LEMON Manuals: Even more car manuals for everyone
Home >> Infiniti >> 2004 >> QX56 RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1200 (Engine Mechanical) >> Cylinder Block >> Disassembly and Assembly >> Assembly

Disassembly and Assembly: Assembly

WARNING: This page is about a different car, the 2005 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.
  1. Fully air-blow the coolant and oil passages in the cylinder block, cylinder bore, and crankcase to remove any foreign material.
    CAUTION: Use goggles to protect your eyes.
  2. Install each plug to the cylinder block (only screw-type plugs are shown).
    Fig 1: Installing Each Plug To Cylinder Block
    G02384556Courtesy of NISSAN MOTOR CO., U.S.A.
    CYLINDER BLOCK PLUG - TORQUE SPECIFICATIONS

    Part Washer Tightening torque
    A Yes 53.9 N.m (5.5 kg-m, 40 ft-lb)
    B No 19.6 N.m (2.0 kg-m, 15 ft-lb)
    C Yes 62.7 N.m (6.4 kg-m, 46 ft-lb)
    D Yes 62.7 N.m (6.4 kg-m, 46 ft-lb)
  3. Install main bearings and thrust bearings.
    1. Remove any dust, dirt, and oil on the bearing mating surfaces of the cylinder block and the main bearing caps.
    2. Install thrust bearings to both sides of the No. 3 journal housing on the cylinder block and main bearing caps.
      • Install thrust bearings with the oil groove facing the crankshaft arm (outside).
      • Install thrust bearings with a protrusion in the center on the main bearing caps.
      Fig 2: Identifying Oil Groove, Block Side And Cap Side
      G02384557Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Install main bearings paying attention to the direction.
      • Install the one with oil holes onto the cylinder block and the one without oil holes onto the main bearing cap.
      • Before installing bearings, apply engine oil to bearing surface (inside). Do not apply oil to the back surface, but thoroughly clean it.
      • When installing, align the bearing stopper to the notch.
      • Ensure the oil holes on the cylinder block and those on the corresponding bearing are aligned.
    Fig 3: Identifying Main Bearings
    G02384558Courtesy of NISSAN MOTOR CO., U.S.A.
  4. Install pilot converter to the crankshaft using suitable tool.
  5. Install crankshaft to the cylinder block.
    • While turning crankshaft by hand, make sure it turns smoothly.
    Fig 4: Installing Pilot Converter To Crankshaft Using Suitable Tool
    G02384559Courtesy of NISSAN MOTOR CO., U.S.A.
  6. Install main bearing caps.
    • Align the identification number to the journal position to install.
    • Install it with the front mark (indicated by the arrow) facing the front of engine.
    • Tap caps lightly to seat them in the installation position.
    Fig 5: Installing Main Bearing Caps
    G02384560Courtesy of NISSAN MOTOR CO., U.S.A.
  7. Follow the steps below to tighten each main bearing cap bolt.
    1. Apply engine oil to threads and seating surfaces of bolts, and tighten all bolts temporarily.
      1. Main bearing cap bolts in order of 1 to 10: 39.2 N.m (4.0 kg-m, 29 ft.-lb) 
      2. Main bearing cap sub bolts in order of 11 to 20: 29.4 N.m (3.0 kg-m, 22 ft-lb) 
      Fig 6: Tightening Sequence Of Main Bearing Cap Bolts
      G02384561Courtesy of NISSAN MOTOR CO., U.S.A.
    2. Measure tightening angle using Tool.
      1. Tool number: KV10112100 (BT-8653-A) 
      CAUTION: Measure tightening angle using Tool. Do not measure visually.
      1. Main bearing cap bolts in: 40° order of 1 to 10
      2. Main bearing cap sub bolts in order of 11 to 20: 30°
      3. Side bolts in order of 21 to: 49 N.m (5.0 kg-m, 36 ft-lb) 30
      Fig 7: Measuring Tightening Angle Using Tool (KV10112100)
      G02384562Courtesy of NISSAN MOTOR CO., U.S.A.
      • Rotate crankshaft by hand after bolts are tightened. Check if it rotates smoothly.
      • Check crankshaft side clearance. Refer to "CRANKSHAFT END PLAY ".
  8. Install rear oil seal to the oil seal retainer.
    CAUTION: Do not damage or scratch outer circumference of oil seal.
    • Install new rear oil seal in the direction shown.
      Fig 8: Installing New Rear Oil Seal In Specified Direction
      G02384563Courtesy of NISSAN MOTOR CO., U.S.A.
    • Tap until flattened with the front edge of the rear oil seal retainer using suitable tool.
    • Fit the rear oil seal until it is level with the rear end surface of rear oil seal retainer.
    Fig 9: Using Suitable Tool, Tap Until Flattened With Front Edge Of Rear Oil Seal Retainer
    G02384564Courtesy of NISSAN MOTOR CO., U.S.A.
  9. Install rear oil seal retainer.
    • Apply liquid gasket thoroughly to rear oil seal retainer as shown.

      Use Genuine RTV Silicone Sealant or equivalent. Refer to  "RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS ".

