Mazda 323/MX-3/626/MX-6/Millenia/Protégé 1990-1998 and Ford Probe 1993-1997

Timing Belt and Sprockets

Print

The timing belt should be replaced every 60,000 miles. Failure to replace the belt may result in damage to the engine.

REMOVAL & INSTALLATION



1990-94 1.6L and 1.8L (except K8) Engines
SOHC Engines

See Figures 1, 2, 3, 4 and 5

  1. Disconnect the negative battery cable. Remove the engine undercover.
  2.  
  3. Remove the accessory drive belts.
  4.  
  5. Remove the water pump pulley.
  6.  
  7. Remove the crankshaft pulley bolts and remove the crankshaft pulley and baffle plate. Using a suitable tool to hold the crankshaft pulley and remove the pulley lockbolt. Remove the crankshaft pulley boss.
  8.  
  9. Remove the upper and lower timing belt covers.
  10.  
  11. Tag and disconnect the spark plug wires. Remove the spark plugs.
  12.  

Spark plugs are removed to make it easier to rotate the engine.

  1. Temporarily reinstall the crankshaft pulley boss and lockbolt.
  2.  



Click image to see an enlarged view

Fig. Fig. 1: Crankshaft sprocket timing marks for the 1.6L and 1.8L SOHC engines



Click image to see an enlarged view

Fig. Fig. 2: Camshaft sprocket timing marks for the 1.6L and 1.8L SOHC engines

  1. Turn the crankshaft, using the bolt, until the camshaft sprocket and crankshaft sprocket timing marks are aligned. Mark the direction of rotation on the timing belt.
  2.  
  3. Remove the belt tensioner lockbolt, the tensioner wheel and the spring. Remove the timing belt.
  4.  

Do not rotate the engine after the timing belt has been removed.

  1. Inspect the belt for wear, peeling, cracking, hardening or signs of oil contamination. Inspect the tensioner for free and smooth rotation. Check the tensioner spring free length; it should not exceed 2.520 in. (64mm). Inspect the sprocket teeth for wear or damage. Replace parts, as necessary.
  2.  
  3. If necessary to remove the sprockets:
    1. Insert a small prybar through one of the camshaft sprocket holes to keep it from turning.
    2.  
    3. Remove the sprocket bolt and the sprocket from the camshaft.
    4.  

  4.  

To install:
  1. Align the dowel on the camshaft with the dowel pin facing straight up. The dowel pin on the camshaft should also be facing upward.
  2.  
  3. Install the camshaft sprocket bolt. Hold the sprocket with the prybar and tighten the bolt(s) to 36-45 ft. lbs. (49-61 Nm).
  4.  
  5. Make sure the timing marks on the sprockets are properly aligned.
  6.  



Click image to see an enlarged view

Fig. Fig. 3: Install the timing belt tensioner and spring. Fully extend the tensioner spring then tighten the bolt to hold the tensioner pulley



Click image to see an enlarged view

Fig. Fig. 4: When installing the belt, ensure that there is no looseness on the tension side of the belt

  1. Install the timing belt tensioner and spring. Temporarily tighten the bolt with the spring fully extended.
  2.  
  3. Install the timing belt so there is no looseness on the tension side. If reusing the old timing belt, make sure it is reinstalled in the same direction of rotation.
  4.  
  5. Turn the crankshaft 2 turns clockwise and check the timing mark alignment. If the marks are not aligned, repeat Steps 11-14.
  6.  
  7. Loosen the tensioner lockbolt to set the tension, then torque the bolt to 19 ft. lbs. (25 Nm).
  8.  
  9. Turn the crankshaft 2 turns clockwise and check the alignment of the timing marks. If they are not aligned, repeat Steps 11-16.
  10.  



