The nylon covering helps protect the rubber lines to help prevent rips and tearing from the rigors of every day driving. Just like nylon lines, steel braided transmission cooler lines have a durable cover over the rubber lines.
These are far more durable than rubber and are also stronger than nylon. With that added strength comes added cost. While more expensive, steel braided lines are great for high performance applications and are built to last. Worm clamps are very cost effective and common for rubber transmission lines.
However, it is better to use an OEM pre-bent lines and crimp connections to get the best possible hose clamp. That is not to say these cheap clamps are bad, but wherever possible,. The flexibility of the rubber hose will absorb engine and road vibration, but the assembly must be able to handle internal pressures up to psi along with the high temperatures. Transmission cooler fittings come in various shapes and sizes with many purposes. Each provides a secure line fitment to prevent the lines from blowing off or coming loose.
Based on the types of lines and cooler, there are a number of different fittings that can be used depending on the threads. This type of fitting is found on both the transmission and radiator where there is a pre bent transmission line. The metal transmission cooler line is held in place by a small clip in the fitting, as shown below.
Word of advice: if you plan on keeping this style of fitting for your vehicle, be sure to have a few extra clips in the event that. Barb fittings are the most common type of transmission cooler line fitting, and it used with rubber lines.
These fittings are a push fit type that allow for a standard hose clamp to keep the transmission line in place. When it comes to installing an aftermarket trans cooler, barb fittings can be used on the radiator transmission fluid outlet for rubber hose to run to the cooler. These fittings are very cost effective and are typically only a few dollars at most and comes in packs with multiple fittings.
Most transmission coolers that come with universal installation kits will provide various barb fittings to help you install your new cooler easily. AN fittings are more costly than barb fittings, but make for a very secure and clean transmission line installation. We recommend AN fittings on any type of high performance type of vehicle such as racing or off-roading.
These fittings come in a variety of sizes and have any angle you may need to make installation easy depending on your application. It is always best to use AN fittings with some sort of braided line, but can be used to attach to a barb fitting for rubber lines.
DIYers may be tempted to use any hose available in the garage but only new high-quality hoses made with chlorinated polyethylene CPE with a Hypalon cover Hypalon is a synthetic rubber material resistant to chemicals, temperature extremes, and ultraviolet light should be used.
Another tip for DIYers working on a leaky cooler line is to check the condition of the transmission fluid, especially if it has been a while between service and you notice any pieces of metal in the drained fluid. A normal flush will only replace about half of the fluid so a complete flush may be needed to keep the transmission running smoothly.
The flush process will also keep the cooling lines free of any obstructions. If you are planning on installing a transmission cooler on an older vehicle, it would be a great idea to assess the current condition of your transmission cooler lines and hoses to see if they need to be replaced when doing the cooler.
It would be a major hassle doing two separate jobs on the transmission cooling system when it comes to time and fluid costs. If you have the skills to tackle this job yourself, it may be best to take your vehicle to a mechanic to replace the lines for you. Transmission Cooler Line System. Transmission Fluid.
Common Transmission Cooler Line Issues. Exterior damage can be a result of oil contamination to the hose, prolonged exposure to ozone from auto exhaust, excess heat wear from any abrasion, and road debris. Coupling separation is normally a result of oil contamination and once again excess heat causing hose reinforcement separation Split or dented tubing can be due to road debris, rust aggravated by high salt concentrations or simply an impact from an accident.
Leaking at threaded terminations can be caused by worn O-rings and gaskets, improper installation or the threads have become stripped for some reason. Types of Transmission Cooler Lines. Metal Transmission Cooler Lines. Rubber Transmission Lines. You can get rubber transmission line at any local auto parts store quickly and easily.
Nylon Braided Transmission Cooler Lines. Steel braided Transmission Cooler Lines. Hose Clamps. That is not to say these cheap clamps are bad, but wherever possible, The flexibility of the rubber hose will absorb engine and road vibration, but the assembly must be able to handle internal pressures up to psi along with the high temperatures. Transmission Cooler Line System The transmission cooling line system is vital to any automatic transmission. It circulates the hot fluid away to the radiator via cooler lines and returns the cooled fluid back to the transmission.
If you had it reversed, the pump would be trying topush fluid through the bottom of the cooler, up through the cooler, out the top into the bottom of the rad, and up through the rad to the top. The last common leak area is the input or output seal in your transmission.
If you discover a leak from a gasket or seal in your transmission, the best way to stop the leak is to simply add BlueDevil Transmission Sealer to your transmission fluid.
Like all parts of an engine, transmission cooling lines can wear out. If they break or develop a leak, you will lose transmission fluid, leaving your car vulnerable. Once those lines start to malfunction, then the transmission fluid can overheat. The pressure is quite low psi. Double clamp it or use FI type clamps instead of the worm-drive style. You can make your own steel lines from scratch, your local parts stores should have the correct fittings.
Bending steel lines is hard to do especially if you want to keep it looking nice. Cooler and lube pressure are about the same at psi. They can be used for brake lines too…which is high pressure. They can be a pain to do right..
I have used them on transmission lines , gas lines and also brake lines with no problem. Expert Reply: I verified with my contact at Derale that the Derale Hyper-Cool Transmission Cooler, D, will work to bypass your radiator and cool your transmission fluid.
If you choose to mount the cooler further away from the radiator, then you will likely need an additional length of hose. How to Identify Transmission Fluid Return Line for Installing Supplemental Cooler The surest way to find the return line in a transmission cooler system is simply to run the cold engine for about seconds while it is in gear.
Then immediately feel the two transmission lines. Top line at the trans, goes to top line at the radiator. This is the return line. Cooler fluid returns to the trans from the cooler through this line. Favorite Answer Yes it does matter. The cooler of the two lines is the return line and the one to install the transmission cooler on.
Factory trans cooling lines to radiator, cooler, whatever it is. Expert Reply: The surest way to find the return line in a transmission cooler system is simply to run the cold engine for about seconds while it is in gear.
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