Hello! Log in or Register   |  Help  |  Donate  |  Buy Shirts  See all banner ads | Advertise on TheSamba.com  
TheSamba.com
 
Heating FAQs - BN4 Gas heaters & heating related topics
Page: Previous  1, 2, 3, 4, 5  Next
Forum Index -> Thing/Type 181 Share: Facebook Twitter
Reply to topic
Print View
Quick sort: Show newest posts on top | Show oldest posts on top View previous topic :: View next topic  
Author Message
BKellogg
Samba Member


Joined: November 21, 2011
Posts: 7
Location: Terrebonne, OR
BKellogg is offline 

PostPosted: Sat Dec 03, 2011 3:04 pm    Post subject: Reply with quote

I see in the pics that there is a "combustion chamber" next to the BN4. Mine doesn't have one of these.... What is it's purpose? The heater works without it and there is a bracket there for one but I cannot find ANYTHING written about it. Please help!!!
Brian
Back to top
View user's profile Send private message Classifieds Feedback
[email protected]
Samba Member


Joined: February 21, 2003
Posts: 749
Location: Clifton Park NY Saratoga County
mpb181@aol.com is offline 

PostPosted: Sat Dec 03, 2011 3:08 pm    Post subject: Reply with quote

It is un related to the heater It is part of the gas Emissions System I have a box of these at my shop
_________________
Michael Basso
http://www.thingparts.com
New and Used VW Thing Parts Free advice
CALL 518 630 0173
Back to top
View user's profile Send private message Send e-mail Visit poster's website Facebook Gallery Classifieds Feedback
BKellogg
Samba Member


Joined: November 21, 2011
Posts: 7
Location: Terrebonne, OR
BKellogg is offline 

PostPosted: Sat Dec 03, 2011 4:00 pm    Post subject: Reply with quote

[email protected] wrote:
It is un related to the heater It is part of the gas Emissions System I have a box of these at my shop


So is this something I need to have? This is my first Thing and it gets a little confusing at times as there isn't much in the way of manuals detailing stuff like this... Thanks for answering!!!
Brian
Back to top
View user's profile Send private message Classifieds Feedback
[email protected]
Samba Member


Joined: February 21, 2003
Posts: 749
Location: Clifton Park NY Saratoga County
mpb181@aol.com is offline 

PostPosted: Sat Dec 03, 2011 4:28 pm    Post subject: Reply with quote

I would recommend you get A parts manual I think there is a downloadable 1 in technical
_________________
Michael Basso
http://www.thingparts.com
New and Used VW Thing Parts Free advice
CALL 518 630 0173
Back to top
View user's profile Send private message Send e-mail Visit poster's website Facebook Gallery Classifieds Feedback
Captain Spalding
Samba Member


Joined: February 19, 2005
Posts: 2376
Location: . . . in denial.
Captain Spalding is offline 

PostPosted: Sat Dec 03, 2011 4:31 pm    Post subject: Reply with quote

I think you are talking about the expansion chamber (circled in red below.) It's part of the evaporative control system and has nothing to do with the heater. For an explanation, see here. It's number 3 in the diagram.

Image may have been reduced in size. Click image to view fullscreen.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
BKellogg
Samba Member


Joined: November 21, 2011
Posts: 7
Location: Terrebonne, OR
BKellogg is offline 

PostPosted: Sat Dec 03, 2011 7:46 pm    Post subject: Reply with quote

Captain Spalding wrote:
I think you are talking about the expansion chamber (circled in red below.) It's part of the evaporative control system and has nothing to do with the heater. For an explanation, see here. It's number 3 in the diagram.

Image may have been reduced in size. Click image to view fullscreen.


Thanks Michael. That helps a lot! Now I just gotta find one!!!
Brian
Back to top
View user's profile Send private message Classifieds Feedback
Ptomas
Samba Member


Joined: February 28, 2011
Posts: 5
Location: Charleston,SC
Ptomas is offline 

PostPosted: Mon Dec 12, 2011 10:04 am    Post subject: Reply with quote

Hiyas-
I have searched high and low,but dont see my particular dilemma. Please flog,then re-direct me if I have missed it. Confused
The short version- myBN-4 heater ls largely in good shape,the fan runs and times out correctly, the timer switch @ dash works,reset switch works,metering fuel pump clicks each time I have tested it w/ straight 12 v.I have disassembled the heater down to its blower motor,cleaned everything,replaced suspect terminals,and reassembled all.
I have 12v. coming into unit,but can only get 6-7.5 v @ fuel pump. Im at a loss.There are no obvious ground issues that I can find.Does anyone have an idea where I could be losing voltage?

