| Author |
Message |
wesitarz
Samba Member
Joined: August 20, 2012
Posts: 1491
Location: Victoria,B.C.Canada
|
 Posted: Wed Sep 08, 2021 3:51 pm Post subject: Re: Ford front heater valve. |
 |
|
| That valve is $60 + tax (CAN) at NAPA. I put a ball valve in the hot heater line for summer hot foot. I'll keep it in mind though. |
|
| Back to top |
|
 |
djkeev
Samba Moderator
Joined: September 30, 2007
Posts: 32625
Location: Reading Pennsylvania
|
|
| Back to top |
|
|
djkeev
Samba Moderator
Joined: September 30, 2007
Posts: 32625
Location: Reading Pennsylvania
|
|
| Back to top |
|
|
djkeev
Samba Moderator
Joined: September 30, 2007
Posts: 32625
Location: Reading Pennsylvania
|
| Posted: Fri Sep 10, 2021 2:39 pm Post subject: Re: Ford front heater valve. |
|
|
Here is my 4seasons 74827 looking into the exit port fully closed
Looking into the entry port partially open. The funny slot it what water flows through on the tiniest partially open position. It eventually opens into a full hole.
Here is the old 74827 in the vise having the tabs bent up to disassemble it......
Once the tabs are bent up the control assembly lifts right off.
The interior rotating drum comes with it for the control lever is fastened to the drum with a rivet.
Notice the bigger rubber gasket sealing the assembly onto the body.
This is the fully closed side of the drum ...... it actually takes more than 180° of the drum leaving the open position with maybe 160° or so to pass water through the valve in a straight line.
The bottom of the drum rotates in the recess in the bottom of the valve housing.
What I found curious is that only the Exit port has a gasket to seal water flow.
When in the off position water is free to enter the valve but not exit.
Here is the entry port ..... no gasket ......
And the exit port, notice the gasket fit at the port......
The removed gasket, formed to fit into the exit port and concave to fit the valves round body.....
The disassembled valve with flow direction noted ......
So, why does warm coolant enter the heater core when installed wrong and completely turned off?
My theory........
If PROPERLY installed
The coolant enters the rotating control drum and the water pressure, such as it is, is inside the drum and pushing the concave surface of the closed drum ever tighter against the seal.
I'm sure the seal softens and becomes more pliable when warm?
If installed INCORRECTLY
The coolant flow remains outside of the valve. The water pressure pushing against the closed convex side of the drum is pushing the drum away from the warm seal.
Not much...... just enough to bleed some hot coolant through.
That's my educated guess.......
Anyone have a better idea?
Dave
_________________
Stop Dead Photo Links how to post photos
Ghia
http://www.thesamba.com/vw/forum/viewtopic.php?t=392473
Vanagon
http://www.thesamba.com/vw/forum/viewtopic.php?p=6315537#6315537
Beetle
https://www.thesamba.com/vw/forum/viewtopic.php?t=482968&highlight=74+super+vert |
|
| Back to top |
|
|
Wildthings
Samba Member
Joined: March 13, 2005
Posts: 50348
|
| Posted: Fri Sep 10, 2021 2:49 pm Post subject: Re: Ford front heater valve. |
|
|
| djkeev wrote: |
Here is my 4seasons 74827 looking into the exit port fully closed
....
Anyone have a better idea?
Dave |
I agree, that being what I said using a lot fewer words in an earlier post. |
|
| Back to top |
|
|
djkeev
Samba Moderator
Joined: September 30, 2007
Posts: 32625
Location: Reading Pennsylvania
|
| Posted: Fri Sep 10, 2021 3:03 pm Post subject: Re: Ford front heater valve. |
|
|
| Wildthings wrote: |
| djkeev wrote: |
Here is my 4seasons 74827 looking into the exit port fully closed
....
Anyone have a better idea?
Dave |
I agree, that being what I said using a lot fewer words in an earlier post. |
But you didn't have pictures!!
Coincidently, my 86 has the 74627 valve installed and it was never a problem with bleeding until this Summer when my Brother called saying that he could NOT turn off the heater fully!
I am guessing that the cable shifted or the valve went bad.
I had installed TK's inline valve on that unit and told him how to turn off the heat.
The 74627 is plastic and flows in the same direction as the metal 74827.
I mounted the 74627 above the spare tire with the control cable coming down to it, thus the coolant flow direction is correct.
If I had mounted the my metal 74827 above the spare tire, the flow direction would also be correct.
