Scania OC16, DC16, DC13, DC09 Service Manual

01:01 Issue 8.0 en-GB

© Scania CV AB 2016, Sweden

Installation manual

Engine

Industrial engines

DC09, DC13, DC16

OC16

333 291

INSTALLATION
MANUAL

© Scania CV AB 2016, Sweden

01:01 Issue 8.0 en-GB 2

Engine suspension....................................................................................................3

Design requirements............................................................................................ 3

Flexible engine suspension.................................................................................. 4

Rigid engine suspension...................................................................................... 5

Permissible installation and operating angles ..................................................... 6

Flywheel housings............................................................................................... 7

Generator set dynamics ....................................................................................... 8

Lifting the engine ................................................................................................ 8

Accessibility for maintenance and repairs ............................................................9

Installation requirements ..................................................................................... 9

Clearances ......................................................................................................... 11

Engine alignment...................................................................................................12

Flexible coupling............................................................................................... 12

Aligning engine and shafts................................................................................ 13

Power transmission ...............................................................................................18

Flexible coupling............................................................................................... 18

Friction clutch ................................................................................................... 18

Transmission types ................................................................................................ 20

Mechanical transmissions ................................................................................. 20

Belt transmissions ............................................................................................. 20

Power take-offs ......................................................................................................22

Front-mounted power take-offs......................................................................... 22

Side-mounted power take-offs .......................................................................... 25

Air compressor ......................................................................................................31

Torsional oscillations.............................................................................................32

Data for torsional oscillation calculation .......................................................... 33

Torsional oscillation calculations from Scania................................................. 34

General tightening torques for screw joints ....................................................... 35

Specification of normal tightening torques....................................................... 35

Tightening torques ............................................................................................ 36

Sticker “Powered by Scania”............................................................................... 39

INSTALLATION
MANUAL

© Scania CV AB 2016, Sweden

Engine suspension

01:01 Issue 8.0 en-GB 3

Engine suspension

Design requirements

The type of engine suspension that is appropriate varies for different engine installa­tions. In general, the following applies:

• The engine suspension should be designed for the forces it is exposed to, both
continuously and momentarily during operation. Such forces are reaction forces
from the transmitted torque and in some cases longitudinal acceleration, retarda­tion and reaction forces in the engine.

• Both the engine suspension and the engine bed should be designed so that there
are no resonant oscillations within the engine speed range. They should also be
designed so that annoying vibrations from the engine are not transmitted to the
surroundings.

• The engine bed location and the engine suspension must be designed so that the
permissible angles of inclination for the engine are not exceeded. See the table in
the Permissible installation and operating angles

section.

• The engine suspension and engine bed should be designed in a way which allows
access for maintenance and repairs.

IMPORTANT!

If the angles of inclination are exceeded, lubrication system performance will deteri­orate, which can cause damage to the engine or reduce its service life.

There are two standard engine suspension designs:

• flexible engine suspension

• rigid engine suspension.

INSTALLATION
MANUAL

© Scania CV AB 2016, Sweden

Engine suspension

01:01 Issue 8.0 en-GB 4

Flexible engine suspension

Flexible engine suspension dampens vibrations more effectively than rigid engine
suspension. Flexible engine suspension does not require such careful alignment of
the engine as rigid engine suspension. However, flexible engine suspension does not
absorb longitudinal and lateral forces in the engine to the same extent as rigid engine
suspension.

Insulators

Cushyfloat insulators with hardness 55 or 65 Shore are delivered as standard.

Tightening torque. Hardness marking.

The engine bracket and frame or engine bed should be

parallel.

The vertical centre lines should coincide laterally. The upper and lower parts of the insulators should be

parallel longitudinally.

334 280

Examples of flexible engine suspension.

310 404

160±10 Nm

310 405

55

55

alt. 65

310 407

max 1°

310 408

0°

310 406

0°

55

INSTALLATION
MANUAL

© Scania CV AB 2016, Sweden

Engine suspension

01:01 Issue 8.0 en-GB 5

Rigid engine suspension

A rigid engine suspension can absorb greater forces in all directions than flexible en­gine suspension. It requires highly accurate alignment of the engine in relation to the
driven unit. On the other hand, it requires no special flexibility in the hoses, pipes and
controls connected to the engine.

A rigid engine suspension can be used in engine installations where vibration causes
no significant problems and where other characteristics make it desirable.

Even with a rigid engine suspension, the transmission of vibration to the engine bed
can be kept low if the masses of the engine bed and connected parts are large in re­lation to the mass of the engine.

It is also possible to construct flexible engine suspension between the frame and the
engine bed to reduce the transmission of vibration to the engine bed.

344 281

Examples of rigid engine suspension.

