EXPERTEC TSB (35-4)
Publication date: 1984-02-15Reference number: 35-4
Supersedes refnos: 1-85
EXPERTEC TSB
TECHNICAL SERVICE BULLETIN
Reference Number(s): 1-85, 35-4, Date of Issue:
02/15/84
A/C COMPRESSOR SHAFT SEAL - INFORMATION
Model(s): 1984 GMC Models
Cadillac Bulletin No.: GMC 1-85
Chevrolet 84-83
Pontiac 84-1-7
Oldsmobile 35-4
Buick 84-1-7
Cadillac T84-6A
Date: 02/15/1984
BULLETIN ILLUSTRATION LIST
SERVICE INFORMATION
A NEW A/C COMPRESSOR SHAFT SEAL HAS BEEN IMPLEMENTED ON ALL R-4 AND DA-6 A/C COMPRESSORS DURING THE 1984 MODEL YEAR. A NEW ONE-PIECE LIP SEAL HAS REPLACED THE TWO-PIECE CERAMIC CARBON SEAL. THE LIP SEAL IS A QUALITY IMPROVEMENT AND IS ANTICIPATED TO IMPROVE SHAFT SEAL FIELD PERFORMANCE.
INSPECTION AND SHAFT SEAL SERVICE MUST BE MADE AS FOLLOWS:
SERVICE PROCEDURE
- DA-6 COMPRESSOR ORIGINALLY PRODUCED WITH TWO-PIECE CERAMIC CARBON SEAL MUST BE SERVICED WITH A TWO-PIECE SEAL (P/N- 2724280).
- DA-6 COMPRESSORS PRODUCED WITH THE ONE-PIECE LIP SEAL MUST BE SERVICED WITH A ONE-PIECE SEAL (P/N 2724319)
- R-4 COMPRESSORS ORIGINALLY PRODUCED WITH THE TWO-PIECE CERAMIC CARBON SEAL MUST BE SERVICED WITH A TWO-PIECE SEAL (P/N-
- FOR PROPER SHAFT SEAL FUNCTION.
- R-4 COMPRESSORS ORIGINALLY PRODUCED WITH THE ONE-PIECE LIP SEAL MAY BE SERVICED WITH EITHER A ONE-PIECE SEAL (P/N 2724319) OR THE TWO-PIECE SEAL (P/N 12301828).