head SUZUKI SX4 2006 1.G Service Service Manual

Downloaded from www.Manualslib.com manuals search engine 1D-40 Engine Mechanical:
Valves and Cylinder Head Removal and
Installation
S6RW0D1406026
Removal
1) Remove engine assembly from vehicle referring to
“Engine Assembly Removal and Installation”.
2) Remove oil pan referring to “Oil Pan and Oil Pump
Strainer Removal and Installation in Section 1E”.
3) Remove cylinder head cover referring to “Cylinder
Head Cover Removal and Installation”.
4) Remove timing chain cover referring to Steps 2) to
11) of “Removal” in “Timing Chain Cover Removal
and Installation”.
5) Remove timing chain referring to Steps 2) to 6) of
“Removal” in “Timing Chain and Chain Tensioner
Removal and Installation”.
6) Remove intake and exhaust camshafts referring to
Steps 3) to 8) of “Removal” in “Camshaft, Tappet and
Shim Removal and Installation”.
7) Loosen cylinder head bolts in such order as
indicated in figure by using a 12 corner socket
wrenches and remove them.
NOTE
Don’t forget to remove bolt (M8) (1) as shown
in figure.

8) Check all around cylinder head for any other parts
required to be removed or disconnected and remove
or disconnect whatever necessary.
9) Remove exhaust manifold, if necessary referring to
“Exhaust Manifold Removal and Installation in
Section 1K”.
10) Remove cylinder head with intake manifold and
exhaust manifold. Use lifting device, if necessary.
Installation
1) Clean mating surface of cylinder head and cylinder
block. Remove oil, old gasket and dust from mating
surface.
2) Make sure that oil jet (venturi plug) (1) is not
clogged. If it is not installed, install it as specified
torque.
Tightening torque
Venturi plug (a): 5 N·m (0.5 kgf-m, 3.5 lb-ft)
3) Install knock pins (1) to cylinder block.
4) Install new cylinder head gasket (2) to cylinder block.
“Top” or triangle mark provided on gasket comes to
crankshaft pulley side, facing up (toward cylinder
head side).
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Downloaded from www.Manualslib.com manuals search engine Engine Mechanical: 1D-41
5) Install cylinder head to cylinder block.
Apply engine oil to new cylinder head bolts and
tighten them gradually as follows.
a) Tighten cylinder head bolts (“1” – “10”) to 20 N⋅m
(2.0 kgf-m, 14.5 lb-ft) according to numerical
order as shown by using a 12 corner socket
wrenches.
b) In the same manner as in Step a), tighten them
to 40 N⋅m (4.0 kgf-m, 29.0 lb-ft).
c) Turn all bolts 60° according to numerical order in
figure.
d) Repeat Step c).
e) Tighten cylinder head bolt (M8) (1) to specified
torque.
NOTE
Be sure to tighten M8 bolt (1) after securing
the other bolts.

Tightening torque
Cylinder head bolt for M8 (a): Tighten 25 N⋅m
(2.5 kgf-m, 18.0 lb-ft) by the specified
procedure
Cylinder head bolt for M10 (b): Tighten 20
N⋅m (2.0 kgf-m, 14.5 lb-ft), 40 N⋅m (4.0 kgf-m,
29.0 lb-ft), 60° and 60° by the specified
procedure
NOTE
• If cylinder head bolts (M10) are reused,
check thread diameters of cylinder head
bolt (1) for deformation according to the
follows and replace them with new ones if
thread diameter difference exceeds limit.
• Measure each thread diameter of cylinder
head bolt (1) at “A” on 83.5 mm (2.81 in.)
from seat side of flange bolt and “B” on
115 mm (4.53 in.) from seat side of flange
bolt by using a micrometer (2).
Then calculate difference in diameters (“A”
– “B”). If it exceeds limit, replace with new
one.

