Apr. 2007
2
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DSC48
417W269A
417W268A
► PISTON RING AND PISTON PIN
1. Pull out the piston ring with a piston ring replacing tool.
2. Remove the piston pin.
<When reassembling>
• Clean all the parts before assembling.
• Heat the piston in approx. 80°C of oil for 10 to 15 min-
utes, before inserting the piston pin into the piston.
• When installing the piston and connecting rod, ensure
the "→" mark on the piston and the mark on the con-
necting rod to face the injection pump.
• Install the piston rings with their manufacturer's mark
facing upward.
• Install the expander in the oil ring with its gap opposite
to the gap of the oil ring.
• Install the top ring with its gap at 90° from the piston pin
to the exhaust port.
• Install the second ring and oil ring with their gap at ev-
ery 120°.
417W267A
(1) Piston pin (8) Connecting rod cap
(2) Piston (9) Mark
(3) Snap ring (10) Casting mark
(4) Compression ring1 (11) Expander coil
(5) Compression ring2 (12) Oil ring end gap
(6) Oil ring (13) Manufacturer's mark
(7) Connecting rod
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