Click image to see an enlarged view

Fig. Fig. 5: Check timing belt deflection by applying pressure at the point shown, and measuring the deflection

  1. Apply approximately 22 lbs. pressure to the timing belt on the side opposite the tensioner, at a point midway between the sprockets. The belt should deflect 0.43-0.51 in. (11-13mm). If the tension is not as specified, repeat Steps 14-17 or, if necessary, replace the tensioner spring.
  2.  
  3. Install the spark plugs and connect the spark plug wires.
  4.  
  5. Install the upper and lower timing belt covers. Tighten the bolts to 95 inch lbs. (11 Nm).
  6.  
  7. Install the crankshaft pulley boss and tighten the lockbolt to 123 ft. lbs. (21 Nm), while holding the pulley boss with a suitable tool.
  8.  
  9. Install the crankshaft pulley and baffle plate.
  10.  
  11. Install the undercover or side cover. Connect the negative battery cable.
  12.  
  13. Start the engine and check for proper operation. Check the ignition timing.
  14.  

DOHC ENGINES

See Figures 6, 7, 8, 9 and 10

  1. Disconnect the negative battery cable. Remove the engine undercover.
  2.  
  3. Remove the accessory drive belts.
  4.  
  5. Remove the crankshaft pulley bolts and remove the crankshaft pulley.
  6.  
  7. Remove the outer timing belt guide plate. Remove the inner timing belt guide plate if so equipped.
  8.  
  9. Tag and disconnect the spark plug wires. Remove the spark plugs.
  10.  

Spark plugs are removed to make it easier to rotate the engine.

  1. Remove the engine oil dipstick.
  2.  
  3. Remove the upper, middle and lower timing belt covers.
  4.  



Click image to see an enlarged view

Fig. Fig. 6: Crankshaft sprocket timing marks for the 1990-94 1.8L DOHC engine



Click image to see an enlarged view

Fig. Fig. 7: Camshaft sprocket timing marks for the 1990-94 1.8L DOHC engine

  1. Turn the crankshaft until the timing marks on the crankshaft and camshaft sprockets are aligned. On 1993-94 vehicles, the pin on the pulley boss must face upward.
  2.  
  3. On 1993-94 vehicles, hold the crankshaft pulley boss with a suitable tool and remove the pulley lockbolt, being careful not to rotate the crankshaft. Remove the crankshaft pulley boss.
  4.  
  5. Mark the direction of rotation on the timing belt. Loosen the tensioner lockbolt and pry the tensioner outward. Tighten the lockbolt with the tensioner spring fully extended. Remove the timing belt.
  6.  

Protect the tensioner with a shop towel before prying on it. Do not rotate the crankshaft after the timing belt has been removed.

  1. Remove the tensioner and spring. If necessary, remove the idler pulley.
  2.  
  3. Inspect the belt for wear, peeling, cracking, hardening or signs of oil contamination. Inspect the tensioner for free and smooth rotation. Check the tensioner spring free length; it should not exceed 2.315 in. (58.8mm). Inspect the sprocket teeth for wear or damage. Replace parts, as necessary.
  4.  

To install:
  1. If removed, install the idler pulley and tighten the bolt to 38 ft. lbs. (52 Nm).
  2.  
  3. Install the tensioner and tensioner spring. Pry the tensioner outward and temporarily tighten the tensioner lockbolt with the tensioner spring fully extended.
  4.  



Click image to see an enlarged view

Fig. Fig. 8: Pry the tensioner pulley (protect it with a rag) outward to fully extend the spring, then tighten the bolt to hold it in position

  1. Make sure the crankshaft sprocket timing mark is aligned with the mark on the oil pump housing and the camshaft sprocket timing marks are aligned with the marks on the seal plate.
  2.  
  3. Install the timing belt so there is no looseness at the idler pulley side or between the camshaft sprockets. If reusing the old belt, make sure it is installed in the same direction of rotation.
  4.  
  5. On 1993-94 vehicles, temporarily install the pulley boss and lockbolt.
  6.  
  7. Turn the crankshaft 2 turns clockwise and align the crankshaft sprocket timing mark. On 1993-94 vehicles, face the pin on the pulley boss upright. Make sure the camshaft sprocket timing marks are aligned. If they are not, repeat Steps 15-19.
  8.  
  9. Turn the crankshaft 1 5 / 6 turns clockwise and align the crankshaft sprocket timing mark with the tension set mark for proper belt tension adjustment. On 1992-94 vehicles, remove the lockbolt and pulley boss.
  10.  