INSTALLATION
MANUAL

© Scania CV AB 2016, Sweden

Engine suspension

01:01 Issue 8.0 en-GB 6

Permissible installation and operating angles

Maximum installation angle means maximum permissible installation angle for an
engine relative to the horizontal plane. The angle indicates the limit for engine incli­nation during continuous operation.

Maximum operating angle means maximum permissible angle of inclination for an
engine in operation and with minimum oil level. The angle may only be used for
short periods. The given maximum forward or rearward operating angles are not ap­plicable to their full extent if the engine is inclined laterally at the same time.

Engine type Type of oil sump Max. installation angle Max. operating angle Oil capacity (litres)

Inclination rear­wards and for­wards

Inclination lat­erally

Inclination rear­wards and for­wards

Inclination lat­erally

Min. Max.

DC09 Deep front without ladder frame 12° 12° 30° 30° 31 36

DC09 Low 12° 12° 25° 30° 28 35

DC13 Deep front without ladder frame 12° 12° 30° 30° 30 36

DC13 Deep front with ladder frame 12° 12° 30° 30° 39 45

DC13 Low 12° 12° 25° 30° 28 34

DC13 With deep centre part 12° 12° 35° 45° 33 39

DC16, OC16 Deep front without ladder frame 12° 10° 25° 30° 40 48

DC16 Low 12° 10° 25° 30° 29 37

INSTALLATION
MANUAL

© Scania CV AB 2016, Sweden

Engine suspension

01:01 Issue 8.0 en-GB 7

Flywheel housings

Silumin housings are supplied as standard on all industrial engines. The maximum
permissible bending torque for a silumin housing is 10,000 Nm. This presumes that
there are no axial loads from, for example, the propeller shaft, abnormal G forces or
vibration.

For certain engine types, it is also possible to select a nodular iron flywheel housing.
Nodular iron housings can dampen vibrations at certain engine speeds but increase
vibrations at other engine speeds. Nodular iron is stronger than silumin and can there­fore tolerate greater bending and torsional forces.

The stronger nodular iron housings are recommended in installations where transport
causes serious stress on the flywheel housing, such as in dumper type trucks and gen­erator sets with high outputs.

If it is difficult to determine the size and nature of the load, contact your nearest Sca­nia distributor.

INSTALLATION
MANUAL

© Scania CV AB 2016, Sweden

Engine suspension

01:01 Issue 8.0 en-GB 8

Generator set dynamics

If vibration levels in a generator set are too high, it could be due to resonance. This
may be because resonant frequencies of the receiving system are the same as the fre­quency of the torque and disrupting power pulses that arise during normal operation
of combustion engines with a crankshaft. The resonant frequencies of the system de­pend in turn on the mass and rigidity of component parts.

It is the responsibility of the installer to check that no resonant frequencies or vibra­tion levels that could damage component parts are found anywhere in the engine in­stallation.

The measurement and evaluation of vibrations in static parts is described in interna­tional standards. See ISO 8528-9.

Lifting the engine

WARNING!

The engine lifting eyes are dimensioned for lifting the engine only, not the engine to­gether with connected equipment or frame!

5

4

3

2

1

6

6

344 282

Example of generator set.

1. Engine.

2. Flywheel housing.

3. Adapter.

4. Generator.

5. Engine bed.

6. Vibration insulators.

INSTALLATION
MANUAL

© Scania CV AB 2016, Sweden

Accessibility for maintenance and repairs

01:01 Issue 8.0 en-GB 9

Accessibility for maintenance and repairs

Installation requirements

The installer is responsible for ensuring accessibility for maintenance and repairs.

Note:

There must be sufficient space at installation so that standard times for maintenance
and repairs can be attained.

The following requirements for accessibility must be met:

• Canopies and connected components must be designed so that the engine can be
removed and fitted relatively easily.

• In the case of static engine installations, there should be permanent securing
points for lifting devices above the unit.

• The fuel system must be easily accessible for maintenance and bleeding.

• It should be possible to read the graduations on the flywheel when adjusting
valves and unit injectors.

• It should be possible to remove and fit the cylinder head, rocker covers and push­rods while leaving the engine in place.

• It must be possible to remove the oil sump in order to renew cylinder liners or pis­tons with the engine in place.

INSTALLATION
MANUAL

© Scania CV AB 2016, Sweden

Accessibility for maintenance and repairs

01:01 Issue 8.0 en-GB 10

• It should be easy to fill and drain oil. In addition, the oil dipstick must be easily
accessible.

• Centrifugal oil cleaners and oil filters must be easy to access for maintenance and
for renewal.

• It should be easy to fill and drain coolant.

• Engine air filters must be located so that they are easy to access for the renewal
of filter elements.

