Mazda Trucks 1994-1998 Repair Guide

Distributor

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REMOVAL & INSTALLATION



Navajo and B Series Pick-up Models

See Figures 1 and 2



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Fig. Fig. 1: Exploded view of the distributor mounted ICM distributor



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Fig. Fig. 2: Example of the remote mounted ICM distributor

  1. Rotate the engine until the No. 1 piston is on Top Dead Center (TDC) of its compression stroke.
  2.  
  3. Disconnect the negative battery cable. Disconnect the vehicle wiring harness connector from the distributor. Before removing the distributor cap, mark the position of the No. 1 wire tower on the cap for reference.
  4.  
  5. Loosen the distributor cap hold-down screws and remove the cap. Matchmark the position of the rotor to the distributor housing. Position the cap and wires out of the way.
  6.  
  7. Scribe a mark in the distributor body and the engine block to indicate the position of the distributor in the engine.
  8.  
  9. Remove the distributor hold-down bolt and clamp.
  10.  

Some engines may be equipped with a security-type distributor hold-down bolt. If this is the case, use distributor wrench T82L-12270-A or equivalent, to remove the retaining bolt and clamp.

  1. Remove the distributor assembly from the engine. Be sure not to rotate the engine while the distributor is removed.
  2.  

To install:
  1. Make sure that the engine is still with the No. 1 piston up on TDC of its compression stroke.
  2.  

If the engine was disturbed while the distributor was removed, it will be necessary to remove the No. 1 spark plug and rotate the engine clockwise until the No. 1 piston is on the compression stroke. Align the timing pointer with TDC on the crankshaft damper or flywheel, as required.

  1. Check that the O-ring is installed and in good condition on the distributor body.
  2.  
  3. On all vehicles:
    1. Rotate the distributor shaft so the rotor points toward the mark on the distributor housing made previously.
    2.  
    3. Rotate the rotor slightly so the leading edge of the vane is centered in the vane switch state assembly.
    4.  
    5. Rotate the distributor in the block to align the leading edge of the vane with the vane switch stator assembly. Make certain the rotor is pointing to the No. 1 mark on the distributor base.If the vane and vane switch stator cannot be aligned by rotating the distributor in the cylinder block, remove the distributor enough to just disengage the distributor gear from the camshaft gear. Rotate the rotor enough to engage the distributor gear on another tooth of the camshaft gear. Repeat Step 9 if necessary.
    6.  

  4.  
  5. Install the distributor hold-down clamp and bolt(s); tighten them slightly.
  6.  
  7. Attach the vehicle wiring harness connector to the distributor.
  8.  
  9. Install the cap and wires. Install the No. 1 spark plug, if removed.
  10.  
  11. Recheck the initial timing.
  12.  
  13. Tighten the hold-down clamp and recheck the timing. Adjust if necessary.
  14.  

MPV Models
2.6L ENGINE

See Figure 3

  1. Disconnect the negative battery cable.
  2.  
  3. Remove the distributor cap from the distributor, leaving the spark plug wires attached. If spark plug wire removal is necessary to remove the distributor cap, tag the wires prior to removal so they can be reinstalled in the correct position.
  4.  
  5. Disconnect the electrical connectors and vacuum hose(s), if equipped, from the distributor.
  6.  
  7. Mark the position of the rotor in relation to the distributor housing and the position of the distributor housing on the cylinder head.
  8.  
  9. Remove the distributor hold-down bolt(s) and remove the distributor.
  10.  
  11. Check the distributor O-ring for cuts or other damage and replace, if necessary.
  12.  



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Fig. Fig. 3: Distributor installation-2.6L engine

3.0L ENGINE

See Figures 4, 5, 6 and 7



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Fig. Fig. 4: Disengage the distributor electrical connector



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Fig. Fig. 5: Be sure to matchmark the positioning of the distributor at the hold-down bolt



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Fig. Fig. 6: Matchmark the location of the rotor to the distributor assembly



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Fig. Fig. 7: Remove the distributor assembly from out of the vehicle

  1. Disconnect the negative battery cable.
  2.  
  3. Label and remove the spark plug wires.
  4.  
  5. Turn the crankshaft so the No. 1 cylinder is at TDC of compression.
  6.  
  7. Disconnect the electrical connector from the distributor.
  8.  
  9. Mark the position of the rotor in relation to the distributor housing and the position of the distributor housing on the cylinder head.
  10.  
  11. Remove the distributor hold-down bolt(s), then remove the distributor.
  12.  
  13. Check the distributor O-ring for cuts or other damage and replace, if necessary.
  14.  

