03-018-15
Engine, 4.6L (2V)
03-018·15
IN-VEHICLE SERVICE (Continued)
4. Install Valve Spring Compressor T91 P-6565-A
under camshaft (6250) and on top of valve spring
retainer.
VALVE SPRING SPACER
T91 P-6565-AH
VIEW
A
A15052-C
5.
Compress valve spring (65 1 3) and remove
rocker arm (6564).
6. Remove Valve Spring Compressor T9 1 P-6565-A
and Valve Spring Spacer T9 1 P-6565-AH.
7. Repeat Steps 2 through 6 until all necessary
rocker arms are removed.
I
n
stallat
ion
1 . Apply clean engine oil to valve stem and tip,
rocker arm contact surfaces and valve tappet.
2.
Install Valve Spring Spacer T9 1 P-6565-AH
between valve spring coils.
3. NOTE: Piston must be at the bottom of its stroke
and camshaft at base circle.
Compress valve spring using Valve Spring
Compressor T9 1 P-6565-A and install rocker arm.
4. Remove valve spring compressor and spacer.
5. Repeat Steps 1 through 4 until all rocker arms are
installed.
6. Install valve cover, as described.
7. Start engine and check for leaks.
Valve Tappet, Hydraulic
Removal
1 . Remove rocker arms (6564) as described.
2.
Remove valve tappets (6500) from cylinder
heads (6049).
3.
Clean and inspect valve tappets as described in
Section 03-0Q.
Installation
1 . Apply clean engine oil to valve stem and tip,
rocker arm roller contact surfaces and valve
tappets and cylinder head valve tappet bore.
2.
NOTE: Valve tappets must have no more than 1 .5
mm (0.059 inch) of plunger travel prior to
installation.
Install valve tappets into cylinder heads.
3.
Install rocker arms as described.
Valve Spring, Retainer and Valve Stem Seal
SPECIAL SERVICE
TOOL(S)
REQUIRED
Description
Tool Number
Valve Spring Spacer
T9 1 P-6565-AH
Valve Spring Compressor
T91 P-6565-A
Valve Stem Seal Replacer
T91P-657 1-A
Removal
1 . Remove valve covers (6582) and rocker arms
(6564) as described.
2.
Remove spark plug ( 1 2405) from applicable
cylinder. Refer to Section 03-078.
3. Position piston (6108) at top of stroke with both
exhaust valve (6505) and intake valve (6507)
closed.
4.
NOTE: Failure of air pressure to hold the exhaust
valve and intake valve closed while performing
the following steps is an indication of valve
and
I
or valve seat damage and requires removal
of cylinder head (6049).
Install an air line with an adapter in the spark plug
hole and turn air supply on.
5. Install Valve Spring Spacer T9 1 P-6565-AH
between valve spring coils.
1997 Thunderbird, Cougar July 1996
Содержание Thunderbird
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