Click image to see an enlarged view

Fig. Fig. 9: To properly set tension on the belt, turn the crankshaft 15/6 turns and align the tension set mark with the crankshaft sprocket

  1. Make sure the crankshaft sprocket timing mark is aligned with the tension set mark. Loosen the tensioner lockbolt and allow the spring to apply tension to the belt. Tighten the tensioner lockbolt to 38 ft. lbs. (52 Nm).
  2.  
  3. On 1993-94 vehicles, install the pulley boss and lockbolt.
  4.  
  5. Turn the crankshaft 2 1 / 6 turns clockwise and make sure the timing marks are correctly aligned.
  6.  



Click image to see an enlarged view

Fig. Fig. 10: Check the deflection of the timing belt to ensure proper tension has been set on the belt

  1. Apply approximately 22 lbs. pressure to the timing belt at a point midway between the camshaft sprockets. The belt should deflect 0.35-0.45 in. (9.0-11.5mm). If the deflection is not correct, repeat Steps 21-24.
  2.  
  3. On 1993-94 vehicles, hold the pulley boss with a suitable tool and tighten the lockbolt to 123 ft. lbs. (21 Nm).
  4.  
  5. Install the timing belt covers and tighten the bolts to 95 inch lbs. (11 Nm). Install the engine oil dipstick.
  6.  
  7. Install the spark plugs and connect the spark plug wires.
  8.  
  9. Install the timing belt inner guide plate, if equipped. Make sure the dished side of the plate faces away from the timing belt. Install the outer guide plate, if equipped.
  10.  
  11. Install the crankshaft pulley and tighten the bolts to 13 ft. lbs. (17 Nm).
  12.  
  13. Install the water pump pulley and the accessory drive belts. Adjust the belt tension.
  14.  
  15. Install the engine side or undercover, as necessary. Connect the negative battery cable.
  16.  
  17. Start the engine and check for proper operation. Check the ignition timing.
  18.  

1995 1.6L, 1995-98 1.5L and 1.8L (except K8) DOHC Engines

See Figures 9, 11, 12, 13, 14, 15 and 16

  1. Disconnect the negative battery cable.
  2.  
  3. Remove the timing belt covers.
  4.  
  5. Turn the crankshaft until the timing mark on the crankshaft sprocket aligns with the timing mark on the oil pump.
  6.  
  7. On the 1.5L engine, ensure that the Z mark on the camshaft sprocket is pointing straight up and the two notches are even with the valve cover gasket surface.
  8.  
  9. On the 1.6 and 1.8L engines, align the E and the I marks on the camshaft sprockets are aligned with the marks on the backing plate (they should point down and towards each other at approximately a 45° angle).
  10.  



Click image to see an enlarged view

Fig. Fig. 11: Cam and crankshaft sprocket alignment marks for the 1995 1.6L and 1995-98 1.8L (except K8) DOHC engines



Click image to see an enlarged view

Fig. Fig. 12: Cam and crankshaft sprocket alignment marks for the 1.5L engine

  1. Remove the crankshaft pulley lockbolt and pulley boss.
  2.  
  3. Lower the vehicle. Insert a camshaft sprocket holding tool between the camshaft sprockets.
  4.  
  5. Loosen the tensioner pulley lockbolt. Pull the tensioner pulley away from the center of the engine to reduce the tension on the timing belt.
  6.  



Click image to see an enlarged view

Fig. Fig. 13: Loosen the tensioner lockbolt and pull it away from the belt to reduce the tension on it

  1. If the timing belt is to be reused, mark the direction of rotation on the timing belt. Remove the timing belt.
  2.  
  3. To remove the tensioner, unhook the tensioner spring, and remove the pulley lockbolt and tensioner.
  4.  
  5. If necessary to remove the sprockets:
    1. Hold the camshaft by using a wrench on the cast hexagon, and loosen the sprocket mounting bolt.
    2.  
    3. Remove the sprocket bolt and the sprocket from the camshaft.
    4.  
    5. If equipped with a manual transaxle, place the shift lever in 4th gear and apply the parking brake. If equipped with an automatic transaxle, remove the flywheel dust cover and install a flywheel locking tool to hold the flywheel.
    6.  
    7. Remove the crankshaft sprocket bolt, sprocket and key.
    8.  

  6.  

