FORD:
1997-2000 EXPLORER, MOUNTAINEER
ISSUE:
A "knocking" noise at start up for up to 2 minutes from the left hand front chain cassette area may occur on some vehicles. After engine shutdown, the tensioner oil supply gallery empties. The noise may be due to air entering the left hand tensioner when the engine is restarted.
ACTION:
Replace the left hand camshaft tensioner with a revised Tensioner Kit. Refer to the Instruction Sheet within the Tensioner Kit for service procedure details.
WARNING:
THE XU2Z-6K254-AA TENSIONER KIT IS FOR INSTALLATION ON THE LEFT SIDE OF THE ENGINE ONLY. INSTALLATION OF THIS KIT ON THE RIGHT SIDE OF THE ENGINE MAY RESULT IN ENGINE FAILURE. IF A TENSIONER IS NEEDED FOR THE RIGHT SIDE OF THE ENGINE, USE KIT XU3Z-6K254-BA.
PART NUMBER
PART NAME
XU2Z-6K254-AA
Tensioner Kit - Left Side
XU3Z-6K254-BA
Tensioner Kit - Right Side
SECTION 303-01B: Engine — 4.0L SOHC
1998 Explorer/Mountaineer Workshop Manual
IN-VEHICLE REPAIR
Timing Drive Components —LH Hydraulic Chain Tensioner
Removal and Installation
- Remove the upper intake manifold. For additional information, refer to Intake Manifold—Upper in this section.
Intake Manifold —Upper
Removal
- Disconnect the battery ground cable (14301). For additional information, refer to Section 414-01 .
- Remove the air cleaner outlet tube (9B659); refer to Section 303-12 .
- Remove the bolts and the accelerator control splash shield.
- Remove the accelerator cable (9A758) and speed control actuator cable (9A825).
- Pull up on speed control actuator cable to remove.
- Rotate the throttle body cam and remove the accelerator cable from the cam.
- Remove the screws, the accelerator cable and speed control actuator cable.
- Disconnect the RH upper intake manifold vacuum connection.
- Disconnect the idle air control (IAC) valve electrical connector.
- Disconnect the TP sensor electrical connector.
- Disconnect the engine vacuum regulator (EVR) and the variable induction system (VIS) solenoid electrical connections.
- Disconnect the crankcase ventilation hose (6853).
- Disconnect the power brake booster vacuum line.
- Remove the 12 bolts.
-
NOTE: Inspect the O-rings and replace as necessary.
Disconnect the LH fuel vapor management valve (VMV) hose.
-
NOTE: Inspect the O-rings and replace as necessary.
Disconnect the RH VMV hose and remove the upper intake manifold.
- Remove the thermostat housing. For additional information, refer to Section 303-03 .
- Remove the LH camshaft tensioner.
- If using a new washer, tighten to 44 Nm (32 lb-ft).
- If using the old washer, tighten to 67 Nm (49 lb-ft).
- Remove the pipe plug, and the oil volume reduction plug.
-
NOTE: Be sure to install the new oil volume reduction plug supplied with the hydraulic chain tensioner.
To install, reverse the removal procedure.
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