Having problems with your 2002 Nissan Altima ?

Im trying to replace the timing chain on a 2002 nissa altimaa but i cann't get the timing chain cover of does anyone have a diagram plz

Posted / edited by AnonymousUser on : 19-03-2018

Answers :

Nissan Car Altima & Sentra 1999-06

Timing Chain Cover & Seal--Removal & Installation

2.4L \015\012Engine
  1. \015\012Before servicing the vehicle, refer to the Precautions section.\015\012
  2. \015\012
  3. \015\012Drain the cooling system.\015\012
  4. \015\012
  5. \015\012Drain the engine oil.\015\012
  6. \015\012
  7. \015\012Remove or disconnect the following:\015\012
    \015\012Negative battery cable\015\012\015\012Spark plug wires and set the No. 1 piston at the Top Dead Center \015\012(TDC) of the compression stroke\015\012Engine undercover\015\012Vacuum hoses, fuel hoses, wires, harness and connectors\015\012Drive belts\015\012Power steering reservoir\015\012Alternator and bracket, the upper radiator hose, the air duct and \015\012the front exhaust tube\015\012Intake manifold collector supports, intake manifold collector and \015\012the exhaust manifold\015\012Distributor\015\012\015\012\015\012\015\012
  8. \015\012
  9. \015\012Using a block of wood, set a transmission jack under the aluminum \015\012oil pan and remove the front engine mounting.\015\012
    \015\012Rocker cover. Remove the rocker cover bolts in the proper \015\012sequence.\015\012\015\012Camshaft sprockets \015\012\015\012\015\012
\015\012\015\012NOTE\015\012\015\012The stoppers on camshaft covers prevent the upper timing chain \015\012from disengaging from the idle sprocket.\015\012\015\012
Cam bearing caps in sequence\015\012\015\012Camshafts. The camshaft brackets must be loosened in reverse order\015\012 of tightening to prevent damage to the camshaft. \015\012
\015\012\015\012NOTECylinder head bolts in the reverse order of installation\015\012\015\012
\015\012\015\012NOTE\015\012\015\012A warped or cracked cylinder head could result from loosening in \015\012incorrect order. The cylinder head bolts should be loosened in 2 or 3 \015\012steps.\015\012\015\012Cam sprocket cover\015\012\015\012Upper chain tensioner and upper chain guides\015\012Upper timing chain\015\012Idler sprocket bolt\015\012Cylinder head and the intake manifold\015\012Cylinder head gasket. The lower timing chain will not be \015\012disengaged from crankshaft sprocket.\015\012\015\012
\015\012\015\012NOTE\015\012\015\012The cast portion of the front cover is located on the lower side \015\012of the crankshaft sprocket, so the lower timing chain need not be \015\012disengaged from idler sprocket.\015\012\015\012
\015\012\015\012\015\012Steel oil pan bolts in the reverse sequence of the tightening \015\012procedure\015\012\015\012\015\012\015\012
  1. \015\012Install a seal cutter between the steel oil pan and the aluminum \015\012oil pan.\015\012
  2. \015\012
  3. \015\012Tapping the cutter with a hammer, slide it around the entire edge \015\012of the oil pan. Take care not to damage the aluminum oil pan.\015\012
  4. \015\012
  5. \015\012Remove or disconnect the following:\015\012
    \015\012Steel oil pan\015\012\015\012Baffle plate, oil strainer and the front tube\015\012\015\012\015\012\015\012
  6. \015\012
  7. \015\012Support the transaxle with a jack and the engine with a engine \015\012hoist.\015\012
    \015\012Front suspension member\015\012\015\012A/C compressor gussets\015\012Rear cover plate\015\012Aluminum oil pan retaining bolts in sequence\015\012\015\012\015\012\015\012
  8. \015\012
  9. \015\012Insert a seal cutter between the oil pan and the cylinder block.\015\012
  10. \015\012
  11. \015\012Tapping the cutter with a hammer, slide it around the entire edge \015\012of the oil pan. Take care not to damage the aluminum oil pan.\015\012
