Engine - Engine and crankcase
Engine - General specification
Engine Model
S3L , S3L2
Type
Water cooled, 4-stroke cycle diesel
No. of cylinders
3
Combustion type
Swirl chamber
Valve mechanism
Overhead valve type
Cylinder bore x stroke
78 mm
x
92 mm
(
3.07 in
x
3.62 in
)
Total displacement
1.3 l
(
79 in³
)
Compression ratio
22:1
Fuel used
JIS K2204, Diesel fuel or its equivalent (ASTM diesel fuel oil
No. 2-D)
Firing order
1 - 3 - 2
Direction of rotation
Counterclockwise as viewed from flywheel side
Length
512 mm
(
20.2 in
)
Width
453 mm
(
17.8 in
)
Height
563 mm
(
22.2 in
)
Dry weight
Approximately
140 kg
(
309 lb
)
Inspection point
Nominal
Standard
Limit
Remark
Maximum rotation speed
(rated rotation speed used as
reference)
Varies depending on specification of
destination
Minimum rotation speed
Varies depending on specification of
destination
Compression ratio @
290 RPM
29 bar
(
421 psi
) or above
26 bar
(
377 psi
)
or less
When oil and water
temperatures at
20 - 30 °C
(
68 - 86 °F
)
Valve timing
Intake
- Open
BTDC
15 °
- Close
ABDC
41 °
Exhaust
- Open
BBDC
54 °
- Close
ATDC
10 °
With
2 mm
(
0.079 in
) clearance
on valve side, when cold.
Values are only for checking
valve timing and are different
from the actual ones.
Rocker arm
Rocker arm inside diameter
18.9 mm
(
0.744 in
)
18.910 - 18.930 mm
(
0.7445 - 0.7453 in
)
Rocker shaft outside diameter
18.9 mm
(
0.744 in
)
18.880 - 18.930 mm
(
0.7433 - 0.7453 in
)
Clearance between rocker arm
and rocker shaft (oil clearance)
0.012 - 0.050 mm
(
0.0005 - 0.0020 in
)
0.200
mm
(
0.00
79 in
)
Replace rocker arm
Valve
Valve stem outside diameter
- Intake
6.6 mm
(
0.260 in
)
6.565 - 6.580 mm
(
0.2585 - 0.2591 in
)
6.500
mm
(
0.25
59 in
)
- Exhaust
6.6 mm
(
0.260 in
)
6.530 - 6.550 mm
(
0.2571 - 0.2579 in
)
6.500
mm
(
0.25
59 in
)
Valve guide inside diameter
- Intake
6.6 mm
(
0.260 in
)
6.600 - 6.615 mm
(
0.2598 - 0.2604 in
)
- Exhaust
6.6 mm
(
0.260 in
)
6.600 - 6.615 mm
(
0.2598 - 0.2604 in
)
Clearance between valve
guide and valve stem
47827505 04/01/2016
10.1 [10.001] / 3
Summary of Contents for Boomer 24 Tier 4B
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