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Main Menu	FAQ What does "pulsating " mean? Is Heat Needed To Flush a Cooler? You wouldn't take a bath wothout using soap What does "pulsating" mean? Hecat began production of its air operated pulsating flusher in 1983. Sometime later Hecat applied for and was awarded a patent for its pulsating process, using no moving parts. This patented process utilizes a pressure differential between two tanks within the flusher. This sends a slug of flushing fluid followed by a blast of air and then another slug of fluid and another blast of air and so on. The liquid has a blasting and impacting effect on contaminants within a transmission cooler and is sometimes referred to as being similar to a "water pick" effect. Testing of this process has proven it is the most effective way to dislodge and back out larger debris trapped at the inlet of a cooler or heat exchanger. For flushing transmission coolers, heated flusher manufacturers will claim that heat is required to allow these particles to be released. This has not been proven to be true. The pulsating action is so effective and proven by years of success that it has become a standard feature that technicians require in a flusher. For that reason all of our competitive flusher manufacturers are trying to incorporate some form of pulsing to meet this demand. Without the use of Hecat's technology that accomplishes this process with no moving parts, they have resorted to "banging" valves on and off, and stopping and starting pumps. This drives up the initial cost of their product and produces multiple wear and failure components due to the constant and abusive cycling. Pumps require lubrication and this limits the use of common flushing chemicals and solvents, which will cause pump failure due to lack of lubricity. Hecat flushers are economical, reliable, and effective. Designed to produce a quick return on investment and years of trouble free service and profits. Hecat is flattered that our competitors are trying to copy our pulsating action with their "reversing" feature but don't be fooled, we are the manufacturer of the Original Patented "Pulsator". Is heat needed to flush a transmission cooler? No. Hecat's research into thermal bypass valves and the other theories that claim to support heated flushing has yielded some interesting results as outlined in the following paragraphs. Transmission fluid as a flush : It was the hot transmission fluid breaking down from excessive heating and cooling, lack of service, transmission or toque converter failure that left the contaminating holding sludge and varnish deposits in the cooler. Flushing with heated transmission fluid is not going to clean the cooler. Transmission fluid is not a flush. The transmission itself was a heated transmission fluid flusher and it left the sludge we want to get out. If hot transmission fluid was as effective as the heated flusher manufacturers claim then flushing would not be necessary at all. Do you clean hard parts with hot transmission fluid? Cooler expands and contracts : The concept that the transmission cooler expands and contracts when heated, enough to trap, bite, or hold the metal and other contaminants is false. If there were some minor expansion and contraction it would have the same proportional effect on any metal contaminants. There is no way that enough expansion occurs to give the cooler "teeth". Also, given the temperatures required if it did occur, the heated units cannot produce enough heat to duplicate. The hammering effect of Hecat's Patented Pulsating action will dislodge trapped particles, not heat. This is why the heated flusher manufacturers have added "reversing" which translates to pulsing. Chrysler's thermal bypass valves : These valves are being used primarily in northern states to prevent "over cooling". The Chrysler technical bulletin information we gathered indicates that you should first flush through the bypass circuit including the bypass valve. Then install a plug (Chrysler special tool #8414) in place of the easy to remove bypass valve and then flush through the cooler circuit. The plug can be purchased from dealer parts and there was no reference to any heat being required to accomplish this flushing process. Hecat's Chrysler spring lock adapters (Part #111746) will also allow you to bypass the anti-drain back valve which will allow you to complete the recommended back flush and flush procedures as outlined in the flushers instructions. Ford's thermal bypass valves : Research yielded one technical bulletin indicating they use a heated flusher to flush transmission coolers for all models. With the following caution statement "This flusher cannot be used on vehicles equipped with the temperature bypass-type transmission coolers currently found in 1998-2003 Crown Victoria, Grand Marquis, Town car, etc". This indicates to us that even with a heated flusher it cannot be done on the units with the bypass valve. The cooler on these models is not in the radiator but rather a separate unit of aluminum stack plate design with a dual circuit for transmission and power steering. The technical bulletin recommends it should be removed and disassembled for cleaning. Ford's larger trucks (F250, F350, etc) have a thermal bypass valve that is located on the side of the transmission and bypasses the fluid from port to port and has no effect on flushing the cooler or lines. Safety : In California, a Liability & Workers Compensation Insurance Agent stated that he would be concerned if one of his repair shop clients were to purchase a heated flusher. If discovered upon inspection of his client's new equipment he would probably require an increase in the Liability-Workers Compensation premiums. His comment was "can you imagine how much you or one of your employees could be injured if sprayed with 185 degree oil at 100 psi". Another question was whether or not they have UL certification or have been tested to meet UL standards. Smoke & Mirrors : One expensive ($4400.00+) heated flusher manufacturer claims to go way beyond pulsating flushing. They claim that you need their cooler flusher because of today's advanced electronically controlled transmissions and therefore you need their more technologically advanced flusher. There is no dispute that the transmissions, engines, and cars in general have advanced in technology and electrical controls. These technological advancements have definitely increased the importance of cooler flushing. But we are talking about flushing a simple transmission cooler, a simple heat exchanger that has not changed. We could also use our web site to create marketing hype such as test data from an "independent lab" and testimonials from "the quality manager". Because we have also sold to independent shops of major franchise chains and OEM's, we could also list those names and state "many companies recommend or require our equipment" but we are not interested in engaging in deceptive marketing. Save your money for technologically advanced diagnostic equipment where it is really needed and employ an economical and effective Hecat Pulsating Transmission Cooler Flusher for your needs. You wouldn't take a bath wothout using soap Why change a transmission without properly flushing the oil cooler? If you are replacing or rebuilding a transmission , chances are it is because the inner workings are worn beyond use. This includes the friction plates, bushings and bearings. Even under normal conditions, transmission parts wear and leave a trail of metal, carbon, friction material and other harmful contaminants in the oil. All of this stuff has been flowing through the lubrication system - this includes the oil cooler. Rubber cooler lines, such as those on most Toyota transmissions, break down over time and deposit bits of rubber throughout a transmission . Don't contaminate the new transmission and oil with leftovers from the old transmission . One of the simplest, cheapest and most important ways to ensure a longer life for your reman transmission is to flush the cooler lines. This includes external coolers and external filter lines, as well as standard radiator coolers . Clean oil and compressed air are not enough. Agood pressurized solvent, such as Joseph Industries Cooler Flush is the proper way to guarantee that all of the grit and sediment are removed. Proper transmission cooler cleaning can help prevent premature failures and prevent voiding your warranty. So do yourself a favor and get some "SOAP" for your transmission cooler.
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FAQ

