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Bob
Bob, Auto Tech
Category: Chevy
Satisfied Customers: 4087
Experience:  Plus 40 years GM, over 30 certified with Chevrolet, ASE certified Master Tech. (Expired, Retired)
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HOW DO YOU BLEED A CLUTCH ON A 1991 CHEVY K1500, THE ENGINE IS 4.3L

Customer Question

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Submitted: 9 years ago.
Category: Chevy
Expert:  Bob replied 9 years ago.

HelloCustomer I am sending you the information from the GM service manual on bleeding the clutch on your truck. This is never a fun job and can drive you nuts sometimes, because it can take forever. I have found that a vacuum bleeder works much better and sometimes even a can of fluid with a pump in it and hooked to the slave cylinder with a rubber hose and forcing the fluid through the system backwards and letting it run out of the master until there is no more air also seems to work better than the factory method. But here it is just in case. Thanks, Bob


 

Hydraulic Clutch Bleeding

Important: Never use fluid that you have bled from a system to fill the reservoir. The fluid may be aerated or contaminated.

  1. Fill the reservoir with new brake fluid. Use Delco Supreme® Brake Fluid (GM P/N(NNN) NNN-NNNN or equivalent.
  2. Raise the vehicle. Refer to Vehicle Lifting Caution in General Information.
  3. Depress the clutch pedal (hold the pedal down).
  4. Open the bleed screw on the concentric slave cylinder in order to expel the air.
  5. Close the bleed screw then release the clutch pedal.

    Important: Ensure no air is drawn into the clutch system.

  6. Repeat steps 2, 3, and 4 until all the air is out of the clutch system.
    1. Check and refill the reservoir as needed while bleeding.
    2. After bleeding, pump the clutch pedal several times. If the clutch engagement is not satisfactory, repeat the bleeding procedure.
  7. If the previous procedures are unsuccessful, perform the following steps.
    1. Remove the reservoir cap.
    2. Pump the clutch pedal very fast for 30 seconds.
    3. Stop pumping and let the air escape.
    4. Repeat this procedure as necessary.
  8. Lower the vehicle.

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