2005 MERCEDES-BENZ SPRINTER warning

(2) Counter hold the camshaft with an open end
wrench and install driver of inlet camshaft sprocket.
Tight bolt to 50N´m (37 lbs. ft.).
(3) Remove camshaft sprocket locking pin.
(4) Carefully raise locking pawl of top guide rail
and install front cover at cylinder head.
(5) Install timing chain tensioner with new gasket
(Refer to 9 - ENGINE/VALVE TIMING/TIMING
BELT/CHAIN AND SPROCKETS - INSTALLA-
TION).
(6) Install engine cover (Refer to 9 - ENGINE/
CYLINDER HEAD/CYLINDER HEAD COVER(S) -
INSTALLATION).
(7) Reconnect negative battery cable.
WARNING: US 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.
(8) Start engine and inspect for leaks.
CAMSHAFT(S)
STANDARD PROCEDURE - CHECKING
CAMSHAFT POSITION
(1) Disconnect negative battery cable.
(2) Remove engine cover (Refer to 9 - ENGINE
COVER - REMOVAL).
WARNING: (Refer to 14 - FUEL SYSTEM - WARN-
ING)
(3) Remove injectors (Refer to 14 - FUEL SYS-
TEM/FUEL INJECTION/FUEL INJECTOR -
REMOVAL).
(4) Clean injectors and recesses(Refer to 14 -
FUEL SYSTEM/FUEL INJECTION/FUEL INJEC-
TOR - STANDARD PROCEDURE).
(5) Remove cylinder head cover (Refer to 9 -
ENGINE/CYLINDER HEAD/CYLINDER HEAD
COVER(S) - REMOVAL).
NOTE: Rotate engine at crankshaft only. DO NOT
crank engine at the camshaft and DO NOT rotate
the engine backward.
(6) Position piston of cylinder #1 to ignition TDC.
(7) Insert the locking pin (special tool #8929)
through first camshaft bearing cap into the hole in
the left inlet camshaft sprocket (Fig. 18).
NOTE: The two markings in the inlet camshaft
sprockets must be positioned opposite and mark-ings of camshaft and camshaft bearing cap must be
aligned. If not, perform basic position of camshafts.
(8) Remove locking pin from camshaft bearing cap
hole.
(9) Install cylinder head cover (Refer to 9 -
ENGINE/CYLINDER HEAD/CYLINDER HEAD
COVER(S) - INSTALLATION).
(10) Install injectors (Refer to 14 - FUEL SYS-
TEM/FUEL INJECTION/FUEL INJECTOR -
INSTALLATION).
Fig. 18 CHECKING CAMSHAFT POSITION
1 - CAMSHAFT SPROCKET ALIGNMENT DOTS
2 - CAMSHAFT LOCK POSITION
3 - INTAKE CAMSHAFT SPROCKET
4 - CAMSHAFT AND BEARING CAP ALIGNMENT MARKS
5 - CAMSHAFT LOCKING PIN (SPECIAL TOOL #8929)
6 - INTAKE CAMSHAFT SPROCKET
VAENGINE 9 - 27
CYLINDER HEAD (Continued)

