How To Change Your Cat Air Compressor. Remove And Install Air Compressor.
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- čas přidán 7. 09. 2024
- This video describes how to change the air compressor on a Cat Diesel Engine. While not the most technical component to change, this video talks about how to swap the fittings, when the engine needs timed, reseal the compressor, and when to change the hoses.
I finally did the job myself and what a great experience it was. doing an awesome job with you tips and pointers you gave in your video I had to change a total of 6 hoses and a lot of back and forth to the Caterpillar dealer. But the results came out great. I work with a bunch of guys you work on there own trucks and they were able to help me with finalizing the work. Thanks again.
What are the Hose Sizes?
Hello, just wanted to say I find your videos to be informative and invaluable. I own a 1995 Beaver Marquis motorhome with a 3176B CAT engine. Although many of your segments pertain to newer engines i think the cat specific tips are fairly applicable regardless of the engine. I especially like the troubleshooting tips you provide. I have changed fluids and filters on my engine and have made a minor repair to the connection between the water pump and oil cooler. Your videos are giving me the confidence to take care of my huge engine (compares to my v6 care engine) and hopefully what to look for to avoid problems on the road. Thanks for putting out quality information.
You got great videos 👍 always learn something new.. I never thought that blowby could also be caused by a worn air compressor.. good stuff
Thank you for giving the "Torque spec" for the mounting bolts, I couldn't find it anywhere!
I got my foot in the door for diesel technician bout 3 months ago. Found out 2 months in the guys I work with don't know sh*t! We just send everything off to the dealership.
Its embarrassing saying I'm a diesel tech I can't fix anything! I've learned more on your videos than the months at this dead beat job 🙁
What a great video, you didn’t miss a detail and gave us a lot of useful tips. I don’t understand how you don’t have more subs.
You awesome thank you for your video it help me a lot. My truck just broke down on the road
Great video very informative thank you
I’m having trouble removing the air compressor. It has the power steering pump mounted on the back. Any schematics or hints would be great. Your videos are the best!
+Brittany McCoy If it has the power steering pump on the back you might have a C7. There is a bracket that is behind the power steering pump that has to be removed after the power steering pump is removed.
Can you add a video showing how to time the air compressor on a c-7?
Make sure to replace, and install the pressure relief valve in the compressor head. In cold climates, moisture can freeze in the discharge line, and blow the compressor cylinder head gasket. I've seen it happen many times.
Can you please explain how to do a bypass to see if the compressor is passing air pressure to the cooling system ????
I thank you sir..I have an oil leak behind my compressor so it must come off for the fix and I also need a new steering pump put on so going to do it all in one shot. Thanks again
Very nicely edited thanks for the well made video. HELPFUL
I would add that there is a haldex inlet check valve kit available on non-turbo applications (2007 and newer) cat C13/C15 equipped with EL365's to address the oil consumption issues that plague these things due to high inlet vacuum. Check haldex bulletin L31300
What would the torque spec be for a C13 where the the bolts thread directly into the the aluminum front structure ?
Always like your videos! I'm in College right now taking a Truck and Trailer mechanic class
+Sebastien Hache Thank you for watching.
Even if you do not change the oil supply line, you should pull it off and blow air through it. I have seen oil lines that were still fairly flexable have the inner liner come loose. That can cause a bad oil flow problems to the compressor . i have also installed reed valves on the intake of Cat compressors. These engines will pull a vacuum on the intake at slower idle speeds. That causes the intake to suck oil up past the compressor piston rings into the head of the compressor. When the compressor kicks in to pump air, that oil gets pumped into the air system. Most experienced drivers I know idle them at 900 rpm to create a slight amount of boost to prevent the oil pumping, but the reed valve on the compressor intake is a better answer to me because it allows lower idle speeds. Just my experiences with the cat engines.
It's much easier in a shop. My last compressor change was under an overpass in Atlanta. Roadside, wrap rags around the coolant lines and clamp them off with vice grips.
Lol nice 👍 we changed the alternator in a -12 F Nebraska 😂
Nice ty for shearing,working on a Cat C-12 Peterbilt
Oh nice. I only work on macks.....rear engine gear train sucks! Air compressor tucked nice and tight under the cab lol
On my 2005 cat c13 we changed the compresssor, there were some air lines that connected to a box with two air line connections. What is that box? It’s in the engine compartment and almost seems hollow?
