How to Adjust a Pressure Washer Unloader with Larry Hinckley from PowerWash.com
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- Опубліковано 14 жов 2012
- Watch how to adjust a pressure washer unloader with Larry Hinckley, Sr. for PowerWash.com. Larry explains and demonstrates the proper way to adjust a pressure trapping unloader.
Need an Unloader: www.powerwash.com/pumps-and-re...
Find a pressure gauge: www.powerwash.com/parts-and-ac...
You should always know the GPM and pressure (PSI) that your machine is designed to run prior to doing any work on it. Use a Nozzle Selection Chart to determine the best nozzle for your purposes or contact a pressure washer repair facility for that information. Read a Nozzle Chart: www.powerwash.com/nozzle-chart
After installing a new pressure trapping unloader, you will need to adjust the unloading pressure. The first step of the unloader adjustment process is to install a pressure gauge at the pump before the unloader for greater accuracy.
Once the gauge is installed, start the engine without a nozzle on the gun and establish a flow of water through the system in order to flush any foreign materials from the lines. Next, install a new fan spray tip that is properly sized to give you the desired pressure for the gallons per minute that your pressure washer is designed to run. Squeeze the trigger on the gun and monitor the pressure reading on the gauge.
The object of this process is to adjust the unloader until the gauge indicates the pressure that your machine is designed to run while the trigger is depressed. When you release the trigger, the needle on the gauge should momentarily raise to a maximum of 300-500 psi above your operating pressure. As you are adjusting the pressure, if the gauge's needle stops rising before the machine reaches the desired pressure, stop the adjusting process and determine why.
You can learn more specifics about pressure washing equipment through our PowerWash 102 course: www.powerwashu.com/more-about...
I hope you enjoy and learn something new from this adjust pressure washer unloader video. If you have any questions regarding this video and the tools that I have used then feel free to comment below.
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I’m going to adjust mine now . Thanks for the advice !
Great job Larry you answered all of my questions
Perfect! I’ve been searching for too long. Found this! Top shelf video. Thanks very much
Excellent job Mr. Larry... You are absolutely the hands down best teacher of this stuff I've seen yet. Step by step, concise incredibly thorough and detailed. What are these other guys dart around from one thought to another you stay on course like a steady ship in the night. You are a natural at this. Probably decades of understanding it and experience and wisdom that's irreplaceable. Thank you again and keep sharing the wisdom.
your an idiot. he was terrible
Thank you very much for your important information. keep smilin
Thanks Larry. you helped me solve my problem.
RIP Larry, you will be missed...
Yes he will
The pressure gauge is installed before the unloader or on the head of the pump to get an accurate spike reading.
Check the description area for a link to where to buy a the pressure gauge used in the video.
Great quick info. Appreciate ya 👍
Very informative.
Thank you sir... Very helpful video. 👍🙏
Most welcome
Thank you
Great video, what size tip do you use to set pressure?
A couple quick questions for you Mr. Hinckley:
Back-story: In an effort to get away from an aluminum manifold pump, I just purchased a (brass) slightly more powerful pump than OEM. The EBHP rating on the old pump was 3.6. The new one is 4.3. My questions are:
1) Is a 5.5hp gas engine adequate power for this newer pump?
2) If not, may I use the unloader valve to effectively reduce the operating load?
3) Where might I find one of those gauge assemblies you use in this video?
Thank you!
I have a upright heated 1500 psi pressure washer with a TT9061 General Pump. I bought a new unloader and was told to set it by the pressure gauge. Can you tell me where and how to install the pressure gauge, it didn't come with one on it when I bought it.
should you adjust the speed on the engine to the pressure you change on the pump ???
Great video
I’m having trouble with mines I can see it jumping when the trigger it’s not press. The engine will rev up and down. And idea what could be?