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
NO WEAR LOOSE CLOTHING.
(11) Start the engine and inspect for leaks.
REMOVAL
(1) Disconnect negative battery cable.
(2) Remove engine cover.(Refer to 9 - ENGINE -
REMOVAL).
WARNING: (Refer to 14 - FUEL SYSTEM - WARN-
ING)
(3) Remove high pressure lines and injectors
(Refer to 14 - FUEL SYSTEM/FUEL INJECTION/
FUEL INJECTOR - REMOVAL).
(4) Remove cylinder head cover (Refer to 9 -
ENGINE/CYLINDER HEAD/CYLINDER HEAD
COVER(S) - REMOVAL).
NOTE: Rotate engine at the crankshaft only. DO
NOT rotate the engine at the camshaft. DO NOT
rotate the engine backward.
(5) Position piston of cylinder #1 to ignition TDC.
(6) Lock inlet camshaft (Fig. 19).
(7) Remove timing chain tensioner (Refer to 9 -
ENGINE/VALVE TIMING/TIMING BELT/CHAIN
AND SPROCKETS - REMOVAL).
NOTE: The lower portain of the cylinder head front
cover is sealed with RTV sealant. Carefully tug front
cover after bolt removal to loosen from cylinder
head.
(8) Remove cylinder head front cover (Refer to 9 -
ENGINE/CYLINDER HEAD - REMOVAL).
(9) Remove top side rail (Refer to 9 - ENGINE/
CYLINDER HEAD - REMOVAL).
CAUTION: For all work in which the crankshaft
should not rotate, secure camshaft gear to timing
chain.
(10) Mark camshaft sprocket relative to timing
chain.
(11) Unbolt camshaft sprocket from exhaust cam-
shaft.
NOTE: Note the position of dowel pin for camshaft
sprocket alignment during reassembly.
(12) Remove camshaft sprocket.CAUTION: Camshaft bearing caps must remain in
proper order and position.
NOTE: Slacken the bolts of the camshaft bearing
caps evenly in steps of one turn until the backpres-
sure is eliminated. Camshafts must not be twisted
when slackening the camshaft bearing caps.
(13) Paint mark or scribe, then remove camshaft
bearing caps.
Fig. 19 CAMSHAFT ALIGNMENT
1 - EXHAUST CAMSHAFT SPROCKET AND CHAIN MARKING
2 - EXHAUST CAMSHAFT SPROCKET BOLTS
3 - EXHAUST CAMSHAFT SPROCKET
4 - CAMSHAFT ALIGNMENT DOTS
5 - INTAKE CAMSHAFT LOCK POSITION
6 - INTAKE CAMSHAFT SPROCKET
7 - INTAKE CAMSHAFT LOCK (SPECIAL TOOL #8929)
8 - INTAKE CAMSHAFT SPROCKET
9 - 28 ENGINEVA
CAMSHAFT(S) (Continued)

(14) Remove the inlet and exhaust camshafts (Fig.
20).
INSTALLATION
CAUTION: The camshafts are sensitive to fractur-
ing. Ensure they are installed free of stress.
CAUTION: Pay attention to assignment of cam-
shafts. Camshaft code numbers are visible on the
thrust collar of the axial bearing.
CAUTION: Oil bucket tappets and camshaft bearing
points. Inspect ease of operation of bucket tappets.
(1) Install inlet and exhaust camshafts.
CAUTION: Install camshafts so that the two holes in
camshaft sprockets are positioned opposite and the
markings of the camshaft and camshaft bearing cap
are aligned.(2) Align inlet and exhaust camshafts at axial
bearing (Refer to 9 - ENGINE/CYLINDER HEAD/
CAMSHAFT(S) - STANDARD PROCEDURE).
NOTE: Pay attention to markings on camshaft bear-
ing caps.
CAUTION: Do not rotate engine counter clockwise.
(3) Position the piston of cylinder #1 to ignition
TDC.
NOTE: Pay attention to markings on camshaft bear-
ing caps.
(4) Install the bearing caps in reverse order at the
same point. Tighten bearing cap bolts evenly to 9N´m
(80 lbs. in.) in steps each of 1 turn.
NOTE: The piston of cylinder #1 must be positioned
at ignition TDC when the inlet camshaft is locked.
(5) Insert locking pin through the first camshaft
bearing cap into the whole in the camshaft sprocket.
NOTE: Do Not use old camshaft sprocket bolts.
(6) 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.).
(7) Install timing chain tensioner (Refer to 9 -
ENGINE/VALVE TIMING/TIMING BELT/CHAIN
AND SPROCKETS - INSTALLATION).
(8) Inspect/Set basic position of camshafts (Refer
to 9 - ENGINE/CYLINDER HEAD/CAMSHAFT(S) -
STANDARD PROCEDURE).
(9) Insert slide rail and bolt the driver into the
inlet camshaft. Tighten bolt driver to 50N´m (37 lbs.
in.).
(10) Install front cover at cylinder head.
(11) 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.
(12) 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).
(13) Reconnect negative battery cable.
WARNING: (Refer to 14 - FUEL SYSTEM - WARN-
ING).
Fig. 20 CAMSHAFTS AND HOUSING ASSEMBLY
1 - CYLINDER HEAD BOLTS
2 - EXHAUST CAMSHAFT
3 - INTAKE CAMSHAFT
4 - CAMSHAFT HOUSING
5 - CYLINDER HEAD
VAENGINE 9 - 29
CAMSHAFT(S) (Continued)