Hey @Adept Ape! I'm sooo happy we ran by this video! We have oil in our air tanks when we purge, so I think we need a new air compressor on our CAT 3126. We had a truck mechanic look at the system and he said we did NOT have an air dryer on it (ugh!). Originally, we bought the school bus in Phoenix, AZ and drove it up to Ontario, Canada, where we're doing the conversion. So we definitely need to get this fixed.
Do you have a video on installing an air dryer on the CAT 3126? I'm trying to find it on your channel! This one on changing the air compressor seems pretty straight forward and based on your video, I think this is one of those projects that we'd be able to take on!
Thanks so much! Loving your videos!
- Brian + Erin
This guy is one of the best!
Good video
i have a 2006 kendword ISM Cummins engine and need to replace my air compressor there is no time in on it ????? just replace it can't find no videos on it keep up the good work you doing
Should have saw my aprentice's face when he finished and had the truck running when I asked him if he timed it properly! hahaha
+Blue waffle cone Those C7S and C9S engine air compressors actually are timed believe it or not.
The Cummins service manual says to time the air compressor as well. It's a little known detail most techs. overlook. Doesn't hurt anything, just allows the compressor to operate in unison with the harmonics of the engine. Back in the day, you could walk across a truck stop parking lot, and hear the big cam Cummins compressors that weren't timed. They would emit a fluctuating chatter, on the loaded cycle.
You mentioned on a C7 you have to pin it because it's timed. How is that done?
I wish I had found your videos years ago. I would have so much more money in my pockets. You do a great job in all your vids your descriptions are perfect.
can you tell me how I can tell if I have a C7S engine ?
+Dale Brandt It is actually pretty easy to tell. Find the engine serial number on either the valve cover or the front structure, if the serial number starts with C7S them you have one, if it is a SAP or WAX for example then you have a normal C7.
Great info!!!
Getting a little more then usual blow by from the vent tube on a Detroit 12.7.
Talking to fellow drivers and mechanics they all said engine. Not loosing a lot of oil. How can I narrow down my problem and how can I test to see if it's comeing from the air compressor? By the way very little to no smoke comeing from exhaust..
Thanks
If you have oil in the compressor do you change the whole air dryer system or just the air dryer cartridge? After changing compressor
thanks for the video . 👍
good videos, I would like to see a e model fuel pump video and spring upgrade
It is a Haldex 365 manufactured air compressor. Why are the supply coolant line into the rear of air compressor head, when read Haldex manual, the supply coolant line can be plumbed into the air compressor block ? Which would give better temperature control and coolant flow for better uniform air compressor block temperature for rings and pistons. could rings be getting hotter etc loose tension , thus becoming oil burner?
Looking all over for the part number for the air dryer filter have a sdp same air dryer. Tya
Had to do that on a 936c one February not cool, frozen , in the woods ran the loader for 10 minutes before I started just for some heat ..
Just bought An 05' freightliner with c7.truck sat for 6 years due to a couple non mechanical issues.. it runs excellent, only 165k. I washed your videos on the Huei issues, and I'm debating whether or not it's worth pulling the. Compressor to replace the supply line ( has some cracks on outside) or just leave well enough alone. Also contemplating on just buying the ifs kit and having the most downline protection .. any input
Please I have 07kw with cat c15. I see oil in coolant. Where should I start troubleshooting? I see oil around compressor
Thanks
Hello sr hope you doing good i been watching your videos i got subscribed i have learned si much but my truck got a issue that I little confused 😕 so I don't know I have to replace a compresor or just the repair kit that the cat dealer has sold me ? The compresor its not leaking oil or air, but don't build air quickly enough also when I stop at the stop light both of my air gage go from 110 psi to 60 psi in less than 30 seconds, my part number they sold to me its 335-6328 its a little piston with a sprint and few gasket
My question its this can solve my problem or I have to buy a new air compresor?