Thanks-
Ptomas

P.S. I think I posted in the wrong place-srry!
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Rabid Irish
Samba Member


Joined: November 26, 2010
Posts: 51
Location: Glyndon Maryland
Rabid Irish is offline 

PostPosted: Mon Dec 12, 2011 3:14 pm    Post subject: Reply with quote

Can someone please post pictures of the gas heater's small fuel pump installed? When I got my car the gas tank was replaced with a new one, and the small fuel pump was removed. I am trying to figure out how the fuel lines should be run from the gas tank to the pump, then form the pump to the heater. I see where the pump is to mount on the body, but the bottom of my gas tank only has one fuel line hook up. What am I missing here? I searched but could not find anything highlighting what i need to know. Thanks

UPDATE:

Guess I did not search hard enough. found the answer to my own question. In case someone else is wondering here is a picture I borrowed from another thread.

Image may have been reduced in size. Click image to view fullscreen.


Does anyone have one of these original "T" connectors they wanna sell me?
Back to top
View user's profile Send private message Classifieds Feedback
Jimmy James
Samba Member


Joined: December 14, 2011
Posts: 1
Location: Tennessee
Jimmy James is offline 

PostPosted: Wed Dec 14, 2011 2:43 pm    Post subject: Heater for 1974 VW Thing Reply with quote

I am wanting to purchase a 1974 Thing but it does not have a heater. Is there an aftermarket heater that will work. Can't seem to find one anywhere. Any suggestions or links to a site that will have something? Thanks
Back to top
View user's profile Send private message Classifieds Feedback
Semper_Dad
Samba Member


Joined: May 14, 2005
Posts: 3077
Location: HELL Paso, TX
Semper_Dad is offline 

PostPosted: Wed Dec 14, 2011 3:57 pm    Post subject: Re: Heater for 1974 VW Thing Reply with quote

Jimmy James wrote:
I am wanting to purchase a 1974 Thing but it does not have a heater. Is there an aftermarket heater that will work. Can't seem to find one anywhere. Any suggestions or links to a site that will have something? Thanks


74s did not normally come with the auxillary gas heater like the 73s and older 181s. You can retrofit a BN4 into a 74 if you wish. Probably more cost effectve to rebuild or re-establish the existing heating system though. Mine works fine once your down the road for about 10 minutes. Infact, I usually have to crack open a window.

There are other aftermarket heaters that have been installed besides the BN4. Stewart-Warner comes to mind. Bus and camper folk have been installing systems by Propex but you will have to carry a propane bottle. Maybe that would be a good use of that extra aircleaner bracket in the engine bay.
_________________
74 VW Thing - Walküre
78 GMC Motorhome - Valhalla
"Patina" my ass, that's rust
Recovering Split Bus Addict
World 181 Registry Map:
http://bit.ly/1axDF1r
Gitm registared boys!
Officially, there are only 112 181s in the world
Back to top
View user's profile Send private message Facebook Gallery Classifieds Feedback
Russ5000
Samba Member


Joined: September 01, 2011
Posts: 2
Location: Northridge, CA
Russ5000 is offline 

PostPosted: Sat Dec 17, 2011 6:59 pm    Post subject: BN4 Heater? Reply with quote

My reset switch will not reset, what could be the cause of this?
Thanks
Russ
Back to top
View user's profile Send private message Classifieds Feedback
vwinnovator
Samba Member


Joined: July 11, 2005
Posts: 786
Location: Still doing it in the back of your VW
vwinnovator is offline 

PostPosted: Sat Jan 07, 2012 8:34 pm    Post subject: Reply with quote

does anyone know how much pressure the Thing BN4 fuel pump puts out?
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Captain Spalding
Samba Member


Joined: February 19, 2005
Posts: 2376
Location: . . . in denial.
Captain Spalding is offline 

PostPosted: Sat Jan 07, 2012 10:29 pm    Post subject: Reply with quote

The specification for the fuel pump is not a pressure but a volume of fuel per strokes. The pump is supposed to put out 13 to 15 cc of fuel per 200 strokes. I'll work up a little mnemonic tomorrow or Monday.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Captain Spalding
Samba Member


Joined: February 19, 2005
Posts: 2376
Location: . . . in denial.
Captain Spalding is offline 

PostPosted: Sun Jan 08, 2012 11:38 am    Post subject: Reply with quote

Okay, here it is. Excerpted from the Eberspächer BN4 Troubleshooting and Repair Manual, with some license taken by yours truly with regard to cleaning up the translation a bit.