I can’t adjust mine I got a new thermal and boost valve. I can see the unloader jumping with the trigger it’s not being pull. But it engine Revs from 2500 to 3000 psi on the gauge. Need help
What were the pressure gauge numbers? (What are the parameters ,eg., 0-60, 0-100)
hello i have a 3100psi subaru and i get a strong kick and hard to press the trigger also engine dies and backfires loud most of the time? i took out the unloaded valve and the pin moves freely and i took it apart and all looks clean. Maybe its just turn clockwise to much ? i did notice theres a white little plastic oring and it was a hairline crack in the unloadr valve assembley would that affect anything ?
My pressure is 3900 when on the trigger but is spiking to 4800 when in bypass mode? Why is this? How can I correct it?
Thanks.
The pressure gauge should be sized to accommodate the pressure rating for you particular machine. For example, if you have a machine that does 3,000 PSI get a gauge the is rated for a higher PSI - 4,000 to 5,000.
HOLA A QUE SE DEBE ESTA RECOMENDACION?
Great tips, going to get me a pressure gauge to see how far off i am
best video explanation
Great vedio this was perfect
So if my Pressure washer is 3000 psi. When I’m holding on the trigger gauge should be 3000 psi and when I let go it should be like 3300?
With that being said, I guess the tip size doesn’t matter.
@eddiddy hope ur right I don't hav a 6.0tip my pump it 5.5
@@edesir what he failed to mention is it should be 3000 psi with the 0° red tip if you do not use the 0° red tip like myself who rarely goes narrower than the 15° yellow tip you need to adjust your machines unloader accordingly. Key thing to pay attention to is do not let it go above 400 PSI above the rated pressure of your machine when you are not depressing the trigger on the gun. IE: when you let go of the the trigger on the gun and your machine is rated for 3400 PSI the standby pressure should not be any greater than 3800 PSI. Hopefully this makes sense to you. In this video he was using the green 25° tip which is why the pressure was too low for him but it probably is where it should be if he puts the 0° red tip on the wand. Manufacturers warranties will be voided though if you blow your pump and tell them you adjusting the pressure for the next nozzle down from the red-nosed or because you don't use it they will void the warranty is supposed to be adjusted for the red 0° tip only.
@@Brad.W Great tip!! ( no pun intended ) :) I never used the red tip and adjusted mines w the green tip. So if i were now to use a red tip, i could potentially blow a seal.
@@edesir to be fair that's how I knew because I just for the orange tip on some random day I needed to use the red 0° needless to say it was a bad idea the pump seal within the first hour on a triplex pump from the too much back pressure.
Can a 4000 psi hose cause damage to a 4400 psi pressure washer? Or is it possible to adjust the pressure from the unloader to accommodate for the hose? Thanks
No! It'll be the other way around. If your pressure washers psi was set higher thn your hoses max psi rate it will burst your hose so its best to keep the psi on your pressure washer lower than the max rate on hose
When purging the system with no spray tip use caution as sometimes the rubber O ring will be blown out.
I just bought a DeWalt 3600 PSI machine recently. I turned the pressure down at the unloader to wash my car. How difficult should it be to turn that thing? I was afraid I was going to break the plastic handle. Also, it's so tight I had to undo the hose because otherwise I can't get my hand around it to grip tight enough. I tried leaving the hose on and turning the pressure back up to do my rims and was rewarded with a nice burn on my forearm where I touched the exhaust accidentally, trying to get an angle on the thing. It's not vertical like yours, or like in the DeWalt manual, but sticks out the side and is between the hose inlet and the frame. Really poor positioning. Should it be that hard to turn? Just use pliers next time?
It's best not to adjust the pressure by changing the unloader setting. Here is another video I made that explains this ua-cam.com/video/3mGkOE6awms/v-deo.html
Does the nozzle and hose length effect the psi reading when adjusting the unloader? I have a 5.5 gpm at 2500 psi and 200 ft of hose, so if nozzles do effect it, which nozzle should I use to test and set the unloader?