Mine a c15 cat in a 05 379 Pete I have changed air compressor before with the updated intake braided line my problem now is off elbow to intake line is stripped now any solution on repair on stripped thread on air compressor in using ratchet strap and rope to hold down elbow besides that air compressor works normal I just replaced air compressor 2 years ago
Good one Adept. Let's enjoy 2017 together mate
+Muchie Thank you, Happy new year almost
Hey ape man !! No break in ?? New compressor needs to get hot and seat the rings or it will pump just as much oil as the old one !! Crack the hot line so the comp stays in loading mode and let er get good and hot ! Am i wrong ? Is that not an important step ?
Thank you for that instructual video..is it possible to make a C7s and C9s air compressor timed or penit video
Should I be getting air blowing back thru the intake valve after the air tanks have filled?
Can you show the three bolts that are inside the front cover that comes through and holds on the air compressor the three bolts that has the rubber seal for C15 can you show the insulation for a shortcut to seal from leaking on the outside around the compressor
C13 cat keeps building up and making dryer purge continuously cannot figure it out pressure just goes up to 120 then purges down to 100 then back up ??
My 2006 KW with a Cat C-13 Acert isn't building air.
Or to say 45 minutes from zero air to 120 psi. at 1000 RPM.
I removed the airline from the compressor and it seems to be pumping air with the engine running but I don't .have a gauge on it. No oil in the air.
Eventually, the air dryer does pop at 120 psi. What should I do next?
HELP PLEASE !!!
am having a problem with the compressor it keeps working nonstop air dryer purging every 30sec so i replaced governor, air dryer, lines, fittings, check valves, safety valves, unloader valve, any recommendations could it be the compressor it self? there is no sings of oil been push!!
Thanks 😊 👍
What's the average useful life of the compressor? I want to have an approximate idea to know roughly, about when it's good to replace the compressor before it starts having any significant problems. On average at what mileage most trucks require it done?
Great videos, learning a lot! :) Thanks!!
Hello can you please help i am looking for that big air inlet fitting that is on the right side the 90 degree one if you could tell me the part no for it i would appreciate it
Great videos. Do you know what causes the head gasket on the air compressor on a c15 Cat to go bad?
So I have a 96 Ford arrowmax with the 3176 cat I need to change the compressor is it the same steps to change it or does it need to be timed?
adeptape, working on the 3208 still.... Changing the air compressor, this one has a two groove pulley drive. I removed the castle nut that holds the pulley on, the problem is the pulley. What would I need to pull it? Would a 3 jaw gear pulley work? Thanks, Chris
I like your videos a lot can you make a video how to change oil cooler on C 13 caterpillar please.
I installed my new compressor but it makes a very bad noise until the tanks are filled. After that it works fine but while charging the noise does not disappear.
VERY NICE 100% THANKS
Hi, I have one question. My name is Ruben I have one international prostar 2009 with twins turbo. I change the bottom turbo because I see oil coming for that turbo, only for the back part of the turbo“ going for the exhaust” but then oil keeps going to the exhaust. When I remove the oil blade “for check the oil leve I flet a lot of air coming for the pipe “I have a bad air compressor is sending oil to my air tanks.
, if possible that is the cause for the oil going to my exhaust? Or a broken heat? Pliz help I’m new in that I have only 2 week with my truck :(
can a compressor blowing oil in the tanks prevent the trailer airbags and tanks too fill up
Hi boss I’ve been looking at your videos and I can see you have great knowledge I have a quick question I have a 2013 freightliner business class m2 with a Cummins isc 8.3 I’m experiencing a lot of blowby basically like a chu chu train but for some weird reason I’m not burning any oil my level always stays the same is it possible it’s because of a bad air Compressor ? Or a bad injector can it cause blowby? Because I know I have a bad injector acts up rarely but goes away after if any advice I would appreciate it thanks a million
If u don’t mind to contact me directly my email is bobbyboyrox@yahoo.com I would truly appreciate it
Do you have more info on swapping to single piston compressor on C15? My friends about to need to change his, when I sent him a link to your video where you talked about swapping to Bendix single piston compressor.
I swop to Bendix
Part number of the bendix one please
Can I send you a video of my dad's diesel truck that makes a ticking sound. I have already seen your video about ticking noises but it's nothing of what you said I don't think, it only ticks when it's cold...
If so how could I send you the video or maybe link you a CZcams link.
