How To Repair A Leaky Compressor Regulator
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Fixing An Air Pressure Regulator
Fixing an air regulator offers information technology'south own challenges, for sure. I am very happy to extend from all of us thanks to Ed Parks for these instructions on fixing an air regulator.
It is very kind of him to have the time to put this down and transport it to me for inclusion on this site. Here are Ed's instructions.
If you're trying to fix your air compressor, or you're wondering how to gear up an air compressor problem that y'all're having – check out my air compressor troubleshooting page for a detailed list of mutual air compressor issues and links to handy guides on how to solve your air compressor problems!
Of form, you can also always outsource your air compressor repair – click here for some air compressor repair shops about you.
Step by Step Guide to Fix An Air Pressure Regulator
Step-by-Step Instructions to Repair Air Compressor with a faulty regulator that does not allow adequate air pressure to come out of air hose.
Steps to fix an air pressure level regulator on an air compressor:
- Ostend the diagnosis of a broken air pressure regulator
- Keep some pressure in the tank and prepare for disassembly
- Brand certain compressor is unplugged
- Release all of the force per unit area from the tank
- Remove screws holding cowling / compressor comprehend
- Lay cover to ane side don't disconnect wires
- Remove air force per unit area regulator with wrench
- Remove air compressor regulator knob
- Remove pressure regulator knob control piston
- Remove piston jump from within air regultor knob
- Twist air regulator knob to prepare for reassembly
- Apply lubricant to cylinder walls
- Reassemble the air pressure level regulator knob
- Unscrew brass tank pressure seal assembly
- Make clean pressure regulator manifold
- Clean the spring and rubber seat
- Grind the rubber seat
- Review the safety seat
- Reassemble safety seat, leap and contumely tank pressure seal assembly
- Reassemble and tighten the contumely assembly into manifold
- Reassemble regulator control knob associates
- Reassemble plastic cover onto compressor
ane – Confirm the diagnosis of a broken air pressure regulator.
When the air compressor tank has plenty of air just you only get a brusk outburst of air pressure (only momentarily) out of air hose and compressor'south air hose gauge goes to zero – the compressor regulator is likely faulty.
two – Proceed some pressure level in the tank and prepare for disassembly
Be sure tank is not empty and has some pressure level in tank. Plow Regulator Control Knob counter-clockwise all the way and release all pressure from air hose connector. The air pressure in the tank forces the Command Knob's plastic piston to move back into the Control Knob/Regulator's housing thus preventing harm to the plastic piston when disassembling.
3 – Make sure compressor is unplugged
Safety beginning! Make sure you unplug the compressor, as we're going to be dealing with some exposed wiring.
4 – Release all of the pressure from the tank
Now release all air pressure from tank using the h2o bleed valve on bottom of tank.
5 – Remove screws holding cowling / compressor comprehend
5Remove (vi) screws holding top half of plastic compressor cover on: (ii) from handle and (1) at each corner of plastic housing encompass. The (two) screws in the handle are Machine Screws 10-32 x 1″ Phillips and most likely will strip when reassembled – replace with 10-32 x i 1/4″ Phillips.
6 – Lay cover to one side don't disconnect wires
Lay top one-half of plastic comprehend over to side – no need to disconnect whatever wires.
7 – Remove air pressure regulator with wrench
Remove air force per unit area regulator by using Crescent Wrench and turning hex nut counter-clockwise. Will be tight simply exist gentle so as non to damage o-ring seal. There will be but enough room to get wrench on at an angle with lesser plastic housing still in place when the Control Knob is completely screwed out.
8 – Remove air compressor regulator knob
Regulator Control Knob removed.
9 – Remove pressure regulator knob control piston
Plough the red Control Knob clockwise and the plastic piston with post in the eye (in above picture five) will be pushed out.
10 – Remove piston spring from within air regultor knob
Remove plastic piston, compression spring, and metal disk from Command Knob housing and make clean all parts with a paper towel or rag; don't use anything in housing that will scratch inner wall of cylinder, just make clean out any corrosion. Do not remove the (2) o-rings from the plastic piston unless you lot plan to supervene upon them.
11- Twist air regulator knob to prepare for reassembly
Turn red Control Knob counter-clockwise once more to screw knob out for reassembling.
12 – Use lubricant to cylinder walls
Employ a thin picture of lubricant (would non recommend grease equally it will mucilage up with fourth dimension) – Teflon or Silicon lubricant or o-ring grease to the cylinder walls of the control knob's housing, to the metal disk, and to the o-rings.
