2006 MERCEDES-BENZ SPRINTER Fuel

NOTE: The piston of cylinder #1 must be positioned
at ignition TDC when the inlet camshaft is locked.
(8) Insert locking pin through the first camshaft
bearing cap into the whole in the camshaft sprocket.
NOTE: Do Not use old camshaft sprocket bolts.
(9) Fit camshaft sprocket with timing chain fitted
on, onto exhaust camshaft paying attention to posi-
tion of dowel pin. Tighten bolt to 18N´m (159 lbs.in.).
(10) Install timing chain tensioner (Refer to 9 -
ENGINE/VALVE TIMING/TIMING BELT/CHAIN
AND SPROCKETS - INSTALLATION).
(11) Inspect/Set basic position of camshafts (Refer
to 9 - ENGINE/CYLINDER HEAD/CAMSHAFT(S) -
STANDARD PROCEDURE).
(12) Insert slide rail and bolt the driver into the
inlet camshaft. Tighten bolt driver to 50N´m (37 lbs.
in.).
(13) Install front cover at cylinder head.
(14) Install cylinder head cover (Refer to 9 -
ENGINE/CYLINDER HEAD/CYLINDER HEAD
COVER(S) - INSTALLATION).
NOTE: Refer to the appropriate injector servicing
procedures for cleaning of injectors and recesses.
(15) Clean and install injectors (Refer to 14 -
FUEL SYSTEM/FUEL INJECTION/FUEL INJEC-
TOR - STANDARD PROCEDURE), (Refer to 14 -
FUEL SYSTEM/FUEL INJECTION/FUEL INJEC-
TOR - INSTALLATION).
(16) Reconnect negative battery cable.WARNING: (Refer to 14 - FUEL SYSTEM - WARN-
ING).
WARNING: USE EXTREME CAUTION WHEN THE
ENGINE IS OPERATING. DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR
HANDS NEAR THE PULLEYS, BELTS OR FAN. DO
NOT WEAR LOOSE CLOTHING.
(17) Start engine and inspect for leaks.Care must
be taken to observe the fuel system warning (Refer to
14 - FUEL SYSTEM - WARNING).
(18) Install engine cover (Refer to 9 - ENGINE
COVER - INSTALLATION).
CYLINDER HEAD COVER(S)
REMOVAL
(1) Disconnect negative battery cable.
(2) Disconnect the air inlet and set aside.
(3) Detach hose from oil separator.
(4) Disconnect the camshaft position sensor.
(5) Disconnect fuel injector and glow plug harness
and set aside.
(6) Remove fuel high pressure pipes and injectors
(Refer to 14 - FUEL SYSTEM/FUEL INJECTION/
FUEL INJECTOR - REMOVAL).
(7) Disconnect the out let line.
(8) Remove cylinder head cover retaining bolts and
remove cover (Fig. 25).
Fig. 24 CAMSHAFT BEARING TIGHTENING
SEQUENCE #2
VAENGINE 9 - 33

INSTALLATION
NOTE: Do Not tighten the cylinder head cover first.
The fuel injectors are aligned by way of the cylinder
head cover.
(1) Fit cylinder head cover with new gasket and
install bolts, hand tight (Fig. 25).
(2) Insert all fuel injectors, tensioning claws and
lines. Insert new bolts and tighten. (Refer to 14 -
FUEL SYSTEM/FUEL INJECTION/FUEL INJEC-
TOR - INSTALLATION).
(3) Tighten cylinder head cover bolts to 9 N´m (80
lbs. in.).
(4) Install and properly route fuel injector and
glow plug wiring harness, making appropriate con-
nections.
(5) Connect the camshaft position sensor.
(6) Connect the return flow line.
(7) Attach oil separator hose.
(8) Connect negative battery cable.
WARNING: (Refer to 14 - FUEL SYSTEM - WARN-
ING).WARNING: USE EXTREME CAUTION WHEN ENGINE
IS OPERATING. DO NOT STAND IN A DIRECT LINE
WITH FAN. DO NOT PUT YOUR HANDS NEAR PUL-
LEYS, BELTS OR FAN. DO NOT WEAR LOOSE
CLOTHES.