Could an air compressor pass oil to the coolant system on a 6nz?
hello: could you please give me some information about how to do this procedure on a 2013 Freightliner Coronado w/
DD15 engine? Your advice is much appreciated.
Thanks
Hello I have a 2008 pete 389 with this type of compressor I have put 6 of these on Mich CAT says this last one I installed has been updated November of 2017.Have you had to changed a lot of this type?If I have to change it again I will change to single cyl type.I have oil thru the whole air system.The motor has had an in frame overhaul in october of 2017.It also has had the emission junk removed from it and has a single turbo.I'm not sure what horsepower it has but pulls like a freight train.I pull doubles gravel trains gross about 162000 lbs.Any info about this compressor would be appreciated.
That's how you change the air compressor. Start with Beethoven Symphony No. 9 and end with William Tell Overture.
is there a video you can do on fixing an air compressor?
Can you tell me what an expansión chamber in a c15 acert is for? Thanks
My husband has 99 KW with 3406E cat. Trying to find where evaporator is located.
Good videos i have a question have 99 peter 3406e this morning truck wouldnt build air only 30 psi and would not go no more cant hear any air leaks at all susoension is deflated
Spray the discharge line from the air compressor to the air dryer with soapy water while its running.
Cant I replace the Head Gasket if I'm getting blow back? Pushing my Coolant out the bottle g
How is the easiest way to get the bottom bolt off with out taking the power steering pump off bc the bolt on bottom is no room to get to bc of the frame and ratchet with extension can't get on bolt
Hey where do you live I like your video and I have a 3406 E cat engine so I am wondering if you close to Toronto Ontario. Alex
Can you help me identify which Bendix compressor we can use for our Cat. We have a 2009 Cat C-15 Serial number SDP-13992. We are also on our 3rd compressor and I have tried getting in contact with Cat, Bendix and the dealer and no one has been able to help.
i like your vídeo good job
+pokemon cruz Thank you.
Hi, you can make a video using the cat software Et I would like to use it better ??
+jesus torres That isn't a bad idea. I could go over the features and how to perform the tests as tricks of it, ET.
Please can I have the part number for the update air compressor? I have a c15 Mxs twin turbo 2006
do you have a video on replacing power steering pump on a 3406e engine?
Hey Josh, is it possible for the air compressor to push oil into the cooling system of the truck? Got a C15 ACERT MXS and we cannot figure out how the oil keeps getting in the coolant. The oil cooler was replaced and didn't fix the problem. The coolant line on the air compressor is "sweating". It also seems as if there is some oil getting into the air dryer as well. We are thinking of replacing both components and doing yet another coolant flush. The cooling system isn't overpressurized do we don't believe the cylinder head on the engine is cracked. Any advice would be super helpful, thank you if you see this.
i have a c13 and suspect the same issue...
what did ya find out?
@@MrKatt68 Haven't gotten into the engine yet, still running the truck (it's not a full time truck at the moment) and just continuing to flush the coolant to keep the oil contamination down as much as we can.. I have however changed the air dryer and I also pulled the feed line off the compressor that goes to the dryer and it was dry inside, so I know the compressor isn't sending oil into the air system. My best guess as to what's going on is liner cavitation from too many years of improper coolant use. The truck had green coolant in it when they bought it and I suspect the previous owner did not test the coolant and add the SCA's, which in turned caused 'electrolysis' or liner cavitation, causing pressurized oil to inject itself right into the coolant surrounding the liners. The only piece of the puzzle that doesn't fit is there is no coolant at all in the oil. So I'm not sure if my theory is correct or not. I think we're going to find a used engine for it and swap it entirely.
What happens in the bottom of air compressor has a cap it pop out ( C15)
How can a bad compressor send air into the cooling system air bubbles are coming out in the coolant reservoir tank and why is this happening
Can you not replace internal seals in it?
How hard is it to upgrade my air dryer? I saw some guys mentioned AD-SP and AD-IP. I'm assuming they're spin-on cartridges. I would have to replace the whole unit? And which upgrade would fit in the same spot which is on the passenger side under the firewall/floorboard? Thanks for the reply👍
+Big R Phillips You know I've never done any sort of air dryer retrofit, just serviced them. Does anyone reading this have a suggestion?
