Section 05
ENGINE (4-TEC)
Subsection 08
(CYLINDER HEAD AND VALVES)
SMR2003-020_05_08A.FM
05-08-9
1. Cylinder head screws M6
– cylinder head screws M11
no. 17
retaining cyl-
inder head to engine block.
1. Cylinder head screws M11
Pull up cylinder head
no. 18
.
Remove gasket
no. 19
.
Cleaning
Remove carbon deposits from combustion cham-
ber, exhaust port and piston top.
Inspection
Check for cracks between valve seats, if so, replace
cylinder head.
Check mating surface between cylinder and cylin-
der head for contamination. If so, clean both sur-
faces.
Installation
For installation, reverse the removal procedure.
Pay attention to the following details.
Ensure dowel pins are in place.
Install new cylinder head gasket.
CAUTION:
Each installation of the cylinder head
requires a new cylinder head gasket. Using a
gasket twice will cause engine damage, even if
the engine had not run.
Install cylinder screws M11
no. 17
. Torque screws
as per following procedure.
CAUTION:
This assembly uses stretch screws.
As the screws have been stretched from the
previous installation,
it is very important to
measure each screw at assembly. If screw is
out of specification, replace by a new
. Failure
to replace screws and to strictly follow the
torque procedure may cause screws to loosen
and lead to engine damage.
Torque screws according to following sequence.
First torque to 40 N•m (30 lbf•ft).
Then tighten screws turning an additional
120°
ro-
tation with a torque angle gauge and finish tight-
ening with a
90°
rotation. Torque screws
no. 16
to
10 N•m (88 lbf•
in
).
1. Cylinder screws M11
2. Angle torque wrench
Remove crankshaft locking tool then install plug
with sealing ring.
1
R1503motr98A
1
R1503motr99A
CYLINDER SCREW M11
SERVICE LIMIT
148.5 mm (5.846 in)
1
R1503motr100A
2
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Содержание 2003 GTI LE RFI
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