Image may have been reduced in size. Click image to view fullscreen.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Raggedy Ragtop
Samba Member


Joined: July 20, 2006
Posts: 88
Location: ABQ
Raggedy Ragtop is offline 

PostPosted: Mon Jan 09, 2012 1:51 pm    Post subject: Blown Fuses Reply with quote

I'm having a blown fuse problem at the heater using 8 or 16 amp fuses. The heater fires up with no problem, runs a couple of cycles and blows the fuse. All of the connections are tight and in real good condition and have been checked with a voltmeter. I have noticed that when the temp knob is pulled all the way out the fuse blows sooner than if the knob is only pulled out 1/4 or 1/2 way. The overall condition of the heater is excellent having been in a garaged car all it's life.
Thanks for any assistance or referral!
_________________
killin' time before it kills me!
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Captain Spalding
Samba Member


Joined: February 19, 2005
Posts: 2376
Location: . . . in denial.
Captain Spalding is offline 

PostPosted: Mon Jan 09, 2012 3:41 pm    Post subject: Re: Blown Fuses Reply with quote

The overheating fuse (S17 in the wiring diagram) sits atop the overheating switch (F17). The fuse is inline with the heater fuel pump. If the temperature in the heater becomes too high, the overheating switch shorts the fuse to ground, and the fuse blows. This in turn cuts off the fuel pump.

So, if your fuse is blowing, either the temperature in the heater is getting too high, in which case the temperature regulating switch needs to be adjusted — OR — the overheating switch only thinks the temperature is too high, in which case the overheating switch can be adjusted. Here are some instructions for adjusting the overheating switch. I caution you not to simply adjust it without following the instructions completely and measuring the temperature.

HTH

Image may have been reduced in size. Click image to view fullscreen.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Raggedy Ragtop
Samba Member


Joined: July 20, 2006
Posts: 88
Location: ABQ
Raggedy Ragtop is offline 

PostPosted: Mon Jan 09, 2012 4:55 pm    Post subject: Re: Blown Fuses Reply with quote

Thank you for confirming what I suspected. The heat at the duct seams extremely hot but I've not measured it. Assuming I'll be measuring the duct temperature, would a kitchen thermometer give an accurate enough reading or do I need to rent/purchase something auto related?
Thanks very much for your help!
_________________
killin' time before it kills me!
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Captain Spalding
Samba Member


Joined: February 19, 2005
Posts: 2376
Location: . . . in denial.
Captain Spalding is offline 

PostPosted: Mon Jan 09, 2012 8:03 pm    Post subject: Re: Blown Fuses Reply with quote

Raggedy Ragtop wrote:
Thank you for confirming what I suspected. The heat at the duct seams extremely hot but I've not measured it. Assuming I'll be measuring the duct temperature, would a kitchen thermometer give an accurate enough reading or do I need to rent/purchase something auto related?
Thanks very much for your help!

Well, these days "kitchen thermometer" covers a lot of ground. I believe it matters whether the thermometer is meant to measure air temp or contact temp. A meat thermometer, for example, might be the wrong choice. But there are thermometers that mount through the skin of a barbecue or smoker and measure the air temp inside the barbecue that might work - if you can find one with a nice long probe, that would be better. BTW, I'm totally flying by the seat of my pants here. If I were doing it myself, I'd get the thermocouple attachment for my Fluke multimeter.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Alexios
Samba Member


Joined: November 05, 2009
Posts: 76
Location: Norway
Alexios is offline 

PostPosted: Fri Feb 10, 2012 2:08 pm    Post subject: Reply with quote

Hi

I am having almost the same issue. My heater is working fine(finally) but burns the fuse after one hour and 30 min. If i replace the fuse immediately it blows it again after less than 5 minutes. The fuse that gets blow is the one under the dash.

Does the thermal cutout switch through the fuse under the dash or the one one the heater?

Alex
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Captain Spalding
Samba Member


Joined: February 19, 2005
Posts: 2376
Location: . . . in denial.
Captain Spalding is offline 

PostPosted: Fri Feb 10, 2012 3:16 pm    Post subject: Reply with quote

Alexios wrote:
Hi

I am having almost the same issue. My heater is working fine(finally) but burns the fuse after one hour and 30 min. If i replace the fuse immediately it blows it again after less than 5 minutes. The fuse that gets blow is the one under the dash.

Does the thermal cutout switch through the fuse under the dash or the one one the heater?

The thermal cutout switch blows the fuse on the heater.

The fuse that is blowing under the dash is a red 16 amp fuse at position 9, correct? The fuse atop the thermal cutout switch is a white 8 amp fuse, yes?
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Display posts from previous:   
Reply to topic    Forum Index -> Thing/Type 181 All times are Mountain Standard Time/Pacific Daylight Savings Time
Page: Previous  1, 2, 3, 4, 5  Next
Page 3 of 5

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum

About | Help! | Advertise | Donate | Premium Membership | Privacy/Terms of Use | Contact Us | Site Map
Copyright © 1996-2016, Everett Barnes. All Rights Reserved.
Not affiliated with or sponsored by Volkswagen of America | Forum powered by phpBB