Cylinder head torque SUZUKI SWIFT 2000 1.G SF310 Service Workshop Manual

1. Thickness gauge IN
EX
0B-6 MAINTENANCE AND LUBRICATION
Water Pump Belt Replacement
Replace belt with a new one. Refer to SECTION 6B for replacement
procedure of pump belt.
NOTE:
When replacing belt with a new one, adjust belt tension to
5 – 7 mm (0.20 – 0.27 in.).
ITEM 1-2
Camshaft Timing Belt Replacement
Replace belt with new one. Refer to SECTION 6A or 6A1 for re-
placement procedure.
CAUTION:

Do not bend or twist timing belt.

Do not allow timing belt to come into contact with oil, wa-
ter, etc.
ITEM 1-3
Valve Lash Inspection (1.3 liter engine only)
1) Remove cylinder head cover.
2) Inspect intake and exhaust valve lash and adjust as necessary.
Refer to SECTION 6A1 for valve lash inspection and adjustment
procedure.
Valve
lash
(gap)
When cold
(Coolant temperature is
15 – 25C or 59 – 77F)When hot
(Coolant temperature is
60 – 68C or
140 – 154F)
(gap)
specifi-
cation
Intake0.13 – 0.17 mm
(0.005 – 0.007 in.)0.17 – 0.21 mm
(0.007 – 0.008 in.)
cation
Exhaust0.23 – 0.27 mm
(0.009 – 0.011 in.)0.28 – 0.32 mm
(0.011 – 0.013 in.)
Special Tool
(A): 09917-18211
Tightening Torque
(a): 12 N
.m (1.2 kg-m, 8.5 lb-ft)
3) Install cylinder head cover and tighten bolts to specification.

6A-4 ENGINE MECHANICAL (G10, 1-CAM 6-VALVES ENGINE)
CYLINDER HEAD COVER
REMOVAL
1) Disconnect negative cable at battery.
2) Remove air cleaner assembly.
3) Remove high-tension cord clamps (2) from cylinder head cover.
4) Disconnect breather hose from cylinder head cover.
5) Remove cylinder head cover nuts and then seal washers (1).
6) Remove cylinder head cover (3) from cylinder head.
INSTALLATION
1) Install cylinder head cover gasket to head cover.
Before installing gasket, check it for deterioration or damage,
and replace as necessary.
2) Install cylinder head cover (1).
Before installing seal washers, check each one for deterioration
or damage, and replace as necessary.
Tighten cover nuts to specified torque.
Tightening Torque
(a): 4.5 N
.m (0.45 kg-m, 3.5 lb-ft)
3) Install high-tension cord clamps (2) to cylinder head cover.
4) Connect breather hose to cylinder head cover.
5) Install air cleaner assembly.
6) Connect negative cable at battery.

2. Ground
1. Throttle body
2. ISC actuator
coupler
3. TP sensor
coupler
4. Fuel injector
coupler
5. EFE heater
coupler
ENGINE MECHANICAL (G10, 1-CAM 6-VALVES ENGINE) 6A-7
INSTALLATION
1) Install throttle body to intake manifold. (Refer to Section 6E.)
2) Install intake manifold gasket to cylinder head. Use a new gas-
ket.
3) Install intake manifold (1) with throttle body to cylinder head.

Install clamps (3) as shown in figure, and tighten bolts and
nuts to specification.
Tightening Torque
(a): 23 N
.m (2.3 kg-m, 17.0 lb-ft)
4) Connect breather hose to PCV valve.
5) Connect vacuum hoses.
6) Connect coolant hoses.
7) Connect fuel return and feed hoses to throttle body.
8) Connect electric lead wire.
9) Connect accelerator cable to throttle body.
10) Install air cleaner assembly to throttle body.
11) Check to ensure that all removed parts are back in place.
Reinstall any necessary parts which have not been reinstalled.
12) Refill cooling system.
13) Connect negative cable at battery.
14) Upon completion of installation, start engine and check for fuel
leaks and engine coolant leaks.
After warming up engine, adjust accelerator cable play to spec-
ification according to description in Section 6E.

