Cummins parts....

Oscarvan · 02-08-2019, 04:07 PM

I've heard of a few instances here where the AC compressor cratered and took out the belt on Berkshires with the 6.7 Cummins.

I carry a spare belt, but without the compressor that isn't much help. We have talked about getting a smaller belt to bypass the compressor, but no one seems to have the right size/numbers. I have found pictures of the engine with a pulley where the compressor sits.... Anyone know of a source where I could get a (used?) pulley AND bracket for not too much $$ ?

Plan would be to do an emergency repair where I pull the compressor, install the pulley and new belt, hang the compressor off to the side and then be able to get to a place where I can effect the permanent repair....

One assumption here is that the belt size is the same whether the compressor is on there or the pulley.... Once I get it I'll have to take a close look at that, and MAYBE even do a test run.

dan-nickie · 02-08-2019, 04:13 PM

Where is the compressor on that engine you have the picture of?

Oscarvan · 02-08-2019, 04:24 PM

It isn't, the picture is not of my engine.....

On our engines it is in place of the pulley that the arrow is pointing at. So I want to have the pulley with me to put on there when the compressor craters and run sans compressor until I can fix it.

This is an emergency plan....

Trying to find a cheap source for the bracket. Haven't talked to my Cummins dealer yet, but suspect it will not be cheap from him. Since I don't need it on there, I can settle for a used one.

raidernation · 02-08-2019, 04:44 PM

Can you run without a compressor ?

I assumed that the the compressor was required to provide compressed air for the braking system ?

wildcatter · 02-08-2019, 04:59 PM

Take a rope and run it around the pulleys that will be used if the AC compressor needs to be removed then take it to an auto parts store and get the right size, just make sure you go a little bigger to make sure it isn't to small, you will also need to make that no pulleys will be running backwards in that scenario, I have by passed AC compressors and air pumps (smog) on engines before until I could get the defective part replaced.

Oscarvan · 02-08-2019, 05:04 PM

Quote:

Originally Posted by raidernation

Can you run without a compressor ?

I assumed that the the compressor was required to provide compressed air for the braking system ?

I'm talking about the Air Conditioning compressor..... The air compressor is on the other side of the engine.

Oscarvan · 02-08-2019, 05:05 PM

Quote:

Originally Posted by wildcatter

Take a rope and run it around the pulleys that will be used if the AC compressor needs to be removed then take it to an auto parts store and get the right size, just make sure you go a little bigger to make sure it isn't to small, you will also need to make that no pulleys will be running backwards in that scenario, I have by passed AC compressors and air pumps (smog) on engines before until I could get the defective part replaced.

That is an option although I remember doing that on another motor when I did a modification and having to go back three times until I got the right size....

Iwannacamp · 02-08-2019, 05:30 PM

I don't know how hard it will be to change the bracket vs: changing the compressor.
A truck service/dealer should be able to supply a new compressor for $2-300 and you could mount without hooking the lines or wiring up if an emergency repair. Might still need a belt and would still leave you working on a hot engine.

Oscarvan · 02-08-2019, 08:38 PM

I have a belt and I'll let it cool.

I do like the idea of bringing a compressor... That way I KNOW it's the right dimensions. The clutch would not engage as it's not hooked up....

Hmmm.....

cudntherd · 02-08-2019, 08:49 PM

I am one that had the A/C Compressor seize up and cut the belt. The belt cut the wires to the Horton Fan controller and broke the bracket for the controller. I had the same idea of pulling the compressor, using a short a belt.
I drove about 50 miles from Lordsburg, NM to Wilcox, AZ to NAPA Auto parts and purchases a belt to fit a 5.9 without A/C and it was to long.
I ended up calling a Tow Truck and had our 2011 Berkshire towed 178 miles to Tucson FreightLiner.
We had not used the A/C for our trip from Fort Worth Texas.

270S · 02-08-2019, 08:51 PM

Quote:

Originally Posted by Iwannacamp

I don't know how hard it will be to change the bracket vs: changing the compressor.
A truck service/dealer should be able to supply a new compressor for $2-300 and you could mount without hooking the lines or wiring up if an emergency repair. Might still need a belt and would still leave you working on a hot engine.

Good Luck/Try. I just spent $1400 for my Honda AC compressor. Let's not get into a price war discussion. Most items taken to a reputable dealer for repairs will run $500-$1500 per event, even higher for real significant items - at least that's been my experience.

As an OEM, there are too many what ifs for major parts/components as spares. Do proper daily inspections and PM when traveling and one should probably be Ok, but if/when the unthinkable happens deal with it then the most expeditiously and cost effectively, then move on to enjoy the rest of your time. Trying to 'jury rig" will only make it worse.