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.
(14) Start engine and inspect for leaks.Care must
be taken to observe the fuel system warning (Refer to
14 - FUEL SYSTEM - WARNING).
(15) 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. 21).
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 (Fig. 21).
(2) Insert all fuel injectors and tensioning claws.
Insert new bolts and tighten in the following order:
3, 4, 5, 2, 1.(Refer to 14 - FUEL SYSTEM/FUEL
INJECTION/FUEL INJECTOR - 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.
Fig. 21 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 - 30 ENGINEVA
CAMSHAFT(S) (Continued)

(5) Connect the camshaft position sensor.
(6) Connect the return flow line.
(7) Attach oil separator hose.
(8) Install the fuel injector lines (Refer to 14 -
FUEL SYSTEM/FUEL DELIVERY/FUEL LINES -
INSTALLATION).
(9) 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.
(10) Start engine and inspect for leaks. Care must
be take to observe the fuel system warning (Refer to
14 - FUEL SYSTEM - WARNING).
VALVE SPRINGS
REMOVAL
REMOVAL - VALVE SPRINGS
(1) Disconnect negative battery cable.
(2) Remove glow plugs (Refer to 8 - ELECTRICAL/
IGNITION CONTROL/GLOW PLUG - REMOVAL).
(3) Remove injectors (Refer to 14 - FUEL SYS-
TEM/FUEL INJECTION/FUEL INJECTOR -
REMOVAL).
(4) Remove cylinder head cover (Refer to 9 -
ENGINE/CYLINDER HEAD/CYLINDER HEAD
COVER(S) - REMOVAL).
(5) Remove timing chain tensioner (Refer to 9 -
ENGINE/VALVE TIMING/TIMING BELT/CHAIN
AND SPROCKETS - REMOVAL).
(6) Remove front cover at cylinder head (Refer to 9
- ENGINE/CYLINDER HEAD - REMOVAL).
(7) Remove top guide rail (Refer to 9 - ENGINE/
CYLINDER HEAD - REMOVAL).
(8) 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.
(9) Position piston of cylinder to be processed to
DTC by rotating the crankshaft clockwise.DO NOT
crank engine.DO NOT rotate engine backward.
(10) Install crankshaft lock, special tool #8932.
(11) Seal injector hole with connection piece and
retain with orginal tensioning claw.(12) Connect cylinder leak tester with adaptors
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 valve
spring retainer.
(13) Compress valve spring (Fig. 22).
(14) Remove valve collets (Fig. 22).
(15) Remove top valve spring retainer and valve
spring (Fig. 23).
(16) Remove valve stem seals (Fig. 24).
(17) Remove bottom valve spring retainer (Fig. 23).
NOTE: Inspect all cylinder head components for
wear or damage.
(18) Repeat procedure for each cylinder as neces-
sary.
REMOVAL - VALVES
(1) Disconnect negative battery cable.
(2) Remove engine cover (Refer to 9 - ENGINE
COVER - REMOVAL).
Fig. 22 VALVE COMPRESSOR
1 - VALVE ASSEMBLY TOOL
2 - VALVE COLLET
3 - MAGNET
VAENGINE 9 - 31
CYLINDER HEAD COVER(S) (Continued)

