How To Replace an Upper Radiator Hose?
Sep 10, †∑ A leaky radiator hose can cause your vehicle to leak coolant, which can lead to overheating and other serious issues. It is sometimes difficult to see damage or wear on radiator hoses, so itís a good idea to replace them at the interval suggested by your ownerís manual. Feb 21, †∑ Learn how to diagnose a bad radiator hose visually, and by feel. Also learn how to replace the upper and lower radiator hoses. Most radiator hoses will last.
Radiator hoses are made of silicone-based rubber, which gradually wears out with time. Sometimes, you may see, those are leaking or fractured. A leaking radiator hose is very risky as it can burst anytime. On the other hand, the coolant will drain out within this cracked coolant hose. You will face overheating your car engine, which can damage engine parts badly.
Here, we will direct you how to replace lower radiator hose. Usually, two radiator hoses are used with the car radiator in cooling system. The upper radiator hose provides coolant from car engine to the radiator, and it connects to the thermostat assembly. Simultaneously lower radiator hose provides coolant from the radiator to engine. The car engine should always remain at normal operating temperature for getting better efficiency.
If you notice lower radiator hose leaking at clamp or other places, you will face engine overheating, which is very harmful to car engine components. So, after identifying the radiator hose leak, replace the hose immediately.
A good quality Drain Pan. Replacing the radiator hose is very easy. If you do not feel confident enough, you can go through the repair manual before starting the procedure. We will brief you step by step tips regarding how to change radiator hose. Park your car in flat surface. Then, raise the hood of your car as well as check the engine, radiator and hoses are in the cold condition or not.
If those are hot, wait till those become cool. You cannot touch them in this condition. When you will find those cool, rotate radiator cap counterclockwise to remove it.
Place the coolant drain pan under the radiator. Trace the drain nut under the radiator. Hopefully, you have found it. Now turn it counterclockwise to open and drain out the full coolant of your car radiator.
Find out lower radiator hose location and trace the clamp at the end of the radiator hose. The hose clamps secure the radiator hoses to the engine and radiator. Use the screwdriver to lose the clamp. Now by twisting the hose back and forth, you can bring it out from the what does a semicolon look like. If you find the hose too tight, you should use large pliers to make it lose.
You will notice grease or rust on the hose fittings, wipe those fittings, and adequately clean rust or lubricant. Compare the new lower radiator hose with the old one for ensuring the same model and design to install accurately. Slide the hose clamps over the end of the lower hose. Then you should slide the whole assembly over the fittings. Use screwdriver or pliers clockwise to tighten the hose clamps. If would be best if you refill radiator with the recommended coolant for your car, but keep in mind that you must tight the drain nut properly before that.
Finally, install the radiator cap. Start the vehicle and allow your car engine to reach an operating temperature, which will allow the system opening the thermostat bulb. Then add antifreeze to go the specified level. Drive your car to find out any leakage and also monitor the engine temperature gauge.
After that, shut it down as well as allow it cool. Then recheck the coolant level for final confirmation. If the coolant is clean and of good quality, you can reuse it. After setting the hose clamps, if you find it week than before, replace it immediately. Put on your safety glasses before starting the coolant replacement process.
Make sure to remove air from your cooling system as trapped air in the engine cooling system can create hot spots or engine damage. Never keep coolant here and there as it is poisonous both for human beings and animals. If one takes it, it will be very harmful to them. Always allow the car radiator and hoses to cool down before beginning the radiator hose repair job.
If you fail to do so, it can result in severe burns. Never leave dripped antifreeze. It is highly slippery. Anyone can get hurt. Hopefully, you have understood how to replace lower radiator hose and realized the importance of replacing the hose when it is leaking.
Never think to drive your car with a creaked or leaking radiator hose. You only need some basic tools and little bit technical skills to replace radiator hose. So, do it at your own immediately just after noticing the cracked or leaking lower radiator hose. We strive to provide you the most useful advice as well as the best parts, tools and car care items for your beloved Car. Your Name required. Your Email required.
How to Replace Lower Radiator Hose
Jul 18, †∑ Slide the hose clamps over the replacement radiator hose but do not tighten them down. Step 2: Install the radiator hose. Slide the hose onto the connector. Then, position and secure the clamps at least 1/4 in. (mm) from the ends of the hose. Aug 16, †∑ Radiator hoses connect the top of the radiator to the top of the engine, as well as the bottom of the radiator to the water pump. Radiator hoses are essentia. Use a utility knife or razor blade to cut the hose linearly where it is connected. Cut through until you feel metal on the inside and then gently pry up the edges and peel the hose end off. Once the hose is removed take the time to clean the surface of the metal before installing the new hose. Use fine sandpaper, steel wool, etc.
The radiator is an essential part of your cooling system. As coolant pass through it, the coolant is cooled and returned to the water pump to cool the engine. Hot coolant is forced through thin passages in the radiator element. Fins disperse the heat across more surface area and air passing over the fins takes away the heat. As your car ages corrosion builds up in these small passages in the radiator element.