Oscarvan · 02-08-2019, 09:10 PM

Quote:

Originally Posted by cudntherd

I am one that had the A/C Compressor seize up and cut the belt. The belt cut the wires to the Horton Fan controller and broke the bracket for the controller. I had the same idea of pulling the compressor, using a short a belt.
I drove about 50 miles from Lordsburg, NM to Wilcox, AZ to NAPA Auto parts and purchases a belt to fit a 5.9 without A/C and it was to long.
I ended up calling a Tow Truck and had our 2011 Berkshire towed 178 miles to Tucson FreightLiner.
We had not used the A/C for our trip from Fort Worth Texas.

Yeah, the belt cutting the fan controller is something that's hard to foresee. I mean, I can't carry everything.

You are, however, not the only compressor seizure I've heard of. Interesting that it seized without the clutch engaged... Thanks.

dan-nickie · 02-08-2019, 09:19 PM

My compressor froze up back in October. I heard the belt squealing and pulled over. I was able to carry on 100 miles Just by turning the AC off. I was fortunate the belt did not break. $1500 total repair at freightliner.

cudntherd · 02-08-2019, 09:40 PM

Oscarvan,
I doubt the idler pulley and possibly the bracket is a Cummins supplied part. When the our Berk was new the alternator was charging intermittent. I took the Berk to Cummins and was told I needed to take it to Freightliner. Cummins showed me the engine they supplied to Freightliner and it was bare. Freightliner installed a new alternator. The A/C compressor is an Allied Part, installed by Freightliner.

Oscarvan · 02-08-2019, 10:03 PM

Quote:

Originally Posted by cudntherd

Oscarvan,
I doubt the idler pulley and possibly the bracket is a Cummins supplied part. When the our Berk was new the alternator was charging intermittent. I took the Berk to Cummins and was told I needed to take it to Freightliner. Cummins showed me the engine they supplied to Freightliner and it was bare. Freightliner installed a new alternator. The A/C compressor is an Allied Part, installed by Freightliner.

That is very possible, and would explain why there's no mention of it on the Cummins Quickserve site.... Which means it should be on the DTNA site, except I can only look for my VIN which explains why it's not there either, because I need to look for the compressor.

When you google there's a plethora of pulleys for sale on the interwebs (sans bracket) but they may very well be Chrysler supplied as they are offered for the 6.7 in the RAM trucks.

Oscarvan · 02-08-2019, 10:03 PM

So did anyone take a picture of the compressor label?

And found it in DTNA, although this diagram and the shop manual shows it in two different locations, both different from where it is actually located.

I'm going to have to take a look at it, again, next time I'm under there.

And, this could very well be it..... Getting closer.

dave-g · 02-08-2019, 10:31 PM

I often thought of these-

http://www.jasonindustrial.com/pdf/A...lletin2014.pdf

I have used them on ac units, don't know if it would be go enough to drive far with.

Oscarvan · 02-08-2019, 10:37 PM

Quote:

Originally Posted by dave-g

I often thought of these-

http://www.jasonindustrial.com/pdf/A...lletin2014.pdf

I have used them on ac units, don't know if it would be go enough to drive far with.

On Amazon.... Never seen them. Like the idea, a lot. That would possibly work to bypass the compressor and leave it in place. With the tensioner it should be pretty easy to get it to the right length. Whether it has enough friction to push the water pump and the alternator is the question. Downloading the 12V load by running the generator and thus battery charger would keep the alternator load to a minimum. I'd have to call them and ask. I have a spare belt in the basement, will measure it's length.

https://www.amazon.com/Jason-Industr...cu+link+v+belt

Oscarvan · 02-08-2019, 10:40 PM

Lookie here..... https://www.amazon.com/Universal-Con...667+3579878-C1

Real company, not Shanghai.... https://uacparts.com/

Soooo, carry that and this disaster would be: Pull over, wait for it to cool, put temporary belt on, drive to repair facility, hand them the compressor and the belt. 3-4 hours time..... $700

Iwannacamp · 02-09-2019, 02:10 PM

Quote:

Originally Posted by Oscarvan

Lookie here..... https://www.amazon.com/Universal-Con...667+3579878-C1

Real company, not Shanghai.... https://uacparts.com/

Soooo, carry that and this disaster would be: Pull over, wait for it to cool, put temporary belt on, drive to repair facility, hand them the compressor and the belt. 3-4 hours time..... $700

I mentioned a price on a typical truck a/c compressor in an earlier post. I was in that business for 25 years(out for 13) and NEW compressors for trucks were cheap.. import cars? No The only problem would be identifing the right one.

You may also like: