Alternator - Insufficient Output May Cause Dead Battery
90mazda02 Category GApplicable Model/s 1988-'89 929 SOHC
Subject 70A ALTERNATOR
Bulletin No. 003/90
Issued 6/20/90
Revised
DESCRIPTION
If a customer drives in stop-and-go traffic with heavy electrical loads, the output of the 65A alternator may not be sufficient. This condition may create a dead battery even though there is no problem with the charging system or the battery.
If the above conditions are suspected, use the optional 70A alternator instead of the normal 65A alternator. A joint harness and band are now available as service parts for the 1988-89 929 so the 70A alternator can be installed. The 70A alternator is installed in production on the 1990 929.
PARTS INFORMATION
PART NUMBER DESCRIPTION
JE34 18 300R Alternator (70A)(*)
HF20 67 SH1 Joint Harness
9970 93 200 Tie-Wrap (*) Mazda finish line battery (0000 80 224F) must be
used with the 70A Alternator.
INSTALLATION PROCEDURE
NOTE:
Check the charging system (Workshop Manual, Category G). Recharge the battery by charging boost current (refer to Service Bulletin, Category 5, no. 020/88).
1) Disconnect the negative battery cable.
2) Replace the alternator with a 70A model.
3) Install the joint harness with a tie-wrap as shown.