Hi, you videos are a God sent. I have a 6nz c15 cat in a Frieghtliner century and I have to change the air compressor. My question is do I need to drain the oil if my oil supply line needs to be changed?
+Valentin Espinal No you don't, the oil supply line will have a little oil in them, but you don't have to drain the engine.
Adept Ape thanks I can’t wait to get it done I’m still shopping around for the bendex model I found one place that carries it in West Palm Beach but they want a $1000.00 core charge 😬😬
+Valentin Espinal Well the good thing is you get your core charge back when you turn in the old part. Just don't lose it.
Hello Adept Ape quick question do I have to remove the gear from the old compressor and can I use my old values after I replace all of the O rings. Or it will be a different setup going from a double piston to a single. Thanks for you time
Adept Ape hello there just to inform you I started my air compressor project today (worst day after thanksgiving to start mechanical work. Happy Thanksgiving by the way). I ran into a few snags removing the compressor my original one comes with a 3/4” spacer that goes on the compressor to meet up with the housing and most of the hoses we’re toast. There is one hose that I couldn’t remove that goes to the head of the motor. And all three nuts that hold compressor were all loss. That raised a question should I use lock tight and what is the torque specs for those nuts.
is there a trick to aligning an air compressor on a c15?
I have a 3406b caterpillar in my 96 peterbilt 379 and today i see a lot of air pressure in my radiator i think is the head gascket but my frind tellme is maybe the air compressor is that possible
I lost like two galons of antifreez
My trailer keep losing air really fast when it’s loaded heavy. Doesn’t matter what kinda trailer so I know it has to do something with the truck. Could it be my air compressor? Also I hear a lot of whistling
I'm having hell LOL!!!! Mine doesn't want to slide into place. I thought maybe that I need to clock the gear to mesh but that's not even working. Any ideas?
why didnt you change the spitter valve when serviceing the air dryer??
Is there any way to adapt from a C15 to a C13? The C13 air compressor is the worst ever seen. I’ve had mine replaced about 3 times.
Ok so my C7 only has two bolts holding it to the gear assembly ? Took both out and compressor seem tight as hell ? dead center of compressor has 2 small nuts there on the front of gear cover. Took it off and you can see nut holding gear on compressor shaft. Do I need to take that nut off ?
+Dale Brandt There is a bracket on the back of the compressor that holds it to the block. You have to remove the power steering pump and then it comes off. The compressor should come right out then.
So why is the compressor on the C7S and C9S timed?
Good way to get the drive gear off the compressor?
You happen to have the bendix air compressor #
How do you like working on those sdp engines?
I have a Cat C7 in a 2006 Freightliner M2 and I want to eliminate the air compressor because it is not performing any function now. If I remove the air compressor, will the power steering pump (ZF FN4 model) bolt on to the rear of the timing gear case, in place of the compressor? The ZF has a splined shaft which now engages a matching recess machined on the compressor crankshaft.
+George Phillip You would need a geared power steering pump. The pump is splined and wouldn't fit the gears on the front.
Thanks. I will look for a geared PS pump at a wreckers.
Random question when installing the oring style fitting on the air compressor is their any torque specs or just snug tight?? Or it's not possible to torque ?
+Johnathen Thompson There is a specific torque for the normal tighten down fittings, the ones with the locknut and swivel plate I've never seen a torque for them, but there probably is. I've never seen someone torque them though.
Adept Ape thank you very much :) I'm graduating UTI in 2 months and I'll be going to Quinn cat school for 2 years after that, like I said before I hope one day we cross paths in a shop!
And some since I'm not a mechanic how am I supposed to know about the c7 or a c9 or a twin piston or a throat Whopper mangrove
Tengo pregunta tengo un motor de series 60 que se le olvida cargar aire carga sus 120 psi pero no carga asta que llega a 60 psi o hasta que no tenga aire le cambié el gobernador y sigue igual y le eliminé el estornudo e igual
hey adept I have a green Slime and Water in my air dryer filter. Ive changed my air dryer cartridge 3x in 3 months. also have steam coming out of breather but no compression or bubbles in the system. Can an air compressor do this?
my coolant is red on cat c13
I know this Is three years later. But on my c13 I'm having the same Issue and I'm thinking it's the air compressor. 🤔 what did yours end up being?