It must also be easy to carry out maintenance on the following components:

• Turbocharger

• Starter motor

• Alternator

• Coolant pump

• Radiator

• Cooling fan

• Clutch

• Batteries

• Crankcase ventilation filter

For gas engines, it must also be easy to carry out maintenance on the following com­ponents:

• Spark plug

•Flame arrestor

• Gas mixer insert

• Electric throttles

• Gas regulator

• Lambda sensor

INSTALLATION
MANUAL

© Scania CV AB 2016, Sweden

Accessibility for maintenance and repairs

01:01 Issue 8.0 en-GB 11

Clearances

The most important clearances are shown in the table and illustrations. The specified
measurements apply to the largest standard equipment.

Meas
ure­ment

Clearance in mm For maintenance or renewal of

DC09 DC13 DC16 OC16

A 150 150 150 380 cylinder liner, cylinder head, etc.

B 250 260 260 260 oil sump

1

1. If the oil sump has a special design, these values do not apply.

F 400 400 400 500 various units

F

B

F

A

F

344 285

Clearances for DC09 and DC13.

F

A

A

B

F

F

F

344 286

Clearances for DC16 and OC16.

INSTALLATION
MANUAL

© Scania CV AB 2016, Sweden

Engine alignment

01:01 Issue 8.0 en-GB 12

Engine alignment

The alignment of the engine in relation to the driven unit is very important in order
to prevent malfunctions. Otherwise there is a risk of vibration and serious stress to
the crankshaft, engine brackets, drive shaft and coupling, causing damage which is
costly to repair.

Alignment should be checked regularly on certain vibration-sensitive engine instal­lations. Adjust engine alignment with shims between the engine bed and the engine
suspension.

Flexible coupling

The alignment requirements are reduced if a flexible coupling is installed between
the engine and the driven unit. Refer to the data on the flexible coupling concerned
for permissible deviations.

Flexible coupling allows a certain angular displacement towards the output shaft. It
also has an effect of evening out irregularities in torque and therefore counteracts the
tendency towards torsional oscillation. The correct choice of rubber hardness reduces
the stress on the driven units.

Relatively large deviations are permissible with flexible couplings. However, align­ment should be as accurate as possible to achieve low vibration and a long service
life on the coupling.

INSTALLATION
MANUAL

© Scania CV AB 2016, Sweden

Engine alignment

01:01 Issue 8.0 en-GB 13

Aligning engine and shafts

Start from the driven shaft when aligning. First check that this is straight. Alignment
is made easier if the engine brackets are equipped with adjusting screws for vertical
and lateral adjustment. However, permanent setting should be made using shims.

Adjust the engine alignment vertically using shims between the engine bed and en­gine suspension and laterally by moving the engine sideways on the surface. Shafts
with flanges: Start by aligning roughly and secure the engine to its engine bed. Mate
the flanges (1) so that the guide edge of one flange enters the guide hole of the other
flange.

Calculation of angular deviation

1. Fit the stand for the dial gauge (2) to the driving flange.

2. Align the tip of the dial gauge with the axial surface of the other flange as far as

possible.

3. Zero the dial gauge at 12:00

4. Place one of the retaining screws through both flanges without tightening it.

5. Turn the shafts at the same time and read the dial gauge at intervals of 90° while

turning one revolution. Enter the values in the table. Make sure you use the right
signs.

6. Calculate the angular deviation between the shafts using the values.

Location of measurement point Measurement value

1

1. + means inwards and - means outwards

12:00 ±0 mm

3:00 ± mm

6:00 ± mm

9:00 ± mm

2

1

344 283

Measuring angular deviation.

INSTALLATION
MANUAL

© Scania CV AB 2016, Sweden

Engine alignment

01:01 Issue 8.0 en-GB 14

Calculating thickness of required shims

Note:

Make sure you use the right signs in the calculations.

• If t is positive, shims should be added to the front or removed from the rear.

• If t is negative, shims should be added to the rear or removed from the front.

t = thickness of required shims.

L = distance between engine suspensions.

D = diameter of the flange where the dial gauge is mounted.

t =

6 x L

D

INSTALLATION
MANUAL

© Scania CV AB 2016, Sweden

Engine alignment

01:01 Issue 8.0 en-GB 15

Calculating lateral adjustment

Note:

Make sure you use the right signs in the calculations.

• If s is positive, the front engine suspension must be moved to the right.

• If s is negative, the front engine suspension must be moved to the left.

Checking parallelism of the flanges with a feeler gauge

Angular deviation between the shaft centrelines can also be checked using a 0.1 mm
feeler gauge. Do this by measuring the distance between the surfaces of the flanges
at the outer edges.

During measurement, the engine must be tightened onto the engine bed.

s = lateral displacement of engine suspension.

L = distance between engine suspensions.