Use the nozzle that is rated for the machine. Install the pressure gauge as close to the pump as possible. Now you set the unloader
@@Powerwash white, green, red nozzle? I guess I don’t understand what that means
Any ideal what wrong with my pressure, it is work on yellow, green and black tips, but the pump will stop and go when I using white or red tips!
You mos likely have the wrong sized red tip
Thanks. Maybe preowner got wrong size for red and white tips
Well he'll yea brother, AMEN BROTHER!
thank you
Does it matter which spray tip you should use while setting it?
Great question! It depends on the GMP and PSI of your machine, you will want to use the tip that is right for your machine. Feel free to call us at 1(800)-433-2113 or go to powerwash.com/nozzle-size-calculator/
Thanks
No problem
what machine is that? i have the same one but am having trouble identifying the model.
That is a Pressure Pro 4040
Is this the same as John Hinkley Jr.?
As the person that attempted to kill Ronald Regan? No relation
if i have a 4000 psi pump. what should i set it on 4000psi ? if i set it on 3000psi would that harm anything or would that be easier on the pump ?
yes, set it at 4,000 PSI
Dezmar Perez. thank you for a more detailed explanation ! just so im clear running it at 2500 psi is bad for a 4000 psi pump correct ?
Why would running a lower pressure be bad?
Good video but I think you need to take into account there is pressure loss at that gauge. Meaning that the pressure can be 500psi+ at the head HIGHER than the pressure at the outlet. Running the risk of over running the head pressure is damaging to say the least.
Great comment. Yes, the the closer to the head of the pump the better for checking pressure. I will say in my 40 years of working on equipment that I have not seen a drop of 500 PSI going thru the unloader. I have however seen a drop of 500 PSI after going thru the coils on a hot water machine follow by 200 - 300 feet of pressure hose. That is not uncommon.
@@Powerwash Given the loss going through the hot water coils, how should you set the unloader (still set the pressure before the coils)?
@@buildstoys Yes, always measure and set the pressure as close as possible to the head of the pump.
@@Powerwash Thanks for the reply. So do you set pressure with the coil removed from testing (and then when everything is back inline, your wand pressure could be a few hundred PSI lower going through coil/hose)?
@@buildstoys The easiest thing is to mount the pressure gauge at the head of the pump. That way you always know what the pressure is at the pump.
Hi, I have a 4200 psi rated BE commercial pressure washer, has a Honda gx390 and 67dx39g1l cat pump. I recently bought a pressure gauge to measure psi from the pump. I attached after the unloader and got readings of 4200 psi at operating pressure(wand trigger squeezed) and 4600 psi bypass pressure(wand trigger released). Is this normal readings or do I have to adjust the pressure down. How to I adjust the pressure to be in accordance with my 4200 psi rated machine.
I have the question
Did u find an answer?
@@Daniel-yl4xj no i did not but I did turn pressure down just for my peace of mind
@@lambboy3566 oh how much psi did you turn it down too? I heard 3500 is best for 4gpm machines
@@Daniel-yl4xj i turned it down so that bypass pressure was 4200psi and operation dropped to around 3600psi give or take
I just blew my unloader up. Wish I'd watched this first.
My pressure washer is leaking and no pressure it has a broken piston
How can I find them I,m in Zimbabwe
Hello Larry Hinckley, Sr.. We watched your video at: ua-cam.com/video/aWcdl3f1gaw/v-deo.html . Do you have any experience with resolving overheating in CAT pressure washer pumps? We own a CAT Pump Model 2SFX30GS. It has developed an overheating problem. It overheats after 3 mins run time. Our Pump Tech replaced Valves, Valve seats, Seals, Bearings and Unloader. Can you offer some advice as to why overheating still occurs? The original overheating event melted the Oil Fill Red Cap. We're not certain but the overheating seems to be occurring in the crankcase. Thank you.
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He’s about to die from diabetes on camera
he soudns like he is having breathing issues
To many Pall Mall's.