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    Acura Coupes and Sedans 1986-1993 Repair Guide

    Timing Belt And Tensioner

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    ADJUSTMENT



    Integra and Vigor

    Always adjust the timing belt tension with the engine cold. The tensioner is spring-loaded to apply the proper tension to the belt automatically after making the following adjustments.

    1. Turn the crankshaft pulley until the No. 1 piston is at TDC of the compression stroke.
    2.  
    3. Loosen the adjusting bolt on the tensioner pulley.
    4.  
    5. Rotate the crankshaft counterclockwise 3 teeth on the camshaft pulley to create tension on the timing belt.
    6.  
    7. Torque the adjusting bolt on the tensioner pulley to 33 ft. lbs. (45 Nm).
    8.  
    9. If the crankshaft pulley bolt broke loose while turning the crank, torque it as follows:
      1. 1986-90 Integra: 119 ft. lbs. (161 Nm)
      2.  
      3. 1991-93 Integra: 130 ft. lbs. (180 Nm)
      4.  
      5. Vigor: 181 ft. lbs. (250 Nm)
      6.  

    10.  

    Legend

    Always adjust the timing belt tension with the engine cold. The tensioner is spring-loaded to apply the proper tension to the belt automatically after making the following adjustments.

    1. Turn the crankshaft pulley until No. 1 is at TDC of the compression stroke.
    2.  
    3. Rotate the crankshaft clockwise 9 teeth on the camshaft pulley. The blue mark on the camshaft pulley should line up with the pointer on the lower cover.
    4.  
    5. Loosen the adjusting bolt about 1 / 2 turn. The spring will automatically provide the correct belt tension.
    6.  
    7. Torque the adjusting bolt to 31 ft. lbs. (43 Nm).
    8.  

    REMOVAL & INSTALLATION



    1986-90 Integra

    See Figures 1 and 2

    1. Rotate the crankshaft pulley until No. 1 piston is at TDC of the compression stroke.
    2.  
    3. Remove the alternator belt, the power steering belt, and the air conditioning belt, crankshaft pulley and timing belt cover. Mark the direction of the belt rotation.
    4.  
    5. Loosen the tensioner adjusting bolt 1 / 2 turn, push the tensioner pulley to release belt tension, then tighten the bolt again.
    6.  
    7. Slide the timing belt off the camshaft sprockets, crankshaft sprocket and the water pump sprocket; remove it from the engine.
    8.  
    9. Inspect the timing belt; replace it if it is worn. If it is oil soaked, replace it and find the source of the oil leak. Check the condition of the water pump.
    10.  

    To install:
    1. Make sure the camshaft and crankshaft are properly positioned, install the new belt and adjust the tension.
    2.  
    3. Temporarily install the crankshaft pulley and bolt and turn the engine 2 full revolutions. Check that the crankshaft pulley and camshaft sprocket marks are still properly aligned. If not, adjust as necessary.
    4.  
    5. When the timing belt is properly installed and adjusted, remove the crankshaft pulley, install the timing belt cover and install the pulley. Torque the bolt to 119 ft. lbs. (161 Nm).
    6.  



    Click image to see an enlarged view

    Fig. Fig. 1: Timing belt and cover assembly mounting-1986-90 Integra



    Click image to see an enlarged view

    Fig. Fig. 2: Timing mark positioning for timing belt installation-1986-90 Integra

    1991-93 Integra

    See Figures 3, 4 and 5

    1. Raise and safely support the vehicle. Remove the left front wheel and remove the wheel well splash guard.
    2.  
    3. Remove the power steering belt and power steering pump. Do not disconnect the power steering fluid lines.
    4.  
    5. Remove the air conditioning belt and the alternator belt.
    6.  
    7. Remove the left side engine mount.
    8.  
    9. Remove the valve cover.
    10.  
    11. Remove the middle timing belt cover.
    12.  
    13. Set the crankshaft to TDC of the No. 1 piston: the white crankshaft pulley mark should be aligned with the pointer on the cover and the camshaft sprockets UP mark should be facing upward, sprocket timing marks aligned.
    14.  
    15. Remove the special crankshaft pulley bolt and the crankshaft pulley.
    16.  
    17. Remove the lower timing belt cover.
    18.  



    Click image to see an enlarged view

    Fig. Fig. 3: Timing belt and cover assembly mounting-1991-93 Integra



    Click image to see an enlarged view

    Fig. Fig. 4: Timing mark positioning for timing belt installation-1991-93 Integra 1.8L



    Click image to see an enlarged view

    Fig. Fig. 5: Timing mark positioning for timing belt installation-1991-93 Integra 1.7L

    1. Loosen but do not remove the tensioner adjusting bolt, push the tensioner to slacken the timing belt, then retighten the bolt. If the timing belt is to be reinstalled, mark the direction of rotation. Remove the timing belt.
    2.  

