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Old 06-23-2015, 06:36 PM   #1
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1978 Holiday Rambler

Hello everyone! We've recently purchased our awesome adventure machine a 1978 Holiday Rambler Imperial 5000.

Here is a video of us picking it up a few days ago!

Anyway I have a couple questions about these older rigs, mostly about the metal water storage. Does anyone know what type of metal it they are? AKA what the heck are they made of? I have not got a chance to mess around with it. There is no water in the tank,but when i turn the pump switch to "on" i hear what sounds almost like an air pump. about what time did the switch happen from air pump to a 12v motor pump?

so far it seems to be ok, there is some things that i missed when purchasing it. The furnace is missing... which is a bummer since we are going up to northern US. after summer and we might hit some cold.

Another odd thing is that most of the hot water lines have been capped off... Shower for sure. Why would that be? The water tank does not look at all rusty, and seems pretty clean on the outsides. (I know outside is completely different then inside, but shows some of the condition anyway)

Overall, there are some oddities that we have to take care of, but we love the fact that it is aluminum construction and in great shape for its age. Soon we will take a detail video tour of the interior and exterior and i will share it with you guys!

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Old 06-23-2015, 10:12 PM   #2
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Oh man what a beauty! I just picked up a '78 Class A Southwind and it was in nowhere NEAR as good condition! Good luck and have fun!

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Old 06-23-2015, 11:30 PM   #3
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Location: anywhere U.S.A, Currently back home in Thailand!
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Well, good luck with the HR! They were well made mh's! Not good to run the water pump dry, so I would put a little water in the tank thru the oustside fill, and turn the pump back on, it will pulse as it builds up pressure, then, if no leaks, will shut off, till you turn on the sink, then you will hear it pulse to keep up with the demand. You need to check the water heater, to make sure it is not in bypass mode, the valves should be behind the heater, and fill it up to. When filling it up open the pressure relief valve, till water comes out then close it, and turn off the pump! If all the hot water lines are capped off, that tells me the WH is probably bad, but you never know till you try it? The exhaust leak sounds like a doughnut gasket, between the manifold and the Y pipe? Keep your fingers crossed! It could be a cracked manifold? (hope not!) The overheating, losing 2 gallons of water could just be a stuck thermostat, as you said, or the radiator hoses or just a small leak. You did not say how long it had been sitting? I would also check the brakes, lines, and all things rubber! Is this beast a 460 cu in or a 351 cu in? Glad you got it home, or close to home anyway! Have fun! Keep us posted! Rail!
Oh yeah,,
Retired, and "Always on Holiday!"
1996 Monaco Windsor 38PB, "Mona" 275 HP., 8.3 Cummins, 3060 Allison 6 speed, 2001 PT Cruiser, "Bailey"
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Old 06-24-2015, 06:17 PM   #4
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sethhope - What are your plans with your new home? Looks awesome! All the best luck and don't get discouraged!

guardrail53 - Thanks for all of your input!! I will be spending time on the water system this weekend. Going through and figuring out what the heck is the deal with the hot water system, and figure out what type of water pump i have.
I was hoping that the exhaust leak was the gasket, but i am afraid it might have a cracked exhaust manifold. It is the 460 and from what i gather, it seems to be a common thing... The noise is from the (Looking under the hood) left side front. maybe the first or second piston. I don't want to mess with taking the manifold out because i understand that it will break all sorts of studs... A can of worms i am not looking to open right now. The breaks seem like they were replaced before sitting for about a year. Everything looks pretty new on them.

This weekend i am going to try to tackle a lot of things on it, Lots of small engine repairs, go through the water system, and some continue to check and recheck everything.

We have a lot of work to do in the next 60 days or so before we leave on a 6 month 10,000 mile trip across the US!
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Old 06-25-2015, 11:15 PM   #5
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Originally Posted by CoolRV View Post
sethhope - What are your plans with your new home? Looks awesome! All the best luck and don't get discouraged!
As far as plans go, I want to get the thing fixed up as best as I can. I intend to live out of it through college, so it needs to be in relatively good shape. Another thing on my RV bucket list is a trip around the US, starting near philly, heading northwest to Washington, then to florida, and finally home. I have a long way to go before I'm there though.
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Old 06-29-2015, 07:04 PM   #6
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Hello everyone, this last week has been rough for the Wanderlust tribe.
We lost one of our Boston terriers to congestive heart failure, and we have all been plagued with sickness.

With all that going on we still managed to get work done on the future adventure mobile.
Collectively we have about 16 hours total cleaning, diagnosing and fixing various problems on the old girl.

Turns out the thermostat was not stuck... Someone told me the radiator cap might me the cause. Who knows, we will continue to diagnose the issues and bring show everyone what we come across.


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