Sunline RV Forum
Sunline User Photos

Go Back   Sunline Coach Owner's Club > Model Specific Forums > Sunline Travel Trailers
Click Here to Login

Join Sunline Club Forums Today


Reply
 
Thread Tools Search this Thread Display Modes
Old 07-03-2016, 12:02 PM   #1
Junior Member
 
Join Date: Jan 2010
Posts: 5
SUN #990
freebo
1998 Saturn T1700 Plumbing Question?

Hey there all. First post I've ever started. Hello!

Question on sink drain plumbing in the T-1700: Kitchen sink has been backing up lately. Slow/no drain. Bath tub drains without issue, bathroom vanity sink as well...

Thought the air admittance vent under the sink might need replacing. Did that, at a whopping cost of $3 plus tax. When the upright which attaches the vent was unscrewed, the sink drained with a whoosh! FYI: This vent/upright is on the downstream side of the P-trap.

Since replacing the vent ($3 plus tax) and re-installing to its upright, we're back to slow/no drain from the sink. Took the upright/vent back off, and again - sink drained immediately. Unfortunately, the water also came up and out the open upright into the cabinet under the sink... Dang it!

Ahem. Sorry about that.

So: Ran a snake down the upright, getting a little way down the line, but not too far. I think too many bends?

Anyway: Now I'm just confused. Do we have a clog between the sink and grey tank? Can't imagine any other cause... BUT: How could removing the vent (and its upright) allow the rapid drain if there's a clog? Did it end up in the cabinet and I just thought it drained out? Q
__________________

__________________
'The ultimate measure of a man is not where he stands in moments of comfort, but where he stands at times of challenge and controversy.'
freebo is offline   Reply With Quote
Old 07-04-2016, 07:13 AM   #2
Moderator
 
JohnB's Avatar
 
Join Date: Nov 2006
Location: Ohio
Posts: 9,957
SUN #89
JohnB is on a distinguished road
H'mm, OK a few questions as it seems you have dug into this pretty good already.

OK you changed out the air vent and it seems to drain out with "woosh" once air can get into the line.

By chance, can you post of pic of the sink trap piping and the air vent?

By chance, did you snake out the sink trap? Is it clear?

Does the drain go slow with the gray tank is empty or when it is more full?

Have you checked the gray tank vent line that goes up to the roof, at the roof line? Some times spiders make a web over the top of the vent pipe and restrict it. You may have to remove the vent cover to tell. And if you do, see if the vent pipe at the roof line seems to have dropped down an inch or more?

A "thought" is the gray tank itself itself is not venting. If it is sealed tight and no tank vent, then it is harder for water to enter a closed tank. The air admittance valve at the sink needs a slight vacuum to open it. if the water is draining so slow because the tank is not vented, it may not create enough vacuum to open the air admittance valve.

Some times the tank vent pipe will slide down into the tank. Pending how far, a 1/2 or 3/4 full or something less then full, the water will seal off the tank vent pipe hanging low and then you have no vent. Or a spider nested over the pipe, usually at the roof line.

What year and model do you have?

Hope this helps

John
__________________

__________________
Current Sunlines: 2004 T310SR, 2004 T1950, 2004 T2475, 2007 T2499
Prior Sunlines: 2004 T2499 - Fern Blue
2005 Ford F350 Lariat, 6.8L V10 W/ 4.10 rear axle, CC, Short Bed, SRW. Reese HP trunnion bar hitch W/ HP DC

Google Custom Search For Sunline Owners Club
JohnB is offline   Reply With Quote
Old 07-04-2016, 05:38 PM   #3
Senior Member
 
Join Date: Apr 2011
Location: Maine
Posts: 2,918
SUN #2097
mainah is an unknown quantity at this point
The vent thing is to allow the gray tank to drain with out pulling the water out of the traps. Both drains in the kitchen sink go to a single drain there is nothing else connected to them. They also have only one trap I would remove the trap and see what might be in it, it is at the rear of both sink drains and goes directly to the gray tank.
__________________
mainah is offline   Reply With Quote
Reply

Tags
plumbing


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
RV Plumbing question rickndeb Introduce Yourself 4 05-11-2015 08:37 AM
First trip for our T1700 saturn marcom13 Sunline Travel Trailers 2 08-06-2014 08:24 AM
'94 T1700 frig question-level question harbortj Repairs and Maintenance 4 04-13-2010 06:46 PM
1998 saturn westernmassachusetts Sunline Travel Trailers 3 06-17-2008 09:36 AM
7332 Saturn t1700 just a few questions. bignascarfan Sunline Travel Trailers 0 04-13-2008 02:01 PM



Disclaimer:

This website is not affiliated with or endorsed by Sunline RV or any of its affiliates. This is an independent, unofficial site.


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 10:41 AM.