    To install:
    1. Install the timing belt with the No. 1 piston at TDC on its compression stroke. To set the camshafts to the top dead center position for No. 1 cylinder, align the hole in the camshafts with the holes in the No. 1 camshaft holders and push a 5.0mm pin punches into the holes.
    2.  
    3. Install the timing belt. If installing the old belt, make sure it is turning the same direction.
    4.  
    5. Make sure the timing belt is properly installed on the crankshaft and that the front oil seal does not leak. Replace the cover and crankshaft pulley and carefully oil the threads of the pulley bolt without getting oil on the washer. Torque the bolt in 3 steps: 145 ft. lbs. (200 Nm), then loosen the bolt completely, then re-torque to 130 ft. lbs. (180 Nm).
    6.  
    7. Make sure the camshaft sprockets and crankshaft pulley are properly aligned with the timing marks. Loosen the tensioner bolt about 1 / 2 turn, then torque to 40 ft. lbs. (55 Nm). Tension adjustment is automatically accomplished with the spring on the tensioner. Check timing mark alignment again.
    8.  
    9. Install the remaining parts in reverse order. Torque the engine mount-to-engine bolt and nut to 54 ft. lbs. (75 Nm), torque the mount-to-body bolt to 40 ft. lbs. (55 Nm).
    10.  

    1986-90 Legend

    See Figures 6 and 7

    1. Disconnect the negative battery cable. Remove the pulley cover and the harness cover from above the timing belt upper cover.
    2.  
    3. Remove the engine sub-harness clamp.
    4.  
    5. Remove the engine support bolts, loosen the side mount rubber and raise the side mount bracket.
    6.  

    A suitable lifting device or chain hoist should be used to raise and support the engine. Do not jack on the oil pan.

    1. Remove the lower splash guard.
    2.  
    3. Loosen the air conditioning idler pulley adjusting bolt and remove the compressor belt.
    4.  
    5. Remove the alternator adjusting bolt, the mounting bolt, the drive belt and the alternator.
    6.  
    7. Remove the power steering pump bolt, the mounting bolt, the drive belt and the power steering pump. It may be necessary to disconnect the hydraulic hoses.
    8.  
    9. Remove the front and rear upper covers.
    10.  
    11. Make sure the crankshaft is set to TDC No. 1 piston. Remove the special bolt and the crankshaft pulley.
    12.  
    13. Remove the lower cover.
    14.  
    15. Loosen but do not remove the tensioner adjusting bolt, push the tensioner to slacken the timing belt, then retighten the bolt. If the timing belt is to be reinstalled, mark the direction of rotation. Remove the timing belt.
    16.  

    Do not rotate the crankshaft or camshafts with the belt removed. The pistons will contact the valves and cause engine damage.

    1. Inspect the timing belt. Replace it if it is oil soaked or worn. Find and repair the source of the oil leak.
    2.  

    To install:
    1. If the crankshaft or camshafts have been turned with the timing belt removed, remove the spark plugs and advance the crankshaft about 15 degrees beyond TDC of No. 1 cylinder. Make sure the camshaft sprockets are properly aligned with the marks and return the crankshaft to the TDC mark.
    2.  
    3. Install the belt in sequence on the crankshaft, the front camshaft, water pump and tensioner pulleys, then the rear camshaft.
    4.  
    5. To adjust the tension, loosen the tensioner pulley bolt about 1 / 2 turn. The spring will automatically set the proper tension. Torque the bolt to 31 ft. lbs. (43 Nm).
    6.  
    7. Rotate the crankshaft 6 turns clockwise and check that the timing marks on the crankshaft and camshafts align properly. Adjust the timing belt tension again by rotating the crankshaft to the align the blue mark on the pulley with the pointer. Loosen and retorque the tensioner pulley bolt.
    8.  
    9. Install the remaining parts in reverse order. Torque the crankshaft pulley bolt to 83 ft. lbs. (115 Nm). When installing the side mount bracket, torque the bolts to 40 ft. lbs. (55 Nm).
    10.  