I changed things at the last minute and mounted my metal 74827 in the Van just after the hose enters through the hump.
I didn't give the arrow on the valve a thought.......
As a result of the relocation the control cable approach direction mandated the valve be flipped end for end and created my reverse flow bleed problem.
Moral of the story, check the flow arrow on the valve as you install it.
Choose the proper valve ........
74627 & 74827 for mounting in the factory location above the spare tire.
74628 & 74828 for mounting inside the passenger area.
Dave
_________________
Stop Dead Photo Links how to post photos
Ghia
http://www.thesamba.com/vw/forum/viewtopic.php?t=392473
Vanagon
http://www.thesamba.com/vw/forum/viewtopic.php?p=6315537#6315537
Beetle
https://www.thesamba.com/vw/forum/viewtopic.php?t=482968&highlight=74+super+vert |
|
| Back to top |
|
|
djkeev
Samba Moderator
Joined: September 30, 2007
Posts: 32625
Location: Reading Pennsylvania
|
|
| Back to top |
|
|
therastavan
Samba Member
Joined: July 30, 2020
Posts: 81
Location: California
|
| Posted: Tue Mar 07, 2023 7:58 pm Post subject: Re: Ford front heater valve. |
|
|
| So what is the final consensus on aftermarket Ford etc valves? Which is the best and do they all need modifications of the cable wire? |
|
| Back to top |
|
|
Wildthings
Samba Member
Joined: March 13, 2005
Posts: 50348
|
| Posted: Tue Mar 07, 2023 9:15 pm Post subject: Re: Ford front heater valve. |
|
|
| The plastic valves are pretty touchy as far as adjusting the heat goes, can't say how the metal ones compare. |
|
| Back to top |
|
|
vanis13
Samba Member
Joined: August 15, 2010
Posts: 3098
Location: ABQ NM USA.... Except when not
|
|
| Back to top |
|
|
michaelasnider
Samba Member
Joined: September 27, 2013
Posts: 369
Location: East Kootenays, Canada
|
| Posted: Wed Mar 08, 2023 7:19 am Post subject: Re: Ford front heater valve. |
|
|
| therastavan wrote: |
| So what is the final consensus on aftermarket Ford etc valves? Which is the best and do they all need modifications of the cable wire? |
I put in the 75627 in May of last year and have had no issues since. |
|
| Back to top |
|
|
therastavan
Samba Member
Joined: July 30, 2020
Posts: 81
Location: California
|
| Posted: Wed Mar 08, 2023 3:44 pm Post subject: Re: Ford front heater valve. |
|
|
| michaelasnider wrote: |
| therastavan wrote: |
| So what is the final consensus on aftermarket Ford etc valves? Which is the best and do they all need modifications of the cable wire? |
I put in the 75627 in May of last year and have had no issues since. |
Did you have to make any modifications to the original cable etc? |
|
| Back to top |
|
|
therastavan
Samba Member
Joined: July 30, 2020
Posts: 81
Location: California
|
| Posted: Tue Mar 21, 2023 5:03 pm Post subject: Re: Ford front heater valve. |
|
|
| I just got the 74627 valve and it is MASSIVE! My question is, how do you use the stock cable on it because there is no hole like in the OEM heater valve where the cable just slips into. Also, the arm is much much stiffer than the original arm. |
|
| Back to top |
|
|
DanHoug
Samba Member
Joined: December 05, 2016
Posts: 4789
Location: Bemidji, MN
|
| Posted: Tue Mar 21, 2023 5:19 pm Post subject: Re: Ford front heater valve. |
|
|
| Wildthings wrote: |
| The plastic valves are pretty touchy as far as adjusting the heat goes, can't say how the metal ones compare. |
i put in a high temp ball valve in my 87 to eliminate the chance of a leaking OEM valve but to also increase heater core flow at wide open, which it did. it's mounted to the left of the glove box in the heater hoses and it too is touchy as to position and coolant flow. my co-pilot constantly fiddled with it as we went from low to high altitude on our AZ trip but me thinks the same would be said for any manual heat control as the exterior temps varied.
fortunately, it's an easy reach for the passenger and i have freakishly long arms and can swing it from the drivers seat with a slight forward lean.
_________________
-dan
60% of what you find on the internet is wrong, including this post.
'87 Westy & '89 Westy both 2.1 4spd
Past projects can be found at--
www.thefixitworkshop.com |
|
| Back to top |
|
|
|
