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Topic: dash air and heater knob. (Read 463 times) previous topic - next topic

dash air and heater knob.

I was having issues with the dash air conditioner this summer and just got around to looking for answers with it.
The air was working "sorta" and I added 134 to the unit. The fan belt wheel for the air conditioner was not catching and spinning until I added the 134. Then it caught and was ok for a few hours. Then it started spinning again and the air was not cold. Taking it to a shop they claimed the unit (pictured) was the issue and should be replaced. Is this true...cause I do not know what the unit was he was talking about. Any answers what I am looking at in the picture?? If this is the case, is it DYI friendly to replace??

Also the rotating knob for the heat/cold is VERY hard to turn and seems to be sticking. I am thinking that cable lube (used in my harley on the clutch cable) would do the trick but want to be sure... any suggestions?
Peter    Alberta Canada
'98 U320 40'  Build 5359 M11 450 HP, Aqua hot, Blu Ox

Re: dash air and heater knob.

Reply #1 –
That is the A/C filter drier. If it is leaking then they are correct however if it isn't leaking it won't solve the problem of losing refrigerant.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: dash air and heater knob.

Reply #2 –
Is the air conditioner filter easy to change??
Peter    Alberta Canada
'98 U320 40'  Build 5359 M11 450 HP, Aqua hot, Blu Ox

Re: dash air and heater knob.

Reply #3 –
I have changed one before, fairly easy. Once that is done the system will need to vacuumed with a vacuum pump. 
Peter and Frieda Morin
1999 36ft. U320 Foretravel
Build # 5436
1998 Suzuki Sidekick Sport

Re: dash air and heater knob.

Reply #4 –
Raise the dash lid and you will see a nut on the back side of the temp control knob. While looking at the cable rotate the knob left and right.. you could put a bit of lube on the extended cable and work it back and forth may help unless there is a catch farther up the cable. Ive never tried getting lube farther up into a control cable but after what I described it may free up.
Dub McBride 1996 270

Re: dash air and heater knob.

Reply #5 –
Those driers can corrode on the top surface.  A leak there can be very difficult to detect.
Regards,
Brett

'99 42' Foretravel Xtreme
'14 Brown Motorsports Stacker
'05 Chevy SSR
'02 BMW R1150R

Re: dash air and heater knob.

Reply #6 –
Would adding a can of r134a with dye be helpful in finding a leak?
40ft 1997 U320
 

Re: dash air and heater knob.

Reply #7 –
Quote from: DayDreamer –
Would adding a can of r134a with dye be helpful in finding a leak?
Sometimes. If it is a small leak it is hard to see. Some of the dyes are better than others. I use the uv dye and special glasses and uv flashlight. Even with this I have had to use my sniffer to find leaks. A good A/C shop has the gas sniffer and good dye.


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1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean