2006 SUZUKI SX4 Oil ring

Downloaded from www.Manualslib.com manuals search engine Engine Mechanical: 1D-49
Pistons, Piston Rings, Connecting Rods and Cylinders ComponentsS6RW0D1406031
Pistons, Piston Rings, Connecting Rods and
Cylinders Removal and Installation
S6RW0D1406032
Removal
1) Remove engine assembly from vehicle referring to
“Engine Assembly Removal and Installation”.
2) Remove cylinder head referring to “Valves and
Cylinder Head Removal and Installation”.
3) Mark cylinder number on all pistons, connecting rods
and connecting rod caps using silver pencil or quick
drying paint.
4) Remove rod bearing caps.
5) Install guide hose (1) over threads of rod bolts.
This prevents damage to crank pin and rod bolt
threads when removing connecting rod.6) Decarbonize top of cylinder bore before removing
piston from cylinder.
7) Push piston and connecting rod assembly out
through the top of cylinder bore.
1. Top ring 8. Piston pin
2. 2nd ring 9. Piston pin circlip
3. Oil ring 10. Bearing cap nut
4. Piston : Tighten 15 N⋅m (1.5 kgf-m, 11.0 lb-ft), 45° and 45° by the specified procedure.
5. Connecting rod
: See “A”: Apply engine oil to sliding surface of each part.
6. Connecting rod bearing cap
: See “B”: Do not reuse.
7. Connecting rod bearing
: See “C”
“A”: Apply engine oil to sliding surface except inner surface of big end, and rod bolts. Make sure rod bolt diameter when reuse it due to plastic deformation
tightening. Refer to “Piston Pins and Connecting Rods Inspection”.
“B”: Point arrow mark on cap to crankshaft pulley side.
“C”: Do not apply oil between connecting rod and bearing or between bearing cap and bearing.
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Downloaded from www.Manualslib.com manuals search engine 1D-50 Engine Mechanical:
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.

2) Install guide hoses (1) over connecting rod bolts.
These guide hoses protect crank pin and threads of
rod bolt from damage during installation of
connecting rod and piston assembly.
3) When installing piston and connecting rod assembly
into cylinder bore, point front mark (1) on piston head
to crankshaft pulley side.4) Install piston and connecting rod assembly into
cylinder bore. Use special tool (Piston ring
compressor) to compress rings. Guide connecting
rod into place on crankshaft.
Using a hammer handle, tap piston head to install
piston into bore. Hold ring compressor firmly against
cylinder block until all piston rings have entered
cylinder bore.
Special tool
(A): 09916–77310
5) Install bearing cap (1):
Point arrow mark (2) on cap to crankshaft pulley
side.
After applying engine oil to rod bolts and tighten cap
nuts (3) gradually as follows.
a) Tighten all cap nuts to 15 N⋅m (1.5 kgf-m, 11.0 lb-
ft).
b) Retighten them to 45°.
c) Repeat Step b) once again.
NOTE
Before installing bearing cap, make sure that
checking for connecting rod bolt
deformation. Refer to “Piston Pins and
Connecting Rods Inspection”.

Tightening torque
Connecting rod bearing cap nut (a): Tighten
15 N⋅m (1.5 kgf-m, 11.0 lb-ft), 45° and 45° by
the specified procedure
6) Install cylinder head referring to “Valves and Cylinder
Head Removal and Installation”.A: Crankshaft pulley side B: Flywheel side
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Downloaded from www.Manualslib.com manuals search engine Engine Mechanical: 1D-51
Pistons, Piston Rings, Connecting Rods and
Cylinders Disassembly and Assembly
S6RW0D1406033
Disassembly
1) Using piston ring expander, remove two
compression rings (Top and 2nd) and oil ring from
piston.
2) Remove piston pin from connecting rod as follows.
a) Ease out piston pin circlips (1), as shown.
b) Force piston pin out.
Assembly
1) Decarbonize piston head and ring grooves using a
suitable tool.
2) Install piston pin to piston (1) and connecting rod (2):
a) After applying engine oil to piston pin and piston
pin holes in piston and connecting rod.
b) Installing connecting rod to piston.
NOTE
Be sure to position front mark (4) on piston
and oil hall (5) of connecting rod at specified
position as shown in figure.

c) Insert piston pin to piston and connecting rod.
d) Install piston pin circlips (3).
NOTE
Circlip should be installed with its cut part
facing as shown in figure. Install so that
circlip end gap comes within such range as
indicated by arrow.

