It’s a marvelous example of mechanical innovations but a bit too complicated for the scope of this article. Place a small rubber hose over the exposed fitting and start the engine. The AT is hooked up, at one point, to the radiator for "cooling purposes." It's the radiator threads that are stripped. As long as the condensor and radiator aren't fouled, they should have plenty of margin to still provide the required amount of heat transfer though. This type of fitting is found on both the transmission and radiator where there is a pre bent transmission line. Part # 800-614. Unfortunately, if that temp increases by just 10 degrees, your fluid life could decrease by up to 50%. Q. Est. Find the oil cooler lines. It feeds the hydraulic system and pumps fluid out of the transmission via the hot line. In the most common installation method, the cooler is attached with narrow plastic rods, pads, and fasteners. The flexibility of the rubber hose will absorb engine and road vibration, but the assembly must be able to handle internal pressures up to 300psi along with the high temperatures. Disconnect the connector for the electric fan. I THINK it mighta leaked on the old radiator though. 7. I run a few quarts out and the very first sign of bubbles I have a friend shut the vehicle off. Place a small rubber hose over the exposed fitting and start the engine. The lower part of radiator is equipped with two alignment dowel pins. Now let's go ahead and begin our install. What kind of fitting is this? Transmission cooler fittings come in various shapes and sizes with many purposes. In between the transmission and the radiator are two clips. The transmission cooling line system is vital to any automatic transmission. The radiator is new, but its leaking. The cooler of the two lines is the return line and the one to install the transmission cooler on. Nylon braided transmission cooler lines, like their name indicates, are rubber lines encased in a protective nylon cover. Start the engine and put the transmission in gear to heat the oil. Speedway Motors employee Pat O. is back to talk Ford Automatic OverDrive Kickdown brackets and kits. 2. Cutting the hard lines near the radiator means the hose you will need to install can be shorter. Transmission Cooler: External stand alone transmission cooler supplied must be installed or your warranty will be voided. This video shows you how to change out those old lines. Please don’t bolt the cooler to your exhaust. If not possible, then you need a cooler with an integrated fan and proper air flow. Constant, forward air flow is a MUST! Remove the nut securing the cooler line bracket to the transmission. Automatic transmissions need specific types of fluids as recommended by the car’s manufacturer. The lines are a sending and return line. Decide where you wish to splice into the cooling lines to install the cooler. 2010 GMC Sierra 1500 Transmission Cooler lines for 4.8L, 5.3L, 6.0L located from Upper Inlet Line from Upper Transmission Connection to Passenger Side Connection on Auxiliary Cooler, Lower Outlet Line from Lower Radiator Connection to Lower Transmission Connection, Auxiliary Cooler Outlet Line from Driver Side Connection on Auxiliary Cooler to Upper Radiator Connection. 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 Guide participates in the Amazon Associates program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. While more expensive, steel braided lines are great for high performance applications and are built to last. If those aren’t doing the trick to help, an auxiliary cooler may be the next best option. If the oil flows from the radiator, this is the outlet. SELECT STORE. Start the truck and put it in drive, apply the brakes firmly and then apply the accelerator slightly so that the rpms climb. Put both line ends into a container and see which one yields fluid. A rubber hose connects to the fitting and the other end of the hose connects to another similar fitting on the automobile radiator. Replacing an automatic transmission can cost thousands of dollars while a cooler line replacement will cost up to about $500 at most. Run the hose to the adapter you placed on the radiator in the previous step. Detach the white retainer clip holding both lines to the radiator support. Metal transmission cooler lines are typically pre-bent with fittings that are held on by a flare at each end of the line. The cooler of the two lines is the return line and the one to install the transmission cooler on. This is an aluminum 6 pass cooler that comes with 4 foot of 3/8" hose and the EZ-tie style mounting rods/clips. We'll also walk you through choosing the correct parts in order to make this installation a breeze! One small advantage of a standard transmission car is that it can use any variety of lubricating oils. Let truck sit long enough to allow transmission to cool. Based on the types of lines and cooler, there