Air Compressor oil question
#16
CF Veteran
Joined: Nov 2009
Posts: 8,172
Likes: 17
From: The Republic of TEXAS
Year: 1998
Model: Cherokee
Engine: 4.0L HO
"""""just make sure the system has the correct total amount of oil for your year. """""
Do that without making sure the crank/wobble plate end of the compressor is filled correctly and the life expectancy of the compressor is probably about 1/2 hour. About the same as running your engine without oil.
Many rebuilt compressors come with the dipstick and instructions.
Reading how to make the dipstick from a coat hanger is too hard and complicated for some people. Or is it they get a powerful feeling when they cause someone to ruin something?
What you had in there - the few drops - is not near enough.
You'll see in the diagrams the tiny bleed hole - it's to equalize pressure, not transfer oil. Or take one apart and see for yourself. At least look in your Factory Service Manual.
Do that without making sure the crank/wobble plate end of the compressor is filled correctly and the life expectancy of the compressor is probably about 1/2 hour. About the same as running your engine without oil.
Many rebuilt compressors come with the dipstick and instructions.
Reading how to make the dipstick from a coat hanger is too hard and complicated for some people. Or is it they get a powerful feeling when they cause someone to ruin something?
What you had in there - the few drops - is not near enough.
You'll see in the diagrams the tiny bleed hole - it's to equalize pressure, not transfer oil. Or take one apart and see for yourself. At least look in your Factory Service Manual.
Back to the OP....The '98 FSM says nothing about a dipstick for measuring compressor oil. When we overhauled our a/c 2 years ago, we precisely measured 8.1 ozs of oil (per '98 FSM) and added 1/2 of the oil to the accumulator/dryer and 1/2 to the new empty compressor. A 1/2 hour later the system was crankin' 34F at the center vents.....25 months later it's still at 34F. So much for life expectancy.
By all means, if u want, fashion a dipstick and place it in the appropriate place.
#18
Senior Member
Joined: Aug 2011
Posts: 760
Likes: 6
From: Landers, CA
Year: Several
Model: Cherokee
Engine: 4.0
Obviously spoken by someone that's never had one apart or looked at the assembly drawings on the net as suggested, or looked in the factory manual.
You were lucky - too much oil in the crankcase can damage it.
Same as not enough!
But first you say to just add the oil to the dryer, now you say you put some in the compressor! Why do you say one thing, but do another?
Why do you always insist on NOT doing things right or logical? It's very obvious you love to steer people wrong.
Talk about a dipstick!
You were lucky - too much oil in the crankcase can damage it.
Same as not enough!
But first you say to just add the oil to the dryer, now you say you put some in the compressor! Why do you say one thing, but do another?
Why do you always insist on NOT doing things right or logical? It's very obvious you love to steer people wrong.
Talk about a dipstick!
#19
CF Veteran
Joined: Nov 2009
Posts: 8,172
Likes: 17
From: The Republic of TEXAS
Year: 1998
Model: Cherokee
Engine: 4.0L HO
Starting with post #2 of this thread, I've repeatedly said add 1/2 of the correct total amount of oil to the dryer and 1/2 to the replacement compressor. Can't u read, rich?
#20
CF Veteran
Joined: Jan 2011
Posts: 1,635
Likes: 0
From: Virginia
Year: 1999
Model: Cherokee
Engine: 4.0
Ok I bought a Brand New A/C Compressor for my 99 cherokee. The instructions say the compressor has been prefilled with oil and NOT to drain oil from compressor but then also says to fill system with correct amount of oil?
Im also going to pick up a new accumulator drier from Napa theyy got it for $34.99 and also a new orifice tube liquid line at Napa that's $31.99
Will I need new orings? Or will the new accumulator drier and orifice tube liquid line come with new orings?
Also do I need to do a A/C flush? Old compessor DIDN'T burn out. Just had a leak around the clutch of the A/C Compressor.
Im also going to pick up a new accumulator drier from Napa theyy got it for $34.99 and also a new orifice tube liquid line at Napa that's $31.99
Will I need new orings? Or will the new accumulator drier and orifice tube liquid line come with new orings?
Also do I need to do a A/C flush? Old compessor DIDN'T burn out. Just had a leak around the clutch of the A/C Compressor.
#21
CF Veteran
Joined: Nov 2009
Posts: 8,172
Likes: 17
From: The Republic of TEXAS
Year: 1998
Model: Cherokee
Engine: 4.0L HO
Ok I bought a Brand New A/C Compressor for my 99 cherokee. The instructions say the compressor has been prefilled with oil and NOT to drain oil from compressor but then also says to fill system with correct amount of oil?