D = diameter of the flange where the dial gauge is mounted.

s =

(3 o'clock - 9
o'clock) x L

D

344 284

INSTALLATION
MANUAL

© Scania CV AB 2016, Sweden

Engine alignment

01:01 Issue 8.0 en-GB 16

Measuring parallel displacement

1. Move the tip of the dial gauge to the radial surface of the flange. Pull apart the

flanges (1) so that the guide edge is released as depicted in the figure to the right.

2. Zero the dial gauge (2) at 12:00

3. Lift or press down the driven shaft as far as the radial clearance will allow. Read

the dial gauge and enter the reading with the correct sign on the radial clearance
line.

If the driven shaft is very long, there must also be compensation for bending of
the shaft from its own weight. This can be obtained by lifting the end of the shaft
using a spring balance, which then shows the weight of the flange and half the
free part of the shaft. Deflection can then be calculated using this weight.

The same must also be done if the drive shaft is long or has some play.

4. Zero the dial gauge again. Place one of the retaining screws through both flanges

without tightening it.

5. Turn the shafts at the same time, read the dial gauge at intervals of 90° while turn-

ing one revolution and enter the values in the table. Make sure you use the right
signs.

6. Calculate the parallel displacement between the shafts using these values.

Location of measure­ment point

Measurement value

1

1. + means inwards and - means outwards

12:00 ±0 mm

3:00 ± mm

6:00 ± mm

9:00 ± mm

Radial clearance

2

2. + means lift and - means press

±mm

2

1

344 287

Measuring centring.

INSTALLATION
MANUAL

© Scania CV AB 2016, Sweden

Engine alignment

01:01 Issue 8.0 en-GB 17

Calculating parallel displacement

Note:

Make sure you use the right signs.

Shafts without flange

If both shaft ends are free during alignment, alignment can be checked using a dial
gauge (2) set up as depicted in the figure. Readings should be taken with the tip of
the dial gauge in two different places at least 200 mm apart axially. Turn the shafts
at the same time and read the results on the dial gauge.

Permissible deviations

After taking measurements, a final check should be made. All screws, except those
for the flange joint, should be tightened to the torque specified by the manufacturer.
Upon measurement, deviation should not exceed 0.1 mm.

The requirements for the accuracy of the alignment can vary depending on the design
of the engine installation. If the requirements for accuracy are lower, the permissible
deviation may be greater than indicated above.

Vertical Lateral

t =

6 o'clock + clear-

ance

t =

3 o'clock + 9

o'clock

22

2

344 288

Measuring with free shaft ends.

INSTALLATION
MANUAL

© Scania CV AB 2016, Sweden

Power transmission

01:01 Issue 8.0 en-GB 18

Power transmission

Engine torque is normally transmitted to the driven unit in one of the following ways:

• Through a flexible coupling which cannot be disengaged, e.g. engines for gener­ator sets.

• Through a friction coupling, possibly also used together with a flexible coupling,
and via a reduction gear, torque converter or belt transmission.

Flexible coupling

Many engine installations require a flexible coupling between the engine and the
driven unit to dampen irregularities in the system. Information about suitable flexible
couplings can be obtained from your nearest Scania distributor or from the coupling
supplier.

Carry out a torsional oscillation calculation before selecting a flexible coupling.
When a flexible coupling is recommended based on the torsional oscillation calcula­tion, it is important that the installed coupling and other transmission equipment fol­low the precise specification of the calculation.

For operation with generator set, there must be no play in the flexible coupling be­tween the engine and generator.

Note:

For gas engines in generator operation, a single-bearing generator with a friction
clutch should be installed so that the engine control unit is capable of detecting mis­firing. If a flexible coupling is required in the installation, misfire detection must be
deactivated in SDP3.

Friction clutch

Industrial installations use two types of friction clutches, a vehicle clutch and an in­dustrial clutch. The industrial clutch has a greater capacity, i.e. it can transfer greater

INSTALLATION
MANUAL

© Scania CV AB 2016, Sweden

Power transmission

01:01 Issue 8.0 en-GB 19

torque than the vehicle clutch. There are many different makes of industrial clutches
on the market. It is important that the industrial clutch is not subjected to loads that
could cause overloading of the clutch bearings. Vehicle clutches are used together
with conventional multi-ratio gearboxes, where the transmission can be disengaged.

Single-bearing clutches may not be subjected to large lateral forces and are therefore
most often used in engine installations where torque is transmitted straight to the rear
via a propeller shaft or similar power transmission. For heavier operation where large
lateral forces arise, such as belt transmissions, Scania recommends using clutches
which absorb lateral forces in the main bearings. This type of clutch does not have a
support bearing in the flywheel.

It is also important that a remote-controlled clutch has no remaining pressure on the
release bearing, neither when engaged nor disengaged, since the release bearing is
then subject to rapid wear. For this type of clutch operation, we recommend the use
of ball bearings as release bearings.

See the illustration in the Belt transmission in multi-engine installations

section for

how a belt transmission should be set up in a multi-engine installation.

