Question about 1995 Isuzu Trooper

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Replace timing belt - 1995 Isuzu Trooper

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  • Isuzu Master
  • 2,984 Answers

1993–96 2.3L and 2.6L Engines

  1. Disconnect the negative battery cable.
  2. Loosen and remove the engine accessory drive belts.
  3. Remove the cooling fan assembly and the water pump pulley.
  4. Drain the fluid from the power steering reservoir.
  5. Unbolt and remove the power steering pump. Unbolt the hydraulic line brackets from the upper timing cover and move the pump out of the work area without disconnecting the hydraulic lines.
  6. Disconnect and remove the starter motor if a flywheel holder (part No. J–38674) is to be used.
  7. Remove the upper timing belt cover.
  8. Rotate the crankshaft to set the engine at TDC/compression for the No. 1 cylinder. The arrow mark on camshaft sprocket aligns with mark on the rear timing cover.
  9. Remove the crankshaft pulley.
  10. Remove the lower timing belt cover.
  11. Verify that the engine is set at TDC/compression for the No. 1 cylinder. The notch on the crankshaft sprocket aligns with the pointer on the oil seal retainer.
  12. Release and remove the tensioner spring to release the timing belt's tension.
  13. Remove the timing belt.
  14. Unbolt the tensioner pulley bracket from the engine's front cover.
  15. If necessary, unbolt and remove the camshaft sprockets. Use a puller to remove the crankshaft pulley if necessary. Don't loose the crankshaft sprocket key. To install:
  16. Install the camshaft and crankshaft sprockets if they were removed. Align the timing marks and be sure to install any keys. Tighten the camshaft sprocket bolt to 43 ft. lbs. (59 Nm).
  17. Install the tensioner assembly. Tighten the tensioner mounting bolt to 14 ft. lbs. (19 Nm). Tighten the cap bolt to 9 ft. lbs. (13 Nm).
  18. Make sure the crankshaft and the camshaft sprockets are aligned with their timing marks. Install the timing belt onto the sprockets using the following sequence: first, crankshaft sprocket; second, oil pump sprocket; third, camshaft sprocket.
  19. Loosen the tensioner mounting bolt. This will allow the tensioner spring to apply pressure to the timing belt.
  20. After the spring has pulled the timing belt as far as possible, temporarily tighten the tensioner mounting bolt to 14 ft. lbs. (19 Nm). NOTE: Remove the flywheel holder before rotating the crankshaft. Reinstall the holder to torque the crankshaft pulley bolt.
  21. Rotate the crankshaft counterclockwise two complete revolutions to check the rotation of the belt and the alignment of the timing marks. Listen for any rubbing noises which may mean the belt is binding.
  22. Loosen the tensioner pulley bolt to allow the spring to adjust the correct tension. Then, retighten the tensioner pulley bolt to 14 ft. lbs (19 Nm).
  23. Install the lower timing cover and the crankshaft pulley.
  24. Tighten the crankshaft pulley bolt to 87 ft. lbs. (118 Nm). Tighten the small pulley bolts to 6 ft. lbs. (8 Nm).
  25. Install the upper timing cover.
  26. Install the starter if it was removed. Tighten the bolts to 30 ft. lbs. (40 Nm).
  27. Install the power steering pump. If the hydraulic lines were disconnected, refill and bleed the power steering system.
  28. Install the water pump pulley and tighten its nut to 20 ft. lbs. (26 Nm).
  29. Install the cooling fan assembly.
  30. Install and adjust the accessory drive belts.
  31. Connect the negative battery cable.

Posted on Jun 26, 2009

  • 8 more comments 
  • Greg Bernett
    Greg Bernett Jun 26, 2009

    Crankshaft sprocket groove and alignment marks — 3.2L engine





  • Greg Bernett
    Greg Bernett Jun 26, 2009

    Sorry...will try again with the pic

  • Greg Bernett
    Greg Bernett Jun 26, 2009

    Crankshaft sprocket groove and alignment marks — 3.2L engine



  • Greg Bernett
    Greg Bernett Jun 26, 2009

    Camshaft sprocket alignment marks — 3.2L engine



  • Greg Bernett
    Greg Bernett Jun 26, 2009

    Timing belt direction of installation and rotation — 3.2L engine






    Timing belt tensioner pulley with pusher installed — 3.2L engine



  • Greg Bernett
    Greg Bernett Jun 26, 2009

    Large paper clips are an excellent way to hold the belt in place during service. Timing belt tensioner pulley with pusher installed — 3.2L engine



  • Greg Bernett
    Greg Bernett Jun 26, 2009




    This goes with the paper clip comment.

