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Old 06-03-2021, 09:14 AM   #1
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Kitchen sink clog

We have a 2015 Tiffin Allegro RED 37PA. The kitchen sink is critically clogged. Tried usual process including a draino type product. No luck. Finally took cabinet apart. Pretty sure the drain line that goes from the hepvo valve under the sink to the grey water tank is kinked; does anybody know how to get to that line? ls there anyone in Red Bay that does this kind of work? We are currently Wayne county area of Michgan. Thanks for any help.
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Old 06-03-2021, 12:17 PM   #2
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Tiffin Owners Club
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Location: DFW, Texas
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On some of the coaches you can remove the bottom panel inside the cabinet to be able to get to the drain underneath the slide. The flex lines use in some of the year have been known to kink. Here is a list from the Tiffin web site of outside services in the RB area.
2017 Phaeton 40IH XSH Maroon Coral - Power Glide Chassis with IFS
Previously '15 Tiffin Allegro RED 38QRA and '06 Itasca Sunrise 35A
'16 Jeep JKU Wrangler Sahara or '08 Honda Goldwing
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Old 06-04-2021, 05:19 AM   #3
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Location: Portland, Oregon
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The day we bought our coach the kitchen sink wouldn’t drain?! Took it back to the dealer. They found the air gap was the problem.

You may want to also look there.
Jeff & Gail
2019 Allegro Bus 40AP
2018 GMC Canyon Denali
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Old 06-04-2021, 06:23 AM   #4
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Thanks, we checked that and it isn't the problem.
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Old 06-05-2021, 05:53 AM   #5
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Does the sink drain when the slide is in? Our refrig water line (in a 2014 Allegro Bus 37AP) kinked when the slide was out, but not when it was in.

Tiffin fixed it at Red Bay. Rerouted the line. I would take it to Tiffin rather than one of the other shops in the area. I heard the wait times are quite good right now. (Considering the trip myself for some misc repairs.)
2014 Tiffin Allegro Bus 37AP
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