crankshaft SUZUKI SWIFT 2000 1.G SF310 Service Owner's Guide

ENGINE MECHANICAL (G13B, 1-CAM 16-VALVES ENGINE) 6A1-3
ENGINE LUBRICATION
The oil pump is of a trochoid type, and mounted on crankshaft at crankshaft pulley side.
Oil is drawn up through oil pump strainer and passed through pump to oil filter.
The filtered oil flows into two paths in cylinder block. In one path, oil reaches crankshaft journal bearings.
Oil from crankshaft journal bearings is supplied to connecting rod bearings by means of intersecting passages
drilled in crankshaft, and then injected from a small hole provided on big end of connecting rod to lubricate piston,
rings, and cylinder wall.
In another path, oil goes up to cylinder head and lubricates camshaft journals, rocker arms, camshaft, etc., passing
through oil gallery in rocker arm shaft.
An oil relief valve is provided on oil pump. This valve starts relieving oil pressure when the pressure comes over
about 400 kPa (4.0 kg / cm
2, 56.9 psi). Relieved oil drains back to oil pan.

1. Rocker arm shaft
2. Rocker arm (EX)
3. Intake valve
4. Exhaust valve5. Rocker arm (IN)
6. Camshaft
7. Clip
8. PivotEx In
CYLINDER BLOCK
The cylinder block is made of cast aluminum alloy and
has 4 cylinders arranged “In-Line”. A cylindrical cast
iron sleeve is installed in each cylinder.
CRANKSHAFT AND MAIN
BEARINGS
A monoblock casting crankshaft is supported by
5 main bearings which are of precision insert type.
Four crank pins on the crankshaft are positioned 180
apart.
PISTONS, RINGS, PISTON PINS AND
CONNECTING RODS
The piston is cast aluminum alloy, and has two com-
pression rings and one oil ring.
Among two compression rings (top and 2nd rings),
the outer surface of the top ring is treated with hard
chromium for improvement in abrasion resistance.
The oil ring consists of two rails and one spacer. The
piston pin is offset 0.5 mm towards the major thrust
side.This allows a gradual change in thrust pressure
against the cylinder wall as the piston travels its path.
Pins, made of chromium steel, have a floating fit in the
pistons and in the connecting rods. The connecting
rods are made of forged steel, and the rod bearings
are of precision insert type.
CYLINDER HEAD AND VALVE TRAIN
The cylinder head is made of aluminum casting. The
supporting part of the camshaft is an independent cap
type. The combustion chamber has 4 valves and uses
the center plug type pent roof shape for higher intake
and exhaust efficiency.
As the intake side rocker arm is end pivot type, it
swings according to the camshaft movement to open
and close the intake valve.
On the other hand, the exhaust side rocker arm is see-
saw type. It swings with the rocker arm shaft as its
supporting point and according to the camshaft
movement to open and close the exhaust valve.
6A1-4 ENGINE MECHANICAL (G13B, 1-CAM 16-VALVES ENGINE)

2
IN
EX (A)
1
ENGINE MECHANICAL (G13B, 1-CAM 16-VALVES ENGINE) 6A1-9
VALVE LASH (CLEARANCE)
1) Remove negative cable at battery.
2) Remove cylinder head cover referring to item “Cylinder Head
cover”.
3) Remove engine under cover of right side from body.
4) Using special tool and wrench (1), turn crankshaft pulley clock-
wise until “V” mark (2) (in white paint) on pulley aligns with “0”
(zero) calibrated on timing belt cover.
Special Tool
(A): 09919-16020
5) See if the rocker arms of No.1 cylinder are off the respective cam
lobes (of camshaft); if so, valves (1), (2), (5) and (7) in figure are
ready for clearance checking and adjustment. Check valve
lashes at valves (1), (2), (5) and (7).
If the rocker arms of No.4 cylinder are off the respective cam
lobes, check valve lashes at valves (3), (4), (6) and (8).
NOTE:
When checking valve clearance, insert thickness gauge be-
tween camshaft and cam-riding face of rocker arm.