INSTALLATION



Timing Not Disturbed
2.6L ENGINE
  1. Lubricate the distributor O-ring with clean engine oil.
  2.  
  3. Install the distributor with the hold-down bolt(s), aligning the marks that were made during removal. Tighten the hold-down bolt(s) to 14-19 ft. lbs. (19-25 Nm).
  4.  
  5. Connect the electrical connectors and vacuum hose(s), if equipped.
  6.  
  7. Install the distributor cap on the distributor. Connect the spark plug wires, if removed.
  8.  
  9. Connect the negative battery cable. Start the engine and check the ignition timing.
  10.  

3.0L ENGINE
  1. Lubricate the distributor O-ring with clean engine oil.
  2.  
  3. On the 1996-98, align the matchmarks on the distributor shaft and the distributor drive gear.
  4.  
  5. Install the distributor with the hold-down bolt, aligning the marks that were made during removal. Tighten the hold-down bolt to 14-18 ft. lbs. (19-25 Nm).
  6.  
  7. Connect the electrical connector.
  8.  
  9. Connect the spark plug wires.
  10.  
  11. Connect the negative battery cable. Start the engine and check the ignition timing.
  12.  

Timing Disturbed
2.6L ENGINE
  1. Disconnect the spark plug wire from the No. 1 cylinder spark plug and remove the spark plug. Make sure the engine is cool enough to touch, place a finger over the spark plug hole.
  2.  
  3. Turn the crankshaft in the normal direction of rotation until compression is felt at the spark plug hole.
  4.  
  5. Align the mark on the crankshaft pulley with the TDC mark on the timing belt cover.
  6.  
  7. Lubricate the distributor O-ring with clean engine oil.
  8.  
  9. Turn the distributor shaft until the rotor points to the No. 1 spark plug tower on the distributor cap and install the distributor. Install the distributor hold-down bolt(s) and align the distributor housing with the mark made on the cylinder head during removal. Snug the bolt(s).
  10.  
  11. Connect the electrical connectors and vacuum hose(s), if equipped.
  12.  
  13. Install the distributor cap on the distributor. Connect the spark plug wires, if removed.
  14.  
  15. Install the spark plug in the No. 1 cylinder and connect the spark plug wire.
  16.  
  17. Connect the negative battery cable. Start the engine and adjust the ignition timing. Tighten the distributor hold-down bolt(s) to 14-19 ft. lbs. (19-25 Nm) after the timing has been set.
  18.  

3.0L ENGINE
  1. Disconnect the spark plug wire from the No. 1 cylinder spark plug and remove the spark plug. After making sure the engine is cool enough to touch, place a finger over the spark plug hole.
  2.  
  3. Turn the crankshaft in the normal direction of rotation until compression is felt at the spark plug hole.
  4.  
  5. On the 1996-98, align the mark on the crankshaft pulley with the TDC mark on the timing belt cover.
  6.  
  7. Lubricate the distributor O-ring with clean engine oil.
  8.  
  9. Align the matchmarks on the distributor shaft and the distributor drive gear.
  10.  
  11. Turn the distributor shaft until the rotor points to the No. 1 spark plug tower on the distributor cap and install the distributor. Install the distributor hold-down bolt(s) and align the distributor housing with the mark made on the cylinder head during removal. Snug the bolt(s).
  12.  
  13. Connect the electrical connector.
  14.  
  15. Connect the spark plug wires.
  16.  
  17. Install the spark plug in the No. 1 cylinder and connect the spark plug wire.
  18.  
  19. Connect the negative battery cable. Start the engine and adjust the ignition timing. Tighten the distributor hold-down bolt to 14-18 ft. lbs. (19-25 Nm) after the timing has been set.
  20.  

 
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