To install:
  1. On the 1.5L engine, install the camshaft sprocket, aligning the dowel with the letter Z mark.
  2.  
  3. On the 1.6L and 1.8L engine, install the camshaft sprocket, aligning the dowel (which should be pointing straight up) with the letter I mark on the intake side, and the letter E mark on the exhaust side.
  4.  
  5. Install the camshaft sprocket bolt. Hold the camshaft, on the cast hexagon, with the wrench and tighten the bolt to 37-44 ft. lbs. (50-60 Nm).
  6.  
  7. Install the crankshaft sprocket and key. Align the keyway with the timing mark on the oil pump housing.
  8.  
  9. Install the crankshaft sprocket bolt. Install the flywheel locking tool, if equipped with automatic transaxle, or place the shift lever in 4th gear and apply the parking brake, if equipped with manual transaxle. Tighten the bolt to 116-122 ft. lbs. (11-20 Nm).
  10.  



Click image to see an enlarged view

Fig. Fig. 14: Install the timing belt onto the sprockets following the numbered sequence for 1995 1.6L and 1995-98 1.8L engines



Click image to see an enlarged view

Fig. Fig. 15: Install the timing belt onto the sprockets following the numbered sequence for the 1.5L engine

  1. Make sure the timing marks on the camshaft and crankshaft sprockets are still aligned.
  2.  
  3. If removed, position the tensioner with the spring fully extended, and install the lockbolt tightening the mounting bolt to 28-38 ft. lbs. (38-51 Nm).
  4.  
  5. Install the timing belt. If reusing the original timing belt, make sure it is installed in the same direction of rotation.
  6.  
  7. Rotate the crankshaft clockwise 1 5 / 6 turns and align the timing marks. Make sure all marks are still correctly aligned.
  8.  



Click image to see an enlarged view

Fig. Fig. 16: Measure the timing belt deflection to determine if the proper tension has been set

  1. Loosen the tensioner lockbolt to apply tension to the timing belt. Tighten the tensioner lockbolt to 28-38 ft. lbs. (38-51 Nm). Remove the holding tool from between the camshaft sprockets.
  2.  
  3. Rotate the crankshaft clockwise 2 1 / 6 turns and make sure all marks are still correctly aligned.
  4.  
  5. Raise and safely support the vehicle. Install the crankshaft pulley lockbolt and boss. Tighten the bolt to 116-122 ft. lbs. (11-20 Nm).
  6.  
  7. Install the timing belt covers.
  8.  
  9. Connect the negative battery cable.
  10.  

2.0L Engine

See Figures 17 through 29

  1. Disconnect the negative battery cable.
  2.  
  3. Remove the timing belt covers. Temporarily reinstall the crankshaft pulley bolt.
  4.  



Click image to see an enlarged view

Fig. Fig. 17: To remove the timing belt, first remove the timing belt cover then, using a jack and block of wood, support the engine



Click image to see an enlarged view

Fig. Fig. 18: Next, loosen and remove the engine mount-to-engine block attaching bolts ...



Click image to see an enlarged view

Fig. Fig. 19: ... as well as the mount-to-body through-bolt ...



Click image to see an enlarged view

Fig. Fig. 20: ... and remove the engine mount



Click image to see an enlarged view

Fig. Fig. 21: Mark the direction of rotation on the timing belt in case you need to re-install the original belt



Click image to see an enlarged view

Fig. Fig. 22: Cam and crankshaft sprocket alignment positions for the 2.0L engine

  1. Remove the front engine mount by supporting the engine then remove the mount attaching bolts and the mount.
  2.  



Click image to see an enlarged view

Fig. Fig. 23: Rotate the crankshaft until the timing marks (arrows) on the camshaft sprockets align with each other

  1. Turn the crankshaft until the timing mark on the crankshaft sprocket aligns with the timing mark on the oil pump and the camshaft sprocket timing marks, E and I , line up on the camshaft sprockets.
  2.  
  3. Insert a camshaft sprocket holding tool between the camshaft sprockets.
  4.  



Click image to see an enlarged view

Fig. Fig. 24: Loosen the lockbolt on the timing belt tensioner



Click image to see an enlarged view

Fig. Fig. 25: Turn the timing belt tensioner with an Allen wrench and remove the tensioner spring from the hook pin



Click image to see an enlarged view

Fig. Fig. 26: Space may be limited when trying to turn the tensioner with the Allen wrench (arrow) ...