  • Greg Bernett
    Greg Bernett Jun 26, 2009

    These are the steps for the 3.2L:




    1. Disconnect the negative battery cable.
    2. Drain the engine coolant into a sealable container.
    3. Remove the air cleaner assembly.
    4. Remove the upper fan shroud from the radiator.
    5. Remove the four nuts retaining the cooling fan assembly. Remove the cooling fan.
    6. Remove the power steering drive belt.
    7. Remove the air conditioning compressor drive belt.
    8. Remove the alternator drive belt.
    9. Remove the fan pulley assembly.
    10. Set the timing belt so that the timing marks on the sprockets align with those on the oil pump and front plate.
    11. Remove the crankshaft pulley center bolt. Remove the crankshaft pulley.
    12. Remove the two oil cooler hose bracket fixing bolts on the timing cover. Remove the oil cooler hoses and bracket.
    13. Remove the timing belt cover.
      WARNING
      Set the timing sprockets so that the crankshaft and camshaft sprocket timing marks align with the timing marks on the oil pump and front plate. When the timing marks are align, no pistons are at TDC for the compression stroke. Valve damage may result if the sprockets and belt are out of alignment.


    14. Remove the pusher. The rod must always be facing upward.
    15. Mark the timing belt, cam pulley and crankshaft pulley. Remove the timing belt.
      To install:

    16. Align the groove on the crankshaft timing pulley with mark on the oil pump.
    17. Align the marks on the camshaft timing pulleys with the dots on the front plate.
    18. Install the timing belt. Align the dotted marks on the timing belt with the mark on the crankshaft pulley.
    19. Align the white line on the timing belt with the alignment mark on the right bank camshaft timing pulley. Secure the belt with a small clamp.
    20. Turn the crankshaft counterclockwise to remove the slack between the crankshaft pulley and the right camshaft timing pulley.
    21. Install the belt on the water pump pulley.
    22. Install the belt on the idler pulley.
    23. Align the white alignment mark on the timing belt with the alignment mark on the left bank camshaft timing pulley.
    24. Install the crankshaft pulley and tighten the center bolt by hand. Turn the crankshaft pulley clockwise to give slack between the crankshaft timing pulley and the right bank camshaft timing pulley.
    25. Install the pusher while pushing the tension pulley to the belt.
    26. Pull the pin out from the pusher.
    27. Remove the clamps from the pulleys. Turn the crankshaft pulley clockwise two turns. Measure the rod protrusion to be sure it is between 0.16–0.24 in. (4–6mm).
    28. Check the stick–out of the pusher plunger against the belt tensioner. Clearance should be 0.16–0.24 in. (4–6mm).
    29. Tighten adjusting bolt to 31 ft. lbs. (42 Nm).
    30. Tighten pusher bolt to 14 ft. lbs. (19 Nm).
    31. Remove crankshaft pulley. Install the timing belt cover and tighten bolts to 12 ft. lbs. (17 Nm).
    32. Install the oil cooler hose and tighten brackets to 16 ft. lbs. (22 Nm).
    33. Install the crankshaft pulley and tighten bolts to 123 ft. lbs. (167 Nm).
    34. Install fan pulley assembly and tighten fixing bolts to 16 ft. lbs. (22 Nm).
    35. Install and adjust alternator drive belt.
    36. Install and adjust air conditioning drive belt.
    37. Install and adjust power steering pump drive belt.
    38. Install cooling fan assembly and tighten bolts to 69 inch lbs. (8 Nm).
    39. Install upper fan shroud to the radiator.
    40. Install air cleaner assembly.
    41. Refill and bleed the cooling system.
    42. Reconnect the negative battery cable.
    43. Check the operation of the engine and valve train.

