Chevrolet Cobalt Service & Repair Manual: Air Gap, Adjustment
| 1. |
Evacuate system as outlined under "Refrigerant
Recovery" in "General Service" on main menu selection. |
| 2. |
Raise and support vehicle. |
| 3. |
Remove righthand front fender inner
liner screws and pin type retainers, then the liner. |
| 4. |
Rotate drive belt tensioner counterclockwise
to release tensioner spring tension. |
| 6. |
Disconnect A/C compressor electrical
connector. |
| 7. |
Remove A/C compressor hoses from compressor,
Fig. 1, then seal hose opening. |
| 8. |
Remove and discard sealing washers. |
| 9. |
Remove compressor mounting bolts,
Fig. 2, then the compressor. |
| 10. |
Carefully clean clutch plate bolt threads
with a M6 x 1.0 tap. Carefully blow out debris with compressed air. |
| 11. |
Slide compressor clutch coil onto compressor,
Fig. 3. |
| 12. |
Install compressor clutch coil snap
ring using suitable snap ring pliers. |
| 13. |
Place a small amount of oil on 0.016
inch air gap shim and place inside clutch drive plate. |
| 14. |
Install compressor clutch plate. |
| 15. |
Measure air gap between pulley and
drive plate, then adjust shims to achieve a 0.012-0.024 inch air
gap, Fig. 4. Ensure drive plate does not drag
against pulley when pulley is rotated. |
| 16. |
Make certain that new drive plate bolt
has colored adhesive on at least 5 threads. Install the clutch drive
plate bolt using clutch plate holding tool No. J 37872, or equivalent,
Fig. 5. |
| 17. |
Torque compressor clutch drive
plate bolt to 106 inch lbs. |
|
Fig. 1 A/C compressor hoses & seal removal
Fig. 2 Exploded view of compressor replacement
Fig. 3 Install dutch pulley onto compressor
Fig. 4 Compressor clutch air gap adjustment
Fig. 5 Clutch plate holding tool & bolt installation
Caution: Air conditioning R-134a
liquid refrigerant is capable of harming eyes or freezing skin. Always wear
safety goggles and avoid contact with liquid refrigerant. Failure to follow ...
1.
Disconnect blower motor resistor electrical
connector, Fig. 1.
2.
Unsnap blower motor resistor from HVAC
module, then remove res ...
See also:
Chevrolet Cobalt Service & Repair Manual. Operation
The desired yaw rate is calculated
from the position of the steering wheel, the speed of the vehicle and the
lateral, or sideways acceleration of the vehicle. The difference between
the desired yaw rate and the actual yaw rate is the yaw rate error, which
is a measurement of o ...
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