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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 1040 (Engine Mechanical - QG18DE) >> Timing Chain >> Installation

Timing Chain: Installation

WARNING: This page is about a different car, the 2004 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
  • Use a scraper to completely remove all liquid gasket adhering to mounting surface. De-grease and clean mounting surfaces.
  • After installation, wipe off any protruding liquid gasket.
  1. Install timing chain and its related parts as follows.
    • Refer to figure for proper alignment positions for the sprockets, timing chain and their related parts.
    • Install each sprocket with its mating mark facing the engine front side.
    1. Install timing chain and crankshaft sprocket.
      • Make sure that the crankshaft key points straight up (No. 1 cylinder is at TDC).
      • Hook timing chain on front end of camshaft so that it will not fall off.
    2. Install timing chain slack guide and tension guide.
    3. Install the camshaft sprocket. Refer to "INSTALLATION ".
    4. Install the chain tensioner. Refer to "INSTALLATION ".
    5. Make sure that mating marks are properly aligned.
    6. Temporarily install the oil pump drive spacer, crankshaft pulley and crankshaft pulley bolt so that the crankshaft can be rotated.
    7. Rotate crankshaft clockwise several times to make sure it rotates normally.
    8. Remove components installed in step f.
    Fig 1: Installing Timing Chain And Its Related Parts
    G00774018Courtesy of NISSAN MOTOR CO., U.S.A.
  2. Install front oil seal to front cover.
    • Install it so that identification letters on oil seal will face toward front side of the engine.
    • Using an oil seal drift, press oil seal in until it is flush with end surface of mounting position.
    • Make sure that oil seal outer circumference is free from damage and burrs.
    Fig 2: Installing Front Oil Seal To Front Cover
    G00774019Courtesy of NISSAN MOTOR CO., U.S.A.
  3. Install front cover as follows.
    1. Install O-ring to cylinder block.
    2. Apply a continuous bead of sealant to the positions shown in the figure between the cylinder head gasket lower surface and the cylinder block.
      Fig 3: Installing Front Cover
      G00774020Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Apply a continuous bead of sealant to the back surface of the front cover as shown in the figure.
      CAUTION:
      • Do not apply sealant to groove A shown in figure.
      • Be especially careful of amount of sealant being applied in locations indicated with an "*" in the figure.
      Fig 4: Applying Continuous Bead Of Sealant Between Cylinder Head Gasket Lower Surface And Cylinder Block
      G00774021Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Apply sealant to the top surface of front cover lightly and evenly.
    5. Install O-ring to back surface to front cover.
    6. With socket oil pump inner rotor placed on crankshaft top surface (clearance between front cover top surface and cylinder head gasket lower surface is secured), move front cover close to cylinder block.
      Fig 5: Lifting Front Cover At Angle And Installing It To Mounting Position
      G00774022Courtesy of NISSAN MOTOR CO., U.S.A.
    7. Lift front cover at an angle and install it to mounting position so that front cover will come in contact with both cylinder head gasket lower surface and cylinder block front surface at the same time.
      CAUTION:
      • Be careful not to damage cylinder head gasket.
      • Make sure both sealing surfaces are contacted at the same time to ensure proper sealant adhesion and location.
    8. Install the front cover with bolts temporarily so that front cover will not move.
    9. Press fit the dowel pin into the cylinder block through the front cover.
      Fig 6: Installing Dowel Pin Into Cylinder Block
      G00774023Courtesy of NISSAN MOTOR CO., U.S.A.
    10. Tighten the front cover bolts temporarily.
      • A [M6 x 20 mm (0.79 in)], B [M6 x 40 mm (1.57 in)], C [M8 x 70 mm (2.76)], D [M6 x 73 mm (2.87 in)]
      • Bolt C also secures the power steering pump adjusting bar.
      • Bolt E [M6 x 12 mm (0.47 in)] is for installing power steering pump adjusting bar.
    11. Tighten the cylinder head auxiliary bolts (M6) temporarily.
    12. Tighten the front cover bolts and cylinder head auxiliary bolts to specified torque.
      Fig 7: Tightening Front Cover Bolts
      G00774024Courtesy of NISSAN MOTOR CO., U.S.A.
  4. Install oil pump drive spacer.
    • When installing, align with flat of oil pump rotor.
    • If they are not aligned, rotate inner rotor with a flat-bladed screwdriver to align them.
    CAUTION: Be careful not to damage oil seal lips.
    Fig 8: Installing Oil Pump Drive Spacer
    G00774025Courtesy of NISSAN MOTOR CO., U.S.A.
  5. Install the water pump. Refer to WATER PUMP .
  6. Install water pump pulley and idler pulley bracket assembly.
  7. Install crankshaft pulley.
    • When installing it, make sure that front oil seal lip is not inverted and garter spring is in position.
    • Secure crankshaft counterweight with the handle of a hammer, and tighten crankshaft pulley bolt.
  8. Install cylinder head front cover.
    Fig 9: Applying Silicone RTV Sealant To Cylinder Head Front Cover
    G00774026Courtesy of NISSAN MOTOR CO., U.S.A.
  9. Install engine front mounting bracket and engine front mounting. Refer to, "REMOVAL AND INSTALLATION ".
  10. Installation of the remaining components is in reverse order of removal.