Click image to see an enlarged view

Fig. Fig. 27: ... or when trying to detach the tensioner spring from the hook pin (arrow)

  1. Turn the timing belt tensioner with an Allen wrench and remove the tensioner spring from the hook pin.
  2.  
  3. If the timing belt is to be reused, mark the direction of rotation on the timing belt. Remove the timing belt.
  4.  



Click image to see an enlarged view

Fig. Fig. 28: Remove the timing belt from the sprockets and examine it. Refer to Section 1 for examples



Click image to see an enlarged view

Fig. Fig. 29: If necessary, or in case of high mileage, remove the tensioner pulley by removing the lockbolt

  1. If necessary to remove the sprockets:
    1. Hold the camshaft by using a wrench on the cast hexagon, and loosen the sprocket mounting bolt.
    2.  
    3. Remove the sprocket bolt and the sprocket from the camshaft.
    4.  
    5. If equipped with a manual transaxle, place the shift lever in 4th gear and apply the parking brake. If equipped with an automatic transaxle, remove the flywheel dust cover and install a flywheel locking tool to hold the flywheel.
    6.  
    7. Remove the crankshaft sprocket bolt, sprocket and key.
    8.  

  2.  

To install:
  1. Install the camshaft sprocket, aligning the dowel with the number 1 mark.
  2.  
  3. Install the camshaft sprocket bolt. Hold the camshaft, on the cast hexagon, with the wrench and tighten the bolt to 35-48 ft. lbs. (47-65 Nm).
  4.  
  5. Install the crankshaft sprocket and key. Align the keyway with the timing mark on the oil pump housing.
  6.  
  7. Install the crankshaft sprocket bolt. Install the flywheel locking tool, if equipped with automatic transaxle, or place the shift lever in 4th gear and apply the parking brake, if equipped with manual transaxle. Tighten the bolt to 108-116 ft. lbs. (1-11 Nm).
  8.  
  9. Make sure the timing marks on the camshaft and crankshaft sprockets are still aligned.
  10.  
  11. Install the timing belt. If reusing the original timing belt, make sure it is installed in the same direction of rotation.
  12.  
  13. Turn the tensioner clockwise with an Allen wrench and install the tensioner spring. Remove the holding tool from between the camshaft sprockets.
  14.  
  15. Rotate the crankshaft 2 turns in the normal direction of rotation and align the timing marks. Make sure all marks are still correctly aligned.
  16.  
  17. Remove the crankshaft pulley bolt and install the timing belt covers.
  18.  
  19. Connect the negative battery cable.
  20.  

1.8L (K8) and 2.5L (626/MX-6/Probe) Engines

See Figures 30 through 39

  1. Disconnect the negative battery cable.
  2.  
  3. Support the engine, and remove the nuts and through-bolt from the right side engine mount Remove the mount.
  4.  
  5. Remove the timing belt covers. Temporarily reinstall the crankshaft pulley bolt.
  6.  



Click image to see an enlarged view

Fig. Fig. 30: Camshaft sprocket alignment marks for the 1.8L (K8) and 2.5L engines



Click image to see an enlarged view

Fig. Fig. 31: Crankshaft sprocket alignment marks for the 1.8L (K8) and 2.5L engines

  1. Turn the crankshaft until the timing mark on the crankshaft sprocket aligns with the timing mark on the oil pump and the camshaft sprocket timing marks align with the marks on the cylinder head. The number one piston should be at TDC of the compression stroke.
  2.  
  3. Remove the 2 bolts from the automatic tensioner, removing the lower one first. Keep the bolt holes aligned by holding the tensioner to reduce the chance of stripping the threads on the bolts.
  4.  
  5. If the timing belt is to be reused, mark the direction of rotation on the timing belt.
  6.  
  7. Remove the number one idler pulley. Remove the timing belt.
  8.  
  9. If necessary, remove the sprockets as follows:
    1. Insert a proper tool through one of the camshaft sprocket holes to keep it from turning.
    2.  
    3. Remove the sprocket bolt and the sprocket from the camshaft.
    4.  
    5. If equipped with a manual transaxle, place the shift lever in 4th gear and apply the parking brake. If equipped with an automatic transaxle, remove the flywheel dust cover and install a flywheel locking tool to hold the flywheel.
    6.  
    7. Remove the crankshaft sprocket bolt, sprocket and key.
    8.  