(9) Start engine and inspect for leaks. Care must
be take to observe the fuel system warning (Refer to
14 - FUEL SYSTEM - WARNING).
VALVE STEM SEALS
DESCRIPTION
The valve stem seals are made of Viton rubber. The
seals are positioned over the valve stem and seated
on the valve guide. For servicing of the valve seals
(Refer to 9 - ENGINE/CYLINDER HEAD/VALVE
SPRINGS - REMOVAL).
Fig. 25 CYLINDER HEAD COVER
1 - ENGINE WIRING HARNESS 7 - GASKET
2 - GLOW PLUG CONNECTOR 8 - CYLINDER HEAD COVER
3 - CAMSHAFT POSITION SENSOR 9 - CRANKCASE VENT LINE
4 - OUTLET LINE 10 - GASKET
5 - INTAKE MANIFOLD 11 - FUEL INJECTOR
6 - GASKET 12 - GROUND
9 - 34 ENGINEVA

VALVE SPRINGS
REMOVAL
REMOVAL - VALVE SPRINGS
(1) Disconnect negative battery cable.
(2) Remove injectors (Refer to 14 - FUEL SYS-
TEM/FUEL INJECTION/FUEL INJECTOR -
REMOVAL).
(3) Remove cylinder head cover (Refer to 9 -
ENGINE/CYLINDER HEAD/CYLINDER HEAD
COVER(S) - REMOVAL).
(4) Remove timing chain tensioner (Refer to 9 -
ENGINE/VALVE TIMING/TIMING BELT/CHAIN
AND SPROCKETS - REMOVAL).
(5) Remove front cover at cylinder head (Refer to 9
- ENGINE/CYLINDER HEAD - REMOVAL).
(6) Remove top guide rail (Refer to 9 - ENGINE/
CYLINDER HEAD - REMOVAL).
(7) Remove camshafts (Refer to 9 - ENGINE/CYL-
INDER HEAD/CAMSHAFT(S) - REMOVAL).
NOTE: The timing chain must be held in up position
so as not to jam during procedure.
(8) Position piston of cylinder to be processed to
DTC by rotating the crankshaft clockwise.DO NOT
crank engine. DO NOT rotate engine backward.
CAUTION: Make sure the crankshaft lock is in posi-
tion and properly secured for each cylinder being
serviced. Failure to do so may result in damage to
the vehicle or personal injury.
(9) Install crankshaft lock, special tool #8932.
(10) Seal injector hole with adaptor # 9534 and
retain with original tensioning claw.
(11) Connect regulated air supply to special tool #
9534 and pressurize the cylinder to 5 bar (73 psi.).
WARNING: Valve springs and retainers must be
kept in order of the cylinder they were removed.
NOTE: Using valve service tools #9307, screw
retaining fork into threaded edge of cylinder head
and position thrust piece vertically at top of each
exhaust valve spring retainer. Use the cam bearing
cap threaded holes to position service tool for
removal of intake valve spring retainers.
(12) Compress valve spring (Fig. 26).(13) Remove valve collates (Fig. 26).
(14) Remove top valve spring retainer and valve
spring (Fig. 27).
Fig. 26 VALVE COMPRESSOR
1 - VALVE ASSEMBLY TOOL
2 - VALVE COLLATE
3 - MAGNET
Fig. 27 VALVE ASSEMBLY
1 - VALVE
2 - BOTTOM VALVE SPRING RETAINER
3 - VALVE STEM SEAL
4 - VALVE SPRING
5 - TOP VALVE SPRING RETAINER
6 - VALVE COLLATES
7 - CYLINDER HEAD
VAENGINE 9 - 35

NOTE: Using valve service tools #9307, screw
retaining fork into threaded edge of cylinder head
and position thrust piece vertically at the top of
each exhaust valve spring retainer. Use the cam
bearing cap threaded holes to position service tool
for installation of intake valve spring retainers.
NOTE: Ensure that the valve keepers are seated
properly.
(9) Compress valve and install valve collates (Fig.
26).
CAUTION: Make sure the crankshaft lock is in posi-
tion and properly secured for each cylinder being
serviced. Failure to do so may result in damage to
the vehicle or personal injury.
