How to Remove Transmission Cooler Lines Without a Quick Disconnect Tool

by Lana Bradstream
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A transmission cooler line helps maintain the temperature of a vehicle's transmission so it doesn't 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, it's 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.


Items you will need

  • Metric or standard combination wrenches

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