What does "pulsating " mean?
Is Heat Needed To Flush a Cooler?
You wouldn't take a bath wothout using soap

What does "pulsating" mean?

Hecat began production of its air operated pulsating flusher in 1983. Sometime later Hecat applied for and was awarded a patent for its pulsating process, using no moving parts. This patented process utilizes a pressure differential between two tanks within the flusher. This sends a slug of flushing fluid followed by a blast of air and then another slug of fluid and another blast of air and so on. The liquid has a blasting and impacting effect on contaminants within a transmission cooler and is sometimes referred to as being similar to a "water pick" effect.

Testing of this process has proven it is the most effective way to dislodge and back out larger debris trapped at the inlet of a cooler or heat exchanger. For flushing transmission coolers, heated flusher manufacturers will claim that heat is required to allow these particles to be released. This has not been proven to be true.

The pulsating action is so effective and proven by years of success that it has become a standard feature that technicians require in a flusher. For that reason all of our competitive flusher manufacturers are trying to incorporate some form of pulsing to meet this demand. Without the use of Hecat's technology that accomplishes this process with no moving parts, they have resorted to "banging" valves on and off, and stopping and starting pumps. This drives up the initial cost of their product and produces multiple wear and failure components due to the constant and abusive cycling. Pumps require lubrication and this limits the use of common flushing chemicals and solvents, which will cause pump failure due to lack of lubricity.

Hecat flushers are economical, reliable, and effective. Designed to produce a quick return on investment and years of trouble free service and profits. Hecat is flattered that our competitors are trying to copy our pulsating action with their "reversing" feature but don't be fooled, we are the manufacturer of the Original Patented "Pulsator".

Is heat needed to flush a transmission cooler?

No. Hecat's research into thermal bypass valves and the other theories that claim to support heated flushing has yielded some interesting results as outlined in the following paragraphs.

Transmission fluid as a flush : It was the hot transmission fluid breaking down from excessive heating and cooling, lack of service, transmission or toque converter failure that left the contaminating holding sludge and varnish deposits in the cooler. Flushing with heated transmission fluid is not going to clean the cooler. Transmission fluid is not a flush. The transmission itself was a heated transmission fluid flusher and it left the sludge we want to get out. If hot transmission fluid was as effective as the heated flusher manufacturers claim then flushing would not be necessary at all. Do you clean hard parts with hot transmission fluid?

