IN-VEHICLE SERVICE
Valve Cover and Gasket
NOTE: The rocker covers installed on the 3.0L engine incorporate integral (built-in) gaskets which
should last the life of the vehicle. Be sure to adhere to the following steps when removing and
replacing rocker covers. Replacement gaskets are available if required.
Removal
1. Disconnect battery ground cable (14301) and set aside.
2. Disconnect the crankcase ventilation hose from the air cleaner outlet tube. Disconnect the wiring
connectors from the mass air flow (MAF) sensor, intake air temperature (IAT) sensor, and the
harness locator from the outlet tube. Loosen the clamps at the throttle body and air cleaner and
remove the outlet tube.
3. Remove air cleaner outlet tube.
4. Disconnect the canister purge hose from the canister purge valve at the LH frame rail and the locator
from the accelerator control bracket. Remove the accelerator control splash shield.
5. Disconnect the throttle cable (09A758A) and speed control cable (9A825) from the throttle body and
the locator at the top of the intake manifold. Remove the cable bracket retaining bolts and remove
bracket with cables attached. Position the bracket and cables out of the way.
6. Disconnect the wiring connectors from the coil connector, radio noise suppressor, the EVR and left
side spark plug wires from coil. Disconnect right side spark plug wires from the locators and wires
from the spark plugs. Disconnect the vacuum hose from the EVR and heater control tee. Remove the
brace from the coil bracket and the exhaust manifold. Remove the coil assembly.
7. Disconnect the right side valve cover harness locators. Disconnect the IAT harness locator from the
generator bracket. Remove the right side valve cover and gasket.
8. Disconnect the DPFE vacuum hoses and the wiring connector. Remove the EGR valve tube from the
valve and exhaust manifold.
9. Disconnect the vacuum hoses from the brake booster, EGR, and the engine vacuum harness from
upper intake and position the harness out of the way.
10. Disconnec the wiring connectors from the throttle position sensor (TPS) and idle air control (IAC).
Disconnect the 42-pin connector from the bracket at the rear of intake manifold. Remove the positive
crankcase ventilation (PCV) valve from the valve cover.
11. Remove the upper intake manifold and gasket. Tape the lower intake openings closed.
12. Disconnect the left side spark plug wire locators and wires from the spark plugs. Remove the left side
valve cover and gasket.
13. NOTE: Do not clean the valve cover gasket with solvent. Damage to the valve cover gasket
may occur.
Clean the valve covers and mating surfaces.
Section 03-01B: Engine, 3.0L V-6 1997 Aerostar, Ranger Workshop Manual
file://C:\TSO\tsocache\VDTOM_5368\SVK~us~en~file=SVK31B14.HTM~gen~ref.HTM
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