| Author |
Message |
RZAR
Samba Member
Joined: September 01, 2007
Posts: 725
|
 Posted: Sun Feb 24, 2008 7:26 am Post subject: Type 4 thermostat and flaps |
 |
|
Im putting together and rebuilt longblock for my 77 bus. I installed the themostat and cable, hooked it up to the flaps and tested it buy slowing heating it up. When the flaps open and close its real jerky. Is this normal? I lubed all the hinge and pivot points on the flaps and wheel.
Last edited by RZAR on Tue Feb 26, 2008 10:49 pm; edited 1 time in total |
|
| Back to top |
|
 |
2VWs1BMW
Samba Member
Joined: May 31, 2004
Posts: 346
Location: Newark, DE
|
| Posted: Sun Feb 24, 2008 8:39 am Post subject: |
|
|
You probably have some binding internal to the cooling tins. Disconnect the cable and move the flaps by hand.
_________________
- Brian -
'17 Alltrack
'99 ///M Coupe w/48k mi - Bimmerforums
'77 Westy w/156k mi |
|
| Back to top |
|
|
NUKETROOP
Samba Member
Joined: April 27, 2005
Posts: 204
Location: ALBUQUERQUE NM
|
| Posted: Sun Feb 24, 2008 8:56 am Post subject: |
|
|
He's right,
they should move smoothly. I used some Rem-Oil to lube the points you stated. Do you have the plastic bushings that sit in the fan shroud and hold the rod? Thats the first thing I'd look for. The picture only shows one but I have 2.
Then check to see if you wound the spring enough? I'm not sure how much you need to do it, someone help out.
You may need to take the fan shroud off and lube the linkages that connect the rod to the flap on the left side if you still can't get it smooth.
If that doesn't work, The linkage inside on the left is held together by spring clips. Those could be too tight, slightly open them with a flathead screwdriver..
_________________
Los Alamos Nat'l Labs weapons rock. Lawrence Livermore weapons SUCK!
IYA-ATOMIC-YAS
1977 Campmobile w/78 Engine(H-Lifters) |
|
| Back to top |
|
|
RZAR
Samba Member
Joined: September 01, 2007
Posts: 725
|
| Posted: Sun Feb 24, 2008 12:01 pm Post subject: |
|
|
| I do have everything that needs to be there. i lubed all the pivit points and the flaps move freely when the cable disconected. its just when the the themostat is expanding and contracting the flaps move the stop then move and stop. it does this opening and closeing. the flaps do close and open completely. |
|
| Back to top |
|
|
Smurf
Samba Member
Joined: January 20, 2004
Posts: 918
Location: Colmar, PA
|
| Posted: Sun Feb 24, 2008 6:51 pm Post subject: |
|
|
what would happen if you just leave the cable off? Won't the flaps just stay open the whole time? just curious
_________________
1962 Beetle
1977 Westfalia (Subaru Conversion)
"Traveling in a fried-out Kombi
On a hippie trail head full of zombie"
-Men at Work |
|
| Back to top |
|
|
IFBwax
Samba Member
Joined: April 05, 2005
Posts: 1325
Location: Beaverton, Oregon
|
| Posted: Sun Feb 24, 2008 6:57 pm Post subject: |
|
|
| Smurf wrote: |
| what would happen if you just leave the cable off? Won't the flaps just stay open the whole time? just curious |
If the spring is attached, yes. It should. However, the thermostat is important to prevent engine wear. It gets your engine to heat up faster rather than having the flaps perpetually open which will cause your engine to run colder longer which is bad.
_________________
Owner of: "The Party Pickle" (a 1979 2 Liter FI "Raby Camper Special" Sage Green Westy Campmobile) & "Charlie Brown" (a 1979 2 Liter FI "Rob Grant Rebuild" Agate Brown/Dakota Beige Station Wagon)
www.partypickle.blogspot.com |
|
| Back to top |
|
|
Tcash
Samba Member
Joined: July 20, 2011
Posts: 12843
Location: San Jose, California, USA
|
| Posted: Sat May 12, 2018 10:31 am Post subject: Re: Type 4 thermostat and flaps |
|
|
To link to this thread copy and paste
| Code: |
| [url=https://www.thesamba.com/vw/forum/viewtopic.php?p=8769526#8769526]Type 4 thermostat and flaps[/url] |
Type 4 thermostat and flaps
Note: The spring in the following pictures is a Failsafe. If the Thermostat cable should break, the spring will Open the cooling flaps.
| PLF-Blue wrote: |
To link to this thread
| Code: |
| [url=https://www.thesamba.com/vw/forum/viewtopic.php?p=7765988#7765988]Type IV (4) Cooling Flaps Closed n Open[/url] |
Warning, crappy pics ahead....
