Installation - Valve Springs; Valve Assembly; Valve Stem Seal - Mercedes-Benz 2005 Sprinter Service Manual

9 - 32 ENGINE
VALVE SPRINGS (Continued)
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
(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,
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,
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.
screw retaining fork
screw retaining fork
VA
into
into