A/T - Oil Cooler Overheating During Cold Weather
84ford6
Article No. 84-20-14
TRANSMISSION - AUTOMATIC - EXTERNAL TRANSMISSION OIL COOLER OVERHEATING DURING OPERATION IN EXTREMELY COLD WEATHER (-30~F/-34~C)
- ALL E & F-SERIES EXCEPT F250/ 350 WITH 6.9L DIESEL ENGINE
LIGHT TRUCKS 1982-84 E & F SERIES
Automatic transmission overheating reported on referenced model vehicles operating in low ambient temperatures of minus 30~F/minus 34~C or below may be the result of reduced fluid flow through the external oil cooler due to excessive fluid cooling (thickening). This reduced fluid flow may cause loss of fluid or tranmission overheating.
Symptoms, after low ambient temperatures operation, are as follows:
1. Change in color of transmission fluid.
2. Smell of fluid or evidence of transmission fluid on or under the vehicle.
If the above conditions are noted or if transmission service or replacement is required due to transmission overheating, the external transmission oil cooler (7A095) must be replaced as shown:
PARTS AFFECTED
VEHICLE USAGE ADD DELETE PART NAME
E100-350 E5UZ-7A095-B (24 Plate) E3UH-7A095-BA Aux. Trans. Oil Cooler Assy.
E250-350 E5UZ-7A095-A (48 Plate) E3UH-7A095-AB Aux. Trans. Oil Cooler Assy.
F100-350 E5TZ-7A095-C (24 Plate) E2TH-7A095-AA Aux. Trans. Oil Cooler Assy.
F250-350 E5TZ-7A095-B (48 Plate) E3TH-7A095-AA Aux. Trans. Oil Cooler Assy.
The new auxiliary transmission oil cooler assembly (7A095) contains an internal bypass which allows a portion of the transmission fluid to flow more easily through the cooler in extreme cold weather operations. The new oil cooler continues to provide adequate function during vehicle operations under normal or warm weather conditions.
The external oil cooler assembly removal and installation procedures for the subject vehicles are as follows:
Removal and Installation:
1. Loosen the two tube compression nuts attaching the two steel tubes to the oil cooler assembly (7A095) and remove both tubes from the cooler assembly. Remove the oil cooler assembly (a slight loss of transmission fluid will occur when tubes are disconnected).
2. Install the new cooler assembly to the radiator support. Reconnect the two steel tubes to the cooler assembly. Securely tighten each tube compression nut to assure a leak-proof connection.
3. Check level of transmission fluid in transmission; add fluid to proper level.
PART NUMBER PART NAME CLASS
E5UZ-7A095-B Aux. Trans. Oil Cooler Assy. R
E5UZ-7A095-A Aux. Trans. Oil Cooler Assy. C
E5TZ-7A095-C Aux. Trans. Oil Cooler Assy. R
E5TZ-7A095-B Aux. Trans. Oil Cooler Assy. C
OTHER APPLICABLE ARTICLES: 84-5-19
WARRANTY STATUS: Reimbursable within the provisions of the Warranty and Policy Manual.
OPERATION: SP7095B84
TIME: 0.5 Hr. - E-Series 0.4 Hr. - F-Series DLR. CODING: Basic Part No. 7A095 Code: 55