Im also going to pick up a new accumulator drier from Napa theyy got it for $34.99 and also a new orifice tube liquid line at Napa that's $31.99
Will I need new orings? Or will the new accumulator drier and orifice tube liquid line come with new orings?
Also do I need to do a A/C flush? Old compessor DIDN'T burn out. Just had a leak around the clutch of the A/C Compressor.
Im also going to pick up a new accumulator drier from Napa theyy got it for $34.99 and also a new orifice tube liquid line at Napa that's $31.99
Will I need new orings? Or will the new accumulator drier and orifice tube liquid line come with new orings?
Also do I need to do a A/C flush? Old compessor DIDN'T burn out. Just had a leak around the clutch of the A/C Compressor.
The problem with not flushing the system is.....how much old oil is left where, in the system. As stated in the FSM, too much oil in the system reduces cooling efficiency. When we did our a/c overhaul 6/10, we replaced everything but the evap and cond so we flushed both of those with a/c flush and blew them out with compressed air....that way the system starts out with zero oil and a precise measurement of 8.1 ozs of oil (for a '98 XJ) can be added via the accumulator and compressor. New o-rings came with the new compressor, accumulator, liquid line and rubber hose manifold. Our new compressor was tagged "shipped dry, no oil". Before installing the new compressor, we turned it upside down and a few drops of oil did drip out. I presume it was tested at the factory, then oil was drained before being shipped out to the store. FWIW, got the new compressor from O'reilly Auto Parts.
Last edited by djb383; 07-11-2012 at 04:19 PM.
#22
Senior Member
Joined: Aug 2011
Posts: 760
Likes: 6
From: Landers, CA
Year: Several
Model: Cherokee
Engine: 4.0
That's where you make a fool of yourself - AGAIN.
Some compressor's come filled, some not. Until the OP's last post there was no way to know if he was using the old one, a new filled one, or an new unfilled one.
Your's said it was empty, others are prefilled. Look at this thread!
Whether full or partly full the dipstick will tell you how much is in there - if any!
How else would you know without draining it?
Putting the recommended amount in the dryer does NOT insure the oil gets through the tiny vent hole - many compressors get ruined because it's ASSumed it does.
If it already had oil in the compressor it would be too much.
Poking a wire in the access plug is too hard or difficult?
If you don't know how much is in the compressor how do you know how much to add to achieve the total?
Why is it you always try to mislead everyone hoping to get them to ruin it? You must be one hellovfa sick person.
The true FSM'S show how to check the oil in the compressor, so does the internet if you can read.
Probing the little wire in it is far easier than draining it to see how much is in it. It's the same plug!
Try using at least a little logic rather than arguing and making a total fool of yourself.
You've already earned the reputation of leading people astray and arguing just for argument's sake. Makes us wonder if you have have ever even had a Jeep.
Please, no more PM'S LAUGHING AT HIM - he's sick! There seems to be 4 just like him.
Here's a picture of the dipstick and how to use it.
http://www.discountacparts.com/sande...rocedure_2.htm
Isn't it better to do it right just once than several times wrong?
An O ring kit is only about $2.00. Sometimes parts include them sometimes not. Can't hurt to have a spare.
Some compressor's come filled, some not. Until the OP's last post there was no way to know if he was using the old one, a new filled one, or an new unfilled one.
Your's said it was empty, others are prefilled. Look at this thread!
Whether full or partly full the dipstick will tell you how much is in there - if any!
How else would you know without draining it?
Putting the recommended amount in the dryer does NOT insure the oil gets through the tiny vent hole - many compressors get ruined because it's ASSumed it does.
If it already had oil in the compressor it would be too much.
Poking a wire in the access plug is too hard or difficult?
If you don't know how much is in the compressor how do you know how much to add to achieve the total?
Why is it you always try to mislead everyone hoping to get them to ruin it? You must be one hellovfa sick person.
The true FSM'S show how to check the oil in the compressor, so does the internet if you can read.
Probing the little wire in it is far easier than draining it to see how much is in it. It's the same plug!
Try using at least a little logic rather than arguing and making a total fool of yourself.
You've already earned the reputation of leading people astray and arguing just for argument's sake. Makes us wonder if you have have ever even had a Jeep.
Please, no more PM'S LAUGHING AT HIM - he's sick! There seems to be 4 just like him.
Here's a picture of the dipstick and how to use it.
http://www.discountacparts.com/sande...rocedure_2.htm
Isn't it better to do it right just once than several times wrong?
An O ring kit is only about $2.00. Sometimes parts include them sometimes not. Can't hurt to have a spare.
Last edited by rrich; 07-11-2012 at 06:03 PM.