This is correct, yes?
Tab pushed forward towards front of vehicle = flaps closed?
Tab is up, pulled all the way back towards the rear of the vehicle = flaps open?
added tcash
Link
|
Last edited by Tcash on Fri Jun 29, 2018 10:30 am; edited 1 time in total |
|
| Back to top |
|
|
SGKent 
Samba Member
Joined: October 30, 2007
Posts: 42989
Location: at the beach in Northern Wokistan
|
| Posted: Sat May 12, 2018 11:24 am Post subject: Re: Type 4 thermostat and flaps |
|
|
the question might be how you heated it. Although it is fairly smooth in operation, that does not mean your heat source created linear expansion inside the bellows.
_________________
 Canned Water - the new California approved parts cleaner (except in a drought in which case rub it with sand).
George Carlin:
"Most people don't know what they're doing, and a lot of them are really good at it."
Skills@EuroCarsPlus:
"never time to do it right but always time to do it twice"
1971 deluxe (sold)
1977 deluxe |
|
| Back to top |
|
|
hazetguy
Samba Member
Joined: April 06, 2001
Posts: 10807
Location: the past
|
| Posted: Sun May 13, 2018 9:55 am Post subject: Re: Type 4 thermostat and flaps |
|
|
| SGKent wrote: |
| the question might be how you heated it. Although it is fairly smooth in operation, that does not mean your heat source created linear expansion inside the bellows. |
you did see that this thread is a decade old, the original poster and one other haven't logged in in about a year, one poster in about 9 years. i know you weren't the one who dredged this up for no reason, just sayin. |
|
| Back to top |
|
|
Wasted youth
Samba Member
Joined: July 06, 2012
Posts: 5175
Location: California's Hot and Smoggy Central Valley
|
| Posted: Sun May 13, 2018 4:02 pm Post subject: Re: Type 4 thermostat and flaps |
|
|
Old thread, yes. But relevant.
My question: What will happen when the lube dries up? Probably better to apply fine craftsmanship so the moving parts move freely on their own accord without lubrication. |
|
| Back to top |
|
|
SGKent
Samba Member
Joined: October 30, 2007
Posts: 42989
Location: at the beach in Northern Wokistan
|
| Posted: Sun May 13, 2018 6:23 pm Post subject: Re: Type 4 thermostat and flaps |
|
|
| hazetguy wrote: |
| SGKent wrote: |
| the question might be how you heated it. Although it is fairly smooth in operation, that does not mean your heat source created linear expansion inside the bellows. |
you did see that this thread is a decade old, the original poster and one other haven't logged in in about a year, one poster in about 9 years. i know you weren't the one who dredged this up for no reason, just sayin. |
Missed that - thanks Hazetguy
_________________
Canned Water - the new California approved parts cleaner (except in a drought in which case rub it with sand).
George Carlin:
"Most people don't know what they're doing, and a lot of them are really good at it."
Skills@EuroCarsPlus:
"never time to do it right but always time to do it twice"
1971 deluxe (sold)
1977 deluxe |
|
| Back to top |
|
|
Hoody
Samba Member
Joined: November 28, 2007
Posts: 1948
|
| Posted: Sun May 13, 2018 7:10 pm Post subject: Re: Type 4 thermostat and flaps |
|
|
| It’s really nice that Tcash takes the time to post all of these past threads, stickys, and trouble shooting diagrams. I can’t be bothered to post pics of my extremely unobtanium parts when I decide to let them go. Thank GOD he hasn’t poached any of my pics of them.’Oh wait....I don’t have any. Sorry Jon....I had to bust your balls. And BTW the spare tire cover you sold me 5 years ago just got unwrapped. With some love it is dead tits perfect! Thanks Jon! |
|
| Back to top |
|
|
poundman
Samba Member
Joined: April 05, 2024
Posts: 470
Location: Sugar Land, Texas
|
| Posted: Tue May 27, 2025 12:22 pm Post subject: Re: Type 4 thermostat and flaps |
|
|
Where can I purchase all these components. Mine are gone.