Cylinder head bolt diameter measurement
points
“a”: 83.5 mm (2.81 in.)
“b”: 115 mm (4.53 in.)
Cylinder head bolt diameter difference
(deformation)
Limit (“A” – “B”): 0.1 mm (0.004 in.)
6) Install camshafts, tappet and shim referring to
“Camshaft, Tappet and Shim Removal and
Installation”.
7) Install timing chain referring to “Timing Chain and
Chain Tensioner Removal and Installation”.
8) Install timing chain cover referring to “Timing Chain
Cover Removal and Installation”.
9) Install cylinder head cover referring to “Cylinder
Head Cover Removal and Installation”.
10) Install oil pan referring to “Oil Pan and Oil Pump
Strainer Removal and Installation in Section 1E”.
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“A”
“a”
“b”“B”

1
12
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Downloaded from www.Manualslib.com manuals search engine 1D-42 Engine Mechanical:
Valves and Cylinder Head Disassembly and
Assembly
S6RW0D1406027
Disassembly
1) For ease in servicing cylinder head, remove intake
manifold, injectors, exhaust manifold from cylinder
head.
2) Using special tools (Valve lifter), compress valve
spring and then remove valve cotters (1) also by
using special tool (Forceps).
Special tool
(A): 09916–14510
(B): 09916–14521
(C): 09916–845113) Release special tools (Valve lifter), and remove
spring retainer and valve spring.
4) Remove valve from combustion chamber side.
5) Remove valve stem seal (1) from valve guide and
valve spring seat (2).
NOTE
Do not reuse valve stem seal once
disassembled. Be sure to use new seal when
assembling.

6) Using special tool (Valve guide remover), drive valve
guide out from combustion chamber side to valve
spring side.
Special tool
(A): 09916–44910
NOTE
Do not reuse valve guide once disassembled.
Be sure to use new valve guide (oversize)
when assembling.

7) Place disassembled parts except valve stem seal
and valve guide in order so that they can be installed
in their original position.
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Assembly
1) Before installing valve guide into cylinder head, ream
guide hole with special tool (10.5 mm reamer) so as
to remove burrs and make it truly round.
Special tool
(A): 09916–34542
(B): 09916–37320
2) Install valve guide to cylinder head.
Heat cylinder head uniformly at a temperature of 80
to 100 °C (176 to 212 °F) so that head will not be
distorted, and drive new valve guide into hole with
special tools.
Drive in new valve guide until special tool (Valve
guide installer) contacts cylinder head.
After installing, make sure that valve guide protrudes
by specified dimension “a” from cylinder head.
Special tool
(A): 09916–58210
(B): 09916–56011
NOTE
• Never reuse valve guide once
disassembled. Make sure to install new
valve guide (Oversize).
• Intake and exhaust valve guides are
identical.

Valve guide protrusion (In and Ex)
“a”: 11.1 – 11.5 mm (0.437 – 0.452 in.)3) Ream valve guide bore with special tool (5.5 mm
reamer). After reaming, clean bore.
Special tool
(A): 09916–34542
(B): 09916–34550
4) Install valve spring seat to cylinder head.
5) Install new valve stem seal (1) to valve guide.
After applying engine oil to seal and spindle of
special tool (Valve guide installer handle), fit oil seal
to spindle, and then install seal to valve guide by
pushing special tool by hand.
After installing, check to be sure that seal is properly
fixed to valve guide.
Special tool
(A): 09917–98221
(B): 09916–58210
NOTE
• Do not reuse seal once disassembled. Be
sure to install new seal.
• When installing, never tap or hit special
tool with a hammer or else. Install seal to
guide only by pushing special tool by
hand. Tapping or hitting special tool may
cause damage to seal.

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Downloaded from www.Manualslib.com manuals search engine 1D-46 Engine Mechanical:
Valve head radial runout
Check each valve for radial runout with a dial gauge and
“V” block. To check runout, rotate valve slowly. If runout
exceeds its limit, replace valve.
Valve head radial runout
Limit: 0.08 mm (0.003 in.)
Seating contact width
Create contact pattern on each valve in the usual
manner, i.e., by giving uniform coat of marking
compound to valve seat and by rotatingly tapping seat
with valve head. Valve lapper (tool used in valve lapping)
must be used.
Pattern produced on seating face of valve must be a
continuous ring without any break, and the width of
pattern must be within specified range.
Standard seating width “a” revealed by contact
pattern on valve face
Intake and Exhaust: 1.0 – 1.4 mm (0.0389 – 0.0551
in.)Valve seat repair
A valve seat not producing a uniform contact with its
valve or showing width of seating contact that is out of
specified range must be repaired by regrinding or by
cutting and regrinding and finished by lapping.
1)Exhaust valve seat:
Use valve seat cutters (1) to make two cuts as
illustrated in figure. Two cutters must be used: the
first for making 22° angle, and the second for making
45° angle. The second cut must be made to produce
desired seat width.
Seat width for exhaust valve seat
“a”: 1.0 – 1.4 mm (0.0389 – 0.0551 in.)
2)Intake valve seat:
Use valve seat cutters (1) to make three cuts as
illustrated in figure. Three cutters must be used: the
1st for making 22° angle, the 2nd for making 60°
angle, and 3rd for making 45° angle. The 3rd cut
(45°) must be made to produce desired seat width.
Seat width for intake valve seat
“b”: 1.0 – 1.4 mm (0.0389 – 0.0551 in.)
3)Valve lapping:
Lap valve on seat in two steps, first with coarse size
lapping compound applied to face and the second
with fine-size compound, each time using valve
lapper according to usual lapping method.
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Downloaded from www.Manualslib.com manuals search engine Engine Mechanical: 1D-47
Cylinder Head InspectionS6RW0D1406029
• Remove all carbon deposits from combustion
chambers.
NOTE
Do not use any sharp-edged tool to scrape
off carbon deposits. Be careful not to scuff or
nick metal surfaces when decarbonizing. The
same applies to valves and valve seats, too.

