Question about 2002 Nissan Altima
Nissan Car Altima & Sentra 1999-06
Timing Chain Cover & Seal--Removal & Installation
Negative battery cable Spark plug wires and set the No. 1 piston at the Top Dead Center (TDC) of the compression stroke Engine undercover Vacuum hoses, fuel hoses, wires, harness and connectors Drive belts Power steering reservoir Alternator and bracket, the upper radiator hose, the air duct and the front exhaust tube Intake manifold collector supports, intake manifold collector and the exhaust manifold Distributor
Rocker cover. Remove the rocker cover bolts in the proper sequence. Camshaft sprockets
NOTE The stoppers on camshaft covers prevent the upper timing chain from disengaging from the idle sprocket.
Cam bearing caps in sequence Camshafts. The camshaft brackets must be loosened in reverse order of tightening to prevent damage to the camshaft.
NOTECylinder head bolts in the reverse order of installation
NOTE A warped or cracked cylinder head could result from loosening in incorrect order. The cylinder head bolts should be loosened in 2 or 3 steps. Cam sprocket cover Upper chain tensioner and upper chain guides Upper timing chain Idler sprocket bolt Cylinder head and the intake manifold Cylinder head gasket. The lower timing chain will not be disengaged from crankshaft sprocket.
NOTE The cast portion of the front cover is located on the lower side of the crankshaft sprocket, so the lower timing chain need not be disengaged from idler sprocket.
Steel oil pan bolts in the reverse sequence of the tightening procedure
Steel oil pan Baffle plate, oil strainer and the front tube
Front suspension member A/C compressor gussets Rear cover plate Aluminum oil pan retaining bolts in sequence
Oil pan from the engine Crankshaft pulley Front timing chain cover Oil pump drive spacer Lower timing chain tensioner, tensioner arm and lower timing chain guide Lower timing chain and idler sprocket
Crankshaft sprocket and oil pump drive spacer Idler sprocket and lower timing chain
Chain tension arm and chain guide Lower timing chain tensioner
Crankshaft pulley and torque tighten bolt to 105-112 ft. lbs. (142-152 Nm)
Aluminum oil pan and torque the bolts, in sequence, to 13 ft. lbs. (17.5 Nm) Baffle plate, oil strainer and the front tube Steel oil pan and torque the bolts, in sequence, to 61 inch lbs. (7 Nm) Rear cover plate A/C compressor gussets Front suspension member Front engine mounting and remove the engine hoist and transaxle support New cylinder head gasket Cylinder head and temporarily tighten the cylinder head bolts when installing the front cover. This is necessary to avoid damaging the cylinder head gasket. Be sure to install washers between the bolts and cylinder head. Upper timing chain, chain tensioner and chain guide
Cam sprocket cover. Apply a continuous bead of liquid gasket to front cover. Be careful not to damage the cylinder head gasket. Be careful that the upper timing chain does not slip or jump when installing cam sprocket cover.
Camshafts and camshaft bearing caps Camshaft sprockets, then torque the sprocket bolts to 123-130 ft. lbs. (167-176 Nm). Install the chain guide between both camshaft sprockets. The alignment marks on the upper portion of the timing chain should now be aligned. Rocker cover Distributor Intake manifold collector supports and collector Exhaust manifold Alternator and bracket Upper radiator hose Air duct assembly Front exhaust tube Power steering reservoir Drive belts Vacuum hoses and fuel lines Engine under cover Spark plug wires Negative battery cable
Posted on Jul 31, 2010
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Posted on Jan 02, 2017
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