TSB 64 03 84 (826) P: A/C Compressor - Growling Noise When Engaged

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84bmw03 Group 64 Heating and Air Conditioning Bulletin Number 64 03 84 (826) Page 1 of 2 Montvale, NJ August, 1984 Technical Dept. Subject: AIR CONDITIONING NOISE Models: ALL EQUIPPED WITH ROTARY FOUR VANE COMPRESSOR A growling noise may occur when the air conditioning compressor is engaged from idle to approximately 2,000 RPM. To eliminate this condition, five vane compressors have been introduced into series production (with new A/C belts) in place of the previous four vane compressors. The five vane compressor is identified by a Behr (or Bosch) label with a green background. Should customer complaints be encountered for this condition, install a five vane compressor as shown for the applications below along with a new A/C belt. WARRANTY STATUS Reimburseable under the provisions of the BMW 3 Year/36,000 Mile Limited Warranty. Special Defect Code: 64 52 00 25 00 PARTS LIST Application: 528e (produced prior to June, 1983) Part Number Quantity Description 64 52 1 373 355 1 Compressor 64 52 1 284 858 1 Support Bracket 64 52 1 284 748 1 Tensioner 64 52 1 284 966 1 Bolt 64 52 1 289 592 1 V-belt 64 53 1 374 551 1 Tube 64 53 1 375 242 1 Hose 12 31 1 273 639 1 Adjuster Nut 07 11 9 919 978 4 Bolt 07 11 9 912 570 2 Bolt 07 11 9 932 095 7 Washer 07 11 9 936 432 1 Washer 07 12 9 922 714 3 Nut