• Check cylinder head for cracks on intake and exhaust
ports, combustion chambers, and head surface. Using
a straightedge and thickness gauge, check flatness of
gasketed surface at a total of 6 locations. If distortion
limit is exceeded, correct gasketed surface with a
surface plate and abrasive paper of about #400
(Waterproof silicon carbide abrasive paper): place
abrasive paper on and over surface plate, and rub
gasketed surface against paper to grind off high spots.
Should this fail to reduce thickness gauge readings to
within limit, replace cylinder head.
Leakage of combustion gases from this gasketed joint
is often due to warped gasketed surface: such
leakage results in reduced power output.Distortion for cylinder head surface on piston side
Limit: 0.03 mm (0.001 in.)
• Distortion of manifold seating faces:
Check seating faces of cylinder head for manifolds,
using a straightedge and thickness gauge, in order to
determine whether these faces should be corrected or
cylinder head replaced.
Distortion for cylinder head surface on intake and
exhaust manifold
Limit: 0.05 mm (0.002 in.)
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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-63
9) Install rear oil seal housing (1) and tighten new bolts
to specified torque by using special tool.
Special tool
(A): 09911–97720
Tightening torque
Rear oil seal housing bolt: 11 N·m (1.1 kgf-m, 8.0
lb-ft)
10) Install flywheel (drive plate for A/T).
Using special tool, lock flywheel or drive plate, and
tighten flywheel or drive plate bolts to specified
torque.
NOTE
Use new flywheel or drive plate bolts.

Special tool
(A): 09924–17810
Tightening torque
Flywheel or drive plate bolt (a): 70 N·m (7.0 kgf-
m, 51.0 lb-ft)
11) Install piston and connecting rod referring to
“Pistons, Piston Rings, Connecting Rods and
Cylinders Removal and Installation”.
12) Install cylinder head referring to “Valves and Cylinder
Head Removal and Installation”.13) Install camshafts, tappet and shim referring to
“Camshaft, Tappet and Shim Removal and
Installation”.
14) Install timing chain referring to “Timing Chain and
Chain Tensioner Removal and Installation”.
15) Install timing chain cover referring to “Timing Chain
Cover Removal and Installation”.
16) Install cylinder head cover referring to “Cylinder
Head Cover Removal and Installation”.
17) Install oil pan referring to “Oil Pan and Oil Pump
Strainer Removal and Installation in Section 1E”.
18) Install engine assembly to vehicle referring to
“Engine Assembly Removal and Installation”.
Crankshaft InspectionS6RW0D1406039
Crankshaft Runout
Using a dial gauge, measure runout at center journal.
Rotate crankshaft slowly. If runout exceeds its limit,
replace crankshaft.
Crankshaft runout
Limit: 0.02 mm (0.0008 in.)
Crankshaft Thrust Play
1) Measure this play with crankshaft set in cylinder
block in the normal manner, that is with thrust
bearing (1) and journal bearing caps installed.
Thickness of crankshaft thrust bearing
Standard: 2.470 – 2.520 mm (0.0972 – 0.0992 in.)
Oversize (0.125 mm (0.0049 in.)): 2.533 – 2.583
mm (0.0997 – 0.1017 in.)
A: Crankshaft side
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