Bonneville V6-231 3.8L VIN 3 SFI (1988)
SPECIAL TOOLS REQUIRED (or equivalents)
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J-36179, Adjustment tool
REMOVE OR DISCONNECT
1. Crank sensor harness connector.
2. Rotate the harmonic balancer, using a 28mm socket and pull handle, until any window in the interrupter is aligned with the crank sensor.
3. Loosen the pinch bolt on the sensor pedestal until the sensor is free to slide in the pedestal.
4. Pedestal to engine mounting bolts.
5. While manipulating the sensor within the pedestal, carefully remove the sensor and pedestal as a unit.
INSTALL OR CONNECT
1. Loosen the pinch bolt on the new sensor pedestal until the sensor is free to slide in the pedestal.
2. Verify that the window in the interrupter is still properly positioned and install sensor and pedestal as a unit while making sure that the interrupter
ring is aligned within the proper slot.
3. Pedestal to engine mounting bolts and torque to 30 Nm (22 lbs ft).
4. Rotate harmonic balancer, using a 28mm socket and pull handle, until the interrupter ring(s) fills the sensor slot(s) and edge of interrupter window is
aligned with edge of the deflector on the pedestal.
5. Insert adjustment tool J-36179 into the gap between sensor and interrupter on each side of interrupter ring. If gauge will not slide past sensor on
either side of interrupter ring, the sensor is out of adjustment or interrupter ring is bent. This clearance should be checked at three positions around
the outer interruptor ring, approximately 120° apart.
ADJUSTMENT
1. Loosen the pinch bolt on sensor pedestal and insert adjustment tool J-36179 into the gap between sensor and interrupter on each side of interrupter
ring.
2. Be sure that interrupter is sandwiched between blades of adjustment tool and both blades are properly inserted into sensor slot.
3. Torque sensor retaining pinch bolt to 3.4 Nm (30 lbs in) while maintaining light pressure on sensor against gauge and interrupter ring. This
clearance should be checked again at three positions around the interrupter ring, approximately 120° apart. If interrupter ring contacts sensor at
any point during harmonic balancer rotation, the interrupter ring has excessive runout and must be replaced.
