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1999 Pontiac Grand AM Revised Timing Chain, Sprocket, and Tensioner Replacement

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Filed Under (Pontiac) by admin on 25-08-2010

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Note: GM does not provide timing chain timing marks, or information to perform timing chain service without the special tools shown in this procedure. Tools Required: – - J 36800 Camshaft Sprocket Timing Alignment Pin J 39579 Camshaft Sprocket Wrench Important: ^ ^ Before remove the timing chain, read the entire procedure. The timing chain on the engine is not to be replaced with the timing chain from any other model year. The timing sprockets are different on the engine and the shape of the links matches the sprockets. Engine damage may result if the wrong timing chain is used. The timing chain and the crankshaft sprocket must be marked in order to insure reassembly with the same side facing out at the time of reassembly. ^ Caution: Refer to Battery Disconnect Caution in Service Precautions. 1. Disconnect the negative battery cable. 2. Remove the engine front cover. Refer to Engine Front Cover Replacement. 3. Rotate the crankshaft clockwise (as viewed from the front of the engine, normal rotation) until the camshaft sprocket timing dowel pin holes line up with the holes in the timing chain housing. 4. The crankshaft sprocket keyway should point upwards and line up with the centerline of the cylinder bores. This is the Timed position. 5. Remove the timing chain guides. 6. Raise and support the vehicle. Refer to Vehicle Lifting. 7. Ensure that all of the slack in the timing chain is above the tensioner assembly. 8. Remove the timing chain tensioner. 9. The timing chain must be disengaged from any wear grooves in the tensioner shoe in order to remove the shoe. Slide a screwdriver blade under the timing chain while pulling the shoe outward. Notice: Do NOT attempt to pry the sprocket off the camshaft or damage to the sprocket or chain housing could occur. 10. If difficulty is encountered in removing the timing chain tensioner shoe, use the following procedure in order to remove the intake camshaft sprocket: 10.1. 10.2. 10.3. 10.4. Lower the vehicle. Hold the intake camshaft sprocket with the J 39579 and remove the sprocket bolt and washer. Remove the washer from the bolt and rethread the bolt back into the camshaft by hand (the bolt provides a surface to push against). Remove the intake camshaft sprocket. Use a three-jaw puller in the three relief holes in the sprocket.

1998 Ford Mustang Camshaft Timing Chains and Tensioners Removal Installation

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Filed Under (Ford) by admin on 03-04-2011

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1. CAUTION: At no time, when the timing chain(s) are removed and the cylinder heads (6049) are installed, may the crankshaft (6303) and camshafts (6250) be rotated. Failure to follow these directions will result in valve and/or piston damage. NOTE: Because this is not a free-wheeling engine, if it has jumped time, there will be damage to the valves and pistons (6108) and will require the removal of the cylinder heads . The camshaft sprockets (6256) should only be disassembled from the camshafts when one of the components is to be replaced. Remove valve covers (6582) , oil pan (6675) and engine front cover (6019) as described. 2. Remove crankshaft position sensor pulse wheel. 3. Rotate engine to No. 1 top dead center (TDC). 4. NOTE: Cam Positioning Tool Adapters 303-413 (T92P-6256-A) and Cam Positioning Tool 303-380 (T91P-6256-A) MUST be installed on camshaft to prevent camshaft from rotating. Install Cam Positioning Tool Adapters 303-413 (T92P-6256-A) and Cam Positioning Tool 303-380 (T91P-6256-A) on flats of camshafts . 5. Remove two bolts retaining RH timing chain tensioner (6L266) to cylinder head and remove timing chain tensioner . 6. Remove RH timing chain tensioner arm (6L253) . 7. Remove two bolts retaining RH timing chain guide (6K297) to cylinder head and remove timing chain guide . 8. Remove RH timing chain from camshaft sprocket and crankshaft sprockets (6306) . 9. NOTE: Cam Positioning Tool Adapters 303-413 (T92P-6256-A) and Cam Positioning Tool 303-380 (T91P-6256-A) MUST be installed on camshaft to prevent camshaft from rotating. Remove two bolts retaining LH timing chain tensioner to cylinder head and remove timing chain tensioner . 10. Remove LH timing chain tensioner arm . 11. Remove two bolts retaining LH timing chain guide to cylinder head and remove timing chain guide . 12. Remove LH timing chain from camshaft sprocket and crankshaft sprocket . 13. If necessary, remove camshaft sprockets and crankshaft sprockets as described. 14. CAUTION: Do not rotate crankshaft and/or camshafts . Engine damage may occur. Inspect the plastic running face on timing chain tensioner arms and timing chain guides . If worn or damaged, remove and clean oil pan and oil pump screen cover and tube (6622) . Installation

1997 Ford Crown Victoria Camshaft Timing Chains and Tensioners Removal

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Filed Under (Ford) by admin on 08-03-2011

