Diesel Data: Automotive Repair

5L40-E/5L50-E - Automatic Transmission



Transmission Fluid Auxiliary Cooler Replacement

Tools Required

J 39400-A Halogen Leak Detector

Removal Procedure





Important: It is not necessary to discharge the refrigerant from the A/C system during auxiliary transmission oil cooler (TOC) replacement.

Remove the A/C condenser mounting bolts and reposition the condenser.

1. Reposition the condenser to access the auxiliary transmission oil cooler. Refer to Condenser Replacement (Heavy Duty Cooling) Condenser Replacement (Standard Cooling).
2. Disconnect the transmission oil cooler (TOC) lines from the TOC.
3. Disconnect the TOC line from the TOC retainer clip (1).





4. Remove the TOC mounting bolts.
5. Remove the TOC.

Installation Procedure





1. Install the TOC.

Notice: Refer to Fastener Notice in Service Precautions.

2. Install the TOC mounting bolts.

Tighten the bolts to 5 N.m (44 lb in).





3. Connect the TOC lines to the TOC.

Tighten the fittings to 20 N.m (15 lb ft).

Connect the TOC line to the TOC retainer clip (1).
4. Reposition and reinstall the condenser.