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Step by step instructions on changing out: timing belt and water pump

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  • Mitsubishi Master
  • 6,826 Answers

For a 1998 Mitsubishi Eclipse as an example:

Timing Belt & Sprockets Removal & Installation 2.0L Engine To Remove:

  1. Remove the crankshaft pulley.
  2. Remove the power steering pump without disconnecting the fluid hose. Secure the pump out of the way.
  3. Remove the power steering pump bracket.
  4. Support the engine with a jack and remove the engine mount assembly.
  5. Remove the timing belt cover.
  6. Rotate the crankshaft to align the timing marks. Loosen the tensioner and remove the belt.
Timing belt timing marks (2.0L) step by step instructions on - mitsubishi-03-20-3920.gif

CAUTION
Do not rotate the camshafts or crankshafts without the timing belt installed.
To Install:
  1. Compress the tensioner in a vise and install a pin through the tensioner to hold it in position.
  2. Make sure the timing marks are aligned. Move the crankshaft slightly counterclockwise to ½ notch before TDC.
  3. Install the timing belt on the crankshaft sprocket, water pump, idler pulley, camshafts and then the tensioner pulley.
  4. Rotate the crankshaft slightly to TDC to take up belt slack.
  5. Loosely install the tensioner on the block.
  6. Apply 21 ft-lbs (28 Nm) or torque to the tensioner pulley, push the tensioner against the pulley bracket and tighten the tensioner bolts to 23 ft-lbs (31 Nm).
  7. Remove the pin from the tensioner. Tension is correct when the pin can be removed and installed. Timing belt tension adjustment (2.0L)

  8. Rotate the crankshaft two complete turns and verify the timing marks align.
  9. Install the timing belt cover.
  10. Install the engine mount. Engine mount stopper installation mitsubishi-03-24-3887.gif

  11. Install the power steering pump bracket and pump.
  12. Install the crankshaft pulley.
Water Pump Removal & Installation 2.0L Non-Turbo Engine To Remove:
  1. Drain the engine coolant.
  2. Remove the timing belt, timing belt tensioner and idler pulley.
  3. Remove the camshaft sprockets.
  4. Remove the timing belt rear cover.
  5. Remove the water pump and O-ring.
Water pump removal/installation (2.0L non-turbo)

To Install:
  1. Install the water pump and O-ring. Lubricate the O-ring with coolant. Make sure the rubber seal does not contact oil or grease.
  2. Install the timing belt rear cover.
  3. Install the camshaft sprockets.
  4. Install the timing belt, timing belt tensioner and idler pulley.
  5. Refill the cooling system.
2.0L Turbo & 2.4L Engine To Remove:
  1. Drain the engine coolant.
  2. Remove the generator brace.
  3. Remove the timing belt.
  4. Remove the water pump, gasket and O-ring.
Water pump removal/installation (2.0L turbo & 2.4L) mitsubishi-03-20-3985.gif

To Install:
  1. Install the water pump with new gasket and O-ring. Lubricate the O-ring with coolant. Make sure the rubber seal does not contact oil or grease.
  2. Install the timing belt.
  3. Install the generator brace.
  4. Refill the cooling system.
  5. next.gif

Posted on Jul 22, 2010

  • 2 more comments 
  • Duane Wong
    Duane Wong Jul 22, 2010

    If you need another year, submodel, turbo, or other, I can look it up. Contact me if that's the case.

  • choclemmond Jul 22, 2010

    Duane......my vehicle is a 2001 year model please send info requested on this model, Thanks.

  • Duane Wong
    Duane Wong Jul 22, 2010



    Timing Belt
    Removal & Installation
    2.4L Engine





    Timing belt (2.4L)




    To Remove:


    1. Remove the engine mount bracket.
    2. Remove the drive belt (power steering oil pump and A/C compressor).
    3. Remove the drive belt (generator).
    4. Remove the water pump pulley.
    5. Remove the crankshaft pulley.
    6. Remove the timing belt upper cover assembly.
    7. Remove the timing belt lower cover assembly.
      CAUTION
      The crankshaft should ONLY ever be turned in the forward direction.

    8. When removing the timing belt, do the following:

      • Step 1: Rotate the crankshaft in the forward direction (toward the right) to line up the camshaft sprocket timing marks.
        CAUTION
        If the timing belt is to be reused, mark the flat side with an arrow to show the clockwise direction. Use chalk to mark the timing belt.

      • Step 2: Loosen the tension pulley fixing bolt.
      • Step 3: Move the tension pulley to the water pump side then remove the timing belt.

    9. Remove the tensioner pulley.
    10. Remove the auto tensioner.

    To Install:






    Timing belt (2.4L)




    CAUTION
    Never compress the pushrod too quickly because damage may occur.


    1. To install the auto-tensioner, do the following:





      Auto-tensioner





      • Step 1: Apply 22-44 lb (98-196 N) of force to the pushrod of the auto-tensioner by pressing it against a metal object (like the engine block) then measure the movement of the pushrod. Standard value: Within 0.04 in (1 mm).

    2. X = Length when auto-tensioner is not pressed
    3. Y = Length when auto-tensioner is pressed
    4. X – Y = Movement

      • Step 2: If the measurement is outside the standard value, replace the auto-tensioner.





