Lumina V6-191 3.1L VIN T MFI (1993)
connector. A bleeder hose is not used to bleed brake pipe connections.
7. Crack (slightly open) forward brake pipe tube nut on hydraulic modulator and check for air in escaping fluid.
8. When air flow ceases, immediately tighten tube nut.
Tighten
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Tube nut to 24 Nm (18 lb. ft.).
9. Repeat Steps 4 and 5 for remaining three brake pipe connections, moving from front to rear.
Wheel Brakes
10. Raise vehicle and suitably support.
Important
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Bleed sequence:
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Right rear.
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Left rear.
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Right front.
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Left front.
11. Bleed wheel brakes in sequence shown above.
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Attach bleeder hose to bleeder valve and submerge opposite hose end in clean container partially filled with brake fluid. Slowly open bleeder
valve and allow fluid to flow. Close valve when fluid begins to flow without any air bubbles. Tap lightly with a rubber hammer to dislodge any
trapped air bubbles.
12. Repeat above sequence on left rear wheel brake.
13. Repeat above sequence on front wheel brakes.
14. Lower vehicle.
15. Remove bleeder adapter J 35589.
16. Check fluid level in reservoir and fill to the correct level using clean brake fluid, if necessary.
17. Install fluid reservoir cover and diaphragm assembly.
Inspect
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With ignition "ON," apply brake pedal with moderate force and hold. Note pedal travel and feel.
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If pedal feels firm and constant and pedal travel is not excessive, start the engine. With the engine running, re-check the pedal travel. If it's
still firm and constant and pedal travel is not excessive, go to Step 7.
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If pedal feels soft or has excessive travel either initially or after engine start. Use the Tech 1, "Release" then "Apply" the motors 2 to 3
times and cycle the solenoids 5 to 10 times. Be sure to "Apply" the front and rear motors to insure the pistons are in the upmost position.
Now repeat bleeding procedure.
18. Road test the vehicle.
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Make several normal (non ABS) stops from a moderate speed to ensure proper brake system function.
