LEMON Manuals: Even more car manuals for everyone
Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 412 (Engine Mechanical - 2.5L) >> Timing Chain >> Removal and Installation >> Installation

Removal and Installation: Installation

WARNING: This page is about a different car, the 2003 Nissan Altima. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • There may be two color variations of the link marks (link colors) on the timing chain.
  • There are 26 links between the gold/yellow mating marks on the timing chain; and 64 links between the camshaft sprocket gold/yellow link and the crankshaft sprocket orange/blue link, on the timing chain side without the tensioner.
  1. Make sure the crankshaft key points straight up.
  2. Install the balancer unit and tighten the mounting bolts in the numerical order shown with the following procedure:
    CAUTION:
    1. Apply new engine oil to threads and seating surfaces of mounting bolts.
    2. Tighten them to 45.2 - 51.0 N.m (4.6 - 5.2 kg-m, 34 - 37 ft-lb). See Figure.
    3. Turn them another 90° - 95° degrees (Target: 90° degrees).
    4. Fully loosen in the reverse order of tightening to 0 N.m (0 kg-m, 0 ft-lb).
    5. Tighten them to 45.2 - 51.0 N.m (4.6 - 5.2 kg-m, 34 - 37 ft-lb).
    6. Turn them another 90° - 95° degrees (Target: 90° degrees).
      CAUTION:
      • Check tightening angle with an angle wrench or a protractor. Do not make judgment by visual check alone.
      Fig 1: Check tightening angle
      G02110361Courtesy of NISSAN MOTOR CO., U.S.A.
  3. Install the crankshaft sprocket and timing chain for the balancer unit.
    • Make sure that the crankshaft sprocket is positioned with mating marks on the block and sprocket meeting at the top.
    • Install it by lining up mating marks on each sprocket and timing chain.
    Fig 2: View Of Mating Marks
    G02110362Courtesy of NISSAN MOTOR CO., U.S.A.
  4. Install timing chain tensioner for balancer unit.
    NOTE: Chain guide and tensioner move freely with the caulking pin as the axle. Therefore, bolt hole position of the three points could be changed during removal. If points change, temporarily fix the two mounting bolts on the chain guide and move the tensioner to match the bolt holes.
    Fig 3: Install Timing Chain Tensioner For Balancer Unit
    G02110363Courtesy of NISSAN MOTOR CO., U.S.A.
    • Be careful not to let mating marks of each sprocket and timing chain slip.
    • After installation, make sure the mating marks have not slipped, then remove stopper pin and release tensioner.
  5. Install timing chain and related parts.
    Fig 4: Installing Timing Chain And Related Parts
    G02110364Courtesy of NISSAN MOTOR CO., U.S.A.
    • Install by lining up mating marks on each sprocket and timing chain as shown.
    NOTE: Before installing chain tensioner, it is possible to change the position of mating mark on timing chain for that of each sprocket for alignment.
    CAUTION: For the above reason, after the mating marks are aligned, keep them aligned by holding them with a hand.
    • Before and after installing chain tensioner, check again to make sure that mating marks have not slipped.
    • After installing chain tensioner, remove stopper pin, and make sure the tensioner moves freely.
    • To avoid skipped teeth, do not move crankshaft and camshaft until front cover is installed.
  6. Install front oil seal to front cover.
    • Using a drift of 56 mm (2.20 in) diameter, press oil seal in until it is flush with front end surface of front cover.
      CAUTION:
      • Be careful not to cause damage to circumference of oil seal.
      Fig 5: Installing Front Cover Seal
      G02110365Courtesy of NISSAN MOTOR CO., U.S.A.
  7. Install front cover with the following procedure:
    1. Install O-rings to cylinder head and cylinder block.
    2. Apply Genuine RTV Silicone Sealant or equivalent, to positions specified in the figure. Refer to RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS .
      Fig 6: Applying Sealant
      G02110366Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Make sure the mating marks on the timing chain and each sprocket are still aligned. Then install the front cover.
      CAUTION:
      • Be careful not to damage the front oil seal during installation with the front end of the crankshaft.
    4. Tighten mounting bolts in the numerical order shown.
      5. Fig 7: View Of Front Cover Torque Sequence
      G02110367Courtesy of NISSAN MOTOR CO., U.S.A.
    5. After all bolts are tightened, retighten them to the specified torque.
      1. Front cover bolts :12 - 13 N.m (1.2 - 1.4 kg-m, 9 - 10 ft-lb) 
      CAUTION: Wipe off any excess sealant leaking at the surface for installing the oil pan.
  8. Install the chain guide between the camshaft sprockets.
  9. Install IVTC cover with the following procedure:
    1. Install IVTC solenoid valves to IVTC cover.
    2. Install oil rings to the intake camshaft sprocket insertion points on intake valve timing control backside cover.
    3. Install O-ring to front cover.
    4. Apply RTV Silicone Sealant to the positions in the figure.
      Fig 8: Applying Sealant
      G02110368Courtesy of NISSAN MOTOR CO., U.S.A.
    5. Tighten the mounting bolts in the numerical order as shown.
    Fig 9: View Of Torque Sequence
    G02110369Courtesy of NISSAN MOTOR CO., U.S.A.
  10. Insert crankshaft pulley by aligning with crankshaft key.
    • Tap its center with a plastic hammer to insert.
    • Do not tap the belt hook.
  11. Tighten crankshaft pulley mounting bolts.
    • Secure crankshaft pulley with a pulley holder to tighten the bolt.
    • Perform angle tightening with the following procedure:
    1. Apply new engine oil to threads and seat surfaces of mounting bolts.
    2. Tighten to initial specifications:
      1. Crankshaft pulley bolt initial tightening : 37.3 - 47.1 N.m (3.8 - 4.8 kg-m, 28 - 34 ft-lb) 
    3. Apply a paint mark on the front cover, mating with any one of six easy to recognize stamp marks on bolt flange.
    4. Turn crankshaft pulley bolt another 60° to 66° degrees [Target: 60° degrees].
      Fig 10: Installing Crankshaft Pulley
      G02110370Courtesy of NISSAN MOTOR CO., U.S.A.
      • Check vertical mounting angle with movement of one stamp mark.
  12. Installation of the remaining parts is in reverse order of removal.
scientia non olet · About LEMON Manuals