If the engine installation has a clutch other than a friction type, e.g. hydrodynamic
(wet) clutch, the necessary installation instructions can be obtained from the clutch
supplier.

Note:

The crankshaft should not be subjected to axial pressure from the clutch. Check this
after fitting.

INSTALLATION
MANUAL

© Scania CV AB 2016, Sweden

Transmission types

01:01 Issue 8.0 en-GB 20

Transmission types

Mechanical transmissions

Mechanical transmissions are the most common type on single engine installations.
These may be multi-ratio gearboxes or reduction gears.

If an engine is supplied without a gear or gearbox, affected parts of the engine (fly­wheel, flywheel housings etc.) can still be adapted so that the gears and torque con­verters available on the market can be fitted.

For certain gears and torque converters, there are requirements to ensure that the ax­ial run-out and radial run-out are not too great. Therefore check at installation to en­sure that the supplier's requirements are met.

Belt transmissions

Belt transmissions are appropriate in, for instance, multi-engine installations where
two or more engines drive a common output shaft. One of the advantages of a belt
transmission is that it is easy to adapt to the appropriate gear ratio.

The belt transmission functions to some extent as a flexible coupling, runs silently
and has a long service life. Apart from checking belt tension and alignment, belt
transmissions do not require any special maintenance.

There are belt transmissions with different types of belts, such as single V-belts and
devices consisting of two or more V-belts coupled together.

Which belt type to choose depends on several factors. More information and help in
dimensioning a belt transmission can be obtained from the belt manufacturer.

Large lateral forces may arise during belt operation. Accurate alignment and check­ing of the belt tension are therefore necessary. A different belt tension results in in­creased bearing load and displacement of the centre of the load. The lateral loading
can be reduced by e.g. changing the size of the pulley.

INSTALLATION
MANUAL

© Scania CV AB 2016, Sweden

Transmission types

01:01 Issue 8.0 en-GB 21

If there are large lateral forces on a pulley which is directly connected to an industrial
clutch, the pulley must be seated on both sides in separate bearing brackets.

The manufacturer can provide information about permissible lateral forces and belt
tensioning for belt transmission in each case.

Belt transmission in multi-engine installations

In multi-engine installations with a belt transmission, the alignment of the engine and
bearings on the frame should be checked after the installation is complete.

In addition, you should also check that the pulley is properly secured to the shaft so
that it cannot wander after start-up.

Shafts A and B should be sufficiently parallel that their centrelines fall within a circle
with a diameter of 0.8 mm. See the illustration.

Check that the support bearings have sufficient lubricant as per the manufacturer's
instructions. There are both oil and grease lubricated bearings.

IMPORTANT!

Always use paired belts or V-belts in multi-belt installations.

AB

Ø0.8

12 134 5

332 917

Example of engine in multi-engine installation with belt drive.

A = Bearing shaft.
B = Engine shaft.

1. Steel bearing housing.

2. Pulley with belts.

3. Universal joint or flexible coupling.

4. Flexible coupling.

5. Industrial clutch.

INSTALLATION
MANUAL

© Scania CV AB 2016, Sweden

Power take-offs

01:01 Issue 8.0 en-GB 22

Power take-offs

The engines can be supplied with different types of power take-offs for driving units.

Note:

Only components from Scania are permitted in the belt transmission.

Front-mounted power take-offs

Example of shaft journal for direct connection of flexible coupling.

Example of pulley on crankshaft.

Example of shaft journal and pulley.

344 289

344 290

344 291

INSTALLATION
MANUAL

© Scania CV AB 2016, Sweden

Power take-offs

01:01 Issue 8.0 en-GB 23

Connection of flexible coupling to front end of crankshaft

The engine must be equipped with a shaft journal or flange driver which is mounted
on the crankshaft hub so that a flexible coupling (Centa A type, size 30 or 50) can be
connected at the front end of the crankshaft.

The transmissible torque and power in the case of direct connection to the front end
of the crankshaft are limited primarily by engine type and the type of joint between
the crankshaft and hub.

Crankshaft pulley with two or more belt grooves

In order to fit this type of pulley, the cooling fan must be moved forwards.

The belt grooves are designed for 12.5 mm (0.5") narrow V-belts, but A section V­belts can also be used.

The transmission capacity of the V-belts determines the power available. Therefore
it is important that the belt manufacturer's instructions are adhered to when calculat­ing transmissible power.

As when connecting a flexible coupling or industrial clutch to the front end of the
crankshaft, transmissible torque and power between the crankshaft and pulley are
limited by engine type and the type of joint as shown in the following tables.

In order to avoid impermissible radial forces at the front end of the crankshaft when
there are many belts in the transmission, the driven units should be positioned so that
the forces balance each other out.