  10.  

To install:
  1. Install the camshaft sprockets (which are marked (R) Right and (L) Left), aligning the dowel on the camshaft with the slot on the sprocket.
  2.  
  3. Install the camshaft sprocket bolt. Hold the sprocket with a suitable tool and tighten the bolt to 35-48 ft. lbs. (47-65 Nm).
  4.  
  5. Install the crankshaft sprocket and key. Align the keyway with the timing mark on the oil pump housing.
  6.  
  7. Install the crankshaft sprocket bolt. Install the flywheel locking tool, if equipped with automatic transaxle, or place the shift lever in 4th gear and apply the parking brake, if equipped with manual transaxle. Tighten the bolt to 116-122 ft. lbs. (11-20 Nm).
  8.  



Click image to see an enlarged view

Fig. Fig. 32: Position the automatic tensioner in a press and set a flat washer under the tensioner body to prevent damage to the body plug



Click image to see an enlarged view

Fig. Fig. 33: Compress the tensioner until the hole in the piston is aligned with the 2nd hole in the case. Insert a pin to keep it compressed



Click image to see an enlarged view

Fig. Fig. 34: Install the tensioner to the engine and snugly tighten the upper bolt. This will reduce belt tension when installing the upper idler

  1. Position the automatic tensioner in a suitable press. Set a flat washer under the tensioner body to prevent damage to the body plug.
  2.  
  3. Compress the tensioner until the hole in the piston is aligned with the 2nd hole in the tensioner case. Insert a 0.063 in. (1.6mm) diameter wire or pin through the 2nd hole to keep the piston compressed.
  4.  
  5. Make sure the camshaft sprocket timing marks are still aligned. Turn the crankshaft counterclockwise until the timing sprocket is offset from TDC by 1 tooth.
  6.  



Click image to see an enlarged view

Fig. Fig. 35: Install the timing belt onto the sprockets in the sequence shown



Click image to see an enlarged view

Fig. Fig. 36: Then install the upper idler pulley while pushing downward on the belt



Click image to see an enlarged view

Fig. Fig. 37: Pull outward on the lower half of the tensioner and install the lower mounting bolt. Tighten both bolts to specification



Click image to see an enlarged view

Fig. Fig. 38: Once the tensioner is properly tightened, remove the pin which is holding the piston compressed in the tensioner case



Click image to see an enlarged view

Fig. Fig. 39: Check for proper belt tension by measuring the belt deflection at the point indicated

  1. With the number one idler pulley removed, install the timing belt. If the original belt is being reused, make sure it is installed in the same direction of rotation. The order of installation is: timing belt (crankshaft) sprocket, number two idler pulley, LH camshaft sprocket, tensioner pulley and RH camshaft sprocket.
  2.  
  3. Install the number one idler pulley while applying pressure on the timing belt. Tighten the bolt to 28-38 ft. lbs. (38-51 Nm).
  4.  
  5. Install the automatic belt tensioner and tighten the bolts to 14-18 ft. lbs. (19-25 Nm). Remove the wire or pin from the tensioner.
  6.  
  7. Rotate the crankshaft 2 turns in the normal direction of rotation and align the timing marks. Make sure all marks are still correctly aligned.
  8.  
  9. Inspect the timing belt deflection, 0.24-0.31 ft. lbs. (6-8mm), between the crankshaft sprocket and the tensioner pulley. If it is out of specification, replace the auto tensioner.
  10.  
  11. Remove the crankshaft damper bolt and install the timing belt covers.
  12.  
  13. Install the right side engine mount. Tighten the nuts to 55-77 ft. lbs. (75-104 Nm) and the through-bolt to 63-86 ft. lbs. (86-116 Nm). Remove the engine support.
  14.  
  15. Connect the negative battery cable.
  16.  