are a number of different fittings that can be used depending on the threads. https://transmissioncoolerguide.com/transmission-cooler-installation Next, consider changing the smooth transmission pan to a finned product, such as this one from Speedway Motors. lbs.). If you have a skid plate (stock or otherwise) remove it … The conduit is a metal pipe that bends around the transmission and engine. Step 3 Follow the line back to its insertion point in the transmission. Photo may not be specific to your vehicle 5 Disconnect the transmission cooler lines at the radiator and drain the fluid into a drain pan. Put both line ends into a container and see which one yields fluid. The warmer line will be the pressure line which delivers the oil from the transmission to the radiator. Connect the radiator inlet hose to the radiator. 5: Attach the rubber hose to either of the outlets on the cooler. The cooler is attached to a bracket, which is attached to your radiator core support. Remove the screws or small bolts attaching the mounting bracket to the core support and you … Place a small rubber hose over the exposed fitting and start the engine. Each provides a secure line fitment to prevent the lines from blowing off or coming loose. Derale offers a series of transmission cooling pans that incorporate built-in cooling tubes which flow cool air through the ATF. If it's the male part (connected to the tube, you can buy a replacement. the lines are a common leak point due to corrosion. The cooler is attached to a bracket, which is attached to your radiator core support. I've started towing a pop-up camper and noticed my transmission temps getting a little higher than I like. Read up on expert torque converter recommendations and learn how to choose the right stall for your application. Transmission oil cooler line connector 3/8". The return cooler line is attached in a similar fashion completing the cooling loop. Slip a hose clamp over each connection point. Combined with their 2-quart increased capacity and heat-dissipating coating, these pans can reduce fluid temperatures 20-50 degrees. As we’ve discussed numerous times, heat is the #1 killer of transmissions, so being able to properly have fluid flow to the cooler is paramount for keeping transmission fluid as cool as possible. Transmission lines are pressure lines, and without that barbed fitting you can blow a line off and drain your transmission (not good!). So, as soon as the transmission cooler lines at the radiator of your car are starting to leak, you should immediately take necessary steps to prevent a further issue from arising. Its an interesting mod, and I'm thinking about doing something similar. These are far more durable than rubber and are also stronger than nylon. It circulates the hot fluid away to the radiator via cooler lines and returns the cooled fluid back to the transmission. Depending on where you live, steel transmission lines may rust out over time causing leaks, and will need to … I used auxiliary transmission cooler in the front. Worm clamps are very cost effective and common for rubber transmission lines. 3. Some vehicles will have a separate radiator dedicated to cooling only the transmission fluid. When installing coolers, make sure lines are clear of anything that can rub them. Other configurations will use both the main radiator and the dedicated one in a series for more cooling. Disconnect the power steering cooler line from cooler. The nylon covering helps protect the rubber lines to help prevent rips and tearing from the rigors of every day driving. Place a small rubber hose over the exposed fitting and start the engine. Next, install it on the return side, after the factory cooler. Speedway Standard 4-Pass Transmission Fluid Cooler, Heavy Duty Aluminum Transmission Cooler, Powder Coated Finish, Derale 53478 Stacked Plate Cooler 34 Row 13 x 10-7/8 Inch 2 Inch Thick, Perma-Cool 1006 Frame Rail Transmission Cooler, Speedway TH350 Finned Aluminum Transmission Pan, Aluminum Heatsink Transmission Cooler, 12 Inch, Walker 348 Radiator Transmission Cooler Rubber Hose Straight Fittings, Universal Transmission Cooler Installation Kit, Looking Beyond the Cooling System for Common Overheating Cures, Protect Your Radiator With Nomex Honeycomb. Lastly, location is also important. Home Delivery. The repair or replacement of the transmission cooling lines may seem like a simple matter of removal and replacement but their location in the engine and the interference of other engine parts will be a challenge, especially for the not as skilled DIY mechanic. Tighten the engine oil cooler lines to 18 Nm (13 ft. BD Diesel 1300611 Transmission Cooler Review. Be the first to get new products, special deals & promotions! In comparison to the cost of a transmission rebuild, these options are by far the most beneficial. We’ve seen it happen. Optimal transmission temp is about 175°F to 200°F