 SERIES 4-37