It is currently Thu Nov 15, 2018 12:30 pm

All times are UTC - 5 hours [ DST ]


Forum rules


Please click here to view the forum rules



Post new topic Reply to topic  [ 11 posts ] 
Author Message
PostPosted: Thu Nov 08, 2018 2:04 am 
356 Fan

Joined: Sat Sep 10, 2011 11:47 am
Posts: 4
Fuel level sender repair. I have a 1958 A coupe that has a problem with the fuel sender. Upon examination I found that there were drop outs in continuity when the float arm is moved from full to empty. Which repair companies can repair this type of problem? It is the original sender to the car, I wish to retain this unit for the car as it is correctly dated. Thanks W Jeff Mullis


Top
 Profile  
Reply with quote  
PostPosted: Thu Nov 08, 2018 3:33 am 
356 Fan
User avatar

Joined: Tue Jul 08, 2008 11:50 am
Posts: 691
Location: Whidbey Island WA.
It's probably just corrosion on the wiper/ wire coil. Remove the cork gasket and soak it in pickling vinegar for a couple days. The vinegar will dissolve the corrosion on the brass and copper wire. Then soak it in baking soda for 10 min to neutralize the acid, then rinse with water and blow dry with a hair dryer on low. It should read 0-200 ohms as you move the float.

The vinegar won't hurt the cork if its stuck. I just did one. I used evaporust and it works fine now.


Attachments:
File comment: AFTER; ll the rust is gone, the pits remain but it works, will cover this with POR when we seal the tank. You can see the wire resistor across the window, and the wiper to the right.
image.jpeg
image.jpeg [ 1.09 MiB | Viewed 201 times ]
File comment: BEFORE; This was pull from a C a couple days ago. Metered open. And very ugly
image.jpeg
image.jpeg [ 1.26 MiB | Viewed 201 times ]

_________________
John Brooks

62 Roadster
66 912
getting pushed around in porsches since 1965
Top
 Profile  
Reply with quote  
PostPosted: Thu Nov 08, 2018 6:04 am 
356 Fan
User avatar

Joined: Tue Mar 25, 2008 5:34 pm
Posts: 1649
I have been restoring senders for years for many of the shops out there. The A/B senders typically suffer from a worn out pivot hole leading to a bouncy needle. Broken resistor wires are also quite common and can be re-wound.

I have been pushed back on some existing restorations as my plater ran into some issues. Hope to finish these senders in the next weeks.


Attachments:
IMG_1153.JPG
IMG_1153.JPG [ 769.26 KiB | Viewed 197 times ]

_________________
'56 Coupe
'57 Coupe
'59 Cab 
'60 Coupe
Top
 Profile  
Reply with quote  
PostPosted: Thu Nov 08, 2018 12:16 pm 
356 Fan
User avatar

Joined: Tue Apr 15, 2008 4:37 pm
Posts: 3846
Location: SW Los Angeles
There is a company, Specialty Cars Service Center that repairs VDO gauges.

Mike

_________________
Mike Wilson
Lomita, CA
'63 B coupe


Top
 Profile  
Reply with quote  
PostPosted: Thu Nov 08, 2018 1:58 pm 
356 Fan
User avatar

Joined: Tue Oct 26, 2010 10:46 am
Posts: 348
Location: Calgary Alberta
Tag: 1957 356 A Coupe
Joris
I have been looking diligently for that plastic isolator piece for the positive side connection.
would you share your supplier or give me a hint on where I could get one ?
The senders look amazing for sure


Attachments:
sender isolation piece..PNG
sender isolation piece..PNG [ 350.4 KiB | Viewed 140 times ]

_________________
 
Top
 Profile  
Reply with quote  
PostPosted: Thu Nov 08, 2018 5:10 pm 
356 Fan
User avatar

Joined: Wed Nov 25, 2015 9:12 pm
Posts: 678
Location: Sunshine Coast Australia
Very nice work Joris. My (Australian) BT6 has that isolator but it is black. Is that correct? The gauge was rather inaccurate and had erratic motion, but after some testing and cleaning of the resistor coil and associated parts (and fitting a capacitor over the terminals) it is solid and accurate now.

_________________
Merv
TYP356
1963 356B T6
1968 911 SWB


Top
 Profile  
Reply with quote  
PostPosted: Thu Nov 08, 2018 6:05 pm 
356 Fan
User avatar

Joined: Tue Oct 26, 2010 10:46 am
Posts: 348
Location: Calgary Alberta
Tag: 1957 356 A Coupe
Mervyn / Joris
how do you clean the sender ?
do you have to take it apart, or just as per above, dip in vinegar, as per above ??

_________________
 


Top
 Profile  
Reply with quote  
PostPosted: Thu Nov 08, 2018 6:17 pm 
356 Fan
User avatar

Joined: Tue Jul 08, 2008 11:50 am
Posts: 691
Location: Whidbey Island WA.
I have also used a pink eraser, rub lightly, in the Direction of the winding NOT ACROSS IT. This removes the corrosion and makes the wire bright again. But a chem dip is easier. It takes longer but no chance on breaking the wire on the coil. This is a pretty simple circuit. You can also carefully strighten the four tabs and disassemble it, unsolder the resistor and rebuild everything. It was assembled by a human, you can fix it.

I have done it both ways, but the chem dip is the easiest.

The ring terminal insulator is a DIN standard component.

_________________
John Brooks

62 Roadster
66 912
getting pushed around in porsches since 1965


Top
 Profile  
Reply with quote  
PostPosted: Thu Nov 08, 2018 11:57 pm 
356 Fan
User avatar

Joined: Tue Oct 26, 2010 10:46 am
Posts: 348
Location: Calgary Alberta
Tag: 1957 356 A Coupe
where would I get a DIN terminal insulator like that ??

_________________
 


Top
 Profile  
Reply with quote  
PostPosted: Fri Nov 09, 2018 4:03 am 
356 Fan
User avatar

Joined: Wed Nov 25, 2015 9:12 pm
Posts: 678
Location: Sunshine Coast Australia
Jim,

Mine has the top sender and is not on the flat tank (BT6, non-US). It looks like this (mine was in much better condition). I was quite taken by the 'petals' on the ends of the float as a means to increase drag, I suspect, and dampen the action. I dismantled it before cleaning after an overnight soak in some vinegar.

Image

_________________
Merv
TYP356
1963 356B T6
1968 911 SWB


Top
 Profile  
Reply with quote  
PostPosted: Fri Nov 09, 2018 7:04 am 
356 Fan
User avatar

Joined: Tue Mar 25, 2008 5:34 pm
Posts: 1649
All those parts not currently available I have made myself or had made to ensure an as authentic as possible result. This includes the wire shield and the insulator as well as some of the hardware for which the DIN spec has changed.

For those looking for an appropriate dated sender for their car, I have quite a few cores with different dates

_________________
'56 Coupe
'57 Coupe
'59 Cab 
'60 Coupe


Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 11 posts ] 

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: Dick Weiss, Edwin Ek, EricMcKinley, Google [Bot], Rick Wall


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 post attachments in this forum

Jump to:  
Powered by phpBB® Forum Software © phpBB Group