Question about 2005 Nissan Altima

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Cylinder head removal on 2005 nissan altima 2.5 engine would like to know how to remove the camshaft to remove the head bolts

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  • Nissan Master
  • 2,984 Answers

CYLINDER HEAD REMOVAL

2.5L Engines

  1. Before servicing the vehicle, refer to the Precautions Section.
  2. Drain cooling system and engine oil.
  3. Relieve the fuel system pressure.
  4. Remove or disconnect the following:
    • Negative battery cable
    • Upper radiator hose and heater hose
    • Right side fuse/relay box and move aside
    • Engine undercover
    • Resonator and air cleaner case
    • Engine top cover
    • All electrical and vacuum lines at the head
    • Fuse hose quick connector at fuel tube side
    • Engine harness and power steering hose bracket
    • Timing chain
    • Drive belt tensioner
    • Camshafts
    • Spark plugs
    • Exhaust manifold
  5. Support the engine from above and below with a suitable jack and hoist.
  6. Remove or disconnect the following:
    • Power steering pump and reservoir and wire aside
    • Auxiliary drive belts
    • A/C compressor and wire aside
    • Upper sway bar links
    • Front and rear engine mount through bolts
    • Lower ball joints
    • 2 steering gear housing mounting bolts
    • Front suspension member bolts and front suspension member
  7. Loosen the cylinder head bolts in the sequence shown and remove the cylinder head.
cylinder head removal on 2005 nissan altima 2.5 - d365038.gif
Removing the front suspension member—Altima

7555308.gif
Cylinder head bolt removal sequence—2.5L engine&ncylinder head removal on 2005 nissan altima 2.5 - 1e6ce81.gif and Sentra

1e6ce81.gif
Cylinder head bolt tightening sequence—2.5L engine–Altima and Sentra

To install:
  1. Clean the gasket surfaces.
  2. Using new head gaskets, install the cylinder heads.
    NOTE If possible, replacement of the head bolts is suggested.

  3. If replacement of the head bolts is not possible, perform the following bolt measurement:
    • Measure the diameter of the head bolt 0.43 in. (11mm) from the bottom of the bolt.
    • Measure the diameter of the head bolt 2.17 in. (55mm) from the bottom of the bolt.
    • Whenever the size difference between the 2 measurements exceeds 0.0091 in. (0.23mm) the head bolts must be replaced.
  4. Apply clean engine oil to the bolt threads and seating surfaces and tighten the cylinder head bolts in sequence as follows:
    • Step 1: 72 ft. lbs. (98 Nm).
    • Step 2: Loosen all the bolts completely.
    • Step 2: 29 ft. lbs. (33 Nm).
    • Step 4: Plus 75–80 degrees clockwise.
    • Step 5: Plus 75–80 degrees clockwise.
  5. Install the front suspension member and tighten the bolts to the specifications shown in the illustration.
  6. Install or connect the following:
    • 2 steering gear housing mounting bolts
    • Lower ball joints
    • Front and rear engine mount through bolts
    • Upper sway bar links
    • A/C compressor
    • Auxiliary drive belts
    • Power steering pump and reservoir
    • Exhaust manifold
    • Spark plugs
    • Camshafts
    • Drive belt tensioner
    • Timing chain
    • Engine harness and power steering hose bracket
    • Fuse hose quick connector at fuel tube side
    • All electrical and vacuum lines at the head
    • Engine top cover
    • Resonator and air cleaner case
    • Engine undercover
    • Right side fuse/relay box and move aside
    • Upper radiator hose and heater hose
    • Negative battery cable
  7. Fill the cooling system and engine oil
  8. Start the vehicle, check for leaks and repair if necessary.

Posted on Nov 13, 2009

  • 1 more comment 
  • Greg Bernett
    Greg Bernett Nov 13, 2009

    CAMSHAFT REMOVAL



    2.5L Engine



    1. Before servicing the vehicle, refer to the Precautions Section.


    2. Relieve the fuel system pressure.


    3. Drain coolant from the engine and radiator.


    4. Remove or disconnect the following:



      • Negative battery cable


      • Engine undercover


      • Right front wheel


      • Valve cover


      • Drive belt


      • Coolant reservoir


      • Variable timing control solenoid connector


      • Camshaft position sensor


      • Intake valve timing control cover in reverse of the tightening sequence


      • Set the No. 1 piston at Top Dead Center (TDC) on its compression stroke


    5. Check that the mating marks on the camshaft sprockets are lined up with the Yellow links on the timing chain. If not, rotate the crankshaft one revolution until the links line up.