(10) Repeat procedure for each cylinder as neces-
sary.
(11) Remove special tooling from cylinder head.
(12) Position piston of #1 cylinder to ignition TDC.
(13) Install camshafts and check basic position
(Refer to 9 - ENGINE/CYLINDER HEAD/CAM-
SHAFT(S) - INSTALLATION).
(14) Install top guide rail (Refer to 9 - ENGINE/
CYLINDER HEAD - INSTALLATION).
(15) Install front cover at cylinder head (Refer to 9
- ENGINE/CYLINDER HEAD - INSTALLATION).
(16) Install timing chain tensioner with new gas-
ket (Refer to 9 - ENGINE/VALVE TIMING/TIMING
BELT/CHAIN AND SPROCKETS - INSTALLATION)
(17) Install cylinder head cover (Refer to 9 -
ENGINE/CYLINDER HEAD/CYLINDER HEAD
COVER(S) - INSTALLATION).
WARNING: (Refer to 14 - FUEL SYSTEM - WARN-
ING).
(18) Install injectors (Refer to 14 - FUEL SYS-
TEM/FUEL INJECTION/FUEL INJECTOR -
INSTALLATION).
(19) Reconnect negative battery cable.
(20) Start the engine, allow to warm, turn engine
off and inspect for leaks. Care must be taken to
observe the fuel system warning (Refer to 14 - FUEL
SYSTEM - WARNING)
(21) Install engine cover (Refer to 9 - ENGINE
COVER - INSTALLATION).
INSTALLATION - VALVES
WARNING: Valves must be kept in their original
positions in cylinder head. Failure to do so will
result in engine damage.NOTE: Inspect all valves, springs and retainers for
wear or damage. Replace as necessary.
(1) Install valves in their original position in the
cylinder head.
(2) Install lower valve spring retainer.
(3) Install valve stem seal.
(4) Install valve spring.
(5) Install valve spring retainer.
NOTE: Using tool, screw retaining fork into
threaded edge of cylinder head and position thrust
piece vertically at the top of each valve spring
retainer.
NOTE: Ensure that the valve keepers are seated
properly.
(6) Using a suitable valve spring compressor, com-
press valve spring and install valve keepers.
(7) Repeat steps 3 through 7 for each valve as nec-
essary.
(8) Remove valve assembly from cylinder head.
(9) Install cylinder head on engine block (Refer to
9 - ENGINE/CYLINDER HEAD - INSTALLATION).
(10) Install glow plugs (Refer to 8 - ELECTRICAL/
IGNITION CONTROL/GLOW PLUG - INSTALLA-
TION).
(11) Connect negative battery cable.
WARNING: US EXTREME CAUTION WHEN THE
ENGINE IS IN OPERATION. DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR
HANDS NEAR THE PULLEYS, BELTS OR FAN. DO
NOT WEAR LOOSE CLOTHING.
(12) Start engine and check for leaks. Care must
be taken to observe the fuel system warning (Refer to
14 - FUEL SYSTEM - WARNING)
(13) Install engine cover (Refer to 9 - ENGINE
COVER - INSTALLATION).
ENGINE BLOCK
STANDARD PROCEDURE
STANDARD PROCEDURE - REPLACING ENGINE
CORE AND OIL GALLERY PLUGS
Using a blunt tool such as a drift and a hammer,
strike the bottom edge of the cup plug. With the cup
plug rotated, grasp firmly with pliers or other suit-
able tool and remove plug (Fig. 30).
VAENGINE 9 - 37

CAUTION: Oil thread and head contact surfaces of
bolts that retain the crankshaft bearing caps;
tighten bolts from inside to outside, beginning at
the fit bearing. Rotate crankshaft to check clear-
ance.
(1) Install crankshaft.
CAUTION: The crankshaft bearing caps are num-
bered consecutively, beginning with the first crank-
shaft bearing cap at the front of the engine.
Attention must be paid to the way the crankshaft
bearing caps fit. If correctly installed, the lug, or
raised boss, on the crankshaft bearing cap is point-
ing to the left when viewed in the direction of travel
(intake side).