344 292

INSTALLATION
MANUAL

© Scania CV AB 2016, Sweden

Power take-offs

01:01 Issue 8.0 en-GB 24

Torque take-off and transmissible power from the front end of the
crankshaft

The tables below show the maximum torque take-off and transmissible power at dif­ferent engine speeds.

Note:

With the Centa A coupling size 30, torque take-off is limited to max. 400 Nm.

Max torque take offs for screw joints (Nm)

DC09 DC13 DC16

800 1,200 800

Engine speed (rpm) Transmissible power

DC09, DC16 DC13

1,500 125 kW 188 kW

1,800 151 kW 226 kW

1,900 160 kW 239 kW

2,000 168 kW 251 kW

2,100 176 kW 264 kW

INSTALLATION
MANUAL

© Scania CV AB 2016, Sweden

Power take-offs

01:01 Issue 8.0 en-GB 25

Side-mounted power take-offs

The maximum torque that can be taken off from units connected to power take-offs
is indicated on the following pages.

The specified maximum torque assumes that the driven units have a relatively even
drive torque, e.g. generators or vane pumps.

IMPORTANT!

In the case of units which have highly pulsed torque, e.g. piston pumps or piston
compressors with one or two cylinders, the permissible torque must be reduced. The
torque reduction is needed so that the average torque does not exceed the permissible
torque for continuous operation and the peak torque does not exceed the maximum
torque for intermittent operation.

When reducing permissible torque, consideration should be given to the torque re­ductions specified by the manufacturer of belts and flexible couplings.

Also assess whether connected units may have an effect on the crankshaft and cause
torsional oscillations in the shaft system.

IMPORTANT!

Side-mounted power take-offs facing rearwards are not designed for driving without
a load. If these power take-offs are not loaded, they must be removed. Otherwise,
parts from the bearing housing may get into the engine and cause a breakdown.

Scania also recommends that SAE B power take-offs facing forwards are removed if
they are not to be loaded.

INSTALLATION
MANUAL

© Scania CV AB 2016, Sweden

Power take-offs

01:01 Issue 8.0 en-GB 26

Note:

If several different side-mounted power take-offs are used, the maximum permitted
total torque take-off is 600 Nm.

Note:

The maximum permissible bending torque for all side-mounted power take-offs with
SAE B connection is 30 Nm. This applies to all engine types.

Overview of side-mounted power take-offs for DC09 and DC13

Transmissible power

Power take-offs Direction Connection Rotation Max. torque take-off Gear ratio

1 Backwards SAE B 300 Nm 1:1.19

2 Forward SAE B 300 Nm 1:1.19

3 Backwards SAE A 100 Nm 1:1.71

Engine speed (rpm) Power take-off 1 Power take-off 2 Power take-off 3

1,200 45 kW 45 kW 21 kW

1,500 56 kW 56 kW 27 kW

1,800 67 kW 67 kW 32 kW

1,900 71 kW 71 kW 34 kW

2,000 71 kW 71 kW 34 kW

2,100 71 kW 71 kW 34 kW

2,200 71 kW 71 kW 34 kW

INSTALLATION
MANUAL

© Scania CV AB 2016, Sweden

Power take-offs

01:01 Issue 8.0 en-GB 27

Overview of side-mounted power take-offs for DC16 and OC16

Power take-off 2 cannot be chosen for OC16.

Transmissible power

Power take-offs Direction Connection Rotation Max torque take-off Gear ratio

1 Backwards SAE B 300 Nm 1:1.19

2 Backwards SAE C 600 Nm 1:1.19

Engine speed (rpm) Power take-off 1 Power take-off 2

1,200 45 kW 90 kW

1,500 56 kW 112 kW

1,800 67 kW 134 kW

1,900 71 kW 142 kW

2,000 71 kW 142 kW

2,100 71 kW 142 kW

2,200 71 kW 142 kW

INSTALLATION
MANUAL

© Scania CV AB 2016, Sweden

Power take-offs

01:01 Issue 8.0 en-GB 28

DC09 and DC13

Power take-off 1

The power take-off is located on the right of the rear of the engine.

Power take-off 2

The power take-off is located low on the right of the rear of the engine, facing for­ward.

361 904

361 905

INSTALLATION
MANUAL

© Scania CV AB 2016, Sweden

Power take-offs

01:01 Issue 8.0 en-GB 29

Power take-off 3

The power take-off is located on the left of the rear of the engine.

Hydraulic pump

A standard hydraulic pump can also be fitted in the same location as power take-off
3, i.e. on the left of the rear of the engine.

This hydraulic pump does not have an integrated pressure limiting valve. Such a
valve must therefore be installed in the system.

Note:

When the hydraulic pump is installed, the tank must be positioned higher than the hy­draulic pump for the pump to have an even flow.