(3) Remove cylinder head (Refer to 9 - ENGINE/
CYLINDER HEAD - REMOVAL).WARNING: Suitably mark the valve and the position
in the cylinder head before removal. Failure to do
so will result in improperly seated valves and pos-
sible engine damage after reassembly.
NOTE: Using tool, screw retaining fork into
threaded edge of cylinder head and position thrust
piece vertically at top of valve spring retainer.
(4) Using a suitable valve spring compressor, com-
press valve spring.
(5) Remove valve collets (Fig. 23).
(6) Remove top valve spring retainer and valve
spring (Fig. 23).
(7) Remove valve stem seals (Fig. 24).
(8) Repeat steps 5 through 9 for each valve as nec-
essary.
(9) Remove cylinder head from assembly board.
WARNING: Valves, springs and retainers must be
kept in order of the cylinder they were removed.
(10) Remove valves.
INSTALLATION
INSTALLATION - VALVE SPRINGS
NOTE: Inspect all valve springs and retainers for
wear or damage. Replace as necessary.
(1) Position piston of cylinder to be processed to
TDC by rotating the crankshaft clockwise.DO NOT
crank engine or rotate engine counter clock-
wise.
(2) Connect cylinder leak tester with adaptors and
pressurize the cylinder to 5 bar (73 psi).
(3) Install lower valve spring retainer (Fig. 23).
(4) Install valve stem seal (Fig. 25).
(5) Install valve spring (Fig. 23).
(6) Install valve spring retainer (Fig. 23).
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.
(7) Compress valve and install valve collets (Fig.
22).
(8) Repeat procedure for each cylinder as neces-
sary.
(9) Remove special tooling from cylinder head.
Fig. 23 VALVE ASSEMBLY
1 - VALVE
2 - BOTOM VALVE SPRING RETAINER
3 - VALVE STEM SEAL
4 - VALVE SPRING
5 - TOP VALVE SPRING RETAINER
6 - VALVE COLLETS
Fig. 24 VALVE STEM SEAL
1 - PLIERS
2 - VALVE STEM SEAL
9 - 32 ENGINEVA
VALVE SPRINGS (Continued)

(10) Position piston of #1 cylinder to ignition TDC.
(11) Install camshafts and check basic position
(Refer to 9 - ENGINE/CYLINDER HEAD/CAM-
SHAFT(S) - INSTALLATION).
(12) Install top guide rail (Refer to 9 - ENGINE/
CYLINDER HEAD - INSTALLATION).
(13) Install front cover at cylinder head (Refer to 9
- ENGINE/CYLINDER HEAD - INSTALLATION).
(14) Install timing chain tensioner with new gas-
ket (Refer to 9 - ENGINE/VALVE TIMING/TIMING
BELT/CHAIN AND SPROCKETS - INSTALLATION)
(15) Install cylinder head cover (Refer to 9 -
ENGINE/CYLINDER HEAD/CYLINDER HEAD
COVER(S) - INSTALLATION).
(16) Install glow plugs (Refer to 8 - ELECTRICAL/
IGNITION CONTROL/GLOW PLUG - INSTALLA-
TION).
WARNING: SERVICE VEHICLES IN A WELL VENTI-
LATED AREA AND AVOID IGNITION SORCES. RISK
OF INJURY TO SKIN AND EYES FROM FUEL JET
FLOWING OUT.
(17) Install injectors (Refer to 14 - FUEL SYS-
TEM/FUEL INJECTION/FUEL INJECTOR -
INSTALLATION).
(18) Reconnect negative battery cable.
WARNING: USE EXTREME CAUTION WHEN THE
ENGINE IS OPERATING. DO NOT STAND IN ADIRECT LINE WITH THE FAN. DO NOT PUT YOUR
HANDS NEAR THE PULLEYS, BELTS OR FAN. DO
NOT WEAR LOOSE CLOTHING.
(19) Start the engine and inspect for leaks.Care
must be taken to observe the fuel system warning
(Refer to 14 - FUEL SYSTEM - WARNING)
(20) 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).
Fig. 25 VALVE SEAL INSTALLATION
1 - DRIFT
2 - PROTECTIVE COVER
3 - VALVE
VAENGINE 9 - 33
VALVE SPRINGS (Continued)

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 crankshaft bear-
ing caps fit.
(5) Unbolt crankshaft bearing caps (Fig. 28).
(6) Inspect crankshaft bearing caps and bolts for
wear and stretching.
(7) Remove crankshaft.
INSTALLATION
CAUTION: Oil the bearing shells before inserting
crankshaft.CAUTION: Oil grooves in the thrust washers must
point toward the thrust collars of the crankshaft.
CAUTION: Thrust washers in the bearing cap each
have two retaining lugs as a anti-twist lock.
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.
(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).
Fig. 28 CRANKSHAFT ASSEMBLY
1 - BEARING HALVES IN ENGINE BLOCK
2 - THRUST WASHERS IN ENGINE BLOCK
3 - CRANKSHAFT
4 - BEARING HALVES IN MAIN BEARING CAPS
5 - MAIN BEARING CAPS
6 - THRUST WASHERS IN MAIN BEARING CAPS
7 - MAIN BEARING BOLTS
9 - 36 ENGINEVA
CRANKSHAFT (Continued)