POOR COOLING - DIAGNOSING/REPAIR A/C LEAKS CAT. 16, NO. 033/88
Article Text
1983 Mazda RX7
For www.iluvmyrx7.com
Copyright © 1998 Mitchell Repair Information Company, LLC
Monday, August 27, 2001 06:37AM
ARTICLE BEGINNING
TECHNICAL SERVICE BULLETIN
DIAGNOSIS & REPAIR OF A/C REFRIGERANT LEAKS
Model: ALL MODELS with A/C
Bulletin No.: 033/88
Date: 6/30/88
Category: 16
Symptom: Poor Cooling
DESCRIPTION
When diagnosing customer complaints regarding insufficient cooling and
a refrigerant leak is suspected, please follow these procedures for
locating and repairing the leak in order to prevent unnecessary
component replacement.
VERIFY THE CUSTOMER'S COMPLAINT
1. Check the outlet air volume and temperature. (However, the outlet
temperature will vary according to ambient conditions. 35-45
degrees F is normal)
2. Verify the compressor clutch operation. (The compressor will not
operate if the system is empty of refrigerant.)
VERIFY THE STATE OF CHARGE AMOUNT
The following indication shows low charge condition. (Fig. 1)
Fig. 1: A/C Sight Glass
CHECK FOR LEAK IN THE ENGINE COMPARTMENT
1. Visually check all components for obvious leaks and signs. Also,
check the fittings by hand for tightness.
NOTE:
Some leaks may have an oil stain around leak area.
2. Use the electric leak detector to locate the leak.
When using leak detector:
a) the system should be at least partially charged.
b) the detector probe should be moved slowly at a rate of about 1
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