1. Thickness gauge IN
EX
360
IN
EX
6A1-10 ENGINE MECHANICAL (G13B, 1-CAM 16-VALVES ENGINE)
6) If valve lash is out of specification, adjust it to specification by
turning adjusting screw after loosening lock nut.
After adjustment, tighten lock nut to specified torque while hold-
ing adjusting screw stationary, and then make sure again that
valve lash is within specification.
Valve
clearance
When cold
(Coolant tempera-
ture is 15 – 25C
or 59 – 77F)When hot
(Coolant tempera-
ture is 60 – 68C
or 140 – 154F)
specifica-
tionIntake0.13 – 0.17 mm
(0.005 – 0.007 in.)0.18 – 0.22 mm
(0.007 – 0.009 in.)
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, 9.0 lb-ft)
7) After checking and adjusting valve lashes at valves (1), (2), (5)
and (7), (or (3), (4), (6) and (8)) rotate crankshaft exactly one full
turn (360) and check the same at valves (3), (4), (6) and (8) (or
(1), (2), (5) and (7)). Adjust them as necessary.
8) After checking and adjusting all valves, reverse removal proce-
dure for installation.

1.“V” mark on cylinder
head cover
2. Timing mark by “E” on
camshaft timing belt pulley
3. Arrow mark on oil
pump case
4. Punch mark on crankshaft
timing belt pulley
4. Tensioner stud
6. Damper
6
6A1-20 ENGINE MECHANICAL (G13B, 1-CAM 16-VALVES ENGINE)
8) Lock crankshaft inserting flat end rod or the like (2) between fly-
wheel ring gear and transmission case, after removing clutch
housing (torque converter housing for A / T) lower plate.
With crankshaft locked, remove crankshaft timing belt pulley
bolt (3).
9) Remove crankshaft pulley bolts (1).
10) Remove crankshaft pulley (4).
11) Install crankshaft timing belt pulley bolt temporarily to turn
crankshaft.
12) Release harness clamps.
13) Remove timing belt outside cover.
14) For installation of timing belt, align 4 timing marks as shown in
figure by turning crankshaft.
15) Remove timing belt tensioner (3), tensioner plate (2), tensioner
spring (5) and timing belt (1).

1. Camshaft allowable turning range - - - By timing mark,
within 90 from “V” mark on head cover on both right
and left.
2. Crankshaft allowable turning range - - - By punch mark,
within 90 from arrow mark on oil pump case on both
right and left.
ENGINE MECHANICAL (G13B, 1-CAM 16-VALVES ENGINE) 6A1-21
CAUTION:

After timing belt is removed, never turn camshaft and
crankshaft independently more than such an extent as
shown in figure. If turned, interference may occur among
piston and valves, and parts related to piston and valves
may be damaged.

Never bend timing belt.
INSPECTION

Inspect timing belt for wear or crack.
Replace it as necessary.

Inspect tensioner for smooth rotation.
INSTALLATION
1) Install tensioner plate to tensioner.
Insert lug (1) of tensioner plate into hole (2) in tensioner.

4. Damper
6A1-22 ENGINE MECHANICAL (G13B, 1-CAM 16-VALVES ENGINE)
2) Install tensioner (2) and tensioner plate (3):
Do not tighten tensioner bolt (1) with wrench yet. Hand tighten
only at this time.
Check to ensure that plate movement in arrow direction as
shown in figure causes tensioner to move in the same direction.
If no associated movement between plate and tensioner occurs,
remove tensioner and plate again and reinsert plate lug into ten-
sioner hole.
3) Check that timing mark (2) on camshaft timing belt pulley is
aligned with “V” mark (1) on cylinder head cover. 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 timing mark (2) on crankshaft timing belt pulley is
aligned with arrow mark (1) 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) Install timing belt and tensioner spring (2).
With two sets of marks aligned and tensioner plate pushed up,
install timing belt on two pulleys in such a way that drive side (1)
of belt is free from any slack.
And then install tensioner spring as shown in figure, and hand-
tighten tensioner stud (3).
NOTE:

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

In this state, No. 4 piston is at top dead center of compres-
sion stroke.