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1. CAUTION: At no time, when the timing chain(s) are removed and the cylinder heads (6049) are installed, may the crankshaft (6303) and/or camshafts (6250) be rotated. Failure to follow these directions will result in valve and/or piston damage. NOTE: Because this is not a free-wheeling engine, and it jumps time, there will be damage to the valves and/or pistons (6108) and will require the removal of the cylinder heads. The camshaft sprockets (6256) should only be disassembled from the camshafts when one of the components is to be replaced. Remove valve covers (6582) and engine front cover (6019) as described. 2. Remove crankshaft position sensor pulse wheel. 3. Rotate engine to No. 1 top dead center (TDC). 4. NOTE: This will prevent accidental rotation of the camshafts. NOTE: Cam Positioning Tool Adapters T92P-6256-A and Cam Positioning Tool T91P-6256-A must be installed on camshaft to prevent camshaft from rotating. Install Cam Positioning Tool Adapters T92P-6256-A and Cam Positioning Tool T91P-6256-A on flats of camshaft. 5. Remove two bolts retaining RH timing chain tensioner (6L266) to cylinder head and remove timing chain tensioner. 6. Remove RH timing chain tensioner arm (6L253). 7. Remove two bolts retaining RH timing chain guide (6K297) to cylinder head and remove timing chain guide. 8. Remove RH timing chain from camshaft sprocket and crankshaft sprocket (6306). 9. NOTE: Cam Positioning Tool Adapters T92P-6256-A and Cam Positioning Tool T91P-6256-A must be installed on camshaft to prevent camshaft from rotating. Remove two bolts retaining LH timing chain tensioner to cylinder head and remove timing chain tensioner. 10. Remove LH timing chain tensioner arm. 11. Remove two bolts retaining LH timing chain guide to cylinder head and remove timing chain guide. 12. Remove LH timing chain from camshaft sprocket and crankshaft sprocket. 13. If necessary, remove camshaft sprockets and crankshaft sprockets as described. 14. CAUTION: Do not rotate crankshaft and/or camshafts or possible engine damage may occur. Inspect the plastic running face on timing chain tensioner arms and timing chain guides. If worn or damaged, remove and clean oil pan (6675) and oil pump screen cover and tube (6622).

1997 Ford F-150/250 Timing Chains Removal

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Filed Under (Ford) by admin on 05-02-2011

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1. Remove the engine front cover; refer to the procedure in this section. 2. Remove the (A) crankshaft sensor ring from the (B)crankshaft (6303). 3. On WEP engines, use the (A) Camshaft Positioning Tool to position the (B) camshaft. 4. on REP engines, rotate the crankshaft until both camshaft keyways are 90° from the cam cover surface. On REP and WEP engines, make sure the copper links line up with the dots on the camshaft sprockets. 5. On REP equipped engines, install the (A) Cam Positioning Tool and the Camshaft Positioning Tool Adapters on the (B) camshaft. 6. On WEP engines, install the (A) Camshaft Holding Tool on the (B) camshaft. 7. Remove the (A) LH timing chain tensioner bolts and the (B) LH timing chain tensioner. 8. Remove the (A) RH timing chain tensioner bolts and the (B) RH timing chain tensioner. 9. Remove the LH and RH timing chain tensioner guides from the dowel pins. 10. CAUTION: At no time, when the timing chains are removed and the cylinder heads are installed may the crankshaft or camshaft be rotated. Severe piston and valve damage will occur. Remove the RH and LH timing chains and crankshaft sprockets. 1. Lift RH timing chain off of the camshaft sprocket and slide the timing chain and crankshaft sprocket off of the crankshaft. 2. Lift the LH timing chain off the camshaft sprocket and slide the timing chain and the crankshaft sprocket off of the crankshaft. 11. On REP engines, remove the chain guides. 1. Remove the LH timing chain guide bolts. 2. Remove the LH timing chain guide. 3. Remove the RH timing chain guide bolts. 4. Remove the RH timing chain guide.

1996 Nissan Altima GLE TIMING CHAIN Removal

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Filed Under (Nissan) by admin on 28-11-2010

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1. Release fuel pressure. See FUEL PRESSURE RELEASE . Drain coolant from radiator and cylinder block. Drain engine oil. Disconnect all necessary coolant hoses, electrical connectors, vacuum hoses, fuel lines and control cables. 2. Remove front exhaust tube. Remove intake manifold collector supports, and intake manifold. Remove exhaust manifold with catalytic converter. Remove air injection valve pipe. Remove intake air duct. Remove radiator fan and shroud. Remove injectors and fuel rail as an assembly. Remove distributor cap and spark plugs. 3. Set cylinder No. 1 at TDC of compression stroke, ensuring marks on crankshaft pulley and front cover align, and distributor rotor points to spark plug wire No. 1 on cap. Remove cylinder head cover. Remove distributor. NOTE: It is not necessary to install a stopper to prevent inner or outer timing chains from disengaging sprockets. 4. Prevent camshafts from turning, and remove camshaft sprocket bolts. Remove camshaft sprocket. See Fig. 13 . Mark and remove camshaft bearing caps in reverse order of installation. See Fig. 16 . Remove camshafts. 5. Loosen cylinder head bolts in 2 or 3 steps, in reverse order of tightening sequence. See Fig. 11 . Remove camshaft sprocket cover. Remove outer (upper) chain tensioner and guide. Remove outer timing chain. Remove idler sprocket bolt. Remove cylinder head. 6. Remove oil pan and oil strainer. See OIL PAN. Remove accessory drive belts. Remove A/C compressor idler pulley (if equipped). Remove crankshaft pulley. Remove front cover. Remove chain tensioner, tensioner arm and chain guides. Remove inner (lower) timing chain and idler sprocket. Remove oil pump drive spacer and crankshaft sprocket. Inspection 1. Inspect chain roller links. Replace 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 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