Radiators
There are some things you should be aware of if you would like to repair a plastic radiator, which is likely to be the case if your automobile was manufactured in the 1990s. The traditional radiators do not process fuel as well as plastic ones because they are relatively heavier.
Although many people believe that it is easier for the plastic radiator to break down, this is not really true. Leakage in the storage tank is what usually leads to the breakdown of the plastic radiators. Although the cores of the plastic radiators are usually very good, the tanks tend to be weaker.
It is welding these cores that make plastic radiator repair challenging. It may be better to replace the radiator if the damage to the core is extensive.
Fortunately, most of the damages to the plastic radiators involve the tanks. If you would like to repair the tank, then you will need V groove tool, screwdriver, wrench, pliers, heat gun, air-free plastic welder, and nylon-based welding rod.
Find the damaged part after disassembling the plastic radiator. Disconnect all tubing that may become entangled during disassembly. Check the whole surface of the tank for any signs of damage. Fill the tank with water if necessary so that you can determine the leak.
Determine the leak’s dimension using the V groove tool, which will also help you to position the air-free plastic welder well.
Use a heat gun to preheat the area before you apply the welder. Then weld the leak by melting the nylon-based welding rod.
The cost of plastic radiator repair at an auto body shop is fairly high. If you are interested in fixing a cracked plastic radiator, therefore, you can consider doing it on your own. So long as you know how to go about it, you will find that this is a relatively simple process that will save you precious dollars.
Different sections of the plastic radiator may develop faults, leading to leakage. One of the first steps you need to take is examining the fittings leading to the radiator. If the leakage comes from the radiator, then you will need a screwdriver, soldering iron, tooth brush, acetone, hair dryer, black tie wraps, and a marker or tape.
Understand the plastic radiators
When dealing with plastic radiators, you should not use adhesive, as the pressure and temperature will render it ineffective. You should therefore have a good understanding of how the plastic radiators function.
Penetration
Getting good penetration is important when you weld the tanks and you should preferably use a V grooving tool. Alternatively, you can use the tip of the welder. The glass fibers used will produce crackling sounds and this is normal.
Preheating
It is a good idea to preheat the nylon using a heat gun because of its high melting point. Point the heat gun towards the area you expect to work on until the plastic turns glossy and then allow the heat to get through.
Welding
Remove the welding rod and melt about an inch. Separate the welder and the rod and then work the melted rod inside the nylon. Do this until you get one color, which means that the mixture is good. Melt an inch of rod at a time so that you can work on the nylon before it cools.
Finishing
Smooth the area as much as possible using the tip of the welder.
Then take the following steps to repair the cracked plastic radiator.
Find the crack
Allow the engine to run so that the temperature rises normally. Sufficient pressure will build up after about half an hour. Shut the engine off for the pressure to force the coolant out of the crack. Use either the tape or marker to mark the area of the crack.
Let the tank cool before removing the cap and check whether the crack is below or above the level of coolant. You will need to drain some coolant if it is below the level. Ensure that you have fresh coolant handy before you do this.
Prepare the area
Use a toothbrush and some acetone to clean the area and dry it. Turn the hair dryer on and then hold it close to the crack until the area gets completely dry. Scrub it before blowing once more.
Repair the crack
Press the soldering iron’s tip to the tie until it starts melting. Wrap the tie into the crack by pressing it. Melt one spot so that the tie and neighboring areas turn to liquid.
Let the hot liquid harden before cutting off unused parts of the tie.
Repairing the Plastic Radiator Outlet
Although you should always be careful when carrying out any repair, you need extra precaution when you are repairing a plastic radiator. In many instances, you should just install a replacement radiator. However, depending on the damaged part, you may also carry out repairs. For example, there are different parts in the plastic radiator outlet and you just need to replace the faulty part.
You will find it relatively easy to do this if you have a socket wrench, manual screwdriver, screw extractor, new plate, new screws, and pipes of various sizes.
The plates on the plastic radiator outlets are usually held in position with two screws, which may get stripped. You can easily replace the stripped screws.
Check the damage on the screws you would like to replace so that you can determine the appropriate tool. Try using a regular screwdriver first of all and then use a socket wrench if it fails. However, if you can get a screw extractor, then this is the most ideal tool to use.