    \015\012Oil pan from the engine\015\012\015\012Crankshaft pulley\015\012Front timing chain cover\015\012Oil pump drive spacer\015\012Lower timing chain tensioner, tensioner arm and lower timing chain\015\012 guide\015\012Lower timing chain and idler sprocket\015\012\015\012\015\012
\015\012\015\012\015\012To install:\015\012
  1. \015\012Install or connect the following:\015\012
    \015\012Crankshaft sprocket and oil pump drive spacer\015\012\015\012Idler sprocket and lower timing chain \015\012\015\012\015\012
  2. \015\012
  3. \015\012Set the lower timing chain on the sprockets, aligning the mating \015\012marks. The mating marks on the timing chain assembly will be silver.\015\012
    \015\012Chain tension arm and chain guide\015\012\015\012Lower timing chain tensioner\015\012\015\012\015\012\015\012
  4. \015\012
  5. \015\012Apply a continuous bead of liquid gasket to the front cover and \015\012install the front cover. Install a new oil seal.\015\012
    \015\012Crankshaft pulley and torque tighten bolt to 105-112 ft. lbs. \015\012(142-152 Nm)\015\012\015\012\015\012\015\012
  6. \015\012
  7. \015\012Carefully scrape the old gasket material away from the pan and \015\012cylinder block mounting surfaces, then apply a continuous 3.5-4.5mm wide\015\012 bead of liquid gasket around the oil pan and the cylinder block.\015\012
    \015\012Aluminum oil pan and torque the bolts, in sequence, to 13 ft. lbs.\015\012 (17.5 Nm)\015\012\015\012Baffle plate, oil strainer and the front tube\015\012Steel oil pan and torque the bolts, in sequence, to 61 inch lbs. \015\012(7 Nm)\015\012Rear cover plate\015\012A/C compressor gussets\015\012Front suspension member\015\012Front engine mounting and remove the engine hoist and transaxle \015\012support\015\012New cylinder head gasket\015\012Cylinder head and temporarily tighten the cylinder head bolts when\015\012 installing the front cover. This is necessary to avoid damaging the \015\012cylinder head gasket. Be sure to install washers between the bolts and \015\012cylinder head.\015\012Upper timing chain, chain tensioner and chain guide \015\012\015\012\015\012
  8. \015\012
  9. \015\012Set the upper timing chain on idler sprockets, aligning the mating\015\012 marks.\015\012
    \015\012Cam sprocket cover. Apply a continuous bead of liquid gasket to \015\012front cover. Be careful not to damage the cylinder head gasket. Be \015\012careful that the upper timing chain does not slip or jump when \015\012installing cam sprocket cover. \015\012\015\012\015\012
  10. \015\012
  11. \015\012Tighten cylinder head bolts.\015\012
    \015\012Camshafts and camshaft bearing caps\015\012\015\012Camshaft sprockets, then torque the sprocket bolts to 123-130 ft. \015\012lbs. (167-176 Nm). Install the chain guide between both camshaft \015\012sprockets. The alignment marks on the upper portion of the timing chain \015\012should now be aligned.\015\012Rocker cover\015\012Distributor\015\012Intake manifold collector supports and collector\015\012Exhaust manifold\015\012Alternator and bracket\015\012Upper radiator hose\015\012Air duct assembly\015\012Front exhaust tube\015\012Power steering reservoir\015\012Drive belts\015\012Vacuum hoses and fuel lines\015\012Engine under cover\015\012Spark plug wires\015\012Negative battery cable\015\012\015\012\015\012\015\012
  12. \015\012
  13. \015\012Fill the cooling system.\015\012
  14. \015\012
  15. \015\012Fill the engine with clean oil.\015\012
  16. \015\012
  17. \015\012Start the vehicle, check for leaks and repair if necessary.\015\012
Repair Help & Product Troubleshooting for 2002 Nissan Altima

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