Max 100 Nm

332 915

344 294

INSTALLATION
MANUAL

© Scania CV AB 2016, Sweden

Power take-offs

01:01 Issue 8.0 en-GB 30

DC16, OC16

Power take-offs 1 and 2

Both power take-offs are located on the right of the rear of the engine.

Power take-off 2 cannot be chosen for OC16.

Hydraulic pump

On DC engines, a standard hydraulic pump can be fitted on the front right-hand side
of the engine. The hydraulic pump is driven by the transmission via gears and the
gear ratio is 1:1.75.

This hydraulic pump does not have an integrated pressure limiting valve. Such a
valve must therefore be installed in the system.

Note:

When the hydraulic pump is installed, the tank must be positioned higher than the hy­draulic pump for the pump to have an even flow.

361 906

344 296

INSTALLATION
MANUAL

© Scania CV AB 2016, Sweden

Air compressor

01:01 Issue 8.0 en-GB 31

Air compressor

An engine can be equipped with an air compressor, e.g. for a vehicle with air brakes.
The air compressor is delivered fitted on the engine and is driven by the engine tim­ing gear.

The installer acquires and is responsible for equipment connected to the air compres­sor.

Air to the air compressor should be taken from the engine air filter. A safety valve is
fitted on the air compressor outlet. The safety valve opening pressure is 19 bar. The
air compressor has a fuel economy function that is activated when the system is not
in use.

The figures show how a normal system is made up:

1. Air compressor

2. Safety valve

3. Safety valve

4. Relief pipe

5. Test connection, filling

6. Check valve

7. Four-way safety valve

8. Relief valve

9. Air dryer

10. Drain tap

11. Tank

WET TANK

1

2

8

6

11

10

7

5

3

4

344 297

Air compressor without air dryer.

WET TANK

1

2

3

9

8

6

11

10

7

5

3

4

344 298

Air compressor with air dryer.

INSTALLATION
MANUAL

© Scania CV AB 2016, Sweden

Torsional oscillations

01:01 Issue 8.0 en-GB 32

Torsional oscillations

Torsional oscillation arises in any shaft system which includes a combustion engine.
Depending on the combination of the design of the shaft system and the operating
speed, these oscillations may attain high amplitudes and therefore place great strain
on the equipment. This may even lead to total breakdown in a part of the shaft sys­tem. This process may be very rapid.

IMPORTANT!

A torsional oscillation calculation must be carried out for each unique engine instal­lation and be documented in conjunction with the installation report. The customer
or installer is responsible for performing this calculation.

If no torsional oscillation calculation has been carried out, or one has been carried out
with unsatisfactory results, Scania Engines takes no financial or technical responsi­bility for installation problems or engine breakdowns caused by torsional oscilla­tions.

An unsuitably assembled installation may mean that it is necessary to limit the oper­ating speed range or refrain from using a front-mounted power take-off.

If a torsional oscillation calculation is made at the planning stage, it is usually possi­ble to easily adjust the shaft system to provide the safest engine installation.

INSTALLATION
MANUAL

© Scania CV AB 2016, Sweden

Torsional oscillations

01:01 Issue 8.0 en-GB 33

Data for torsional oscillation calculation

Form for torsional oscillation calculation is available on SAIL.

Contact your nearest Scania distributor if you require help downloading the form or
with the torsional oscillation calculation.

The following information is required for the calculation:

1. Engine type designation and classification society.

2. Operating speed and power.

3. The equipment fitted to the front and rear parts of the engine. State Scania part

number.

4. Gear ratios.

5. Moment of inertia (j) or rotating mass (GD2) for component couplings, flanges,

gears, shafts, propellers, generators etc. which rotate with the engine.

6. For couplings which can be disengaged, flexible couplings and similar, the val-

ues for the component parts are required. If the values are not available, a draw­ing of the part is required showing diameters, widths and thicknesses of the
component parts.

7. Dynamic rigidities of flexible couplings, shafts and belt transmissions. However,

for shafts the material, length, outside and inside diameters, press-in lengths,
shrink-on lengths and similar can be stated. For belt transmissions, we require
shaft spacing, pulley diameters, belt type, number of belts and dynamic rigidities.

8. In the case of generator sets, a drawing of the generator shaft must be included

with the calculation if it is to be approved by a classification society.

INSTALLATION
MANUAL

© Scania CV AB 2016, Sweden

Torsional oscillations

01:01 Issue 8.0 en-GB 34

Torsional oscillation calculations from Scania

Scania's torsional oscillation calculations are made with direct frequency response
for all configurations up to 350 Hz in a linear system for the engine speeds in ques­tion. The calculation is based on technical data provided to Scania by the customer
or manufacturer for parts forming part of the elastic mass system which are not man­ufactured by Scania.

An approved calculation forms a guarantee against damage caused by torsional os­cillations for all rotating parts from Scania that are included in the engine installation
under Scania's general warranty commitments. The approval should not be regarded
as a general system warranty in any other respect.

