Suzuki Engine 2002 GRAND VITARA SQ420 Service Manual page 464

NOTE:
• Install circlip (6) with its cut part facing as shown in fig-
ure.
• Install so that circlip end gap comes within such range
as indicated by arrow "A".
1. Piston
2. Arrow mark
3. Connecting rod
4. Oil hole
5. Crankshaft pulley side
2) Install piston rings to piston :
• 1st rings (1) differs from 2nd ring (2) in thickness, shape and
marking.
Distinguish 1st ring from 2nd ring by referring to figure and
install these piston rings to piston directing marked side of
each ring toward top of piston.
• When installing oil ring (3), install spacer first and then two
rails.
3) After installing three rings (1st, 2nd and oil rings), distribute
their end gaps as shown in figure.
1. Arrow mark
2. 1st ring end gap
3. 2nd ring end gap and oil ring spacer gap
4. Oil ring upper rail gap
INSTALLATION
1) Apply engine oil to pistons, rings, cylinder walls, connecting
rod bearings and crank pins.
NOTE:
Do not apply oil between connecting rod and bearing or
between bearing cap and bearing.
ENGINE MECHANICAL (H25 ENGINE) 6A2-89
5. Oil ring lower rail gap
6. Intake side
7. Exhaust side