Check for any damages on the holes before you replace the screws. Check the plate for signs of damage too. Depending on the extent of damage, it may be necessary to replace the plate.
Check the pipe holes to determine any signs of wear or enlarging, in which case you will need a different size of pipes. In such a case, you will also need to replace the plate.
Although you can carry out some plastic radiator repairs, a time will eventually come when you have to replace it.
There are a variety of tools that you need to perform a radiator flush. Different things may necessitate flushing a radiator, such as checking whether the radiator is in good working condition or when you need to change the antifreeze. It is also a good idea to carry out a radiator flush every year for proper maintenance of your vehicle. Whatever your reasons are for flushing your radiator, you will need the following tools.
You may be surprised at how challenging a radiator fitting can be if you do not have relevant skills. You need to understand what is involved so that you can carry out the process successfully.
Turn off central heating before you start working on radiator fitting. Drain out water from the system prior to removing the radiator in order to avoid leakage. Catch the water in a bucket after opening the square on the off valve using a spanner. Remove the radiator and its fittings, lifting them from the brackets. Follow the instructions on your towel radiator. This is important because there are variations depending on individual models and makes of cars.
Four threaded holes are located on the corners of the radiator, with the two holes at the bottom having radiator threads. The holes at the top have a bleed valve and a blank screw. Screw blanking nut directly onto the radiator, sealing them with special ‘O’ rings. Use a spanner to tighten the fittings and do the same with the bleed screw.
Wrap the tail thread using PTFE tape about ten times before screwing it in place. Use the spanner to tighten the radiator tails too then screw together the radiator valve and radiator tail.
The direction to which the handles of the valve point does not really matter. Use water pump pliers to hold the valves as you tighten the valve nuts and a piece of cloth to keep the jaws off the chrome plate.
Fit the handles after fitting the radiator well. They will push on a splinted shaft on the valve and a big chrome screw holds all of them in place.
You need to take immediate action if your automobile has a leaking radiator so that you can prevent serious consequences. Without the cooling action of the radiator, the engine and other parts of the vehicle can overheat pretty fast, leading to failure.
There are a number of methods that you can use to troubleshoot the problem of a leaking radiator.
Check the electronic displays
The electronic displays on the dashboard play a very important role because they warn you when there is some kind of problem in the car. Some of the things that you will be warned about include the pressure and temperature of oil. There are high chances that you have a leaking radiator if the displays indicate red.
Check the coolant
Checking your car’s coolant reservoir tank will help you to determine whether you have a leaking radiator. There are high chances that the radiator is faulty if the coolant level is too low or the tank is empty.
A quick way of troubleshooting the problem is to pour one liter of water in the reservoir tank. If the water drains fast, then the tank itself is leaking. If the water does not drain fast, then the most likely culprit is a leaking radiator.
Check under the car
Checking under the car will also help you to determine if you have a leaking radiator. Look for wet patches on the ground, which will most likely be colored because many coolants are green. Then look at the cross beam beneath the radiator for sings of wetness.
Check the radiator itself
Check for signs of crack after removing the radiator cap. Check the hose clamps for signs of moisture by running a cloth over them and use your hands to feel the parts of the radiator that you can access.
Ensure that the car is cold before taking these steps.
You can use radiator weld or pellets to fix a leaking radiator. If the leak is relatively large, then take the car to a professional.
When you experience some problems with the radiator thermostat in your car, fixing them may prove tricky if its valves get stuck. However, there are some measures that you can take to solve the issue.
You should understand the possible reasons for stuck valves in your radiator thermostat. One of the likely causes is leaving the radiator valves to stay for extended periods on the stuck position because the valves will tend to stick to one another as they cool down.
Although the stuck valves can be quite challenging, solving the problem is not really as difficult as it may appear at first. There are a few simple steps that will help you to solve the matter.
The first thing that you need to do is peeling the plastic head. You may find it easier to do this when you remove either the nut or ring in the stuck valve. Doing this allows you to have a good view of the pin that protrudes from the body of the valve.
Press in the pin. If it fails to budge, then there are high chances that the jumper is stuck. Use spring pressure to exert more pressure until the pin starts responding. You may need to tap it gently with a hammer, but you must watch against breaking it.
Once the pin can move, press it so that it returns to its normal position.