        Auto-tensioner pin hole alignment




      • Step 3: Use a vise to carefully compress the auto-tensioner pushrod until pin hole X of the pushrod and pin hole Y of the tensioner cylinder are lined up.
      • Step 4: Once the holes are aligned, insert the set pin.
        NOTE: If you are replacing the auto-tensioner with a new part, the pin will be found in the auto-tensioner.

      • Step 5: Install the auto-tensioner onto the engine.

    5. Install the tensioner pulley.
    6. To install the timing belt, do the following:

      • Step 1: Line up the timing marks on the camshaft sprocket, crankshaft sprocket, and oil pump sprocket.
      • Step 2: After lining up the timing mark on the oil pump sprocket, remove the cylinder block plug and insert a 0.3 in (8 mm) Phillips head screwdriver. Check to be sure that the screwdriver goes in at least 2.4 in (60 mm). If the screwdriver will not go in more than 0.8-1.0 in (20-25mm) before it hits the counterbalance shaft, turn the sprocket once, realign the timing marks and make sure the screwdriver goes in at least 2.4 in (60 mm). The screwdriver should not be removed until the timing belt is installed.
        CAUTION
        If the timing belt will be reused, install it so the arrow made during removal is pointing in the clockwise direction.

      • Step 3: Install the belt onto the crankshaft sprocket, oil pump sprocket, and camshaft sprocket in that order, to ensure the belt tension has no slack.
      • Step 4: Set the tension pulley so that the pin holes are at the bottom, press the tension pulley gently against the timing belt, then temporarily tighten the fixing bolt.
      • Step 5: Adjust the timing belt tension.

      CAUTION
      Do not use a wrench or other tool to turn the adjusting screw (special tool #MD998738) because the auto-tensioner set pin might break. Only turn the adjusting screw (special tool #MD998738) by hand.

    7. When adjusting the timing belt tension, do the following:

      • Step 1: Remove the rubber plug from the rear of the timing belt cover assembly. Next, screw in an adjusting screw (special tool #MD998738) by hand until the tensioner arm is touching the auto-tensioner pushrod.
      • Step 2: After rotating the crankshaft ¼ of a turn counterclockwise, rotate it in the clockwise direction until the timing marks are lined up.
        CAUTION
        When you tighten the fixing bolt, be sure the tension pulley does not turn with the bolt.

      • Step 3: Loosen the tension pulley fixing bolt, then use the tensioner pulley socket wrench (special tool #MD998767) and a torque wrench to tighten the fixing bolt to 36 ft-lbs (48 Nm) while applying tension of 31 in-lbs (3.5 Nm) to the timing belt.
      • Step 4: Remove the set pin that had been inserted into the auto-tensioner, then remove the tensioner pulley socket wrench (special tool #MD998767).
      • Step 5: Rotate the crankshaft two revolutions clockwise so that the timing marks are lined up. After leaving it for 15 minutes, measure the amount of protrusion of the auto-tensioner. The standard value is 0.15 - 0.18 in (3.8 - 4.5 mm).
      • Step 6: If the amount of protrusion is outside of the standard value, repeat steps 1 - 5.
      • Step 7: Make sure the timing marks on each sprocket are lined up.

    8. Install the timing belt lower cover assembly.
    9. Install the timing belt upper cover assembly.
    10. Install the crankshaft pulley.
    11. Install the water pump pulley.
    12. Install the generator drive belt.
    13. Install the drive belt for the power steering oil pump and A/C compressor.
    14. Install the engine mount bracket.
    15. Check the drive belt tension.

  • Duane Wong
    Duane Wong Jul 22, 2010

    I searched under water pump and this is the removal and replacement, but it seems like it is more like the generator. But, I'm letting you know what I got on it:





    Removal & Installation
    To Remove:






    Generator (2.4L & 3.0L)





    1. Remove the under cover.
    2. Remove the engine mount bracket.
    3. Remove the oil pressure hose and tube assembly clamp bolts (2.4L engine).
    4. Remove the oil return tube assembly clamp bolt (2.4L engine).
    5. To remove the power steering & A/C drive belt (2.4L engine), do the following:





      Drive belt removal





      • Step 1: Loosen nut "X" for holding the tension pulley.
      • Step 2: Loosen bolt "Y" for adjustments.
      • Step 3: Remove the drive belt.

    6. Remove the generator drive belt.
    7. Remove the oil dipstick and dipstick guide (3.0L engine).
    8. Remove the water pump pulley (2.4L engine).
    9. Remove the generator connector.
    10. Remove the generator brace (2.4L engine).
    11. Remove the Generator.
    12. Remove the generator brace (3.0L engine).

    To Install:






    Generator (2.4L & 3.0L)





    1. Install the generator brace (3.0L engine).
    2. Install the Generator.
    3. Install the generator brace (2.4L engine).
    4. Install the generator connector.
    5. Install the water pump pulley (2.4L engine).
    6. Install the oil dipstick and dipstick guide (3.0L engine).
    7. Install the generator drive belt.
    8. Install the power steering & A/C drive belt (2.4L engine).
    9. Install the oil return tube assembly clamp bolt (2.4L engine).
    10. Install the oil pressure hose and tube assembly clamp bolts (2.4L engine).
    11. Install the engine mount bracket.
    12. Check the drive belt tension.
    13. Install the under cover.


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