3) Install piston rings to piston:
• As indicated in figure, 1st and 2nd rings have “T”
mark (4) respectively. When installing these piston
rings to piston, direct marked side of each ring
toward top of piston.
• 1st ring (1) differs from 2nd ring (2) in thickness,
shape and color of surface contacting cylinder
wall.
Distinguish 1st ring from 2nd ring by referring to
the figure.
• When installing oil ring (3), install spacer first and
then two rails.
4) After installing three rings (1st, 2nd and oil rings),
distribute their end gaps as shown in figure.
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1. Front mark 4. Oil ring upper rail gap
2. 1st ring end gap 5. Oil ring lower rail gap
3. 2nd ring end gap and oil ring spacer gap
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Downloaded from www.Manualslib.com manuals search engine Engine Mechanical: 1D-53
Piston clearance
Measure cylinder bore diameter and piston diameter to
find their difference which is piston clearance. Piston
clearance should be within specification as follows. If it is
out of specification, rebore cylinder and use oversize
piston.
NOTE
Cylinder bore diameters used here are
measured in thrust direction at two positions.

Piston clearance
Standard (used piston): 0.032 – 0.061 mm (0.0013 –
0.0024 in.)
Standard (new piston with coating): 0.010 – 0.051
mm (0.0004 – 0.0020 in.)
Limit: 0.161 mm (0.0065 in.)
Ring groove clearance
Before checking, piston grooves must be clean, dry and
free of carbon deposits.
Fit new piston ring (1) into piston groove, and measure
clearance between ring and ring land by using thickness
gauge (2). If clearance is out of specification, replace
piston.
Ring groove clearance
Piston Ring
Piston ring end gap
To measure end gap, insert piston ring (2) into cylinder
bore and then measure the gap by using thickness
gauge (1).
If measured gap exceeds limit, replace ring.
NOTE
Decarbonize and clean top of cylinder bore
before inserting piston ring.

Piston ring end gap
“a”: 19.5 mm (0.77 in.)
Standard Limit
To p r i n g0.03 – 0.07 mm
(0.0012 – 0.0028 in.)0.12 mm (0.0047 in.)
2nd ring0.02 – 0.06 mm
(0.0008 – 0.0024 in.)0.10 mm (0.0039 in.)
Oil ring0.03 – 0.17 mm
(0.0012 – 0.0067 in.)—
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Item Standard Limit
To p r i n g0.20 – 0.35 mm
(0.0079 – 0.0138 in.)0.7 mm (0.0276 in.)
2nd ring0.35 – 0.50 mm
(0.0138 – 0.0197 in.)1.0 mm (0.0394 in.)
Oil ring0.20 – 0.70 mm
(0.0079 – 0.0276 in.)1.2 mm (0.0472 in.)
“a”: 120 mm (4.72 in.)
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Downloaded from www.Manualslib.com manuals search engine 1D-56 Engine Mechanical:
Connecting Rod Bearing General Information
Service connecting rod bearings are available in
standard size and 0.25 mm (0.0098 in.) undersize
bearing, and standard size bearing has 5 kinds of
bearings differing in tolerance.
For identification of undersize bearing, it is painted red at
the position as indicated in figure, undersize bearing
thickness is 1.605 – 1.615 mm (0.0632 – 0.0635 in.) at
the center of it.
Connecting Rod Bearing Visual Inspection
Inspect bearing shells for signs of fusion, pitting, burn or
flaking and observe contact pattern. Bearing shells
found in defective condition must be replaced.
Connecting Rod Bearing Clearance
1) Before checking bearing clearance, clean bearing
and crank pin.
2) Install bearing in connecting rod and bearing cap.
3) Place a piece of gauging plastic (1) to full width of
crank pin as contacted by bearing (parallel to
crankshaft), avoiding oil hole.4) Install rod bearing cap (1) to connecting rod.
When installing cap, be sure to point arrow mark (2)
on cap to crankshaft pulley side, as shown in figure.
After applying engine oil to rod bolts, tighten cap nuts
(3) gradually as follows.
a) Tighten all cap nuts to 15 N⋅m (1.5 kgf-m, 11.0 lb-
ft)
b) Retighten them to 45°
c) Repeat Step b) once again.
Tightening torque
Connecting rod bearing cap nut (a): Tighten
15 N⋅m (1.5 kgf-m, 11.0 lb-ft) 45° and 45° by
the specified procedure
5) Remove cap and using a scale (1) on gauging
plastic envelope (2), measure gauging plastic (2)
width at the widest point (clearance).
If clearance exceed its limit, use a new standard size
bearing referring to “Selection of Connecting Rod
Bearings: ”.
After selecting new bearing, recheck clearance.
Connecting rod bearing clearance
Standard: 0.029 – 0.047 mm (0.0011 – 0.0018 in.)
Limit: 0.065 mm (0.0026 in.)
6) If clearance can not be brought to its limit even by
using a new standard size bearing, use next thicker
bearing and recheck clearance or regrind crank pin
to undersize and use 0.25 mm undersize bearing.
1. Red paint
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Downloaded from www.Manualslib.com manuals search engine Engine Mechanical: 1D-59
Main Bearings, Crankshaft and Cylinder Block ComponentsS6RW0D1406037
I6RW0D140003-01
1. CKP sensor
: See “A”11. Rear oil seal 21. Oil filter adapter bolt
2. Knock sensor 12. Input shaft bearing 22. Spring pin
3. Cylinder block 13. Flywheel or drive plate 23. Sensor plate bolt
4. Venturi plug 14. Main bearing cap 24. Oil pressure switch