Scania only takes responsibility for parts in Scania's product range and not for any
other parts. Scania can, however, give a warning if the calculation shows that non­Scania parts are subjected to high torsional amplitudes.

Together with the different subsuppliers, the supplier of the complete engine instal­lation to the customer should confirm the torsional capacity and provide approval for
each component, based on the torsional oscillation calculation.

ISO 3046/V applies where appropriate.

The torsional oscillation calculation does not allow Scania to provide any statement
or guarantee as regards hunting.

Torsional oscillation calculations may also be performed by companies other than
Scania. The data required for performing these calculations can be obtained from
SAIL.

INSTALLATION
MANUAL

© Scania CV AB 2016, Sweden

General tightening torques for screw joints

01:01 Issue 8.0 en-GB 35

General tightening torques for screw joints

Specification of normal tightening torques

The specifications in the tables on the following pages show the normal tightening
torques for screws and nuts.

The following conditions apply:

• A tolerance of ±15% applies to all values unless otherwise specified.

• All contact surfaces are to be clean and free of paint and the like.

• Screws and nuts are normally not lubricated regardless of surface treatment.

Union assemblies

The specified values apply with a tolerance of ±5%. The values apply to tightening
with a counterhold.

Thread inserts

The specified tightening torques also apply to screw joints with a thread insert (Heli­Coil). Thread inserts often provide greater strength compared to a directly screwed
thread. This creates a stronger screw joint in, for example, aluminium. For this rea­son, thread inserts are used in certain joints in Scania's production.

INSTALLATION
MANUAL

© Scania CV AB 2016, Sweden

General tightening torques for screw joints

01:01 Issue 8.0 en-GB 36

Tightening torques

Hexagon screws, hexagon socket screws, Torx screws, hexagon
nuts

Metric thread, coarse pitch

Thread Strength class 8.8/8

Tightening torque (Nm)

M4 2.9

M5 6

M6 9.5

M8 24

M10 47

M12 84

M14 135

M16 210

M18 290

M20 420

M22 580

M24 730

321 514

INSTALLATION
MANUAL

© Scania CV AB 2016, Sweden

General tightening torques for screw joints

01:01 Issue 8.0 en-GB 37

Flange screws with hexagonal head and hexagonal flange nuts

Metric thread, coarse pitch

Thread forming Torx screws and hexagon screws with captive
washer

Modified metric thread, coarse pitch

Thread Strength class 8.8/8

Tightening torque (Nm)

M5 6.7

M6 10.2

M8 26

M10 50

M12 92

M14 149

M16 184

Thread Class 8 Class 10

Tightening torque (Nm)

M4 2.9 -

M6 9.4 11

M8 24 26

M10 47 49

M12 80 85

321 515

321 504

INSTALLATION
MANUAL

© Scania CV AB 2016, Sweden

General tightening torques for screw joints

01:01 Issue 8.0 en-GB 38

Stud end in threaded hole, strength class 8.8/8

Metric thread, coarse pitch

The stud end must be tightened in the threaded hole so that the stud does not come
loose when undoing the nut. To tighten the stud in the threaded hole the torque must
just overcome the friction in the thread and generate a preload. The torque for locking
is 50% of the normal torque for hexagon screws, hexagon socket screws, Torx screws
and hexagon nuts.

Union nuts for ferrule

Thread Tightening torque (+/-15% Nm)

For pipe diam­eter

Steel pipe with
greased steel
nut

Plastic pipe with steel fer­rule and brass or steel nut

Plastic pipe with brass fer­rule and nut with rubber
seal

M10x1 5 15 10 -

M12x1.5 6 20 10 -

M14x1.5 8 30 20 -

M16x1.5 10 40 25 15

M18x1.5 12 50 30 20

M20x1.5 12 55 35 -

M24x1.5 16 60 50 40

M30x2 22 120 - -

321 506

321 507

323 456

INSTALLATION
MANUAL

© Scania CV AB 2016, Sweden

Sticker “Powered by Scania”

01:01 Issue 8.0 en-GB 39

Special torques for engine suspension

Front engine suspension

Rear engine suspension?

Sticker “Powered by Scania”

Customers who so desire can order the sticker “Powered by Scania” to attach to the
machine.

Machines operated using Scania's industrial and marine engines must be uniformly
marked, therefore this is the only sticker which should be attached to the machine
containing the engine.

Instructions for positioning the sticker are included. For more information, contact
your nearest Scania distributor.

Type of screw Tightening torque

25 mm clamping length, M16, 10.9 130 Nm, 90°

50 mm clamping length, M16, 10.9 130 Nm, 135°

Type of screw Tightening torque

M14, 8.8 149 Nm

P O W E R E D B Y

344 299