#23
CF Veteran
Joined: Nov 2009
Posts: 8,172
Likes: 17
From: The Republic of TEXAS
Year: 1998
Model: Cherokee
Engine: 4.0L HO
Whatever dude. I'd post a pic of the compressor oil dipstick check method from our '98 FSM but guess what.....there isn't one. However, the FSM does state drain/measure oil from the compressor.
Last edited by djb383; 07-11-2012 at 06:37 PM.
#24
Senior Member
Joined: Aug 2011
Posts: 760
Likes: 6
From: Landers, CA
Year: Several
Model: Cherokee
Engine: 4.0
All of my FSM'S show it, including my '03 TJ Rubicon's.
There were 2 mfgr's of the compressors used on Jeeps - and most Dodge trucks. From the early Renix days to present. Mitsubishi and Sanden. Very similar, but slightly different - of course.
There are lots of official sites from them that show how to make/use the dipstick - and why.
You'd think they should know if anybody does.
And there are lots of parts and rebuild kits available - for cheap.
It's not a black art - actually very simple to rework them with standard tools, except the puller for the clutch - $20?
Look up yours by make and model number for the exact parts.
I've rebuilt quite a few - Mostly to use for on-board air - but some for AC. They take up much less space and the CFM is very close to a York - and it fits where space is limited.
Used Yorks are $100+ - these are usually more like $10.
The usual troubles -
Reed valves get a tiny piece of dirt in them - simply clean them - take off the back end and blow it out.
leaky seals - replace the seals both ends.
Clutches go bad - parts houses get a fortune - get them new wholesale from the internet - $25.
There were 2 mfgr's of the compressors used on Jeeps - and most Dodge trucks. From the early Renix days to present. Mitsubishi and Sanden. Very similar, but slightly different - of course.
There are lots of official sites from them that show how to make/use the dipstick - and why.
You'd think they should know if anybody does.
And there are lots of parts and rebuild kits available - for cheap.
It's not a black art - actually very simple to rework them with standard tools, except the puller for the clutch - $20?
Look up yours by make and model number for the exact parts.
I've rebuilt quite a few - Mostly to use for on-board air - but some for AC. They take up much less space and the CFM is very close to a York - and it fits where space is limited.
Used Yorks are $100+ - these are usually more like $10.
The usual troubles -
Reed valves get a tiny piece of dirt in them - simply clean them - take off the back end and blow it out.
leaky seals - replace the seals both ends.
Clutches go bad - parts houses get a fortune - get them new wholesale from the internet - $25.
#25
CF Veteran
Joined: Nov 2009
Posts: 8,172
Likes: 17
From: The Republic of TEXAS
Year: 1998
Model: Cherokee
Engine: 4.0L HO
rich.....help the OP out and post a pic of the compressor dipstick from your '99 factory Jeep Cherokee Service Manual. I would post a pic of the compressor dipstick and oil level from our '98 FSM, but there isn't a pic. It does say " It is important to have the correct amount of oil in the refrigerant system". Nowhere does it say a specific number of ounces of oil or a specific oil level in the compressor.
I wouldn't want to mislead the OP, since his XJ is a '99 and ours is a '98. I thought I stated in all of my posts that "one needed to check/verify a/c specs for their specific year model" or something to that effect. Identifying the correct amount of oil for the refrigerant system by year model is important, I'm sure. I believe I also stated that the way we did our a/c overhaul has worked very well for us for 2+ years now. If we didn't do our repairs the way u approve/the way u would do it.....then up yours and the horse u rode in on.
The OP asked a ?, I responded with info from the FSM, info we Googled covering a/c repair, couple of books from the local public library, etc., etc. I guess I should have had The OP (and everyone else) sign a disclaimer....nobody wants a letter from the 1-800 law firm of Dewey, Cheatum and Howe.
......and don't flatter yourself thinking I would send u a PM.....it's pretty easy to spot a little troll that hides behind a big keyboard......Oh, and u won't be getting a Xmas card either.
I wouldn't want to mislead the OP, since his XJ is a '99 and ours is a '98. I thought I stated in all of my posts that "one needed to check/verify a/c specs for their specific year model" or something to that effect. Identifying the correct amount of oil for the refrigerant system by year model is important, I'm sure. I believe I also stated that the way we did our a/c overhaul has worked very well for us for 2+ years now. If we didn't do our repairs the way u approve/the way u would do it.....then up yours and the horse u rode in on.
The OP asked a ?, I responded with info from the FSM, info we Googled covering a/c repair, couple of books from the local public library, etc., etc. I guess I should have had The OP (and everyone else) sign a disclaimer....nobody wants a letter from the 1-800 law firm of Dewey, Cheatum and Howe.
......and don't flatter yourself thinking I would send u a PM.....it's pretty easy to spot a little troll that hides behind a big keyboard......Oh, and u won't be getting a Xmas card either.