13 – Reassemble the air pressure regulator knob
Reassemble the above parts. Be sure the metal disk'southward cupped side is facing to the bottom / inside of the Command Knob. It is easier to get these parts reassembled if you agree the parts every bit pictured below (on the crescent wrench) in your hand and place the Control Knob on tiptop of them pressing them into the Control Knob housing advisedly, not to damage the o-rings. Press in until completely seated like in motion-picture show 5. Sit reassembled Control Knob bated until terminal associates.
14 – Unscrew contumely tank pressure seal assembly
With a big flat screwdriver unscrew brass tank pressure level seal assembly. Do not remove o-ring unless yous programme on replacing it.
15 – Clean pressure regulator manifold
Make clean within of manifold with a newspaper towel or rag.
16 – Make clean the leap and rubber seat
The function causing the problem is the rubber Tank Pressure Seat. Carefully remove the spring with it's rubber seat, clean both parts. What has happened, due to the type of textile, from pressure and moisture the rubber has swelled to the extent that an adequate amount of air cannot pass around the sides of the rubber seat. No demand to remove the rubber seat from the compression spring.
17 – Grind the rubber seat
Using a Dremel with a i/8″ round carbide bit advisedly grind a notch into the (4) sides (the eye of the sides merely, not the corners) of the rubber seat. BE VERY CAREFUL Non TO GRIND TO DEEP.
Upon close inspection of the sealing surface of the safety seat you lot'll notice a circular groove that makes contact with the sealing / mating surface inside of the brass threaded hex bushing. Be sure to non grind any where close to this sealing groove in the rubber or your tank will no longer concur pressure when stored. Practise Non Grind on the corners at all; the corners continue the rubber seat in place and aligned in the brass hex bushing.
18 – Review the rubber seat
Observe depth of the notches is just enough to create a gap for air to come up effectually the rubber when it is reassembled in the contumely threaded hex bushing.
19 – Reassemble safety seat, spring and brass tank pressure seal assembly
Employ a very sparse picture of Teflon or Silicon lube or o-ring grease to the rubber and reassembly into contumely threaded hex bushing.
20 – Reassemble and tighten the brass assembly into manifold
Apply a low-cal coating of lubricant to the o-band and screw brass associates into manifold. Just tighten snugly – no need to overly tighten o-ring seals -, simply good and snug (to tight will cut o-band).
21 – Reassemble regulator command knob associates
Apply a coating of lubricant to the Regulator Command Knob assembly'due south o-ring and besides to it'southward mating surface of the manifold. This o-band volition be adequately easy to cut if non conscientious. Reassemble Regulator Control Knob assembly into manifold, again tighten snugly, but don't over do.
22 – Reassemble plastic cover onto compressor
Reassemble top half of plastic cover to compressor.
This fix will at present let an adequate amount of air to pass around the rubber seat that had swelled over fourth dimension.
If someone can locate a role number and a source for a new condom seat delight mail service it on the parts needed page, and refer to this page too, if you would.
Dave comments
Thanks and so much for your repair instructions well-nigh how to gear up a regulator on the page https://www.nigh-air-compressors.com/fixing-an-air-regulator. Now my Key Pneumatic iii-gallon pancake air compressor, model 95275, from Harbor Freight is working over again. Yippee! I didn't have the proper lubricant, and then all I did was disassemble information technology, and used my Dremel to shave off bits of the rubber Tank Force per unit area Seat, as yous showed. I wasn't sure what yous meant about the "corners", since it was perfectly round, but I but shaved off a trivial from the 4 points of a cross, reassembled information technology, and at present it releases air again. Earlier, it would simply do one brief puff of air, and and then the regulator pressure level gauge would bottom out at naught, and accept no more than pressure, even though the tank was fully pressurized.
Note added: I didn't have a screwdriver big enough to remove the Tank Pressure Seal, but a socket wrench worked very well. Putting it together, I just needed to push down on the head of the Tank Pressure Seal to shrink the spring and start threading it in a little by paw, and then I could apply the socket wrench to tighten information technology the residual of the way.
Fixed now, thanks to you lot! Yous have a very informative site, and I greatly capeesh your work.
_______________________________
Response: Well Dave, the originator of these instructions was Ed Parks, and we would very much like to send him your comment but take no style of reaching him. I promise he reads your kind words. Cheers!
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