Valve Spring Tension; Valve Spring Squareness; Camshaft Follower (2.3L); Intake Manifold - Ford LRG-423 Service Manual

01-31 Engine Service
SERVICE PROCEDURES (Continued)
Refer to Engine Service in the Rotunda Tool catalog
for a description of the various types of valve
resurfacing equipment.
The valve refacing operation should be closely
coordinated with the valve seat refacing operations so
that the finished angles of the valve face and valve
seat will be to specifications and provide a
compression-tight fit.
Make sure refacer grinding wheels are properly
dressed.
Valve Spring Tension
Inspect the valve spring, valve spring retainers, and
keys for wear or damage. Discard any damaged parts.
Check the valve springs for proper pressure at the
specified spring lengths using Valve/Clutch Spring
Tester TOOL-651 3-DD, or equivalent. Apply torque
until click is heard, read torque wrench and multiply
reading by two. Weak valve springs cause poor engine
performance. Replace any valve spring not within
specification. Refer to the specification section.
Manually rotating the valve spring assemblies while
installed in the engine will not determine condition of
valve springs.
CAUTION:
Make sure the valve springs are
reassembled to their own original dampers by
pushing damper on the spring.
Do
not open
damper with any kind of tool in order to
reassemble.
VALVE SPRING
SET KNOB TO
COMPRESSED
LENGTH OF SPRING
A21 330-A
Valve Spring Squareness
Check each valve spring for squareness using a steel
square and a flat surface. Stand the valve spring and
square on end of the flat surface. Slide the valve
spring up to the square. Revolve the valve spring
slowly and observe the space between the top coil of
the valve spring and the square. Refer to the
illustration below.
I-- I
-
-
I I
- h)
- I- I
-
CHECK
CLOSED COIL END DOWNWARD
A851 7-A
Refer to Specifications for out-of-square limits. Follow
the same procedure to new valve springs before
installation.
Make sure the proper valve spring (color-coded) is
installed.
CAUTION: Make sure the valve springs are
reassembled to their own original dampers by
pushing damper on the valve spring.
Do
not open
damper with any kind of tool in order to
reassemble.
Camshaft Follower (2.3L)
Cleaning
Clean all parts thoroughly. Make sure all oil passages
are open.
Inspection
Inspect the roller finger follower for indications of
scuffing or abnormal wear. If the pad is grooved,
replace the roller finger follower. Do not
attempt to
true this surface by grinding.
Intake Manifold
Cleaning
Remove all gasket material from the machined
surfaces of the intake manifold. Clean the manifold in
a suitable solvent and dry it with compressed air.
Inspection
NOTE: Remove all filings and foreign matter that may
have entered the manifold as a result of service.
Inspect the manifold for cracks, damaged gasket
surfaces, or other problems that would make it unfit for
further service. Replace all studs that are stripped or
otherwise damaged.