_________________
-----------------------------------------
Restoring a 1972 Bay Window Bus that has not be registered for the road since 1981.
Sugar Land, Texas |
|
| Back to top |
|
|
Wildthings
Samba Member
Joined: March 13, 2005
Posts: 52763
|
| Posted: Tue May 27, 2025 1:49 pm Post subject: Re: Type 4 thermostat and flaps |
|
|
| poundman wrote: |
Where can I purchase all these components. Mine are gone.
|
You must have part #31 and something needs to seal the hole where bolt #44 used to go. The rest are not particularly necessary in Texas if you aren't driving it during the winter months. |
|
| Back to top |
|
|
poundman
Samba Member
Joined: April 05, 2024
Posts: 470
Location: Sugar Land, Texas
|
| Posted: Tue May 27, 2025 3:27 pm Post subject: Re: Type 4 thermostat and flaps |
|
|
| Wildthings wrote: |
| poundman wrote: |
Where can I purchase all these components. Mine are gone.
|
You must have part #31 and something needs to seal the hole where bolt #44 used to go. The rest are not particularly necessary in Texas if you aren't driving it during the winter months. |
Is #31 just an engine tin? Or is it a flap ?
_________________
-----------------------------------------
Restoring a 1972 Bay Window Bus that has not be registered for the road since 1981.
Sugar Land, Texas |
|
| Back to top |
|
|
aeromech
Samba Member
Joined: January 24, 2006
Posts: 17784
Location: San Diego, California
|
| Posted: Tue May 27, 2025 3:35 pm Post subject: Re: Type 4 thermostat and flaps |
|
|
Available through
Awesome Powdercoat
_________________
Lead Mechanic: San Diego Air and Space Museum
Licensed Airframe and Powerplant Mechanic
Licensed Pilot (Single engine Land)
Boeing 727,737-200-300-400,757,767
Airbus A319,320,321
DC9/MD80
BAe146
Fokker F28/F100
VW type 1 1962,63,65,69,72
VW Type 2 1971 (3 ea.) 1978, 1969
VW Jetta
VW Passat
Capable of leaping tall buildings in a single bound |
|
| Back to top |
|
|
Jcolton
Samba Member
Joined: September 20, 2020
Posts: 15
Location: Los Angeles
|
| Posted: Tue May 27, 2025 9:17 pm Post subject: Re: Type 4 thermostat and flaps |
|
|
Busted Bus did me up right
I was missing everything as well and Joe sent me the whole set up looking like new
_________________
1979 Westy |
|
| Back to top |
|
|
Wildthings
Samba Member
Joined: March 13, 2005
Posts: 52763
|
| Posted: Tue May 27, 2025 10:48 pm Post subject: Re: Type 4 thermostat and flaps |
|
|
| poundman wrote: |
| Wildthings wrote: |
| poundman wrote: |
Where can I purchase all these components. Mine are gone.
|
You must have part #31 and something needs to seal the hole where bolt #44 used to go. The rest are not particularly necessary in Texas if you aren't driving it during the winter months. |
Is #31 just an engine tin? Or is it a flap ? |
It's the flap that directs air into the top of the oil cooler, it is 100% necessary, a lot of people just screw it to the tin it mates against when they remove the remainder of the flap setup.
I am a big fan of having a working thermostat system, but it's hardly necessary if you seldom drive below 70°F. |
|
| Back to top |
|
|
SGKent
Samba Member
Joined: October 30, 2007
Posts: 42989
Location: at the beach in Northern Wokistan
|
| Posted: Tue May 27, 2025 11:07 pm Post subject: Re: Type 4 thermostat and flaps |
|
|
Here is a drawing Colin (amskeptic) did. He was kind enough to share it with others to answer questions on how the flaps work because there is a lot of confusion about them. It is also why 3 is the hottest cylinder.
the cooling flap on the left side where the oil cooler is acts both as a flap and as a vane. It splits the air so part of it goes thru the oil cooler and part thru the cylinders. It is a must whether open or closed.
[/quote]
_________________
Canned Water - the new California approved parts cleaner (except in a drought in which case rub it with sand).
George Carlin:
"Most people don't know what they're doing, and a lot of them are really good at it."
Skills@EuroCarsPlus:
"never time to do it right but always time to do it twice"
1971 deluxe (sold)
1977 deluxe |
|
| Back to top |
|
|
|
