IN-VEHICLE SERVICE
Valve Tappet, Hydraulic
NOTE: Before replacing a tappet for noisy operation,
make sure the noise is not caused by improper
valve-to-rocker arm clearance or by worn rocker arms or push rods. Refer to Section 03-00 .
Removal
1. NOTE: On 3.0L Aerostar it is necessary to remove the engine (6007) from the vehicle to
perform this procedure. Refer to Engine Assembly, Aerostar , Removal and Installation, in this
section.
Disconnect ground cable at battery and set aside.
2. Drain engine cooling system.
3. Remove PCV closure hose from valve cover (6582) and air cleaner outlet tube.
4. Remove air cleaner outlet tube from throttle body (9E926) and engine air cleaner (ACL) (9600).
5. WARNING: COVER THE VALVE WITH A SHOP RAG TO PREVENT ACCIDENTAL FUEL
SPRAY INTO THE EYES.
Carefully relieve fuel pressure at fuel supply manifold fuel pressure relief valve as outlined in Section
03-04B .
6. Remove fuel tube clips. Disconnect fuel lines as outlined in Section 03-04B .
7. Mark location of vacuum lines and remove.
8. Disconnect electrical connectors of:
Intake air temperature sensor (IAT sensor) (12A697)
Idle air control valve (IAC valve) (9F715)
Engine coolant temperature sensor (ECT sensor) (12A648)
Camshaft position sensor (12A112)
Ignition coil
Radio ignition interference capacitor (18801)
Water temperature indicator sender unit (10884)
EGR pressure sensor, if equipped
EGR vacuum regulator control, if equipped
9. Disconnect upper radiator hose from thermostat housing. After loosening hose clamp, use a twisting
motion on hose to loosen from housing.
Section 03-01B: Engine, 3.0L V-6 1997 Aerostar, Ranger Workshop Manual
file://C:\TSO\tsocache\VDTOM_5368\SVK~us~en~file=SVK31B16.HTM~gen~ref.HTM
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