A/C - Buzzing Noise

87mazda03

Category Applicable Model/s Subject Bulletin No. *023/87
*16 1987 RX-7 CORRECTION & MODIFICATION OF Issued 7/13/87
(ex. Turbo) A/C HOSE CLAMP Revised 7/27/87



DESCRIPTION

Some 1987 RX-7 vehicles equipped with air conditioning systems may encounter a buzzing noise caused by the suction side of the A/C flexible hose vibrating against the firewall.



When this condition occurs, check the retaining clamp (0000-67-A43A-6A) to see if it has lost its crimping ability. If it has, it can be easily corrected by following the steps below:

1. Loosen nut securing the clamp to the hose bracket.
2. Crimp the clamp as shown in the illustration.
3. Retighten nut.

This will give the clamp better crimping ability.
This bulletin replaces Service Bulletin Cat. 60,061/87. Please discard Service Bulletin Cat. 60,061/87 and file this bulletin in the appropriate category.



A countermeasure clamp was introduced on March 23, 1987. The new and old clamps can be distinguished by checking the manufacturer's part number stamped on the clamp.

NOTE:
Mazda's part number has not changed.
WARRANTY INFORMATION

Other than MMA-C Area MMA-C Area
Customer Comment Code: 7A A2
Damage Code: 02 AP
Part Number of Main Cause: 0000-67-A43A-6A 0000-67-A43A-6A
Operation Number: 67A43A-R-X 67A43A-R-X
Labor Hours: 0.2 Hrs 0.2 Hrs