(2) Install the crankshaft bearing caps. Tighten
bolts in two stages. 55N´m (40.5 lbs. ft.), then 90É.
(3) Install the pistons (Refer to 9 - ENGINE/EN-
GINE BLOCK/PISTON & CONNECTING ROD -
INSTALLATION).
(4) Install the end cover (Refer to 9 - ENGINE/EN-
GINE BLOCK/CRANKSHAFT OIL SEAL - REAR -
INSTALLATION).
(5) Install the timing case cover (Refer to 9 -
ENGINE/VALVE TIMING/TIMING BELT / CHAIN
COVER(S) - INSTALLATION).
(6) Install the engine (Refer to 9 - ENGINE -
INSTALLATION).
(7) Fill the crankcase with the correct engine oil,
to the proper level. Refer to the owners manual for
specifications.
(8) Fill the cooling system with the proper coolant,
to the proper level (Refer to 7 - COOLING/ENGINE/
COOLANT - STANDARD PROCEDURE).
(9) Connect the negative battery cable.
WARNING: USE EXTREME CAUTION WHEN THE
ENGINE IS OPERATING. DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR
HANDS NEAR THE PULLEYS, BELTS, OR FAN. DO
NOT WEAR LOOSE CLOTHES.
(10) Start engine and inspect for leaks. Care must
be taken to observe the fuel system warning (Refer to
14 - FUEL SYSTEM - WARNING).
CRANKSHAFT OIL SEAL -
REAR
REMOVAL
This must be done with the transmission removed
from the vehicle.
(1) Disconnect the negative battery cable.
(2) Raise and support the vehicle.
(3) Drain the engine oil.NOTE: Loosen all of the oil pan bolts to assure that
the oil pan gasket is not damaged when removing
the rear main oil seal and end cover assembly.
NOTE: Inspect the oil pan gasket for damage. If the
oil pan gasket is damaged, remove the oil pan and
replace the oil pan gasket.
(4) Loosen the oil pan bolts.
(5) Remove the flywheel.
CAUTION: Care must be taken when removing the
rear main seal and adaptor assembly. Failure to do
so will result in damage to the oil pan gasket.
(6) Remove the rear main seal/adaptor retaining
bolts and carefully pry the adaptor from the crank-
case at the adaptor shoulders (Fig. 33).
VAENGINE 9 - 41

(19) Fill the cooing system with proper coolant, to
the proper level (Refer to 7 - COOLING/ENGINE/
COOLANT - STANDARD PROCEDURE).
(20) Connect negative battery cable.
WARNING: USE EXTREME CAUTION WHEN THE
ENGINE IS OPERATING. DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR
HANDS NEAR THE PULLEYS, BELTS, OR FAN. DO
NOT WEAR LOOSE CLOTHES.
WARNING: (Refer to 14 - FUEL SYSTEM - WARN-
ING).
(21) Start the engine and inspect for leaks.
PISTON RINGS
STANDARD PROCEDURE - PISTON RING FIT-
TING
(1) Carefully clean the carbon from all ring
grooves. Oil drain openings in the oil ring groove and
pin boss must be clear. DO NOT remove metal from
the grooves or lands. This will change ring-to-groove
clearances and will damage the ring-to-land seating.
(2) Be sure the piston ring grooves are free of
nicks and burrs.
(3) Measure the ring side clearance with a feeler
gauge fitted snugly between the ring land and ring
(Fig. 43). Rotate the ring in the groove. It must move
freely around circumference of the groove.
RING SIDE CLEARANCE CHART
ITEM SPECIFICATION
Top Compression Ring 0.012 - 0.016 mm
(0.0047 - 0.0063 in.)
Second Compression
Ring0.05 - 0.09 mm
(0.0019 - 0.0035 in.)
Oil Control Ring 0.03 - 0.07 mm
(0.0011 - 0.0027 in.)
(4) Place ring in the cylinder bore and push down
with inverted piston to position near lower end of the
ring travel. Measure ring gap with a feeler gauge fit-
ting snugly between ring ends (Fig. 44).
RING GAP MEASUREMENT CHART
ITEM SPECIFICATION
Top Compression Ring 0.229 - 0.610 mm
(0.0090 - 0.0240 in.)