while one running hot at around 300°F could fail in as little as 1,000 miles. Learn how to wire dual electric radiator fans. Use our dual fan wiring diagram and guide to make sure you properly wire your fans to your thermostat. I didn't take images of these, but they're retaining clips, you should be able to figure out how to release them. Another sure-fire way to tell pressure from return is to disconnect either cooler line at the radiator. If you intend to mount an inline cooler for your transmission, there are a couple things that you need to keep in mind. Speedway Motors offers several options for you to choose from, from a single pass inline unit to four pass and even six pass kits like one from Derale that comes complete with cooler, hose, brackets and mounting hardware. 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. Disconnect both transmission cooler lines from radiator. Rubber transmission lines are readily available and are the cheapest option for transmission cooler lines. That is not to say these cheap clamps are bad, but wherever possible. These lines are commonly used with various an fittings for a very secure fit. Don’t worry too much about what happens inside that container. Truth is, all that stop-and-go traffic generates heat inside your automatic transmission. Connect the line from the top of the top of the cooler to the bottom of the radiator with the new clamp 13. $ 5. 2. After 30 seconds, turn the car off and look for leak traces of red transmission fluid on the paper and the steel lines. Barb fittings are the most common type of transmission cooler line fitting, and it used with rubber lines. Remove the nut securing the cooler line bracket to the transmission. Heat kills transmissions. Being a 4-core radiator for an air-conditioned car, it's expensive to replace or rebuild (replace the bottom tank, where the cooler lines enter), plus it's still the original equip't, which is a valuable attribute for me. 11. If you follow their path, they will lead you to the fittings in the lower radiator tank at the front of the vehicle. The configuration will vary depending on the make and model of the vehicle and it terminates with transmission cooler line fittings. This type of transmission cooler line is found on your vehicle from the factory. 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. The cooler of the two lines is the return line and the one to install the transmission cooler on. This reduces the heat being introduced to the radiator, which is usually where the factory cooler is located. 6. Now, ensure that the vehicle cannot start during cranking. Another sure-fire way to tell pressure from return is to disconnect either cooler line at the radiator. A. Hayden recommends installing the auxiliary cooler after the radiator to return the coolest fluid directly to the transmission. Lift front of truck and remove grill. Auxiliary coolers are usually rated in Gross Vehicle Weight, and this figure can be found on the Vehicle ID plate that is mounted to the door-jamb of most American vehicles. Automatic transmissions need specific types of fluids as recommended by the car’s manufacturer. Split or dented tubing can be due to road debris, rust aggravated by high salt concentrations or simply an impact from an accident. Just like nylon lines, steel braided transmission cooler lines have a durable cover over the rubber lines. Think of the transmission as a box, or container of moving parts. If the oil flows from the … Get FREE SHIPPING On All Orders Over $25 At Advance Auto, No Promo Code Required! If necessary, place newspaper under the lines and start the car. Another sure-fire way to tell pressure from return is to disconnect either cooler line at the radiator. The warmer line will be the pressure line which delivers the oil from the transmission to the radiator. How does a cooling system work? Install the left and the right engine support torque struts.Connect the radiator outlet hose to the radiator. Step 5 Remove the two transmission cooler lines from the side of the transmission with a flare nut wrench. lbs.). Tighten the transmission oil cooler line fittings to 27 Nm (20 ft. Gotta tell you that on a hot summer day it was just warm to touch after a 30 min highway ride.. Body quick connector. The fluid is then circulated through a series of coils or fins and returned back to the transmission in the opposite line. Transmission Cooler: External stand alone transmission cooler supplied must be installed or your warranty will be voided. Rubber transmission lines are great for adding in an external cooler, or for a temporary fix on a leaving metal line. More specifically, heat kills the transmission fluid. We'll assume you're ok with this, but you can opt-out if you wish. Oil leaking or “weeping” from the hose or coupling can be caused when the hose deteriorates at the crimp site due to excessive heat. I say should because I never got one of them to budge. With that added strength comes added cost. I have a question..the small metal line that carries transmission fluid to the radiator...it connects there at the bottom of the radiator. there is a transmission fluid cooler built into the radiator of your truck, which means there are steel lines that run from the side of your transmission up to the radiator, on the passenger side of the truck. I mean is there an O-ring in there that prevents it from leaking or what? A small pick is the tool of choice and after removal, the lines should come right apart. 