A/T - Auxiliary Cooler Service Tips
Article No. 85-21-7TRANSMISSION - AUTOMATIC - AUXILIARY COOLER SERVICE TIPS (DURING TRANSMISSION OVERHAUL) - POLICE, TAXIS, AND VEHICLES EQUIPPED WITH TRAILER TOWING
FORD 1985 FORD, THUNDERBIRD, LTD, CROWN VICTORIA
LINCOLN-MERCURY 1985 LINCOLN, MERCURY, COUGAR, MARQUIS, GRAND MARQUIS
When overhauling an automatic transmission for a concern of slipping shifts and/or general transmission degeneration with evidence of overheating, inspect the auxiliary cooler hose and/or metal cooler line for kinks. Kinks can restrict the fluid flow resulting in a loss of transmission lubrication and subsequent transmission overheating and damage. Confirmation of overheating can be determined by a burnt smell from the transmission fluid, burned clutches and bands, heat stained blue surfaces on the forward sun gear, reverse sun gear and drive shell, and/or planetary assemblies.
Figure 6 - VIEWS SHOWING KINKED HOSES:
To determine if a kinked auxiliary cooler hose is present, visually check and feel the underside of the auxiliary cooler in and out hoses especially where any bend in the hoses occur. The auxiliary cooler hose could be kinked on the underside where it is not visually apparent. Refer to Figure 6.
Figure 7 - AUXILIARY OIL COOLER FORMED HOSE INSTALLATION:
Figure 8 - AUXILIARY OIL COOLER FORMED HOSE INSTALLATION:
Figure 9 - AUXILIARY OIL COOLER FORMED HOSE INSTALLATION:
Also check the metal cooler lines, especially the metal lines from the radiator intank cooler to the rubber hose connection of the auxiliary cooler. The metal cooler line routing could be crossed causing a kinked hose condition. Refer to Figures 7 through 9 for the correct positioning of the metal cooler lines.
Figure 6 - VIEWS SHOWING KINKED HOSES:
The Thunderbird/Cougar and LTD/Marquis applications may have a fuel line shield over the short ends of the auxiliary cooler hoses for reinforcement. However, the plastic shields may not be properly positioned over the curved portion of the hose and this would still allow the hose to kink. Refer to Figure 6, bottom illustration.
If a kinked hose condition does exist, or if the metal cooler lines are incorrectly positioned, follow the correction procedure outlined below:
1. Disconnect the short rubber hoses from the cooler tubes behind the radiator.
Figure 7 - AUXILIARY OIL COOLER FORMED HOSE INSTALLATION:
Figure 8 - AUXILIARY OIL COOLER FORMED HOSE INSTALLATION:
Figure 9 - AUXILIARY OIL COOLER FORMED HOSE INSTALLATION:
2. Disconnect the long rubber hoses at the auxiliary cooler in front of the radiator.
3. Remove and discard the entire circuitry including the "H" fitting.
4. Inspect the metal cooler lines routing behind the radiator and reposition, if necessary, according to Figures 7 through 9.
5. Replace the auxiliary cooler for vehicles built before June, 1985. For service replacement, use only auxiliary cooler part number E4TZ-7A095-B. The vehicle build date can be found on the upper left corner of the vehicle certification label. The label is affixed to the left front door lock panel or door pillar.
6. Obtain two "pre-formed" hoses, part number E5SZ-7B093-A.
7. For the Lincoln, Crown Victoria/Grand Marquis applications only, the straight end of the hose (side that connects to the auxiliary cooler) must be cut to fit. The length of the hose will vary between these vehicles. Be sure to allow enough hose for smooth bends where necessary.
Figure 7 - AUXILIARY OIL COOLER FORMED HOSE INSTALLATION:
Figure 8 - AUXILIARY OIL COOLER FORMED HOSE INSTALLATION:
Figure 9 - AUXILIARY OIL COOLER FORMED HOSE INSTALLATION:
8. Attach the pre-formed ends of the hose to the metal tubes behind the radiator with worm drive screw clamps, 376240-S100 - torque to 25-35 in.lbs. (2.8-4.0 N-m). Attach the straight ends of the hose to the auxiliary cooler matching the connections with the installation views attached using screw drive clamps as for pre-formed ends. Refer to Figures 7 through 9 for installation views by vehicle application.
General Transmission Instructions (typically done during any transmission overhaul)
1. Overhaul the transmission making sure to inspect all hardware for heat degeneration. Replace parts as necessary. Follow the inspection procedure in Section 17-01 of the Shop Manual.
2. Before reassembly, thoroughly clean all transmission components including the check balls in the forward clutch cylinder, the reverse clutch piston, and the direct clutch piston. Follow the cleaning procedure in Section 17-01 of the Shop Manual.
3. The cooler lines, the intank cooler and the auxiliary cooler should be thoroughly FLUSHED out before reinstalling the transmission.
PART NUMBER PART NAME CLASS
E4TZ-7A095-B Auxiliary Cooler C
E5SZ-7B093-A Pre-formed Hoses C
(2 Required)
376240-S100 Hose Clamps RG
(4 Required)
OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: Reimbursable within the provisions of the Warranty and Policy Manual.
OPERATION: SP7093A85 - Visually check cooler hoses for kinks (applicable only when transmission is overhauled because of overheating)
TIME: 0.1 Hr.
OPERATION: SP7093B85 - Replace hoses (Includes visually checking hoses)
TIME: 0.3 Hr.
OPERATION: SP7093C85 - Replace oil cooler
TIME: 0.2 Hr. DLR. CODING: Basic Part No. 7093 - Code: 55