2.5L (Millenia) Engine

See Figures 30 through 39

  1. Disconnect the negative battery cable.
  2.  
  3. Remove the timing belt covers. Temporarily reinstall the crankshaft pulley bolt.
  4.  
  5. Support the engine, and remove the nuts and through-bolt from the right side (number three) engine mount sub bracket. Remove the sub bracket.
  6.  
  7. Turn the crankshaft until the timing mark on the crankshaft sprocket aligns with the timing mark on the oil pump and the camshaft sprocket timing marks align with the marks on the cylinder head. The number one piston should be at TDC of the compression stroke.
  8.  
  9. Remove the two bolts from the automatic tensioner, removing the lower one first. Keep the bolt holes aligned by holding the tensioner to reduce the chance of stripping the threads on the bolts.
  10.  
  11. If the timing belt is to be reused, mark the direction of rotation on the timing belt.
  12.  
  13. Remove the number one idler pulley. Remove the timing belt.
  14.  
  15. If necessary to remove the sprockets:
    1. Insert a proper tool through one of the camshaft sprocket holes to keep it from turning.
    2.  

  16.  

The right and left camshaft sprockets are different and need to be installed on the same camshaft from which they were removed.

  1. Remove the sprocket bolt and the sprocket from the camshaft.
  2.  
  3. Remove the flywheel dust cover and install a flywheel locking tool to hold the flywheel.
  4.  
  5. Remove the crankshaft sprocket bolt, sprocket and key.
  6.  

To install:
  1. Install the camshaft sprocket so that the R (on right-hand) and L (on left-hand) face out, and align the timing marks with the knock/dowel pin.
  2.  
  3. Apply clean engine oil to the bolt threads, and install the camshaft sprocket bolt. Hold the sprocket with a suitable tool and tighten the bolt to 91-103 ft. lbs. (123-140 Nm).
  4.  
  5. Install the crankshaft sprocket and key. Align the keyway with the timing mark on the oil pump housing.
  6.  
  7. Install the crankshaft sprocket bolt. Install the flywheel locking tool. Tighten the bolt to 116-122 ft. lbs. (11-20 Nm). remove the flywheel locking tool.
  8.  
  9. Position the automatic tensioner in a suitable press. Set a flat washer under the tensioner body to prevent damage to the body plug.
  10.  
  11. Compress the tensioner until the hole in the piston is aligned with the 2nd hole in the tensioner case. Insert a 0.060 in. (1.6 mm) diameter wire or pin through the 2nd hole to keep the piston compressed.
  12.  
  13. Make sure the camshaft sprocket timing marks are still aligned. Turn the crankshaft counterclockwise until the timing sprocket is aligned.
  14.  
  15. With the number one idler pulley removed, install the timing belt. If the original belt is being reused, make sure it is installed in the same direction of rotation. The order of installation is: timing belt (crankshaft) sprocket, number two idler pulley, LH camshaft sprocket, tensioner pulley and RH camshaft sprocket.
  16.  
  17. Install the number one idler pulley while applying pressure on the timing belt. Tighten the bolt to 28-38 ft. lbs. (38-51 Nm).
  18.  
  19. Install the automatic belt tensioner and tighten the bolts to 14-18 ft. lbs. (19-25 Nm). Remove the wire or pin from the tensioner.
  20.  
  21. Turn the crankshaft clockwise, until the crankshaft sprocket timing mark is again at TDC. This should place all of the belt slack in the automatic tensioner portion of the belt.
  22.  
  23. Rotate the crankshaft 2 turns in the normal direction of rotation and align the timing marks. Make sure all marks are still correctly aligned.
  24.  
  25. Inspect the timing belt deflection, 0.24-0.31 in. (6-8 mm), between the crankshaft sprocket and the tensioner pulley. If it is out of specification, replace the auto tensioner.
  26.  
  27. Install the right side (number three) engine mount sub bracket. Tighten the nuts to 55-77 ft. lbs. (75-104 Nm) and the through-bolt to 63-86 ft. lbs. (86-116 Nm). Remove the engine support.
  28.  
  29. Remove the crankshaft damper bolt and install the timing belt covers.
  30.  
  31. Connect the negative battery cable. Start the engine, and check the ignition timing.
  32.  

