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Topic: dash AC fixing and Cummins tune up miles ?s (Read 498 times) previous topic - next topic

dash AC fixing and Cummins tune up miles ?s

On a older coach 95 to 2000 is it normal for them to have a broke non working dash AC?

What would it cost to replace the compressor to get one back working do they still make and sell all the parts for this.?

At what amount of miles should the Cummins motor go in for a valve tune up? I read one site saying 120.000 and another saying 135.000

Thanks

Re: dash AC fixing and Cummins tune up miles ?s

Reply #1 –
When we were shopping for our coach alot of the ads stated "needs charge",this is a way for the seller to tell you it don't need
much but in reality it does.Also some people never use their dash air so their idea is don't spend money to fix it.Not sure about
prices but parts still availible.

The mileage for the valve checking can easily be looked up,on the mechanical 8.3 cummins this should not take more than 2
hours even if the valves need adjustment.We bought our coach from the original owner with 208k miles, I checked valve
clearence and not a one needed adjustment.Not sure when previous adjustment was.

Not sure when Foretravel went to R134 but my 96 has R134,R12 would be a problem,hope this helps.
96 U270 BUILD 4810
85 380SL
Drummonds TN.

Re: dash AC fixing and Cummins tune up miles ?s

Reply #2 –
The dash air conditioner on our 1995 U320 still works properly. That is, it blows cold air, but it's relatively ineffective for cooling such a large vehicle on a hot day. On warm days it's adequate, but when it's really hot we also run the generator and a roof air unit.

The best place to ask for air conditioning information is at a dedicated A/C forum. A very good source of information is the forum at Automotive Air Conditioning Bulletin Board • View forum - A/C Questions and... I have received help in the past from one of their members who posts as "Nacho." Another good forum is Automotive Air Conditioning Information Forum - Index page


David and Carolyn Osborn
1995 U320C SE 40' Build 4726 Feb 1995
FMCA 147762
Motorcade 17186

Re: dash AC fixing and Cummins tune up miles ?s

Reply #3 –
The dash air on my 295 has not worked since we bought it in 05. As far as compressor and clutch, dryer, pressure switches are avaliable at most truck parts stores as well as Napa I would imagine. I just run the generator and roof air.
Bruce, Linda, and Macy
Zoey RIP 1/20/19
1999 U295 40' build #5400
2017 silver Jeep Wrangler, 1260 watts of solar on top
Moving around the country

Re: dash AC fixing and Cummins tune up miles ?s

Reply #4 –
Just went thru my 95 ..... New compressor, dryer and expansion valve.
Total parts from NAPA about $300.
Bought a 30 lb bottle of 134A online for about $100.

My 95 came with 134A
Justin & Cathy Byrd
1995 U280 "Old Faithful"
36' Build #4673
C8.3 Cummins
Allison MD3060R 6 speed - retarder
Powertech 10KW  4cyl Kubota
 

Re: dash AC fixing and Cummins tune up miles ?s

Reply #5 –
Quote from: DigitalEd –
On a older coach 95 to 2000 is it normal for them to have a broke non working dash AC?

What would it cost to replace the compressor to get one back working do they still make and sell all the parts for this.?

At what amount of miles should the Cummins motor go in for a valve tune up? I read one site saying 120.000 and another saying 135.000

Thanks

1.  Not all but not unusual to need some kind of work.  At best ours won't keep up in Texas heat so we run the generator and overhead air units.

2. If you do the work your self a compressor, dryer, expansion valve, and Freon will cost about $400-450.  That is not taking into account for any electrical problems like high & low pressure cut out switches, condenser and or evaporator fan motor, flushing supplies, and misc. items that you will need like gages and vacuum pump.

3. If it was me (on a previously owned coach) I would run the valves no matter what the miles so I would have a base line to go by.  It is all to easy to do and cost is minimal (~$35 for the valve cover gasket). If you have ever run the valves on an old VW you can do it on an Cummins. We have seen several with a valve too tight with just 50,000 miles.

Pamela & Mike
Pamela & Mike 97 U 320

"It's not what happens to you, but how you react to it that matters."