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KPK Samba Member
Joined: April 19, 2010 Posts: 6 Location: Maryland
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Posted: Wed May 12, 2010 4:26 pm Post subject: Question on the BN4 |
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I just bought a 73 Thing and am starting to look at the heater. I noticed in the pictures that there is a small heat shield (or something) that is over the exhaust. Mine doesn't have one - is that a necessity and if so soes anyone know where to get one and how much they cost? |
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Emeritusx Samba Member
Joined: June 20, 2008 Posts: 2775 Location: 12 inches behind the wheel
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Posted: Sat Mar 27, 2010 7:51 am Post subject: |
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For what its worth:
My heater was only working sometimes. And failure to light was becoming more and more a problem.
I took my battery charger and hit On side of the fuse, fan speed up, heater lit.
Took the charger off and hit the other side of the fuse.. No speed increase or anything. Cleaned the fuse ends and bang first time everytime..
BTW is the fuse bypassed in that picture ^^^^ ? _________________ 82 Westy ☢, 66 Splitty ☮, 73 Type 181 ✠ |
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Captain Spalding Samba Member
Joined: February 19, 2005 Posts: 2519 Location: . . . in denial.
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xavi_242 Samba Member
Joined: May 06, 2005 Posts: 1672 Location: Barcelona (SPAIN)
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Posted: Fri Jan 29, 2010 4:35 am Post subject: |
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forgot to say that the heater runs perfect now. just connected wires and replaced fuel lines and filter and some hammer knocks at the fuel pump that was stuck. _________________ 1967 Split SO-42 Dormobile |
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crofty Judas of the North
Joined: August 09, 2000 Posts: 19672 Location: Land of Whine and Phonies
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Posted: Mon Jan 04, 2010 8:49 pm Post subject: |
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xavi_242 wrote: |
alex1916v wrote: |
my military trekker has 2 fuse boards, curently theres only the big red from the starter motor doign anything on that 2nd fuse board, so off the big white plug for the heaters wires it goes into the fuse board but dosnt connect in the board where any power is....
So has anyone got any pics off the 2nd fuse board in situ with that dash panel flipped down, one pic showing where the wires are coming and going should help me out no end!!!
cheers for any info!
alex |
have the same problem right now... the big red was not in place and now I don't know where to connect it... :S
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Where's the wire from the other side of the red wire coming from? _________________ Your Vanagon sucks, Stop waving at me.
HamburgerBrad wrote: |
I slept on crofty's tent once. I passed out drunk from two bottles of Everett's brother's wine. |
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xavi_242 Samba Member
Joined: May 06, 2005 Posts: 1672 Location: Barcelona (SPAIN)
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Posted: Thu Dec 10, 2009 1:30 pm Post subject: |
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alex1916v wrote: |
my military trekker has 2 fuse boards, curently theres only the big red from the starter motor doign anything on that 2nd fuse board, so off the big white plug for the heaters wires it goes into the fuse board but dosnt connect in the board where any power is....
So has anyone got any pics off the 2nd fuse board in situ with that dash panel flipped down, one pic showing where the wires are coming and going should help me out no end!!!
cheers for any info!
alex |
have the same problem right now... the big red was not in place and now I don't know where to connect it... :S
_________________ 1967 Split SO-42 Dormobile |
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[email protected] Samba Member
Joined: February 21, 2003 Posts: 868 Location: Clifton Park NY Saratoga County
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Posted: Sat Oct 24, 2009 6:25 pm Post subject: |
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I have some Pmail me, Mike _________________ Michael Basso
http://www.thingparts.com
New and Used VW Thing Parts Free advice
CALL 518 630 0173 |
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Saturnin Samba Member
Joined: December 01, 2008 Posts: 1 Location: Charleston SC
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Posted: Sat Oct 24, 2009 5:59 pm Post subject: Help identify part on BN4 gas heater for Thing 1973 |
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Hello-- can someone tell me how this flat copper piece showed on this photo is called and where I can find a replacement? Mine was repaired but broke again... Thanks! Paul
http://i392.photobucket.com/albums/pp7/paulvw181/IMG_5269.jpg |
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alex1916v Samba Member
Joined: June 22, 2007 Posts: 33
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Posted: Sun Mar 01, 2009 11:44 am Post subject: |
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hi there, been thu most of the info on this thread, VERY helpful!!!
just one minor question....
i cant find any details regarding the wiring up fuse board end.... heres my problem.....
my military trekker has 2 fuse boards, curently theres only the big red from the starter motor doign anything on that 2nd fuse board, so off the big white plug for the heaters wires it goes into the fuse board but dosnt connect in the board where any power is....
ive got the big red one going to the first fuse on the right on the 2nd fuse board, this is the main live one, this has 2 fat red wires going off to power the normal 1st fuse board for all the other standard wiring lights etc....
then ive gotta connect the smaller black wire to the 3rd terminal along on the 2nd fuse board,... thats all fine but at the moment ive got nothing going in or out of that fuse board other than the main live...
this is how my 2nd fuse board looks, except now its got the far red going to the 1st fuse, where them big red's are going in etc...
has anyone got any info one this? im gonna go have a look for a colour wiring diagram for the military style trekker, because i went off of a civilian trekker wiring diagram for all the rest...
also does it matter which way round the fuel pump terminals are wired? im guessing if its incorrect it'll pump the wrong way?? there are no markings, on it..
the wires ive got are a brown and a green, as per drawing... ive just put em on at the mo, i can swap em...
Also, once i have this thing wired up, and ive connected the fuel line, whats the correct method of ignition??
im guessing i turn the green 'egg timer' knob on the dash, then wind it a little, then it should fire? what about the first time, ie should i try and bleed the fuel to the pump, or with it be fine pulling it thu the lines etc?? also ive got a 'choke' style knob, which i guess you pull for more heat?? can i pull this straight away???
So has anyone got any pics off the 2nd fuse board in situ with that dash panel flipped down, one pic showing where the wires are coming and going should help me out no end!!!
cheers for any info!
alex |
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[email protected] Samba Member
Joined: February 21, 2003 Posts: 868 Location: Clifton Park NY Saratoga County
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doublecanister Samba Member
Joined: September 23, 2008 Posts: 1184 Location: Richmond, Va
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Posted: Sat Jan 24, 2009 6:16 am Post subject: Re: the gas heaters, a troubleshooting walkthru, flow chart. |
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Hey Crofty and Fun181, after a bit of digging I again found the link to the flow chart troubleshooting guide (that says canada only).
I Also noticed it says :Troubleshooting Guide: BA-4 Gas Heater: (not BN4)
so I probably found somthing I cant use. (just saw that, oops)
http://oacdp.freeweb7.com/ba4.html
Others here: http://oacdp.freeweb7.com/docproject.html
I ran across them using the links in this sticky, somehow.
What do yall think? (of this canada flow chart ts guide??)would it be of any use??
I guess if its an entire diff model heater, prob not best to use these inst,
Oh, I thought I struck gold on this one. RATS!
But, I appreciate your input, I will try what you both reccomended. Thanks again guys! I'm gonna get this dern thing working somehow.
Be Good!
T. _________________ ****************************************
2020 - Mustang Eco Boost [High Performance]
1973 - Thing
1966 - Mustang GT- Fastback
1951 - Ford F1 pickup Flathead V8 |
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crofty Judas of the North
Joined: August 09, 2000 Posts: 19672 Location: Land of Whine and Phonies
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Posted: Fri Jan 23, 2009 12:21 am Post subject: |
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I'd clean all your grounds, flip the red emergency switch a couple of times and pop the top off of the thermostat switch to make sure everything looks ok in there. They can get moisture in them and corrode a little.
Also a PITA but changing the fuel lines (and adding clamps) is a must if it hasn't been done in a long time. _________________ Your Vanagon sucks, Stop waving at me.
HamburgerBrad wrote: |
I slept on crofty's tent once. I passed out drunk from two bottles of Everett's brother's wine. |
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Fun 181 Zu Geil!
Joined: October 20, 2006 Posts: 1003 Location: Connecticut
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Posted: Thu Jan 22, 2009 9:29 pm Post subject: Re: the gas heaters, a troubleshooting walkthru, flow chart. |
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doublecanister wrote: |
Hey everybody,
Just curious on these gas heaters, BN4 Eberspacher type;
I've gandered at the presented information and THANKS for making it available, i've learned a few things so far, but...
Does anybody know if there is a walkthru test document (flow chart style) to test these heaters?
As I am studying up on them; I was curious if there exists a troubleshooting document of flow chart design, something a tad bit more user friendly than what i've seen.
I know some places sell heater repair books, but I didnt want to buy one thats equal to the shop manual I already have.
Any suggestions or links to anything anyone?? |
While I was researching BN4 heaters I don't remember coming across any troubleshooting guides in a flow chart format. If no one posts an answer here I would suggest PMing/emailing your questions to either Capt. Spalding, Ian Epperson, Crofty, dan macmillan or Mike Basso ([email protected] ). These guys seem to be pretty knowledgeable about the Eberspacher, and can probably answer any technical question you may have.
Good luck,
Slim |
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doublecanister Samba Member
Joined: September 23, 2008 Posts: 1184 Location: Richmond, Va
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Posted: Wed Jan 21, 2009 11:18 am Post subject: the gas heaters, a troubleshooting walkthru, flow chart... |
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Hey everybody,
Just curious on these gas heaters, BN4 Eberspacher type;
I've gandered at the presented information and THANKS for making it available, i've learned a few things so far, but...
Does anybody know if there is a walkthru test document (flow chart style) to test these heaters?
As I am studying up on them; I was curious if there exists a troubleshooting document of flow chart design, something a tad bit more user friendly than what i've seen.
I know some places sell heater repair books, but I didnt want to buy one thats equal to the shop manual I already have.
Any suggestions or links to anything anyone??
Some folks have reccomended the RoMToC cd & I have found some links with this forums links on a Canada Only troubleshoting guide (that wasnt too difficult to follow), just hard to read due to quality of scan and appeared difficult to print in a usable format.
My heater status:
Currently, if you pull the thermostat out, turn on the fan, I get a clik and the fan runs & thats it, (sounds like the fuel pump clicked but cant tell for sure) I've read the fuel pumps may take a whack or 2 to start, & I would need to check for pulse 12volts at the pump, and to check the relay hasn't tripped.
Other than that, it appears to be a technical nightmare to troubleshoot these heaters. So far, I noticed my heater is a under 10k serial # in the 9k range, and looks like its never been used.
I hate working on objects i know little about, I wouldnt want to damage anything or set the THING on fire, but a little more 'user friendly' troubleshooting documentation would be a great idea....
Anyways, Just thought I'd throw it out and ask everybody, I may be wishing for somthing that doesnt exist, but you dont know till you ask.
Thanks All for any info and sorry for the rant....
I wanna drive my THING and its too freakin cold!!!
T. _________________ ****************************************
2020 - Mustang Eco Boost [High Performance]
1973 - Thing
1966 - Mustang GT- Fastback
1951 - Ford F1 pickup Flathead V8 |
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Ferretkona Samba Member
Joined: December 03, 2005 Posts: 1306 Location: Columbia, CA
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Posted: Fri Dec 26, 2008 9:02 pm Post subject: |
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oasis wrote: |
Are these holes already existing in a '73? Will you have the ability to switch back and forth with the defroster on? Will you also be using the timer switch from a '73?
Thanks for your answers. (Perhaps a tutorial would be a nice addition to this sticky. ) |
The holes are not in the firewall or fender, but they are on a 73. I have pictures of the locations and will use a holesaw to drill them out. The exhaust exits thru the inner fender behind the tire. I have a new timer switch (NOS) on hand.