Second Compression
Ring0.483 - 0.965 mm
(0.0190 - 0.080 in.)
Oil Control Ring 0.254 - 1.500 mm
(0.010 - 0.060 in.)
(5) The oil control rings are symmetrical, and can
be installed with either side up. It is not necessary to
use a tool to install the upper and lower rails. Insert
oil rail spacer first, then side rails.
(6) Using a ring expander, install compression
rings with manufactures designation pointing toward
piston crown (Fig. 45).
Fig. 43 Measuring Piston Ring Side Clearance
1 - FEELER GAUGE
Fig. 44 Ring
1 - FEELER GAUGE
9 - 52 ENGINEVA

REMOVAL
(1) Disconnect the negative battery cable.
(2) Raise and support the vehicle.
(3) Drain engine oil into a suitable, and appropri-
ately marked container.
(4) Remove engine mount to chassis nuts.
(5) Lower vehicle and install engine support.
(6) Remove the turbo charger heat shield to radia-
tor support bolts.
(7) Raise engine until the weight of the engine no
longer rests on the engine mounts.
(8) Raise and support the vehicle.
(9) Detach the front stabilizer bar at the front axle
and rotate it downward.
(10) Unplug the oil level sensor (Fig. 67).
(11) Remove the oil level sensor retaining screw,
oil level sensor and discard the O-ring (Fig. 67).
INSTALLATION
(1) Seat new O-ring on oil level sensor and lubri-
cate O-ring with clean engine oil (Fig. 67).
(2) Install the oil level sensor into the oil pan and
tighten screw to 124 lbs. in.(14N´m) (Fig. 67).
(3) Connect oil level sensor wiring harness connec-
tor (Fig. 67).
(4) Rotate front stabilizer bar upward and secure
to axle beam. Tighten to 22 lbs.ft. (30 N´m)
(5) Lower the vehicle.
(6) Lower the engine into the mounts.
(7) Remove engine support fixture.(8) Raise and support the vehicle.
(9) Tighten both engine mount to chassis nuts.
(10) Install and tighten oil drain plug.
(11) Lower vehicle and install the appropriate
engine oil.
INTAKE MANIFOLD
REMOVAL
WARNING: NO FIRE, SPARKS OR SMOKING.
STORE FUELS ONLY INTO SUITABLE AND APPRO-
PRIATELY MARKED CONTAINERS, AND WEAR
PROTECTIVE CLOTHING. (Refer to 14 - FUEL SYS-
TEM - WARNING).
WARNING: DO NOT OPEN THE COOLING SYSTEM
UNLESS THE COOLANT TEMPERATURE IS BELOW
90ÉC (194ÉF). OPEN RADIATOR CAP SLOWLY TO
RELEASE PRESSURE. STORE COOLANT ONLY
INTO SUITABLE AND APPROPRIATELY MARKED
CONTAINERS, WEAR PROTECTIVE CLOTHING AND
EYE PROTECTION.
(1) Disconnect the negative battery cable.
(2) Partially drain coolant from the radiator.
(3) Remove the engine cover (Refer to 9 - ENGINE
- REMOVAL).
(4) Remove the high pressure fuel lines (Fig. 68).
Fig. 67 OIL LEVEL SENSOR
1 - OIL PAN
2 - O-RING
3 - WIRING HARNESS
4 - BOLT
5 - OIL LEVEL SENSOR
VAENGINE 9 - 65

(5) Remove the fuel rail (Refer to 14 - FUEL SYS-
TEM/FUEL DELIVERY/FUEL RAIL - REMOVAL).
(6) Remove the fuel rail support block between cyl-
inders #1 and #2 (Fig. 68).
(7) Disconnect the charge air hose at the intake
manifold (Fig. 69).
Fig. 68 FUEL INJECTORS AND HIGH PRESSURE
FUEL LINES
1 - FUEL RAIL
2 - HIGH PRESSURE FUEL INJECTOR LINES
3 - INTAKE MANIFOLD
4 - FUEL INJECTOR
5 - CRANKCASE VENTILATION BREATHER
6 - CAMSHAFT POSITION SENSOR
9 - 66 ENGINEVA