| Fig. 1: A telescoping gauge may be used to measure the
cylinder bore diameter
|
| Fig. 2: Most rings are marked to show which side should
face upward
|
| Fig. 3: Check piston ring end-gap with a feeler blade
|
| Fig. 4: Compression ring installation
|
| Fig. 5: Oil ring installation
|
The pistons have three rings (two compression rings and one oil ring). The oil ring consists of two rails and an expander.
For service ring specifications and detailed installation productions, refer to the instructions furnished with the parts package.
When installing new rings, ring gap and side clearance should be checked as follows:
Each ring and rail gap must be measured with the ring or rail positioned squarely and at the bottom of the ring-travel area of the bore.
Each ring must be checked for side clearance in its respective piston groove by inserting a feeler gauge between the ring and its upper land. The piston grooves must be cleaned before checking the ring for side clearance specifications. To check oil ring side clearance, the oil rings must be installed on the piston.
