rvupgradestore.com Composet Products Fridge Defend
RV Life Magazine RV Park Reviews RV Trip Wizard

Author Topic: Swapping LP hoses - exterior tank  (Read 129 times)


  • Admin assist
  • ---
  • *
  • Posts: 8197
  • Central IL
Swapping LP hoses - exterior tank
« on: June 29, 2020, 11:02:05 PM »
Several months ago (last Fall actually) I bought this pair of LP hoses because one of the originals on my trailer was leaking and had drained the LP tank. Due to COVID, we are getting a late start to our camping season and are heading out this week. I've been trying to get the new hoses installed on the existing regulator, but the original hose WILL NOT come loose. I've sprayed PB Blaster in the threads, worked it with a wrench, tapped/banged on it with a hammer, and the connection won't budge. I'm reluctant to whack on it too hard because the regulator is plastic (and 12yo plastic at that) and I'm afraid it's going to break. Any ideas on what else to try?

Yes, I now agree that I should have bought the entire assembly like this in the first place, and I wouldn't be having this problem. I didn't anticipate this difficulty. (Actually I just ordered one and am having it shipped to the campground, since it will arrive the same day we do. :)) I'm still interested in getting these original hoses off and keeping that regulator as a backup.
Scott, wife, 3 boys... and the dog
- 2008 Forest River Wildwood 32BHDS
- 1995 Chevrolet Suburban C2500 tow vehicle
- 1994 Thor Residency motorhome... owned 2007-2012


  • ---
  • Posts: 150
Re: Swapping LP hoses - exterior tank
« Reply #1 on: June 29, 2020, 11:18:56 PM »
I don't know about American propane, but in the UK, a lot of propane threads are left handed and are identified by the nut having small cuts in the hex.

Rene T

  • Forum Staff
  • ---
  • *
  • Posts: 15211
  • Every day is payday and every payday I have off
Re: Swapping LP hoses - exterior tank
« Reply #2 on: June 30, 2020, 03:41:57 AM »
Look at the threads of the new hose. They should be right hand threads. If they are, put a bigger wrench on it. Remember, righty righty, lefty loosely.
Rene, Lucille & co-pilot Buddy
AKA  Pep N Mem
2011 Chevy Duramax 2500 HD 4X4
2011 Montana High Country 343RL
From the Granite State of NH
& Florida Snowbird in Lakeland FL


  • ---
  • Posts: 258
  • Dan from Dayton...
Re: Swapping LP hoses - exterior tank
« Reply #3 on: June 30, 2020, 08:54:20 AM »
Based on the photos there is nothing unusual about those connections - Bigger wrenches. I would rarely recommend a crescent wrench but in this case you might need to.

Alternately a crows foot flare nut wrench and a breaker bar would be the appropriate tool...
"Marvin" - 1996 Georgie Boy Pursuit 3150 - P30 Chev 454
Various classic MGBs
Ex-liveaboard boater - Class A newbie in sponge mode