    Click image to see an enlarged view

    Fig. Fig. 6: Timing belt and cover assembly mounting-1986-90 Legend



    Click image to see an enlarged view

    Fig. Fig. 7: Timing mark positioning for timing belt installation-1986-90 Legend

    1991-93 Legend

    See Figures 8 and 9

    1. Disconnect the negative battery cable.
    2.  
    3. Remove the engine wiring harness covers and the wiring harness from the front of the engine.
    4.  
    5. Remove the breather pipe and vacuum pipe bracket.
    6.  
    7. Remove the drive belts for the alternator, air conditioner and power steering pump.
    8.  
    9. Remove the upper timing belt covers.
    10.  
    11. Rotate the crankshaft to TDC No. 1 piston. The white mark on the crankshaft pulley will be aligned with the pointer on the lower cover, and the camshaft sprocket marks will be aligned with the yellow marks on the rear covers.
    12.  
    13. Remove the crankshaft pulley and the air conditioner belt tensioner pulley.
    14.  
    15. Remove the dip stick tube. Remove the lower timing belt cover.
    16.  
    17. Loosen the timing belt tensioner pulley bolt about 1 / 2 turn and push the pulley to slacken the belt tension. Tighten the bolt and remove the belt. If the belt is to be reinstalled, mark the direction of rotation.
    18.  

    Do not rotate the crankshaft or camshafts with the belt removed. The pistons will contact the valves and cause engine damage.

    To install:
    1. If the belt is worn or oil soaked, it must be replaced. Find and repair the source of the oil leak before installing a new belt.
    2.  
    3. If the crankshaft or camshafts have been turned with the timing belt removed, remove the spark plugs and advance the crankshaft about 15 degrees beyond TDC of No. 1 cylinder. Make sure the camshaft sprockets are properly aligned with the marks and return the crankshaft to the TDC mark.
    4.  
    5. Install the belt in sequence on the crankshaft, adjuster pulley, the left camshaft, water pump, then the right camshaft.
    6.  
    7. To adjust the tension, loosen the tensioner pulley bolt about 1 / 2 turn. The spring will automatically set the proper tension. Torque the bolt to 31 ft. lbs. (43 Nm).
    8.  
    9. Rotate the crankshaft 6 turns clockwise and check that the timing marks on the crankshaft and camshafts align properly. Adjust the timing belt tension again by rotating the crankshaft to the align the blue mark on the pulley with the pointer. Loosen and retorque the tensioner pulley bolt.
    10.  
    11. When installing the crankshaft pulley, oil the threads of the bolt without getting oil on the washer. Torque the bolt to 174 ft. lbs. (240 Nm).
    12.  
    13. Installation of the remaining parts is the reverse of removal.
    14.  



    Click image to see an enlarged view

    Fig. Fig. 8: Timing belt and cover assembly mounting-1991-93 Legend



    Click image to see an enlarged view

    Fig. Fig. 9: Timing mark positioning for timing belt installation-1991-93 Legend

    Vigor

    See Figures 10 and 11

    The radio is equipped with a theft protection program. Be sure the 5 digit security code is available before disconnecting the battery.

    1. Disconnect the negative battery cable.
    2.  
    3. Label and disconnect the engine wiring as required.
    4.  
    5. Loosen the adjusting bolts and remove the accessory drive belts.
    6.  
    7. Remove the cylinder head cover.
    8.  
    9. Remove the timing belt upper cover.
    10.  
    11. Rotate the crankshaft to align the white timing mark on the crankshaft pulley with the pointer on the lower cover. Make sure the UP mark and the TDC marks on the camshaft sprocket are correctly positioned.
    12.  
    13. Remove the center bolt from the crankshaft and remove the crankshaft pulley.
    14.  
    15. Turn the crankshaft to align the white TDC mark with the pointer, then remove the lower timing belt cover. Make sure the UP mark on the camshaft sprocket is correctly positioned.
    16.  
    17. Mark the direction of rotation of the timing belt. Loosen the tensioner and remove the belt.
    18.  

    To install:
    1. Install the belt on the crankshaft sprocket, tensioner, water pump, then the camshaft sprocket. If the old belt is being installed, make sure it will turn the same direction.
    2.  
    3. Loosen the tensioner bolt to allow the spring to set the tension, then tighten the bolt. Rotate the crankshaft 6 full turns to seat the belt and make sure the timing marks align properly.
    4.  
    5. Install the lower cover but do not fully tighten the bolts yet.
    6.  
    7. Install the crankshaft pulley and without getting oil on the washer, oil the threads on the bolt. Torque the bolt to 181 ft. lbs. (250 Nm).
    8.  
    9. Install the upper cover and tighten the bolts for both covers.
    10.  
    11. Install the cylinder head cover with new gaskets and O-rings as required.
    12.  
    13. Install and adjust the accessory drive belts.
    14.  
    15. After connecting the battery, enter the radio security code.
    16.  



    Click image to see an enlarged view

    Fig. Fig. 10: Timing belt and cover assembly mounting-Vigor



    Click image to see an enlarged view

    Fig. Fig. 11: Timing mark positioning for timing belt installation-Vigor

     
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