71 Posts . First, change the transmission filter. Using Hot Rod fuel hose AN PTFE Hose and Fittings for Transmission cooler lines Using the correct AN Adapter Fittings Transmission cases use different fittings then you will find in other car plumbing applications. Trace both lines underneath the vehicle to the transmission. Using an open-end wrench, disconnect one of the oil cooler lines where it enters the radiator. Always use line that is approved for transmission/hydraulic fluid. Install the transmission oil cooler lines to the radiator. Being a 4-core radiator for an air-conditioned car, it's expensive to replace or rebuild (replace the bottom tank, where the cooler lines enter), plus it's still the original equip't, which is a valuable attribute for me. So, as soon as the transmission cooler lines at the radiator of your car are starting to leak, you should immediately take necessary steps to prevent a further issue from arising. Now go out and feel the two lines leaving the radiator. Its an interesting mod, and I'm thinking about doing something similar. Put both line ends … If you cut both lines as indicated, you will have to flare a lot more connections if you want to run this as an auxiliary cooler in tandem with the factory one. If you're unsure how to remove the grill, click here. Delivery: Feb 12. By building fins into the pan, you increase the surface area that cool air passes by and in turn increase the cooling capacity of the pan. There are several ways you can help this cooling process. Free In-Store or Curbside Pick Up. Transmission cooler lines are a vital part of keeping your transmission fluid cool and the link between your transmission and the cooler. These fittings are a push fit type that allow for a standard hose clamp to keep the transmission line in place. Learn about the different types of transmission cooler lines and fittings. 1. Try and locate the cooler where it will achieve maximum airflow. The warmer line will be the pressure line which delivers the oil from the transmission to the radiator. threads on one of the automatic transmission cooler lines. ;You have a transmission cooler line which won't connect to radiator because either the male or female connector has been cross threaded and stripped out -- always make at least 2 full turns by hand before reaching for the wrench -- brass parts are soft and easy to booger up. The transmission cooler consists of a small radiator bolted behind the engine's radiator and two transmission cooler lines that extend from the second radiator to the transmission. Installing the cooler before the radiator will still provide additional cooling and may be necessary in some difficult access applications. The sizes can run from 5/16 inch to 5/8 inch so that DIYer will need to be careful to choose the right size hose. With the lines disconnected you are now ready to get the old cooler out of there. Radiator side. The thread size on the radiator and the lines are both 5/16”. Does anyone know the part number for a 5/16 to 5/16 fitting? Warm fluid from the transmission is forced under pressure through one line to the radiator for cooling. Leaking at threaded terminations can be caused by worn O-rings and gaskets, improper installation or the threads have become stripped for some reason. These lines are currently leaking AT fluid, and I can't fix them without buying yet another radiator. For our discussion simply know that two cooling tubes are attached to the transmission, the hot and cold lines mentioned earlier. Several different options for mounting a transmission cooler are available. So yesterday I did a filter/fluid change along with a corvette servo install (best mod for under $20). Pull the bracket/lines out of the transmission and have a catch-pan ready as some fluid to come out. Locate the transmission cooler hard lines that run into the radiator and inspect them for leaks. Even a filter that is slightly clogged will reduce the flow of fluid, resulting in higher friction, and friction builds heat. Since my new radiator wasn't equipped with an in the tank cooler, I opted for an External Transmission Cooler. Cooler must be installed in front of the radiator. These fittings come in a variety of sizes and have any angle you may need to make installation easy depending on your application. Lastly, location is also important. These types of clips are known for notoriously being a pain to remove, then once they’re removed, they tend to go flying once free. This guide answers all your questions. Transmission lines going in/out of trans cooler in radiator. Locate the area of the transmission line where fluid is leaking. When no more coolant is coming out of the lines, they can all be disconnected, the transmission and transmission cooler can be cleaned of fluid, and new lines can be put in place. AN fittings are more costly than barb fittings, but make for a very secure and clean transmission line installation. With bevel washer at cooler fitting. You can get rubber transmission line at any local auto parts store quickly and easily. Learn how to choose the best radiator for your vehicle. If necessary, use a spray penetrating oil for corroded fittings. DO NOT use transmission cooler in conjunction with radiator cooler. This reduces the heat being introduced to the radiator, which is usually where the factory cooler is located. This guide will demonstrate the steps needed to install an auxiliary transmission cooler. ADD TO CART. Pull the bracket/lines out of the transmission and have a catch-pan ready as some fluid to come out. Connect the engine oil cooler lines to the radiator. When it comes to building custom transmission cooler lines, the motto “buy once, cry once” applies here since you are paying for a very high quality lines. threads on one of the automatic transmission cooler lines. Disconnect the overflow hose from radiator. 3. As long as the condensor and radiator aren't fouled, they should have plenty of margin to still provide the required amount of heat transfer though. Step 2. Disconnect the transmission cooler lines at the transmission and again drain the fluid into a drain pan. Open the hood and find the two transmission cooler lines, which lead to the bottom of the radiator. As part of the swap I upgraded to new stainless trans cooler lines to my th400. Why is your engine overheating? Another tip for DIYersworking 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. Remove the screws or small bolts attaching the mounting bracket to the core support and you … 8. Constant, forward air flow is a MUST! One component inside that “box” is a small pump that circulates the transmission fluid. Depending on your vehicle, these may be very straight forward to replace, or can be a pain due to the space and the bends in the lines. If not possible, then you need a cooler with an integrated fan and proper air flow. Transmission lines are pressure lines, and without that barbed fitting you can blow a line off and drain your transmission (not good!). I have a 1990 Acura Integra 1.8L B18A1 engine with an automatic transmission. Most stock vehicles have some form or another of a cooler for the transmission fluid. 3. Getting the old one out meant pulling those tiny e clips that hold the hard lines together. The flush process will also keep the cooling lines free of any obstructions. I installed an aftermarket radiator with no transmission cooler built in. On the radiator side, that's when things get a little more tricky. Next, install it on the return side, after the factory cooler. 99. Shut the car off and feel the temperature of both cooler lines. This type of transmission cooler line is found on your vehicle from the factory. Step 1. Put the truck back in park and shut it off. However, the transmission cooler will need to be drained once the initial cooler line has been disconnected. DO NOT use transmission cooler in conjunction with radiator cooler. To browse the complete selection of transmission coolers available at Speedway Motors, click here. Now go out and feel the two lines leaving the radiator. If the temps are maintained at that level, your fluid could last up to 100,000 miles. good luck! Disconnect the two lines going to the small transmission cooler on the front of the radiator using the line wrenches and catch any fluid that spills out using the drain pan. Share this: Click to share on Twitter (Opens in new window) Click to share on Facebook (Opens in new window) Click to share on Google+ (Opens in new window) Related. © 2021 Speedway Motors, Inc. All Rights Reserved. Transmission cooler lines leaking at the radiator puts car owners in a distressing situation. Please don’t bolt the cooler to your exhaust. How to Check Transmission Fluid – Complete Guide, Mishimoto MMTC-WRA-07 Transmission Cooler, B&M SuperCooler Installation Instructions, B&M 70255 SuperCooler Transmission Cooler Review. Disconnect the transmission cooler lines at the radiator and drain the fluid into a drain pan. Detach the white retainer clip holding both lines to the radiator support. On the longest hills over passes here in CO I've seen temps hit 235. Discussion Starter • #1 • Jul 17, 2014. Transmission lines are exposed to the elements and over time can leak. Often, a transmission will die within a few thousand miles (or sooner) if subjected to 300-plus degree heat. The built-in coolers that reside in the bottom of the radiator are marginal at best. The transmission oil will flow either from the radiator (where you removed the cooler line) or from the disconnected cooler line. Do you really want to risk your transmission on a $1.00 hose clamp? 