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Old 10-19-2013, 04:26 PM   #1
BikerBill
 
2014 Interstate Ext. Coach
Poconos of Pa , Pennsylvania
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water tank inlet lock

On our new 2014/14 Interstate motorhome I'm quite concerned about the screw off chrome metal cap for the manual water tank fill. I've heard rumors that some have accidentally had diesel added and I'm also concerned about pranksters opening it and dumping something into our water supply. Has anyone had any luck finding a locking screw-type cap to replace the current cap?
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Old 10-20-2013, 10:00 AM   #2
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Welcome to the forum. Have you tried RV suppliers such as camping world?
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Old 10-21-2013, 10:40 AM   #3
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I have the same concern but have never seen anything. Good luck in your search and let us know if you turn something up!
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Old 10-21-2013, 08:32 PM   #4
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Perko Vented Tank Filler and Lock

I also would like to have a lock on this water fill. So I took a close look at my water gravity fill cap and determined the item is made by Perko with Fig. 540 on it as a part number. Then through the magic of Google I found the Perko web site and this is actually a Boating/Marine item used for both fuel and water vented fillers. The following links will take you to the details.
Perko Web site for Fig. 540
http://www.perko.com/catalog/category/fills_and_vents/product/57/ [Click on the Ordering tab to see part number for water filler]
Perko Web site for vented filler lock:
http://www.perko.com/catalog/category/fills_and_vents/product/207/

I’ve attached a copy of the instructions for the lock so you can see how it works.
They are available on Amazon and eBay, plus lots of other marine suppliers. This is not a normal RV item.
Enjoy,
Attached Files
File Type: pdf Perko Lock Fig 0525 Instructions.pdf (176.5 KB, 59 views)
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Old 10-21-2013, 09:28 PM   #5
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Thanks Mike just ordered it from Amazon.
Peter
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Old 10-21-2013, 10:28 PM   #6
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Me too. Thanks Boxter1971! I hope I ordered the right part. i only ordered the locking fill insert, p/n 0525DP0BLK.
David
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Old 10-22-2013, 07:22 AM   #7
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Love this forum. Thanks Mike!
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Old 10-22-2013, 07:45 AM   #8
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love the forum

OK, I got my answer and thanks. Will order it soon.
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Old 10-23-2013, 07:55 PM   #9
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Mine came for eBay supplier Northern Marine Discount today; p/n 0525DP0BLK. It goes into the filler fairly easy but I found it a bit tricky to remove.
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Old 10-24-2013, 04:04 PM   #10
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Got mine today too. Tried it out right away got in OK as I turned and try to pull it out the key with the lock came out but not the insert. Could get the insert out with a needle nose plier but I assume this should be not normal operating procedure.
I guess quality could improve a little now I waiting for a response from PERKO for replacement. Hope the next one works better.
You may want to makes sure you have a needle nose plier in your rig.
Peter
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Old 10-24-2013, 07:58 PM   #11
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I found it took both hands to remove the lock. I used one finger to hold the lock body from turning while I tuned the key to release the lock and pull it out of filler. I didn't need tools just a little finesse.
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Old 10-24-2013, 08:20 PM   #12
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Did not pull hard just tried turning the key and pulling the locking cylinder came out then you have no choice then using a needle nose plier. I assume it is a manufacturing defect so much for Made in the USA.
Hope my second one will be OK still I will keep a needle nose plier in the rig.
Peter

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Old 10-25-2013, 09:59 PM   #13
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Quote:
Originally Posted by PSchw View Post
Did not pull hard just tried turning the key and pulling the locking cylinder came out then you have no choice then using a needle nose plier. I assume it is a manufacturing defect so much for Made in the USA.
Hope my second one will be OK still I will keep a needle nose plier in the rig.
Peter
Ouch! That doesn't look good.
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Old 10-26-2013, 05:58 PM   #14
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Just got mine today, and the tumbler mechanism came out of mine too while trying to remove the insert. I too had to use needle nose pliers to get the insert out. I'm not sure if I'm going to keep this because I don't want to be in a situation where I can't fill my fresh water tank. Very disappointed
David

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