    6. Remove the timing chain guide out between the camshaft sprockets through the front cover.


    7. Push in the plunger on the timing chain tensioner, then insert a pin to hold the tensioner retracted.


    8. Remove the timing chain tensioner .


    9. While holding the flat of the camshaft with an open end wrench, loosen and remove the camshaft sprockets.


    10. Loosen the camshaft brackets in the order shown .


    11. Remove the camshafts.


    12. Remove the valve lifters.




    Camshaft bearing cap removal sequence—2.5L engines






    Identifying camshaft bearing cap installation marks—2.5L engines






    Camshaft bearing cap tightening sequence—2.5L engines






    Camshaft sprocket alignment marks—2.5L engines






    Intake valve timing cover tightening sequence—2.5L engines



    To install:





    NOTE


    When installing the valve components, apply a coat of clean engine oil to the component.




    1. Install or connect the following:



      • Lifters into the lifter bores from which they were removed


      • Valve shims to the lifters from which they came


    2. Install the camshafts so the dowel pin on the intake camshaft is placed at the three o’clock position and the exhaust camshaft pin is placed at the twelve o’clock position.


    3. Install the camshaft caps with the identifying marks placed in the correct position as shown.


    4. Place a bead of sealant of the No. 1 bearing cap bottom edge.


    5. Place a bead of sealant on the back side of the front cover where the No. 1 bearing cap lines up.


    6. Apply sealant to the bolt hole on the front cover.


    7. Install the No. 1 bearing cap so the sealant joints line up.


    8. Tighten the camshaft bearing caps bolts in the proper sequence as follows:



      • Step 1 bolts 9–11: 17 inch lbs. (2 Nm).


      • Step 2 bolts 1–8: 17 inch lbs. (2 Nm).


      • Step 3 bolts 1–11: 52 inch lbs. (6 Nm).


      • Step 4 bolts 1–11: 80–104 inch lbs. (9–12 Nm).


    9. Install the camshaft sprockets so the mating marks are aligned as shown.


    10. Install or connect the following:



      • Timing chain tensioner and remove the pin


      • Intake valve timing control cover and tighten the bolts in the sequence shown.


      • Check and adjust the valve clearance as necessary.


      • Timing chain guide between the camshaft sprockets through the front cover


      • Camshaft position sensor


      • Variable timing control solenoid connector


      • Coolant reservoir


      • Drive belt


      • Valve cover


      • Right front wheel


      • Negative battery cable


      • Engine undercover


    11. Fill the cooling system.


    12. Start the vehicle, check for leaks and repair if necessary.

  • victor lopez May 18, 2013

    is there a trick to take off the timing chain cover on a 04 nissan altima 2,5

  • Rodney Graves Jun 29, 2013

    How much is 75-80 degrees

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toy_car_18_gen-p-s-mnts-cvrs-exhst_xp.gif

Except XRS toy_car_18_eng_cmpnts+oil_pmp_loc_1zz-fe_xp.gif

XRS toy_car_18_eng_cmpnts+oil_pmp_loc_2zz-ge_xp.gif

toy_car_18_gen-p-s-mnts-cvrs-exhst_xp.gif

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  2. Drain cooling system.
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  4. Remove the upper radiator support insulator.
  5. Remove the right front wheel and tire assembly.
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  11. Raise and support the engine with floor a jack. toy_car_18_eng_rh_mntng_inslt_blts.gif

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  19. Remove the Ventilation pipe and gasket (XRS).
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  9. Remove the valve lifters and the secondary timing chain tensioner with stopper pin attached if necessary.
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  2. If removed, install the secondary timing chain tensioners and valve lifters in their original positions. NOTE: The intake camshaft has a drill mark on the edge of the sprocket mounting flange.
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  4. Apply silicone sealant to the front (No. 1) camshaft bracket as shown. Apply silicone sealant to the front (No. 1) camshaft bracket nissan-03-35-4627.gif

    Camshaft bracket bolt installation sequence nissan-03-35-4628.gif

  5. Install and tighten the camshaft brackets using the following steps in the sequence shown;
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    • Step 2 (bolts 1 - 6) : 1 ft-lb (2 Nm)
    • Step 3 (bolts 1 - 10): 4 ft-lbs (5.9 Nm)
    • Step 4 (bolts 1 - 6) : 8 ft-lbs (10.4 Nm)
    • Step 4 (bolts 7 - 10) : 7 ft-lbs (9.3 Nm)
  6. Wipe off excess sealant from bracket No. 1.
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  8. Install the IVT control solenoid valves with new gaskets.
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prev.gif next.gif

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