Inspection and Verification

Before servicing the climate control system, perform a visual inspection of components. Check all refrigerant line connections for indications of leaks. A refrigerant leak will usually appear as an oily buildup at the point of the leak. This is caused by refrigerant escaping through the faulty connection. As the refrigerant escapes, a minimal amount of refrigerant oil escapes along with the refrigerant. Over time, this refrigerant oil collects around the refrigerant leak and will take on the appearance of a dirty/oily deposit.

In addition to visual inspection of the refrigerant lines, the drive belts (8620) should also be examined for evidence of age and wear. Look for signs of cracks and fraying on the drive belts. Drive belt tension should also be checked. Drive belts showing signs of wear should be replaced. Refer to Section 03-05 for information on drive belt tension and replacement.

Engine coolant hoses should also be visually inspected for evidence of age. Look for cracking, signs of collapsed hoses and squeeze the hoses to check for excessively mushy or soft hoses. Coolant hoses showing any signs of wear should be replaced.

For information on servicing A/C-Heater Systems, refer to Section 12-00.