  • Greg Bernett
    Greg Bernett Jun 26, 2009

    ADJUSTMENT
    WARNING
    It is very highly recommended that a timing belt be replaced any time its tension is released.
    A timing belt should not be viewed as an adjustable component. The timing belt's tension cannot be increased to compensate for wear. If the engine has been disassembled for mechanical work, a new timing belt should be installed. The small cost of a new timing belt is cheap insurance against expensive engine damage which can be caused by the failure of a re–used timing belt.
    SETTING THE TENSION OF A NEW TIMING BELT


    1. Verify that the camshaft sprocket timing marks are aligned. The groove and the keyway on the crankshaft timing sprocket align with mark on the oil pump. The white pointers on the camshaft timing sprockets align with the dots on the front plate.
    2. Install the timing belt. Use clips to secure the belt onto each sprocket until the installation is complete. Align the dotted marks on the timing belt with the timing mark opposite the groove on the crankshaft sprocket.
      NOTE: The arrows on the timing belt must follow the belt's direction rotation. The manufacturer's trademark on the belt's spine should be readable left–to–right when the belt is installed.


    3. Align the white line on the timing belt with the alignment mark on the right bank camshaft timing pulley. Secure the belt with a clip.
    4. Rotate the crankshaft counterclockwise to remove the slack between the crankshaft sprocket and the right camshaft timing sprocket.
    5. Install the belt around the water pump pulley.
    6. Install the belt on the idler pulley.
    7. Align the white alignment mark on the timing belt with the alignment mark on the left bank camshaft timing sprocket.
    8. Install the crankshaft pulley and tighten the center bolt by hand. Rotate the crankshaft pulley clockwise to give slack between the crankshaft timing pulley and the right bank camshaft timing pulley.
    9. Insert a 1.4mm piece of wire through the hole in the pusher to hold the rod in. Install the pusher assembly while pushing the tension pulley toward the belt.
    10. Pull the pin out from the pusher to release the rod.
    11. Remove the clamps from the sprockets. Rotate the crankshaft pulley clockwise two turns. Measure the rod protrusion to be sure it is 0.16–0.24 in. (4–6mm).
    12. If the tensioner pulley bracket pivot bolt was removed, tighten it to 31 ft. lbs. (42 Nm).
    13. Tighten pusher bolts to 14 ft. lbs. (19 Nm).
    14. Remove crankshaft pulley. Install the lower and upper timing belt covers and tighten their bolts to 12 ft. lbs. (17 Nm).
    15. Install the crankshaft pulley and tighten the pulley bolt to 123 ft. lbs. (167 Nm).

  • Greg Bernett
    Greg Bernett Jun 26, 2009

    PLEASE DON'T FORGET TO RATE.

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Check Your Timing Belt
  • Check your owner's manual for the recommended mileage for replacing your timing belt. Replacement for Hyundai Sonatas is 60,000 miles.
  • Locate the timing belt and examine it for breaks, damage, fraying, worn spots or looseness.
  • Inspect the belt for cracked or missing teeth that may be the result of foreign material collecting between them.
  • Determine if the timing belt damage is on both sides. Single-side damage may be caused by the timing belt's guide.
    Remove Your Timing Belt

  • Disengage the negative battery cable.
  • Turn the tensioner arm to the right 14° and take the timing belt off its pulley.
  • Take out the coolant pump, idler, tensioner and crankshaft pulleys and both timing belt covers.
  • Remove the engine's mounting insulator and mount bracket and the auto tensioner.
  • Align the crankshaft's timing mark so the first cylinder piston is at "Top Dead Center" (TDC). The camshaft sprocket and cylinder head cover timing marks also should align.
  • Unfasten the timing belt.


    Replace Your Timing Belt

  • Examine the cam and crankshaft sprockets. Replace if there is excessive wear or other damage.
  • Position the new timing belt on the sprockets.
  • Relax the timing belt tensioner so it can make contact with the belt. Adjust the belt to the tension recommended in your vehicle owner's manual. Also align the timing indicators on the cam, crank and other sprockets.
  • Return the engine to the 0° mark by turning it two revolutions in the direction of travel.
  • Secure the timing belt cover and reinstall whatever was removed to access the timing cover.
  • Reconnect the negative battery cable and any other items that were disconnected.
  • Start the engine and look for leaks


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6. Remove the timing belt tensioner pulley.
7. Remove the Timing Belt.
8. (If Replacing) Remove Idler Pulley.
Installation is reverse of removal. Keep a close eye on the timing marks on the cam sprockets to make sure you don't knock anything out of whack.

I would strongly recommend replacing the water pump while you are replacing the timing belt. (The water pump usually comes in the timing belt kit.) Otherwise you are going to have to do this all over again when your water pump goes out. Good Luck.

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