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wtmtnhiker's avatar
wtmtnhiker
Explorer
May 05, 2017

Muffler needs replacing

I've been told my muffler and straps need to be replaced. The estimate for parts & labor will be about 1000.00. My question is is this a repair that a reasonably handy person with decent mechanical knowledge and skill could tackle on their own? Where would one source the parts? Normal parts store or online? It's a 2005 HR Ambassador with a Cummins 330 ISC engine.
  • I bought a new original replacement muffler from Newmar for about $425 & had a repair shop install it for about 150.00.
  • Update:
    I got all the part #'s on Donaldson web site then called them. They said they won't sell parts to me and that I'd have to go through one of their distributors which means I'll pay full list price. I'm going to try to find another source online.
  • About two years ago, I replaced mine myself on my 02 Dutch Star, Cummins 350 ISC, Spartan Chassis. I ordered the replacement muffler right from Spartan. I believe that I paid something like $175./$200. or something like that. I installed it myself. Only took about a 1/2 hour/45 minutes including removal of the old muffler. All my clamps and pipes were in great shape so removal and installation was easy.
  • wtmtnhiker wrote:
    Update:
    I got all the part #'s on Donaldson web site then called them. They said they won't sell parts to me and that I'd have to go through one of their distributors which means I'll pay full list price. I'm going to try to find another source online.


    Check out:
    RVCHASSISPARTS.COM
    (This is Spartan's parts site)
    Go to the "Exhaust Components" section

    The Part Number for my muffler was: 0334-LL1 (MUFFLER W/CUMM ISC ENGINE) Current online price today is $172.73. Not sure if that's the one that you need, but yours is an ISC so it likely is. You can call them with the last six digits of your VIN and they will verify. They also handle Freightliner parts as well.
  • I found a Donaldson muffler on Amazon for 196.00. I also need clamps, bands, and an elbow and extension. All tolled I'll spend 300.00 or so and it'll be about 10 days before I see anything.
  • Check around for a Fleet Pride store, they are very professional and will help you figure out what you need.
  • FIRE UP wrote:

    The job, start to finish, took me about 1/2-3/4 of a day and I was having fun doing it.

    Scott


    Oh goodness! There is something terribly wrong with the floor in your shop. Too clean. Way too clean. And Painted? I would feel obligated to sweep it almost every day!

    Seriously though, does that flaked paint floor chip when you use a floor jack and jackstands?

    I'd better not let my wife see that picture. She likes to point out oil drips and drops after each project I complete.
  • DryCreek wrote:
    FIRE UP wrote:

    The job, start to finish, took me about 1/2-3/4 of a day and I was having fun doing it.

    Scott


    Oh goodness! There is something terribly wrong with the floor in your shop. Too clean. Way too clean. And Painted? I would feel obligated to sweep it almost every day!

    Seriously though, does that flaked paint floor chip when you use a floor jack and jackstands?

    I'd better not let my wife see that picture. She likes to point out oil drips and drops after each project I complete.



    Hey Sir,
    Well, that floor was professionally done, about two weeks prior to us closing escrow. The house was brand new and so was the RV and two car garages, (obviously). I wanted that coating on there BEFORE anyone parked or drove on them. They did an outstanding job with Sherwin Williams Professional Epoxy Floor coating.

    Now, about the "chips". Well, it's a seriously tough floor. We've now been here for three years and I've only got about 3-4 chips in it, at various places. You gotta look hard to find them. When I put the jacks down for leveling, I place some special, 12" x 12" x 2" thick blocks under each jack. That helps spread the load and, protects the floor. I do the same when I'm using Jack stands. It's so routine now that I don't even think about it when I'm about to do some or, any, heavy work. And I've done a heck of a lot of heavy work.

    My floor jack has no effect on that floor. It rolls on it just fine and leaves no marks. Now, as for OIL AND GREASE etc. This is one primary reason I did this floor like this. I could pour the entire 19 quarts of used oil (black as could be) on it from the oil change on our Itasca Horizon C-7 330HP CAT and, it wouldn't even leave a mark. I've had a few mishaps and, when it's all wiped up, no one knows anything ever happened.

    As for "cleaning and or sweeping every day", well, I kind-a take pride of that floor. It does get mopped every week. I pull out the coach and the two cars and our Honda Goldwing and, do it with a commmercial bucket and mop. The whole operation, including putting everything back, takes me about an hour. No big deal. I've laid down on that floor to check something under the truck, Jeep, motor home, bike and fell asleep, a few times. No biggie.
    Scott







  • Final update,
    I didn't mention in my OP that the muffler was one of the reasons the motorhome failed a state inspection so I was compelled to deal with it. As previously stated I managed to get everything I needed from Amazon and my local parts store and the updated total cost is about 400.00 which is about a 600.00 savings over what the shop was going to charge. When I had everything removed I carefully checked the muffler for the whole I was told was there. Lo and behold there was none, just a glitch in the seam weld that was not letting any exhaust escape. In the end all I really should have had to get was a couple of straps, and an elbow at the outlet. Not sure whether an honest mistake was made or they intended to sell me something I didn't need. I took it in and got it rechecked and the inspection sticker. I told the manager that there was no hole but he wasn't very helpful and didn't want to hear it. Not sure how far I'll take it but for sure they won't get another cent of my business.