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A transmission cooler line helps maintain the temperature of a vehicles transmission so it doesnt burn up. Disconnecting a transmission cooler line without a quick disconnect tool is a fairly simple task provided you have the proper tools. Disconnecting a cooler line while it is attached usually destroys the line itself, because a removal of the cooler line fitting is required.
Step 1
Identify cooler line location. If the vehicle is rear-wheel drive, the line is commonly found underneath the car on the passenger side. If it is a front-wheel drive vehicle, its underneath the car near the engine block. A cooler fitting, which holds the line, looks like a small nut, ranging in size from 7/16-inch to 3/4-inch.
Step 2
Select proper wrench size, depending on the size of the cooler line fittings. Unscrew the fittings.
Remove cooler line from transmission fitting. Pull the line out of the transmission fitting, taking care not to bend the line. The line is usually made of steel, ranging in width from 5/16-inch to 3/8-inch with a flare nut on the end. It can be up to 5 feet in length, but it depends on the type of car.
Items you will need
- Metric or standard combination wrenches