Downloaded from www.Manualslib.com manuals search engine 1D-60 Engine Mechanical:
Main Bearings, Crankshaft and Cylinder Block
Removal and Installation
S6RW0D1406038
Removal
1) Remove engine assembly from vehicle referring to
“Engine Assembly Removal and Installation”.
2) Remove clutch cover, clutch disc and flywheel (drive
plate for A/T) by using special tool.
Special tool
(A): 09924–178103) Remove piston and connecting rod referring to
“Pistons, Piston Rings, Connecting Rods and
Cylinders Removal and Installation”.
4) Remove rear oil seal housing (1).
5) Loosen main bearing cap No.1 and No.2 bolts in
such order as indicated in figure and remove them.
6) Remove crankshaft from cylinder block.
7) Remove sensor plate from crankshaft.
5. Main bearing
: See “B”15. Flywheel or drive plate bolt : 22 N⋅m (2.2 kgf-m, 16.0 lb-ft)
6. Sensor plate 16. Rear oil seal housing mounting bolt : 5 N⋅m (0.5 kgf-m, 4.0 lb-ft)
7. Crankshaft timing sprocket key 17. Main bearing cap No.2 bolt : 70 N⋅m (7.0 kgf-m, 51.0 lb-ft)
8. Crankshaft 18. Main bearing cap No.1 bolt
: See “D”: Tighten 25 N⋅m (2.5 kgf-m, 18.0 lb-ft) by the specified
procedure.
9. Thrust bearing 19. O-ring : Tighten 30 N⋅m (3.0 kgf-m, 22.0 lb-ft), 50 N⋅m (5.0 kgf-
m, 36.5 lb-ft) and 60° by the specified procedure.
10. Rear oil seal housing
: See “C”20. Oil filter adapter case : 11 N⋅m (1.1 kgf-m, 8.0 lb-ft)
“A”: When installing CKP sensor, use new sensor mounting bolt. : 13 N⋅m (1.3 kgf-m, 9.5 lb-ft)
“B”: Upper half of bearing has an oil groove.
Do not apply oil between connecting rod and bearing or between bearing cap and
bearing.:10 N⋅m (1.0 kgf-m, 7.5 lb-ft)
“C”: Apply sealant 99000-31250 to mating surface. : 25 N⋅m (2.5 kgf-m, 18.0 lb-ft)
“D”: Make sure main bearing cap No.1 bolt deformation when reuse it due to plastic
deformation tightening referring to “Main Bearings Inspection”.: Do not reuse.
: Apply engine oil to inside / sliding surface.
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Downloaded from www.Manualslib.com manuals search engine Engine Mechanical: 1D-61
Installation
NOTE
• Use new bearing cap No.1 bolts. They are
deformed once they are used because they
are plastic deformation tightening bolts.
• All parts to be installed must be perfectly
clean.
• Be sure to oil crankshaft journals, journal
bearings, thrust bearings, crankpins,
connecting rod bearings, pistons, piston
rings and cylinder bores.
• Journal bearings, bearing caps,
connecting rods, rod bearings, rod bearing
caps, pistons and piston rings are in
combination sets. Do not disturb such
combination and make sure that each part
goes back to where it came from, when
installing.

1) Install sensor plate (1) to crankshaft (2) and tighten
bolts to specified torque.
NOTE
When installing sensor plate, align spring pin
(3) on crankshaft and hole of sensor plate.

Tightening torque
Sensor plate bolt (a): 11 N·m (1.1 kgf-m, 8.0 lb-ft)2) Install main bearings to cylinder block.
Upper half of bearing (1), has an oil groove (2).
Install it to cylinder block (3), and the other half
without oil groove to bearing cap.
Make sure that two halves are painted in the same
color.
3) Confirm that dowel pins (1) are installed to intake
side of each journal.
4) Install crankshaft to cylinder block.
5) Install thrust bearings (1) to cylinder block between
No.2 and No.3 cylinders. Face oil groove (2) sides to
crank webs.
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