1. Clamp
1. Long bolt
2. Short bolt
ENGINE MECHANICAL (G13B, 1-CAM 16-VALVES ENGINE) 6A1-23
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 first and then tensioner bolt
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): 25 N
.m (2.5 kg-m, 18.0 lb-ft)
7) Install timing belt outside cover.
Before installing, make sure that seal is between water pump
and oil pump case.
Tightening Torque
(a): 11 N
.m (1.1 kg-m, 8.0 lb-ft)
8) With crankshaft locked, remove crankshaft timing belt pulley
bolt (4).
9) Install crankshaft pulley (2).
Fit hole of pulley to pin (1) on crankshaft timing belt pulley, and
tighten pulley bolts (3) to specified torque.
Tightening Torque
(a): 16 N
.m (1.6 kg-m, 11.5 lb-ft)
10) With crankshaft locked using flat end rod or the like, tighten
crankshaft timing belt pulley bolt (4).
Tightening Torque
(b): 130 N
.m (13.0 kg-m, 94.0 lb-ft)
11) Clamp harness securely.

1. Rotor plate
2. Inner rotor:
Apply thin coat of engine oil.
3. Outer rotor:
Apply thin coat of engine oil.
4. Gasket
5. Pin
6. Pin
7. Relief valve:
Apply thin coat of engine oil.
8. Spring
9. Retainer
10. Retainer ring
11. Front oil seal:
Apply engine oil to contact
part of crankshaft with oil seal lip.
12. Plate screw
13. Bolt (short)
14. Bolt (long)
: Tightening Torque
: Do not reuse
6A1-28 ENGINE MECHANICAL (G13B, 1-CAM 16-VALVES ENGINE)
OIL PUMP
REMOVAL
1) Disconnect negative cable at battery.
2) Remove timing belt as previously outlined.
3) Remove generator and its bracket.
NOTE:
When installing bracket, fasten nut (A) first.
4) Remove power steering pump bracket or A / C compressor
bracket, if equipped.
NOTE:
When installing bracket, fasten bolt (B) first.
5) Remove oil pan and oil pump strainer as previously outlined.
6) Remove crankshaft timing belt pulley (3).
Lock crankshaft inserting flat end rod or the like (1) between fly-
wheel ring gear and transmission case.
With crankshaft locked, remove crankshaft timing belt pulley
bolt (2).

(a)
1. Oil pump
1. No. 1 bolts (short)
2. No. 2 bolts (long)
ENGINE MECHANICAL (G13B, 1-CAM 16-VALVES ENGINE) 6A1-31
4) Install rotor plate. Tighten 5 screw securely.
After installing plate, check to be sure that gears turn smoothly
by hand.
Tightening Torque
(a): 11 N
.m (1.1 kg-m, 8.0 lb-ft)
5) Apply engine oil to guide seal (3) and install guide seal and guide
(2).
INSTALLATION
1) Install two oil pump pins and oil pump gasket to cylinder block.
Use a new gasket.
2) To prevent oil seal lip from being damaged or upturned when
installing oil pump to crankshaft, fit special tool (Oil seal guide)
to crankshaft, and apply engine oil to special tool.
Special Tool
(A): 09926-18210
3) Install oil pump to cylinder block.
As there are 2 types of oil pump bolts, refer to figure for their cor-
rect use and tighten them to specified torque.
Tightening Torque
(a): 11 N
.m (1.1 kg-m, 8.0 lb-ft)
4) Install rubber seal between oil pump and water pump.