Push the rod and piston out through the top of the cylinder.
Oil piston ring orientation diagram.
Before removing piston clean any carbon from the top of the cylinder bore to prevent ring breakage when removing the piston.
Oil rings actual gap 015 050.
Once the expander has been installed the oil.
Release the tension of the ring.
Oil expander tabs face up as shown below.
Piston rings and connecting rod oil control ring match marks note.
It is a good idea after installing all rings on the pistons to recheck each ring on each piston for correct installation.
Using a proper ring installation tool open the oil ring just enough to allow the ring to go over the top diameter of the piston.
Rotate the oil ring support rail until antirotational locking detent falls between the opening at intersection of ring groove and wrist pin hole.
Place the ring squarely into the piston groove taking care to keep it flat.
Install oil ring support rails on the bottom of the oil ring groove with the antirotational locking detent facing downward.
The dot or marking on each ring always faces up.
Emission compliant vlv uses this ring package piston.
Rings with a groove in the outside diameter and a pip mark or dot on the side must be installed with the groove toward the bottom of the piston and pip mark towards the top of the piston.
The oil ring s main function is to control the amount of oil that makes it between the piston and bore which is necessary for lubrication and heat transfer purposes.
Step 4 install rings on piston.
One two piece oil rings.
This will allow oil which has been scraped off the cylinder wall by the top oil ring rail to fl ow radially to the oil return holes.
A larger chamfered oil hole at the top of the small end on some rod designs provides a funnel for improved oil reservoir for floating pin.
Install oil control rings.
The bottom oil ring is actually made up of three different rings two narrow rails and one expander.
However the second ring also provides a bit of oil control.
We recommend approximately 030 back clearance with our oil rings.
10 install oil ring assembly as usual.
Work the opened ring down from the top of the piston to the oil groove.
Starting with the oil rings install each ring on piston using the following orientation.
The underside of this piston features an l suffix indicating that this piston is intended for the left bank of a v engine.
In this case the manufacturer s recommendation is to align the expander ring ends with the wrist pin hole in the piston.
This piston ring manufacturer has color coded the ends of the oil control ring expander in an effort to prevent overlap during installation.
Pistons intended for the right bank will feature an r suffix.
