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Removing and installing / replacing piston rings
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Piston ring arrangement
Fig. 1
1 Compression ring (keystone ring)
2 Compression ring (taper-face ring)
3 Oil control ring (bevelled ring)
Removing piston rings
Fig. 2
Remove the piston and conrod.
Clamp the conrod in a vice, use protective jaws.
Adjust the piston ring pliers to the piston diameter.
Fig. 3
Apply the piston ring pliers to the piston ring joint
and disengage the piston rings from the piston ring
grooves.
Note:
The coiled spring expanders mean that
the oil control ring has greater tangential
tension.
Carefully clean the piston ring grooves using a
piece of wood. Do not damage the piston ring
grooves.
Checking ring end clearance
Fig. 4
Insert the piston rings individually into the cylinder
and use a feeler gauge to determine the ring end
clearance.
Replace the piston rings. If the ring end clearance
is too large.
Ring end clearance, see “Service Data”.
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