Lincoln Corsair: Engine System - General Information / General Procedures - Valve Train Analysis
Valve Train Analysis - Engine Off, Valve Cover Removed
NOTE:
The following component inspections are used to diagnose valve train concerns.
-
Check for damaged or severely worn parts and correct assembly.
Valve Train Analysis - Camshaft Lobe Lift
-
Remove the spark plugs.
For additional information, refer to: Spark
Plugs (303-07A Engine Ignition - 2.0L EcoBoost (177kW/240PS) – MI4/2.0L
EcoBoost (184kW/250PS) – MI4, Removal and Installation).
For additional information, refer to: Spark Plugs (303-07B Engine
Ignition - 2.3L EcoBoost (199kW/270PS), Removal and Installation).
For additional information, refer to: Spark Plugs (303-07C Engine
Ignition - 2.5L Duratec – Hybrid (121kW/164PS) (BG), Removal and
Installation).
-
Install the Dial Indicator Gauge with Holding Fixture so
the rounded tip of the dial indicator is on top of the camshaft lobe
and on the same plane as the valve tappet.
-
Rotate the crankshaft using a breaker bar and socket
attached to the crankshaft pulley retainer bolt. Rotate the crankshaft
until the base circle of the camshaft lobe is reached.
-
Zero the dial indicator. Continue to rotate the
crankshaft until the high-lift point of the camshaft lobe is in the
fully raised position (highest indicator reading).
-
To check the accuracy of the original dial indicator
reading, continue to rotate crankshaft until the base circle is reached.
The indicator reading should be zero. If zero reading is not obtained,
repeat Steps 2 through 5.
-
If the lift on any lobe is below specified service
limits, install a new camshaft and camshaft roller followers or valve
tappets.
-
Install the spark plugs.
For additional information, refer to:
Spark Plugs (303-07A Engine Ignition - 2.0L EcoBoost (177kW/240PS) –
MI4/2.0L EcoBoost (184kW/250PS) – MI4, Removal and Installation).
For additional information, refer to: Spark Plugs (303-07B Engine
Ignition - 2.3L EcoBoost (199kW/270PS), Removal and Installation).
For additional information, refer to: Spark Plugs (303-07C Engine
Ignition - 2.5L Duratec – Hybrid (121kW/164PS) (BG), Removal and
Installation).
Check
NOTE:
Refer to the appropriate Section 303-01 for the specification.
Measure the diameter of each intake and exhaust valve
stem at the points shown...
Other information:
DISASSEMBLY
Disconnect the high voltage inductor.
Remove the bolts and the high voltage inductor.
Remove the high voltage bolts.
Remove the bolts and the high voltage terminals.
ASSEMBLY
Install the high voltage terminals and the bolts.
Torque:
97 lb.in (..
WARNING: Do not attach two child
safety restraints to the same anchor. In a
crash, one anchor may not be strong
enough to hold two child safety restraint
attachments and may break, causing
serious injury or death.
WARNING: Depending on where you
secure a child restraint, and depending on
the child restraint design, you may block
access to certain seatbelt buckle
assemblies and LATCH lower..