1. Exhaust manifold
2. Gasket
3. Cover
4. Heated oxygen sensor
5. Pipe seal
6. Exhaust pipe
7. WU-TWC (if equipped)
8. Exhaust pipe bolt : Tightening Torque
: Do not reuse
6A-8 ENGINE MECHANICAL (G10, 1-CAM 6-VALVES ENGINE)
EXHAUST MANIFOLD
WARNING:
To avoid danger of being burned, do not service exhaust
system while it is still hot.
Service should be performed after system cools down.
REMOVAL
1) Disconnect negative cable at battery.
2) Disconnect heated oxygen sensor coupler.
Release its wire from clamps.
3) Disconnect exhaust pipe (1) from exhaust manifold (or WU-
TWC (2)).
4) Remove WU-TWC stiffener (3). (if equipped)
5) Remove exhaust manifold cover (2). (for vehicle with WU-TWC)
6) Remove exhaust manifold (1) with WU-TWC (if equipped) and
its gasket from cylinder head.

2. WU-TWC
ENGINE MECHANICAL (G10, 1-CAM 6-VALVES ENGINE) 6A-9
INSTALLATION
1) Install manifold gasket to cylinder head.
Before installing gasket, check it for deterioration or damage,
and replace as necessary.
2) Install exhaust manifold (1).
Tighten manifold bolts and nuts to specified torque.
Tightening Torque
(a): 23 N
.m (2.3 kg-m, 17.0 lb-ft)
3) Install exhaust manifold cover (2).
4) Install pipe seal, and then connect exhaust pipe (1).
Before installing pipe seal, check it for deterioration or damage,
and replace as necessary.
Tighten pipe bolts to specified torque.
Tightening Torque
(c): 43 N
.m (4.3 kg-m, 31.5 lb-ft)
5) Install WU-TWC stiffener (3). (if equipped)
6) Connect heated oxygen sensor coupler.
7) Clamp its wire securely.
8) Connect negative cable at battery.
9) Check exhaust system for exhaust gas leakage.

1. Crank timing belt pulley bolt
Direction of crankshaft
ENGINE MECHANICAL (G10, 1-CAM 6-VALVES ENGINE) 6A-13
3) Check that timing mark (3) on camshaft timing belt pulley (1) is
aligned with “V” mark (2) on cylinder head cover (4). If not, align
two marks by turning camshaft but be careful not to turn it more
than its allowable turning range which is described on previous
page.
4) Check that punch mark (2) on crank timing belt pulley (4) is
aligned with arrow mark (3) on oil pump case. If not, align two
marks by turning crankshaft but be careful not to turn it more
than its allowable turning range which is described on previous
page.
5) With two sets of marks aligned, install timing belt (1) on two pul-
leys in such a way that the drive side of belt is free of any slack,
and with tensioner plate pushed up by finger.
And then install tensioner spring and spring damper (2) as
shown in figure, and handtighten tensioner stud.
NOTE:

When installing timing belt, match arrow mark (
) on
timing belt with rotating direction of crankshaft.

In this state, No.1 piston is at top dead center of compres-
sion stroke.
6) To take up slack of timing belt, turn crankshaft two rotations
clockwise after installing it. After making sure that belt is free
from slack, tighten tensioner stud (1) first and then tensioner bolt
(2) to each specified torque.
Then confirm again that two sets of marks are aligned respec-
tively.
Tightening Torque
(a): 11 N
.m (1.1 kg-m, 8.0 lb-ft)
(b): 27 N
.m (2.7 kg-m, 19.5 lb-ft)

6A-14 ENGINE MECHANICAL (G10, 1-CAM 6-VALVES ENGINE)
7) Install timing belt outside cover.
Before installing, make sure that rubber seal (1) is between wa-
ter pump and oil pump case and another between water pump
and cylinder head.
Tightening Torque
(c): 11 N
.m (1.1 kg-m, 8.0 lb-ft)
8) Install crankshaft pulley (2).
Tighten crankshaft pulley bolts (1).
Tightening Torque
(d): 16 N
.m (1.6 kg-m, 11.5 lb-ft)
9) Install water pump pulley and water pump belt.
Adjust the belt tension to the specification.
Refer to Section 6B for procedure to adjust the belt tension.
10) Install air cleaner assembly.
11) Install fender apron extension of right side.
12) Connect negative cable at battery.