#26
Senior Member
Joined: Aug 2011
Posts: 760
Likes: 6
From: Landers, CA
Year: Several
Model: Cherokee
Engine: 4.0
You still don't get it!
The mfgr's of the compressors show to do it the easy way - with a dipstick. It only takes seconds to use it. It can be done on the bench or installed in the vehicle. No draining and refilling.
And it leaves no doubt or guessing about how much is the correct amount - whether new filled, new empty or used.
And it only takes a few seconds to do it.
Specs on how much to put in the compressor vs how much in the rest are not easy to find. But checking with the dipstick removes all doubt.
It worked for yours - good.
There are lots of websites that show the dipstick, how to make it, how to use it - not just the one I cited. AC books often show it too.
Seconds vs 15-20 minutes.
But too complicated for you?
You first said to just add all the oil to the dryer, yet you didn't do yours that way. What you say is not what you do! What do they call people like that? (- besides politicians.)
Makes us wonder how you check your engine oil - drain, measure, and refill? Tranny and diff fluids too? Radiator? This I gotta see!
What do you think dipsticks are for?
The PM's I've been getting are all laughing at you!
But if anyone chooses to do it the hard way - your way - and take a chance on destroying their compressor it's OK! The economy needs the business!
You argue for argument's sake, not logic or good sense. It's very obvious from all your posts - not just on this subject but every time you post your stupidity.
Do what you want!
The mfgr's of the compressors show to do it the easy way - with a dipstick. It only takes seconds to use it. It can be done on the bench or installed in the vehicle. No draining and refilling.
And it leaves no doubt or guessing about how much is the correct amount - whether new filled, new empty or used.
And it only takes a few seconds to do it.
Specs on how much to put in the compressor vs how much in the rest are not easy to find. But checking with the dipstick removes all doubt.
It worked for yours - good.
There are lots of websites that show the dipstick, how to make it, how to use it - not just the one I cited. AC books often show it too.
Seconds vs 15-20 minutes.
But too complicated for you?
You first said to just add all the oil to the dryer, yet you didn't do yours that way. What you say is not what you do! What do they call people like that? (- besides politicians.)
Makes us wonder how you check your engine oil - drain, measure, and refill? Tranny and diff fluids too? Radiator? This I gotta see!
What do you think dipsticks are for?
The PM's I've been getting are all laughing at you!
But if anyone chooses to do it the hard way - your way - and take a chance on destroying their compressor it's OK! The economy needs the business!
You argue for argument's sake, not logic or good sense. It's very obvious from all your posts - not just on this subject but every time you post your stupidity.
Do what you want!
#28
CF Veteran
Joined: Nov 2009
Posts: 8,172
Likes: 17
From: The Republic of TEXAS
Year: 1998
Model: Cherokee
Engine: 4.0L HO
#29
Senior Member
Joined: Aug 2011
Posts: 760
Likes: 6
From: Landers, CA
Year: Several
Model: Cherokee
Engine: 4.0
"""""The oil circulates throughout the entire system....just make sure the system has the correct total amount of oil for your year. """""
That ASSumes you KNOW how much oil is already in the crankcase a and can add ONLY the amount needed to bring it up to the total.
If you DON'T KNOW how much is already in it, how can you do that? Probing with the simple dipstick tells you!
Try using a little logic! It doesn't take much, so with professional help you probably can do it.
It's not possible to cope with someone that only wants to argue and wants to mislead people. You are SICK!
In future I won't even to bother responding to you or your babble. If someone wants to follow your bad advice so be it.
Someday someone you screwed will catch up to you!
Texas has it's own brand of justice!
That ASSumes you KNOW how much oil is already in the crankcase a and can add ONLY the amount needed to bring it up to the total.
If you DON'T KNOW how much is already in it, how can you do that? Probing with the simple dipstick tells you!
Try using a little logic! It doesn't take much, so with professional help you probably can do it.
It's not possible to cope with someone that only wants to argue and wants to mislead people. You are SICK!
In future I won't even to bother responding to you or your babble. If someone wants to follow your bad advice so be it.
Someday someone you screwed will catch up to you!
Texas has it's own brand of justice!
Last edited by rrich; 07-13-2012 at 10:57 AM.
#30
CF Veteran
Joined: Nov 2009
Posts: 8,172
Likes: 17
From: The Republic of TEXAS
Year: 1998
Model: Cherokee
Engine: 4.0L HO
What?......no dipstick pics from your '99 FSM to help out the OP and no proof that I said "just add oil to the dryer"......and a snide remark about the great state I live in.....come on, man...........trollin', trollin', trollin', rich is just a trollin'.......trollin'.
Last edited by djb383; 07-13-2012 at 06:28 PM.
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