|
|
| Re: Thermal Expansion Valve 77' & 78"? [message #364882 is a reply to message #364880] |
Mon, 21 June 2021 21:25   |
Rick Staples
Messages: 126
Registered: May 2014
Location: Johnstown, Colorado, USA
Karma: -1
|
Senior Member |
|
|
FWIW...... Rock Auto recognizes the GM number 5910768, and crosses it to a 4 Seasons number 38652, which they sell for about $17 plus shipping. My only hesitancy is that the illustrations they provide show a superheat type expansion, with a temp sensor that screws into the back of the A/C compressor. ie: It has two (2) capillary tubes connected to the expansion valve. Doesn't look anything like my GMC, but maybe the newer coaches are different.
Take a look and see if it looks like it would fit your coach. Heck, for $17 I might try and make it work.
HTH,
Rick Staples
Rick Staples, '75 Eleganza, Johnstown, CO
"Advice is a dangerous gift, even from the Wise to the Wise, and all paths may run ill." -Tolkien
|
|
|
|
| [GMCnet] Re: Thermal Expansion Valve 77' & 78"? [message #364884 is a reply to message #364882] |
Mon, 21 June 2021 22:18 |
stu@97381.com, Emery
Messages: 232
Registered: June 2020
Karma: 2
|
Senior Member |
|
|
Don’t buy it, Rick. It won’t work.
I may have the correct part number in my files.
Emery Stora
> On Jun 21, 2021, at 8:26 PM, Richard H Staples wrote:
>
> FWIW...... Rock Auto recognizes the GM number 5910768, and crosses it to a 4 Seasons number 38652, which they sell for about $17 plus shipping. My
> only hesitancy is that the illustrations they provide show a superheat type expansion, with a temp sensor that screws into the back of the A/C
> compressor. ie: It has two (2) capillary tubes connected to the expansion valve. Doesn't look anything like my GMC, but maybe the newer coaches are
> different.
> Take a look and see if it looks like it would fit your coach. Heck, for $17 I might try and make it work.
>
> HTH,
> Rick Staples
> --
> Rick Staples, '75 Eleganza, Johnstown, CO
>
> "Advice is a dangerous gift, even from the Wise to the Wise, and all paths may run ill." -Tolkien
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
|
|
|
|
| Re: Thermal Expansion Valve 77' & 78"? [message #364922 is a reply to message #364882] |
Wed, 23 June 2021 09:45 |
RoadWarrior
Messages: 28
Registered: April 2017
Location: Arizona
Karma: 0
|
Junior Member |
|
|
|
I am pretty sure that part number was correct in the past. It was supplied by several manufacturer's some of whom supplied a adapter fitting for the output. The correct valve would have 5/16" Oring tube connections on the inlet and outlet. The outlet connection associated with that part number is now 13/32" (larger) so it won't fit. This seems to be another case of the Chinese considilating part number in manufacturing and then putting them in different labled boxes. I know the internet is awash with complaints about returning parts that "should fit" (I currently have two valves that I am currently returning). FYI: the 77' & 78's had a externally compensated valve so they need the extra tube (which works better). The earlier coaches used a internally compensated valve.
|
|
|
|
GMCforum
Search
Help
Register
Login
Home