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. Have a monster radiator but your engine still overheats? SKU # 3998. check if this fits your vehicle. (should have the cooler, one section of hose, radiator clamps (qty 4), hose clamps (qty 4), and fittings (qty 2) to attach to cooler. Transmission cooler lines leaking at the radiator puts car owners in a distressing situation. The plastic rods are run through the transmission cooler and the radiator or air conditioning condensor and secured with the fastener. That is why it is important that any car owner hoping to keep their car’s transmission healthy will need dependable, leak-tight automatic transmission cooler lines to carry that fluid to and from the cooler. I just installed a Be Cool Radiator in my 68 sbc. You should also consider that there is fluid inside of the transmission cooler in the radiator. Disconnect the radiator upper and lower hoses. Now I was also planning in installing a transmission cooler but after installing the cooler I couldn't seem to locate the transmission lines that run to the radiator for cooling the tranny fluid. We recommend AN fittings on any type of high performance type of vehicle such as racing or off-roading. Locate the transmission cooler line fitting at the back of the radiator and remove it by turning it counterclockwise. These are the transmission cooler lines. 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. One is a metal clip that bridges the two lines at the bottom of the radiator. First, make sure you use a barbed fitting to tie into your existing lines. More often than not, your vehicle will have some rubber lines from the factory, but not nearly as much as it would metal. One is a plastic retainer that holds the metal lines to the transmission. This prevents restricting air flow to the radiator. Have a helper crank the engine for just a few seconds. The transmission cooler kit you purchased will include the mountingtransmission oil cooler hardware needed to mount the cooler. Another sure-fire way to tell pressure from return is to disconnect either cooler line at the radiator. Check the transmission cooler kit to see that nothings missing. Learn how to select a torque converter. Every little bit helps, right? Tired of straightening damaged fins or replacing your new race radiator? If you place the cooler in and area with little air flow, a fan is a must. Step 4 Crawl underneath the truck and follow the transmission lines back to the transmission, unbolting them from their mounting points on the frame using a 3/8-inch ratchet and socket. depending on where the leak is, the lines can sometimes be patched, but they sometimes need to be replaced (or fabricated). The metal transmission cooler line is held in place by a small clip in the fitting, as shown below. What parts should you be giving your attention to? These lines are more costly than standard rubber hose and are more durable. Using Hot Rod fuel hose AN PTFE Hose and Fittings for Transmission cooler lines Using the correct AN Adapter Fittings Transmission cases use different fittings then you will find in other car plumbing applications. These fittings are very cost effective and are typically only a few dollars at most and comes in packs with multiple fittings. Transmission lines are pressure lines, and without that barbed fitting you can blow a line off and drain your transmission (not good!). Fuel line will not work and will break down in transmission fluid. First, make sure you use a barbed fitting to tie into your existing lines. The driver side line is the return line to the transmission. Put both line ends into a container and see which one yields fluid. Coupling separation is normally a result of oil contamination and once again excess heat causing hose reinforcement separation. Slide under the vehicle and locate the transmission cooler lines coming from the side of the transmission up to the radiator. I also opted to use this Universal Transmission Cooler Line Kit. The transmission cooler uses coolant from the engine radiator. 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. Trial measure and cut the hose (remember to add 2 inches beyond your rough measure). We can teach you some of the major differences between the Ford and GM-style T5 Flathead transmission adapter kits. Then I replace the fluid and do it again. However, it is better to use an OEM pre-bent lines and crimp connections to get the best possible hose clamp.
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