This restricts or blocks coolant flow and causes the engine temperature to rise. If your engine is running hot, damage can occur and over time can result in lowering your engine life. This also overtaxes your oil causing thermal breakdown. In this tech article we will go over all the steps needed to replace your radiator. We strongly recommend draining your cooling system before removing your radiator. Just pulling off the lower radiator hose will easily cause a mess in your garage or driveway.
You should drain your cooling system prior to opening it up to prevent a mess. You can access the radiator drain plug while the car is on the ground but if you want more room to work you should jack up and support the front of your vehicle. See our tech article on jacking up and supporting your vehicle. Also you will need to remove the radiator shroud and cooling fan. See our tech article on removing the cooling fan and shroud.
Large Image Extra-Large Image. Remove the cooling fan and shroud. Working at the top of the radiator on the left side remove the small air bleed hose by loosening the clamp. Working at the upper part of the radiator on the left side loosen the clamp of the upper radiator hose. This photo illustrates the other end of the upper radiator hose at the coolant pump housing. You do not need to remove this clamp and remove the hose you can just flex the hose and tuck it out of the way.
We recommend you replace all cooling system hoses when you replace your radiator. If you choose to replace this upper hose loosen the clamp at the water pump housing.
Remove the upper radiator hose from the coolant pump housing. This photo illustrates underneath the car on the right side looking at the lower radiator hose. Some mechanics may have used a long screwdriver and tightened the clamp from the top. Someone has tightened the clamp while it was pointed down from the bottom. Loosen the clamp on the lower radiator hose however it is situated on your car.
This photo illustrates looking down at where the lower radiator hose is attached to the lower neck of the radiator. Remove the hose from the radiator. This photo illustrates the other end of the lower radiator hose at the coolant pipe. You do not have to remove this clamp and hose you can just flex the hose and tuck it out of the way. If you choose to replace this lower hose loosen the clamp at the cooling pipe.
You do not need to remove the accessory drive belt and idler pulley but it does give you more room to work. We have done so for photographic purposes. See our tech article on removing accessory drive belt and coolant pump for further instructions.
If there is a lot of corrosion on the hose you can use a pick or a screwdriver to break the corrosion and lever the hose off. You may damage the hose doing this but if there is a lot of corrosion you should be replacing your hose anyway. Looking down at the right side of the radiator loosen the small expansion tank hose clamp on the radiator side.
If the hose is held on with corrosion you can grab the hose with a pair of pliers and twist it first then try pulling off the hose. Working at the upper radiator on the left side lift up on the clip that holds the radiator to the radiator support. Working at the upper radiator on the right side lift up on the clip that holds the radiator to the radiator support.
At the bottom of the radiator remove the 10mm fasteners that hold the line what is this line for? Both the nut and the bolt are 10mm so you will need a socket and a wrench. Working at the upper part of the radiator on the right side remove the 19mm banjo bolt that mounts the transmission cooler line to the radiator. Do not pull the banjo bolt out all the way yet. Remove the two crush washers green arrows as you pull out the banjo bolt. We strongly recommend you replace these with new crush washers to prevent transmission fluid leaks.
At the bottom of the radiator on the passenger side remove the 17mm line fitting for the other transmission cooler line. Some transmission fluid may come out so be prepared to catch it. Working at the right side of the radiator push it back slightly and remove the 10mm fastener that hold the radiator to the condenser. Working at the left side of the radiator push it back slightly and remove the 10mm fastener that hold the radiator to the condenser. This photo illustrates the right side of the radiator looking down between the radiator and the condenser.
First let the radiator drop slightly to unhook the tab green arrow from tab on the condenser yellow arrow. There are also interlocked tabs on the left side of the radiator that need to be unhooked also. Lift up slightly on the radiator and then back towards the engine. Continue to pull up on the radiator to lift it out. Installation is the reverse of the removal procedure. Got more questions? Or, see what other questions readers have asked about this article All Search Everything.
Need to buy parts for this project? Click here to order! Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Figure 9. Figure Comments and Suggestions: JoHoss Comments: I would like to change just my condenser but cant find out whether or not I must remove the radiator or if I can just remove the condenser on its own?
November 13, Followup from the Pelican Staff: What is the year and model of vehicle? I can see if I have that info. My radiator has 2 support pipes coming up from crossmember that prevents dropping radiator to unhook tab to condensor. Got any solutions? June 3, Followup from the Pelican Staff: What vehicle are you working on? Applies to: W Close this window. Oil Change. Air Filter Replacement. Camshaft Position Sensor. Valve Cover Replacement.
Radiator Hose Replacement. Fuel Filter Replacement. Transmission Fluid Change. Mercedes-Benz Forums. Mercedes-Benz Parts List. Events Gallery. Cars for Sale. Time: 3 hours 3 hrs. Applicable Models:. Radiator hoses, hose clamps, crush washers,. Tape cardboard to the radiator element to protect it from damage while removing.
Replace cooling hoses and clamps at the same time. You should start the job by draining the coolant.