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ENGINE – 5.0L – NEW TORQUE-TO-YIELD CYLINDER HEAD BOLT KIT AND NEW PROCEDURES – SERVICE TIP FORD: 1988 THUNDERBIRD 1988-91 CROWN VICTORIA 1988-95 MUSTANG 1991-93 THUNDERBIRD LINCOLN-MERCURY: 1988 COUGAR 1988-90 TOWN CAR 1988-91 GRAND MARQUIS 1988-92 MARK VII 1991-93 COUGAR LIGHT TRUCK: 1988-95 BRONCO, ECONOLINE, F-150-350 SERIES ISSUE: In 1992, the type of cylinder head bolts used on the 5.0L engines was changed to the torque-to-yield bolts. Depending on the build date of the engine, the 1992 model year engines came with either torque-to-yield bolts or standard torque, not a combination of the two (2). In 1993, torque-to-yield bolts were used on all 5.OL engines. ACTION: Refer to the following for proper bolt identification, usage and torque specifications. ^ The two (2) types of bolts being used are physically different. Refer to Figure 1. ^ The standard torque bolt is a non-flanged hex head bolt. ^ The torque-to-yield bolt is a flanged head bolt. ^ The two (2) types of bolts may be used on any of the 5.0L engines. ^ The bolts must be all the same style on each cylinder head. CAUTION: DO NOT USE BOTH TYPES OF CYLINDER HEAD BOLTS ON ONE (1) CYLINDER HEAD. EACH CYLINDER HEAD MUST HAVE ALL OF ONE (1) TYPE OF RETAINING BOLT: STANDARD TORQUE OR TORQUE-TO-YIELD. The torque-to-yield cylinder head bolts will be available only in a packaged kit (F3ZZ-6065-E). The kit will contain the following: Five (5) 7/16-14×3.94 Bolts Five (5) 7/16-14×2.49 Bolts One (1) 3/8-16×7/16-3.93 Stud One (1) Instruction Sheet (I.S. # 6605) Some applications use a various quantity of studs for fastening of items to the cylinder head. TORQUE SPECIFICATIONS FOR THE NON-FLANGED STANDARD HEX HEAD BOLTS, TIGHTEN IN TWO (2) STEPS AS FOLLOWS:

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Application Axle Housing Mounting Bolt Step 1 Step 2 Camshaft Idler Pulley Bolt Camshaft Sprocket Bolt Camshaft Timing Chain Tensioner Bolt Common Chamber Duct Bolt Connecting Rod Nut Coolant Manifold Bolt Crankshaft Pulley Bolt Cylinder Head Bolt (1) M8 M11 DIS Module Assembly Bolt Engine Hanger Bolt Nut Engine-To-Transmission Bolt EGR Valve Bolt (Manifold Side) Exhaust Manifold Bolt Nut Exhaust Pipe Bolt & Nut Stud Nut Fan Pulley Bolt Flywheel Bolt Front Plate Bolt (Timing Belt) Heater Pipe Bolt Idler Arm Retaining Bolt Lock Plate Bolt Lower Intake Manifold Bolt Main Bearing Cap Bolt (2) Main Bearing Cap Side Bolt (2) Mount-To-Chassis Bolt Oil Cooler Bolt

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1. Install cylinder head. A. Place cylinder head on cylinder block. (a) Place a new cylinder head gasket on the cylinder block. CAUTION: Be careful of the installation direction. (b) Place the cylinder head on the cylinder head gasket. B. Install cylinder head bolts. NOTE: The cylinder head bolts are tightened in 2 progressive steps (steps (b) and (d)). If any cylinder head bolt is broken or deformed, replace it. (a) Apply a light coat of engine oil on the threads and under the heads of the cylinder head bolts. Cylinder Head Installation Install and uniformly tighten the 10 cylinder head bolts and plate washers in several passes, in the sequence shown. Torque: 49 Nm (36 ft. lbs.) If any one of the cylinder head bolts does not meet the torque specification, replace the cylinder head bolt. (c) Mark the front of the cylinder head bolt head with paint. (d) Retighten the cylinder head bolts 90° in the numerical order shown. (e) Check that the painted mark is now at a 90° angle to the front. Install the 2 bolts holding the water bypass pipe to the cylinder head. Torque to 19 Nm (14 ft. lbs.) (g) Connect the camshaft position sensor connector. 2. Install spark plug tubes. (a) Clean the cylinder head tube holes of any residual adhesive, oil or foreign particles. Remove any oil with kerosene or gasoline. (b) Screw the threads of the spark plug tube coated with adhesive into the cylinder head.

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Connecting Rod Bolt Crankshaft Pulley Bolt Cylinder Head Bolt (3) Step 1 Step 2 Step 3 (Verify Torque) Diff. Pinion Nose Bracket-To-Adapter Bolt (Dakota 4WD) Differential Pinion Nose Bracket-To-Bellhousing Bolt (Dakota 4WD) Engine Mount Bracket-To-Frame Rail Bolt (Dakota 2WD) Engine Mount Through-Bolt Dakota 2WD Dakota 4WD Engine Mount-To-Cylinder Block Bolt (Dakota) Engine Mount-To-Frame Bracket Bolt/Nut Ram Pickup Ram Van/Wagon Exhaust Manifold Bolt & Nut Flywheel/Flexplate-To-Crankshaft Bolt Front Cover Bolt Main Bearing Cap Bolt Oil Filter Adapter Stud Oil Pan Bolt Oil Pump Bolt Rocker Arm Bolt Shift Motor Bolt (Dakota 4WD)

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Note: Components depicted here correspond to cylinder bank 1. They are different only as a mirror image of components for cylinder bank 2. 1 – Connecting hose On vehicles with engine code BWF To crankcase ventilation valve Ensure seated tightly 2 – Sealing sleeve On vehicles with engine code BWF Replace if damaged Ensure seated tightly 3 – Bracket On vehicles with engine code BWF For intake hose between air filter and intake manifold flap 4 – Acoustic cover For vehicles with engine code BWF 5 – Cylinder head cover On vehicles with engine code BWF Always clean sealing surfaces of cylinder head cover with a clean cloth before setting in place Replace seal together with cylinder head cover if damaged or leaking Observe tightening sequence of bolts 6 – Acoustic cover For vehicles with engine code BKW 7 – Cylinder head cover For vehicles with engine code BKW Always clean sealing surfaces of cylinder head cover with a clean cloth before setting in place Replace seal together with cylinder head cover if damaged or leaking Observe tightening sequence of bolts 8 – 20 Nm Between control housing and cylinder head 9 – Cylinder head gasket Replace Install new seal of the same strength Imprint of replacement part numbers – A – must be readable After replacing replace entire amount of coolant 10 – Cylinder head Removing and installing 11 – Cylinder head bolt Replace Observe sequence for loosening and tightening head, removing and installing 12 – Sealing sleeve For vehicles with engine code BKW Replace if damaged Check for secure seating 13 – Connection piece For vehicles with engine code BKW To crankcase ventilation valve Check for secure seating Cylinder heads, removing and installing