Transmissions do operate with a lot of pressure. Most of the time using rubber hose and clamps to repair it will only be a temporary solution. Use some fuel injection fuel line hose and double clamp each end with some good quality clamps. The cheap ones will not work well.
It is the transmission cooler hose or line. It runs the fluid through a cooler on the radiator to cool the transmission fluid.
If this vehicle has a transmission cooler then it will have one line to the cooler then another for the return line to the transmission.
that is the transmission return cooler line
I don't know mutch about a Lexus but the rubber hose is should be the return line. the pressurized line should be metal or steal bradedAnswerhose that connects directly to reservoir, is the retrun hose the pressure hose goes from pump to steering
The oil cooler isw up front in a suburban. Get a drain pan and a shop rag. Get under the vehicle with the line wrench to take the line from the cooler off at the radiator. Unbolt the cooler from the frame and take off the line from the transmission. If you are replacing the hose only or repairing it, just remove the hose and replace. Oh! and be sure to replace any fluid loss in the tranny with the correct fluid which any parts store would know.
If it is a manual transmission you do not have transmission cooler lines. If its an automatic they will be on one side of the radiator and you can follow them to the tranny from there.
secure a section or high pressure oil cooler hose over the break until a proper line can be located.
Front ¼" Pipe Cooler feed/out Rear ¼" Pipe Return/in
You probably have a leak in the hose/line that takes your transmission fluid to the cooler (in the radiator). Look for the small tubes/hoses that run from the engine to the side of the radiator; the leak is probably in the area where the metal tube meets the rubber hose. Good luck!
Bad seal? Leaking cooler line?
An external transmission cooler is normally added in line with a vehicles already existing transmission cooler built into the radiator its function is to cool the transmission only. Adding, replacing and or repairing a transmission cooler would only benefit the transmission by cooling the transmission fluid. The transmission cooler is used mainly for cooling transmissions that pull heavy loads like trailers but is also used a lot in racing to keep the fluid cooler which helps reduce transmission overheat or burnout. , EzForJesus
First of all, I'd recommend you to buy the correct transmission oil from the dealer. Dropping the transmission pan can only change a small portion of the automatic transmission fluid (ATF), because most of the fluid is in the Torque Converter. Unless you are also changing the filter, I'd recommend you to do the flush through the transmission cooler line. 1) Find the transmission cooler return hose (on my 08 Fusion, if you sit on the driver's seat, it is the one that is leftmost). 2) Disconnect the cooler return hose from the transmission end. 3) Put the hose into a container with graduated scales. 4) Start the engine (to idle only to avoid damage), when you see 3 Qt of ATF flows out, turn off the engine. 5) Fill 3 Qts of ATF through the transmission oil stick. 6) repeat 3) and 4) three times 7) reconnect the cooler return line 8) fill transmission fluid to the required level (be aware, when you check the transmission fluid, the engine should be running, and you should let the Stick lever go through all the gears beforehand).