I do not know if I will use the BN4 for the defroster yet. The ducts from the heater boxes are intact so I may just use them. _________________ 74 181 Thing
2008 Ford Sport Trac V8 4x4
2008 Ford Escape V6 |
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oasis Samba Member
Joined: December 12, 2002 Posts: 2168
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Posted: Fri Dec 26, 2008 7:59 pm Post subject: |
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Ferretkona wrote: |
I am adding a BN4 to my 74 bonnet...I have a BN4 in a box and I am ready to cut out the holes to add it. |
Are these holes already existing in a '73? Will you have the ability to switch back and forth with the defroster on? Will you also be using the timer switch from a '73?
Thanks for your answers. (Perhaps a tutorial would be a nice addition to this sticky. ) _________________ Now: 2003 New Beetle Turbo S / 1990 Single Cab Transporter / 2014 Tiguan R-Line 4motion / 2013 Tiguan S / 2002 Golf GLS TDI
Past: 1974 Thing Acapulco / 2009 Eos Komfort / 1997 Jetta GT / 2002 Cabrio GLX / 2002 Passat GLS / 1971 Super Beetle / 1993 EuroVan MV Westfalia / 1981 Pickup LX / 1985 Vanagon / 1986 Jetta GLI |
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Ferretkona Samba Member
Joined: December 03, 2005 Posts: 1306 Location: Columbia, CA
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Posted: Thu Dec 25, 2008 8:28 pm Post subject: |
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oasis wrote: |
Can a gas heater be made to work in '74 (and later) Things? I'm not limiting my question just to the BN4. If the answer is yes, what should one do to delete the heater boxes ... or should they be kept as a second heat source? |
Yes.
I am adding a BN4 to my 74 bonnet.
I currently have no heater boxes, but I will be replacing them when I get around to buying them. I have no problem running two heating sources.
I have a BN4 in a box and I am ready to cut out the holes to add it. The only thing I am missing is the fuel pump. _________________ 74 181 Thing
2008 Ford Sport Trac V8 4x4
2008 Ford Escape V6 |
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oasis Samba Member
Joined: December 12, 2002 Posts: 2168
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Posted: Thu Dec 25, 2008 7:17 pm Post subject: |
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Can a gas heater be made to work in '74 (and later) Things? I'm not limiting my question just to the BN4. If the answer is yes, what should one do to delete the heater boxes ... or should they be kept as a second heat source? _________________ Now: 2003 New Beetle Turbo S / 1990 Single Cab Transporter / 2014 Tiguan R-Line 4motion / 2013 Tiguan S / 2002 Golf GLS TDI
Past: 1974 Thing Acapulco / 2009 Eos Komfort / 1997 Jetta GT / 2002 Cabrio GLX / 2002 Passat GLS / 1971 Super Beetle / 1993 EuroVan MV Westfalia / 1981 Pickup LX / 1985 Vanagon / 1986 Jetta GLI |
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amishman Samba Member
Joined: March 09, 2004 Posts: 3219 Location: California
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Posted: Thu Dec 11, 2008 3:45 pm Post subject: |
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crofty wrote: |
I second your request for sticky status! |
I 3rd it.
Now that I am working on cleaning and installing my hardtop, and maybe use my Thing in winter, I will need to work on the heater, as I have no clue if mine works.
tj _________________ tj (the Amishman)
Come visit my web site!
http://www.vwhippie.com |
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crofty Judas of the North
Joined: August 09, 2000 Posts: 19672 Location: Land of Whine and Phonies
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Posted: Thu Dec 11, 2008 3:35 pm Post subject: |
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I second your request for sticky status! _________________ Your Vanagon sucks, Stop waving at me.
HamburgerBrad wrote: |
I slept on crofty's tent once. I passed out drunk from two bottles of Everett's brother's wine. |
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