2003 nissan altima 2.4 head bolts torque
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Filed Under (Ford) by admin on 05-11-2010
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:
Filed Under (Nissan) by admin on 29-11-2010
Remove outer (upper) timing chain. See TIMING CHAINS . Remove idler sprocket and shaft. Prevent camshafts from turning, and remove camshaft sprocket bolts. Remove camshaft sprocket. Mark and remove camshaft bearing caps in reverse order of installation. See Fig. 30 . Remove camshafts. 2. Loosen cylinder head bolts in 2 or 3 steps, in reverse order of tightening sequence. See Fig. 31 . Remove camshaft sprocket cover. Remove outer (upper) chain tensioner and guide. Remove outer timing chain. Remove idler sprocket bolt. Remove cylinder head. Inspection (240SX, Altima & Frontier) 1. Inspect timing chain roller links. Replace timing chain if roller links are cracked or worn. Inspect cylinder head and cylinder block mating surfaces for warpage. If warpage exceeds specification, machine cylinder head. See CYLINDER HEAD (EXCEPT 1997 PICKUP) table under ENGINE SPECIFICATIONS. 2. If machining reduces cylinder head height to less than specification, replace cylinder head. After machining, rotate camshaft by hand. Replace cylinder head if camshaft does not rotate freely. Installation (240SX, Altima & Frontier) 1. Install cylinder head and NEW gasket. Tighten cylinder head bolts in sequence shown. See Fig. 31 . See TORQUE SPECIFICATIONS . 2. Install upper timing chain. See TIMING CHAINS . Tighten all fasteners to specification. See TORQUE SPECIFICATIONS
Filed Under (Toyota) by admin on 05-08-2010
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.
Filed Under (Cadillac) by admin on 12-06-2010
Cylinder Head Installation – Left Important: Use new cylinder head bolts. The required tightening method stretches the bolts, therefore the cylinder head bolts are not reusable. Cylinder Head Installation – Right Important: Use new cylinder head bolts. The required tightening method stretches the bolts, therefore the cylinder head bolts are not reusable. Installing the new cylinder head bolts. Intake Manifold Flange Bolts 20 Nm (15 ft. lbs.) Throttle Body Bolt 8 Nm (71 inch lbs.)
Filed Under (Nissan) by admin on 27-11-2010
For 2003 and 2004 Applied Vehicles: When you perform Procedure C (ECM Reprogramming), go to NTB06-051a for reprogramming information. You will still need to perform all other parts of this bulletin on 2003 and 2004 Applied Vehicles. INTRODUCTION Nissan has determined that some 2002-2003 model year Altima and 2002-2004 model year Sentra vehicles equipped with the 2.5 liter engine have defects that relate to motor vehicle safety. For 2002-2003 model year Altimas, there is a possibility that the exhaust pipe hanger pin may catch debris from the road that could be ignited by contact with the catalytic converter and cause a fire. In addition, for 2002-2003 model year Altimas and 2002-2004 model year Sentras, there is a possibility that certain engine operating conditions may cause damage to the pre-catalyst. Material from inside a damaged pre-catalyst could enter the engine and result in increased oil consumption. If the engine oil level is not checked on a periodic basis and drops below the low level, and the driver continues to operate the vehicle ignoring noticeable engine noise, engine damage may occur which could result in a fire.