    • Apply new engine oil on the lips of rear oil seal. Do not touch.
    Fig 10: Applying Liquid Gasket Thoroughly To Rear Oil Seal Retainer
    G02384565Courtesy of NISSAN MOTOR CO., U.S.A.
  10. Install the piston to the connecting rod.
    1. Install the snap ring to the grooves of the piston rear side.
      • Insert it fully into the groove to install.
    2. Install the piston to the connecting rod.
      • Heat piston until piston pin can be pushed in by hand without excess force [approx. 60° to 70 C° (140° to 158 °F)]. From the front to the rear, insert the piston pin into the piston and the connecting rod.
      • Assemble so that the front mark on the piston crown and the oil holes and cylinder No. on the connecting rod are positioned as shown.
    3. Install the snap ring to the grooves of the piston front side.
      • Insert it fully into the groove to install.
      • After installing, make sure connecting rod moves smoothly.
    Fig 11: Assembling Front Mark On Piston Crown And Oil Holes And Cylinder No. On Connecting Rod
    G02384566Courtesy of NISSAN MOTOR CO., U.S.A.
  11. Install piston rings.
    CAUTION: Do not damage piston.
    • Position each ring with the gap as shown, referring to the piston front mark.
    • Install the second ring with the stamped surface facing upward.
      1. Stamped mark Second ring: 2N 
    Fig 12: Positioning Each Ring With Gap Referring To Piston Front Mark
    G02384567Courtesy of NISSAN MOTOR CO., U.S.A.
  12. Install the connecting rod bearings to the connecting rod and connecting rod cap.
    • When installing the connecting rod bearings, apply engine oil to the bearing surface (inside). Do not apply oil to the back surface, but thoroughly clean it.
    • When installing, align the connecting rod bearing stopper protrusion with the cutout of the connecting rod to install.
    • Check that the oil holes on the connecting rod and those on the corresponding bearing are aligned.
    Fig 13: Aligning Connecting Rod Bearing Stopper Protrusion With Cutout Of Connecting Rod
    G02384568Courtesy of NISSAN MOTOR CO., U.S.A.
  13. Install the piston and connecting rod assembly to the crankshaft using Tool.
    1. Tool number: EM03470000 (J-8037) 
    • Position the crankshaft pin corresponding to the connecting rod to be installed onto bottom dead center.
    • Apply engine oil sufficiently to the cylinder bore, piston, and crankshaft pin.
    • Match the cylinder position with the cylinder No. on the connecting rod to install.
    • Install the piston with the front mark on the piston crown facing the front of the engine.
      Fig 14: Installing Piston And Connecting Rod Assembly To Crankshaft Using Tool (EM03470000)
      G02384569Courtesy of NISSAN MOTOR CO., U.S.A.
      CAUTION: Be careful not to damage the crankshaft pin, resulting from an interference of the connecting rod big end.
  14. Install connecting rod cap.
    • Match the stamped cylinder number marks on the connecting rod with those on the cylinder cap to install.
    Fig 15: Matching Stamped Cylinder Number Marks On Connecting Rod With Marks On Cylinder Cap
    G02384570Courtesy of NISSAN MOTOR CO., U.S.A.
  15. Tighten connecting rod bolts using Tool.
    1. Tool number: KV10112100 (BT-8653-A 
    2. Connecting rod bolts 
    3. Step 1: 19.6 N.m (1.5 kg-m, 11 ft-lb) 
    4. Step 2: 90° clockwise 
    • Apply engine oil to threads and seats of connecting rod bolts.
    • After tightening bolts, make sure the crankshaft rotates smoothly.
    • Check connecting rod side clearance. Refer to "CONNECTING ROD SIDE CLEARANCE "
    Fig 16: Tightening Connecting Rod Bolts Using Tool (KV10112100)
    G02384571Courtesy of NISSAN MOTOR CO., U.S.A.
  16. Install knock sensor.
    CAUTION: If knock sensor is dropped, replace it with a new one.
    • Make sure that there is no foreign material on the cylinder block mating surface and the back surface of knock sensor.
    • Install it with its connector facing the center of the cylinder block side.
    • Do not tighten knock sensor bolts while holding connector.
    • Make sure knock sensor does not interfere with other parts.
      Fig 17: Identifying Knock Sensor
      G02384572Courtesy of NISSAN MOTOR CO., U.S.A.
    • Position the sub-harness as shown before installing intake manifold.
    Fig 18: Identifying Correct Position Of Sub-Harness For Installing Intake Manifold
    G02384573Courtesy of NISSAN MOTOR CO., U.S.A.
  17. Installation of the remaining components is in the reverse order of removal.
  18. Remove engine assembly from engine stand.
  19. Install drive plate.
    • Align dowel pin of crankshaft rear end with pin holes of each part to install.
      Fig 19: Aligning Dowel Pin Of Crankshaft Rear End With Pin Holes
      G02384574Courtesy of NISSAN MOTOR CO., U.S.A.
    • Install drive plate, reinforcement plate and pilot converter (if not installed in step 4) as shown.
    • Face the chamfered or rounded edge side to the crankshaft.
    Fig 20: Identifying Drive Plate, Reinforcement Plate And Pilot Converter
    G02384575Courtesy of NISSAN MOTOR CO., U.S.A.
scientia non olet · About LEMON Manuals