1. Cylinder head cover
2. Gasket
3. Cylinder head
4. Camshaft housing No.1:
Apply sealant 99000-31110 to mating surface.
5. Camshaft housing No.2
6. Camshaft housing No.3:
Apply sealant 99000-31110 to mating surface.
7. Camshaft
8. Oil seal
9. Valve lash adjuster
10. Camshaft housing bolt
1. Crankshaft timing belt pulley: Tightening Torque
: Apply engine oil to sliding
: surfaces of each part.
ENGINE MECHANICAL (G10, 1-CAM 6-VALVES ENGINE) 6A-15
CAMSHAFT AND HYDRAULIC VALVE LASH ADJUSTER
REMOVAL
1) Disconnect negative cable at battery.
2) Remove cylinder head cover as previously outlined.
3) Remove distributor and then its case from cylinder head.
4) Remove crankshaft pulley, timing belt outside cover and timing
belt as previously outlined.
After removing timing belt, set key (2) on crankshaft in position
as shown in figure by turning crankshaft. This is to prevent inter-
ference between valves and piston when reinstalling camshaft.
5) Remove camshaft timing belt pulley (1).
Lock camshaft (2) with a proper size rod (3) inserted into hole (10
mm, 0.39 in.) in it as shown and then loosen camshaft timing belt
pulley bolt.
NOTE:
Mating surfaces of cylinder head and cover must not be
damaged in this work. So, put clean shop cloth (4) between
rod and mating surfaces, and use care not to bump rod
against mating surfaces hard when loosening bolt.

ENGINE MECHANICAL (G10, 1-CAM 6-VALVES ENGINE) 6A-17
INSPECTION
Camshaft journal wear:

Check camshaft journals and camshaft housings for pitting,
scratches, wear or damage.
If any malcondition is found, replace camshaft or cylinder head
with housing. Never replace cylinder head without replacing
housings.
Check clearance by using gaging plastic (1). The procedure is as
follows.
1) Clean housings and camshaft journals.
2) Make sure that all valve lash adjusters are removed and install
camshaft to cylinder head.
3) Place a piece of gaging plastic the full width of journal of cam-
shaft (parallel to camshaft).
4) Install housings as outlined on the following page and evenly
torque housing bolts to specified torque. Housings MUST be
torqued to specification in order to assure proper reading of
camshaft journal clearance.
NOTE:
Do not rotate camshaft while gaging plastic is installed.
5) Remove housing, and using scale (2) on gaging plastic envel-
op, measure gaging plastic width at its widest point.
JournalStandardLimitJournal
clearance0.040 – 0.082 mm
(0.0016 – 0.0032 in.)0.12 mm
(0.0047 in.)
If measured camshaft journal clearance exceeds limit, mea-
sure journal (housing) bore and outside diameter of camshaft
journal. Replace camshaft or cylinder head assembly which-
ever the difference from specification is greater.
Item
Standard
Camshaft journalNo.126.000 – 26.021 mm
(1.0236 – 1.0244 in.)
j
bore dia.No.2 &
No.330.000 – 30.021 mm
(1.1811 – 1.1819 in.)
Camshaft journalNo.125.939 – 25.960 mm
(1.0212 – 1.0220 in.)
j
O.D.No.2 &
No.329.939 – 29.960 mm
(1.1787 – 1.1795 in.)

2. No.2 housing
3. No.3 housing
3. Rod
4. Shop cloth
ENGINE MECHANICAL (G10, 1-CAM 6-VALVES ENGINE) 6A-19

As camshaft housing No.1 (1) retains camshaft in proper
position as to thrust direction, make sure to first fit No.1 hous-
ing to No.1 journal of camshaft securely.

After applying engine oil to housing bolts, tighten them tem-
porarily first. Then tighten them by following sequence as
shown in figure.
Tighten a little at a time and evenly among bolts and repeat
tightening sequence three to four times before they are tight-
ened to specified torque.
Special Tool
(A): 09919-16010
Tightening Torque
(a): 11 N
.m (1.1 kg-m, 8.0 lb-ft)
5) Install camshaft oil seal.
After applying engine oil to oil seal lip, press-fit camshaft oil
seal till oil seal surface becomes flush with housing surface.
6) Install camshaft timing belt pulley (1) to camshaft (2) after
installing dwell pin to camshaft.
With locking camshaft as shown in figure, tighten pulley bolt to
specified torque.
Tightening Torque
(b): 60 N
.m (6.0 kg-m, 43.5 lb-ft)
7) Install cylinder head cover to cylinder head as previously out-
lined.
8) Install timing belt, timing belt outside cover, crankshaft pulley,
water pump pulley and water pump belt as previously outlined.
9) Install distributor case and distributor.
Refer to Section 6F for installation.
10) Install air cleaner assembly as previously outlined.
11) Connect negative cable at battery.
12) Adjust ignition timing.
Refer to Section 6F for adjustment.