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Old 06-15-2020, 12:11 PM   #1
PatrickandMarga
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Second Black Water Flush Pull ???

On our 3741FK, the gray water flush is near the front. Toward the back, there is the black water flush valve which is clearly marked. Next to that is another pull valve with no markings. What is this for?


https://i.imgur.com/LkYOM4k.jpg

We had our first run this past weekend and love it.
 
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Old 06-15-2020, 12:26 PM   #2
DQDick
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Pictures would help, but the basic setup for a Montana with only one bathroom is one black tank pull and two grey tank pulls. One gray tank is for the sink and the other for the shower. If you have a second bath then there is a fourth pull for a second black tank.
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Old 06-15-2020, 01:13 PM   #3
PatrickandMarga
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Sorry, I forgot to add the pic. We only have one bathroom.
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Old 06-15-2020, 01:15 PM   #4
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Dick has it right .On our FK the front pull is for the kitchen and the one next to the black pull is for the gray for the bath and back sink, and as always we pull black first, the frint gray then the back gray,
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Old 06-15-2020, 07:15 PM   #5
PatrickandMarga
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Thank you, this is definitely a learning experience. I emailed my dealer, but no reply.
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Old 06-22-2020, 04:35 PM   #6
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Questions along the same lines... First time out with our 2020 HC 335BH 10th Anniv. We have a bath and a half. 2 pulls in the Convenience Center marked Black and Gray. Another in a hatch cover a couple feet back from C Center. Another pull is back behind the rear tire. Naming them from the front are they Front Head, Front shower/sink, kitchen sink, then back head/sink. If that's right then what all does the black tank flush service? Really like the rig. I'd like it even better if I knew what I was dumping and flushing. Everyone probably knows what I found in the one-size-fits-all owners manual about the tanks.
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Old 06-22-2020, 04:42 PM   #7
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Quote:
Originally Posted by PatrickandMarga View Post
Sorry, I forgot to add the pic. We only have one bathroom.
What's the picture of the convenience center look like? Are there two dump valves there?
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Old 06-23-2020, 09:58 PM   #8
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Convenience Center pic
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Old 06-24-2020, 07:13 AM   #9
speedster100
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Two tank drain valves in convenience centre, one for the large black tank & one for the large grey tank.
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Old 06-28-2020, 01:51 PM   #10
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Yes one for kitchen one for shower and sink. We had the same problem. Had to ask a fellow Montana owner.
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Old 06-28-2020, 06:08 PM   #11
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with a front kitchen the front gray would be the galley pull and the other grey would be for bathroom sink and shower. If you put a washer and dryer in it would also drain into the bathroom grey. the galley tank is always the smallest tank.
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Old 06-28-2020, 06:28 PM   #12
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OK Camper What else besides the black tank does the rinse work on.

As far as I know, just the black tank. The gray tanks should not have any solids in them that need extra help to clean out. I always flush my black tank at least twice and sometimes three times. After the initial flush I close the black tank valve and rinse for three or four minutes as that amount of water accumulating in the black tank should not over flow your toilet. Best you check you own though. I then open the valve again to drain the tank. The first time I did that I was amazed at how much more waste was left after the initial flush, and that is using a breakdown additive. Don't get your hopes up though about cleaning your sensors. You name it, I have tried it, and they remain securely stuck at 75%.
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Old 06-30-2020, 06:38 AM   #13
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OP, if this rig is new to you, use a clear connection and check that the black tank is marked correctly. My black and grey were reversed and I have heard this many times. Also we use Calgon and Dawn and the sensors are still working after three years.
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