Hyundai 20G-7, Service Manual

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MAIN MOVING SYSTEM
2-51
2. To measure the end gap of piston ring, insert the piston
ring to the cylinder bore. At this time, smoothly insert the
ring to the piston so as to place the ring and cylinder wall to
right position.
After this, smoothly insert the ring to the piston.
And then, pull out the piston upward and measure gap us-
ing a feeler gauge. When the gap exceeds the limit, re-
place the piston ring.
Item
No.1 piston ring end gap
No.2 piston ring end gap
Oil ring end gap
Limit
1mm
1mm
1mm
Specified value
0.23 ~ 0.38
0.33 ~ 0.48
0.20 ~ 0.60
When just replacing the ring without correction of cylinder
bore, place the ring to the cylinder lower part where less
worn-out and measure the gap.
When replacing the ring, use the same size of ring.
Piston ring over size
Mark
None
25
50
75
1.00
STD
0.25mm OS
0.50mm OS
0.75mm OS
1.00mm OS
Item
NOTE
Size mark is placed on the top of the ring.
L4GC080A
CONNECTING ROD
1. When installing the connecting rod cap, refer to the cylin-
der numbers on the rod end cap which are marked during
disassembly.
When installing a new connecting rod, align the bearing
with the notch.
2. If both end thrust surfaces of the connecting rod are
damaged, partially worn, or the inside of small end is too
rough, replace the connecting rod.
No.1
No.2