Cooler expands and contracts : The concept that the transmission cooler expands and contracts when heated, enough to trap, bite, or hold the metal and other contaminants is false. If there were some minor expansion and contraction it would have the same proportional effect on any metal contaminants. There is no way that enough expansion occurs to give the cooler "teeth". Also, given the temperatures required if it did occur, the heated units cannot produce enough heat to duplicate. The hammering effect of Hecat's Patented Pulsating action will dislodge trapped particles, not heat. This is why the heated flusher manufacturers have added "reversing" which translates to pulsing.

Chrysler's thermal bypass valves : These valves are being used primarily in northern states to prevent "over cooling". The Chrysler technical bulletin information we gathered indicates that you should first flush through the bypass circuit including the bypass valve. Then install a plug (Chrysler special tool #8414) in place of the easy to remove bypass valve and then flush through the cooler circuit. The plug can be purchased from dealer parts and there was no reference to any heat being required to accomplish this flushing process. Hecat's Chrysler spring lock adapters (Part #111746) will also allow you to bypass the anti-drain back valve which will allow you to complete the recommended back flush and flush procedures as outlined in the flushers instructions.

Ford's thermal bypass valves : Research yielded one technical bulletin indicating they use a heated flusher to flush transmission coolers for all models. With the following caution statement "This flusher cannot be used on vehicles equipped with the temperature bypass-type transmission coolers currently found in 1998-2003 Crown Victoria, Grand Marquis, Town car, etc". This indicates to us that even with a heated flusher it cannot be done on the units with the bypass valve. The cooler on these models is not in the radiator but rather a separate unit of aluminum stack plate design with a dual circuit for transmission and power steering. The technical bulletin recommends it should be removed and disassembled for cleaning. Ford's larger trucks (F250, F350, etc) have a thermal bypass valve that is located on the side of the transmission and bypasses the fluid from port to port and has no effect on flushing the cooler or lines.

Safety : In California, a Liability & Workers Compensation Insurance Agent stated that he would be concerned if one of his repair shop clients were to purchase a heated flusher. If discovered upon inspection of his client's new equipment he would probably require an increase in the Liability-Workers Compensation premiums. His comment was "can you imagine how much you or one of your employees could be injured if sprayed with 185 degree oil at 100 psi". Another question was whether or not they have UL certification or have been tested to meet UL standards.

Smoke & Mirrors : One expensive ($4400.00+) heated flusher manufacturer claims to go way beyond pulsating flushing. They claim that you need their cooler flusher because of today's advanced electronically controlled transmissions and therefore you need their more technologically advanced flusher. There is no dispute that the transmissions, engines, and cars in general have advanced in technology and electrical controls. These technological advancements have definitely increased the importance of cooler flushing. But we are talking about flushing a simple transmission cooler, a simple heat exchanger that has not changed. We could also use our web site to create marketing hype such as test data from an "independent lab" and testimonials from "the quality manager". Because we have also sold to independent shops of major franchise chains and OEM's, we could also list those names and state "many companies recommend or require our equipment" but we are not interested in engaging in deceptive marketing. Save your money for technologically advanced diagnostic equipment where it is really needed and employ an economical and effective Hecat Pulsating Transmission Cooler Flusher for your needs.

You wouldn't take a bath wothout using soap

Why change a transmission without properly flushing the oil cooler? If you are replacing or rebuilding a transmission , chances are it is because the inner workings are worn beyond use. This includes the friction plates, bushings and bearings. Even under normal conditions, transmission parts wear and leave a trail of metal, carbon, friction material and other harmful contaminants in the oil. All of this stuff has been flowing through the lubrication system - this includes the oil cooler. Rubber cooler lines, such as those on most Toyota transmissions, break down over time and deposit bits of rubber throughout a transmission . Don't contaminate the new transmission and oil with leftovers from the old transmission . One of the simplest, cheapest and most important ways to ensure a longer life for your reman transmission is to flush the cooler lines. This includes external coolers and external filter lines, as well as standard radiator coolers . Clean oil and compressed air are not enough. Agood pressurized solvent, such as Joseph Industries Cooler Flush is the proper way to guarantee that all of the grit and sediment are removed. Proper transmission cooler cleaning can help prevent premature failures and prevent voiding your warranty. So do yourself a favor and get some "SOAP" for your transmission cooler.