2.3L Engine

See Figures 32, 33, 34, 38, 40, 41, 42 and 43

  1. Disconnect the negative battery cable.
  2.  
  3. Remove the timing belt covers. Temporarily reinstall the crankshaft pulley bolt.
  4.  
  5. Remove the power steering auto tensioner and pulley.
  6.  
  7. Turn the crankshaft until the timing mark on the crankshaft sprocket aligns with the timing mark on the oil pump and the camshaft sprocket timing marks align with the marks on the cylinder head. The number one piston should be at TDC of the compression stroke.
  8.  



Click image to see an enlarged view

Fig. Fig. 40: Camshaft sprocket alignment marks for the 2.3L engine



Click image to see an enlarged view

Fig. Fig. 41: Crankshaft sprocket timing marks for the 2.3L engine

  1. Remove the two bolts from the automatic tensioner, removing the lower one first. Keep the bolt holes aligned by holding the tensioner to reduce the chance of stripping the threads on the bolts.
  2.  
  3. If the timing belt is to be reused, mark the direction of rotation on the timing belt.
  4.  
  5. Remove the timing belt.
  6.  
  7. If necessary to remove the sprockets:
    1. Insert a proper tool through one of the camshaft sprocket holes to keep it from turning.
    2.  

  8.  

The right and left camshaft sprockets are different and need to be installed on the same camshaft from which they were removed.

  1. Remove the sprocket bolt and the sprocket from the camshaft.
  2.  
  3. Remove the flywheel dust cover and install a flywheel locking tool to hold the flywheel.
  4.  
  5. Remove the crankshaft sprocket bolt, sprocket and key.
  6.  

To install:
  1. Install the camshaft sprocket so that the R (on right-hand) and L (on left-hand) face out, and align the timing marks with the knock/dowel pin.
  2.  
  3. Apply clean engine oil to the bolt threads, and install the camshaft sprocket bolt. Hold the sprocket with a suitable tool and tighten the bolt to 91-103 ft. lbs. (123-140 Nm).
  4.  
  5. Install the crankshaft sprocket and key. Align the keyway with the timing mark on the oil pump housing.
  6.  
  7. Install the crankshaft sprocket bolt. Install the flywheel locking tool. Tighten the bolt to 116-122 ft. lbs. (11-20 Nm). remove the flywheel locking tool.
  8.  
  9. Position the automatic tensioner in a press. Set a flat washer under the tensioner body to prevent damage to the body plug.
  10.  
  11. Compress the tensioner until the hole in the piston is aligned with the 2nd hole in the tensioner case. Insert a 0.063 inch (1.6 mm) diameter wire or pin through the 2nd hole to keep the piston compressed.
  12.  
  13. Make sure the camshaft sprocket timing marks are still aligned. Turn the crankshaft clockwise until the timing sprocket is aligned.
  14.  



Click image to see an enlarged view

Fig. Fig. 42: Install the timing belt onto the sprockets in the sequence shown

  1. Install the timing belt. If the original belt is being reused, make sure it is installed in the same direction of rotation. The order of installation is: timing belt (crankshaft) sprocket, number two idler pulley, LH camshaft sprocket, both number one idler pulleys, RH camshaft sprocket and the tensioner pulley.
  2.  
  3. Install the automatic belt tensioner and tighten the bolts to 14-18 ft. lbs. (19-25 Nm). Remove the wire or pin from the tensioner.
  4.  
  5. Turn the crankshaft clockwise, until the crankshaft sprocket timing mark is again at TDC. This should place all of the belt slack in the automatic tensioner portion of the belt.
  6.  
  7. Rotate the crankshaft two turns in the normal direction of rotation and align the timing marks. Make sure all marks are still correctly aligned.
  8.  



Click image to see an enlarged view

Fig. Fig. 43: Inspect the timing belt tension by measuring the deflection at the point shown

  1. Inspect the timing belt deflection, 0.24-0.31 inches (6-8 mm), between the crankshaft sprocket and the tensioner pulley. If it is out of specification, replace the auto tensioner.
  2.  
  3. Install the power steering auto tensioner and tighten the bolts to 14-18 ft. lbs. (19-25 Nm). Install the pulley, and tighten the bolt to 29-34 ft. lbs. (40-47 Nm).
  4.  
  5. Remove the crankshaft damper bolt and install the timing belt covers.
  6.  
  7. Connect the negative battery cable. Start the engine, and check the ignition timing.
  8.  

 
label.common.footer.alt.autozoneLogo