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[GMCnet] Gray and black water tank readings [message #323266] Sun, 03 September 2017 16:20 Go to next message
Jane Field is currently offline  Jane Field   United States
Messages: 22
Registered: April 2013
Karma: 0
Junior Member
I am having a problem with my tank electric read-outs. One tank is reading
full when in fact it is empty. I cleaned the leads on the outside of the
tanks, but one tank is stills reading full. I think it is the black water
tank.

What else might I try.

Chuck Field
77 Royale
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Re: [GMCnet] Gray and black water tank readings [message #323267 is a reply to message #323266] Sun, 03 September 2017 16:41 Go to previous messageGo to next message
powerjon is currently offline  powerjon   United States
Messages: 2446
Registered: January 2004
Karma: 5
Senior Member
Jane,
If you still have the factory senders, there is very high chance that they have failed. The original construction of the senders was that water could get into the variable resistors and they fail. They are not repairable and not available, but there are several fixes that you can use.

A new style dry electronic sensors are available that are a direct bolt in and wiring.

http://www.appliedgmc.com/prod.itml/icOid/839
and
http://www.appliedgmc.com/prod.itml/icOid/838

I did it this way and they work well.

Now a more cost effective route is to use this:

http://www.appliedgmc.com/prod.itml/icOid/1181

I have this in our coach now and it does work fine. They are a probe unit and does require adding probes to the tanks and some wiring.

JR Wright
GMC Great Laker MHC
GMC Eastern States Charter Member
GMCGL Tech Editor
GMCMI
78 GMC Buskirk 30’ Stretch
1975 GMC Avion (Under Reconstruction)
Michigan


> On Sep 3, 2017, at 5:20 PM, Jane Field wrote:
>
> I am having a problem with my tank electric read-outs. One tank is reading
> full when in fact it is empty. I cleaned the leads on the outside of the
> tanks, but one tank is stills reading full. I think it is the black water
> tank.
>
> What else might I try.
>
> Chuck Field
> 77 Royale
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org


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J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
Re: [GMCnet] Gray and black water tank readings [message #323277 is a reply to message #323267] Sun, 03 September 2017 23:05 Go to previous messageGo to next message
jimk is currently offline  jimk   United States
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
Senior Member
I think Chuck has a Coachman, so there mist be paper stuck on the sensor.
Fill the tank about 1/3 full and jerk as you drive as the water need to
slosh on the rear side.

On Sun, Sep 3, 2017 at 2:41 PM, John Wright wrote:

> Jane,
> If you still have the factory senders, there is very high chance that they
> have failed. The original construction of the senders was that water could
> get into the variable resistors and they fail. They are not repairable and
> not available, but there are several fixes that you can use.
>
> A new style dry electronic sensors are available that are a direct bolt in
> and wiring.
>
> http://www.appliedgmc.com/prod.itml/icOid/839
> and
> http://www.appliedgmc.com/prod.itml/icOid/838
>
> I did it this way and they work well.
>
> Now a more cost effective route is to use this:
>
> http://www.appliedgmc.com/prod.itml/icOid/1181
>
> I have this in our coach now and it does work fine. They are a probe unit
> and does require adding probes to the tanks and some wiring.
>
> JR Wright
> GMC Great Laker MHC
> GMC Eastern States Charter Member
> GMCGL Tech Editor
> GMCMI
> 78 GMC Buskirk 30’ Stretch
> 1975 GMC Avion (Under Reconstruction)
> Michigan
>
>
>> On Sep 3, 2017, at 5:20 PM, Jane Field wrote:
>>
>> I am having a problem with my tank electric read-outs. One tank is
> reading
>> full when in fact it is empty. I cleaned the leads on the outside of the
>> tanks, but one tank is stills reading full. I think it is the black
> water
>> tank.
>>
>> What else might I try.
>>
>> Chuck Field
>> 77 Royale
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>



--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
Re: [GMCnet] Gray and black water tank readings [message #323278 is a reply to message #323277] Sun, 03 September 2017 23:39 Go to previous message
jimk is currently offline  jimk   United States
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
Senior Member
Chuck,
I can get you new style sensor screws that tends to over come that issue.

On Sun, Sep 3, 2017 at 9:05 PM, Jim Kanomata wrote:

> I think Chuck has a Coachman, so there mist be paper stuck on the sensor.
> Fill the tank about 1/3 full and jerk as you drive as the water need to
> slosh on the rear side.
>
> On Sun, Sep 3, 2017 at 2:41 PM, John Wright
> wrote:
>
>> Jane,
>> If you still have the factory senders, there is very high chance that
>> they have failed. The original construction of the senders was that water
>> could get into the variable resistors and they fail. They are not
>> repairable and not available, but there are several fixes that you can use.
>>
>> A new style dry electronic sensors are available that are a direct bolt
>> in and wiring.
>>
>> http://www.appliedgmc.com/prod.itml/icOid/839
>> and
>> http://www.appliedgmc.com/prod.itml/icOid/838
>>
>> I did it this way and they work well.
>>
>> Now a more cost effective route is to use this:
>>
>> http://www.appliedgmc.com/prod.itml/icOid/1181
>>
>> I have this in our coach now and it does work fine. They are a probe
>> unit and does require adding probes to the tanks and some wiring.
>>
>> JR Wright
>> GMC Great Laker MHC
>> GMC Eastern States Charter Member
>> GMCGL Tech Editor
>> GMCMI
>> 78 GMC Buskirk 30’ Stretch
>> 1975 GMC Avion (Under Reconstruction)
>> Michigan
>>
>>
>>> On Sep 3, 2017, at 5:20 PM, Jane Field wrote:
>>>
>>> I am having a problem with my tank electric read-outs. One tank is
>> reading
>>> full when in fact it is empty. I cleaned the leads on the outside of
>> the
>>> tanks, but one tank is stills reading full. I think it is the black
>> water
>>> tank.
>>>
>>> What else might I try.
>>>
>>> Chuck Field
>>> 77 Royale
>>> _______________________________________________
>>> GMCnet mailing list
>>> Unsubscribe or Change List Options:
>>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
>
>
>
> --
> Jim Kanomata
> Applied/GMC, Newark,CA
> jimk@appliedairfilters.com
> http://www.appliedgmc.com
> 1-800-752-7502
>



--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org


Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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