Ignition ECU - Replacement Procedure

Bulletin Number:
12 01 82 (558)

Date:
January, 1982

Group: 12
Motor-Electric

Subject:
TRANSISTORIZED IGNITION ECU REPLACEMENT PROCEDURES




Normal heat produced by the transistorized ignition ECU is dissipated by the heat exchanger (heat sink) mounted below the ECU.

If the ECU and heat exchanger are separated for any reason such as body and collision repairs, replacement, etc., the anti-corrosion compound between the ECU and heat exchanger will be torn apart and corrosion could occur. Excessive corrosion could result in the failure of the ECU.


REPAIR PROCEDURE - ECU REPLACEMENT

1. Remove original anti-corrosion compound completely with 180 grit sandpaper.

Note:
If corrosion is present, replace the heat exchanger.


2. Coat the heat exchanger with an excess of Curil K2 (P/N 81 22 9 400 243) so that the excess Curil will squeeze out at least 2mm beyond the edges when the ECU and heat exchanger are bolted together. This will insure an effective seal.