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61  Main Forum / General Discussion / Re: Drive line vibration diagnosis on: October 14, 2013, 05:52:20 pm
Here are the pictures the service manager sent me looking fore and aft.  There does appear to be a definite cast to starboard.


62  Main Forum / General Discussion / Drive line vibration diagnosis on: October 14, 2013, 05:38:05 pm
OK, it's taken a while to get my 58-62mph vibration issue diagnosed.  To recap:  The first try was to get all 6 tires balanced.  The improvement was slim although the tire company told me all 6 tires were out of balance (cost $15/tire)  I took it back to the tire company to see if this was the best they could do and took a run with a mechanic.  He diagnosed it as a suspected driveline issue not the tires.  The recommendation was to take it to Ford and try to get it fixed under warranty.  If that didn't work, bring it back and they would locate the vibration with a sensor machine. 

I finally got it into the Ford dealership and they drove it and rebalanced and indexed the tires and told me it was fixed (cost $0).  I picked it up and drove it to the nearest highway and it rode smoother due to a little better balance job, but the vibration was still there.  I drove back to the Ford dealership and complained and a service manager agreed to take a ride with me.  Once I got the PC up to 60 mph, he heard/felt the vibration right away and he tried to locate it.  He said it was worse behind the transmission.  He asked me to leave it until he could look at it on a rack.  They only have one truck rack and it was in use so it sat a few days. 

Today he called and said it was as fixed as good as he could get it.  The problem, according to him, is the driveline is not straight because the factory added coupler is off center by 1/2".  The added coupler is about 1/2" off center towards the passenger side and this is causing my problem.   I asked if he could just slide the coupler 1/2" towards the center of the vehicle and he said, no, the adjustment on this particular bracket is fore and aft, not sideways.  I asked if he could grind the bracket holes out so the coupler could be slid to the center and he said no, there is only about 3/8" of metal on the edge of the existing hole and there is no room to grind.  He thinks the only way to fix it properly is to cut the welded bracket off and then weld it back in the right place.

He attempted to fix the problem by shimming the coupler down.  He tried 5 shims and it got best at 3 shims and then got much worse by 5 shims.  He went back to 3 shims.  He thinks it's about 50% better (Cost $0, thank you very, very much).

He also said an out of line driveline is consistent with the vibration ramping up and then ramping down as speed increases.  If the shaft was out of balance, he said it would ramp up and up and keep getting worse as speed increased.

He doesn't have the equipment to fix it and recommended I take back to the factory if I can't live with it.  Since I bought it used, I don't have a warranty and it's a 2500 mile roundtrip so that solution is out of the question.  His second recommendation was to take it to someplace like camper's world and see if they could tackle it.   He is going to send me pictures and if it shows the problem, I'll post them up here.  I'll also contact Earl and see if he has any pearls of wisdom.  Mark
63  Main Forum / General Discussion / Re: ENGINE COWLING on: October 09, 2013, 11:22:46 pm
I always keep my office windows closed (and on my vehicles too). 
64  Main Forum / General Discussion / Re: ENGINE COWLING on: October 09, 2013, 01:57:55 pm
To make my experiment as scientific as possible (and not spend much money), I bought a $1 app for my iphone that measures sound levels.  I doubt it is accurate but it does give me relative differences.  The sound level in my office is about 47-48 dB.  The sound level in my f150 at 70 mph is 53-54 dB.  The sound level in my 2552 at 62-64 mph is 57-58 dB peaking at 60 dB.  Perceived loudness is doubled every 10 dB, so my f150 at 70 mph is about 50% louder than my office and my 2552 is twice as loud and my ears pretty much agree to what the meter is showing me.  I have to speak above my normal voice level for my wife to hear me when I am driving the PC and she is in the passenger seat.  The noise level becomes fatiguing after a while.  Much of the noise is wind on the cap, windscreen, and mirrors, but the engine contributes a lot too.  I'm very curious to see if insulating the doghouse with a premium insulation product will help.  There are several threads that say it helps, but it's all speculation about how much.

I sent Hushmat and Dynamat emails and asked them which product I should use inside the cowling.  They have both responded but I haven't had time to evaluate either product.  Hushmat recommended removing the existing insulation on the doghouse and chucking it (my words).  Dynamat also sells an exhaust wrap.  I found a thread on it and one user was very happy with it on his 450 van which I think is a diesel (Does Ford make a diesel 450?).  I also found a post where a user applied Dynamat to both the inside and outside base of the doghouse.  He was going to add carpet or some other flooring over it to protect the interior application.  He said he had extra Dynamat after covering the floor and doghouse and just wanted to use it up.

I'll be purchasing one of these products soon and will post up my results, but it may be a month or two b/f I'm done.
65  Main Forum / General Discussion / 2006 2551 offered in Mobile AL on: October 02, 2013, 08:24:34 am
For anyone interested, I came across a craigslist ad for a "wide body" 2006 2551 with "fiberglass front and end caps" in Mobile AL.  Please delete if this violates the rules.  Mark
66  Main Forum / General Discussion / Re: Rubber Floor Mat on: September 30, 2013, 08:33:31 am
When I heard about this mat, I was anxious to get to my Ford dealer to order it.  However, looking at the pictures, I see this is what is already installed in my 2013 2552.  Interesting.   I may pull it up and see if I can add some insulation under it or put something else on top.

I pulled the cowling yesterday and there is a foil backed insulation product attached to the inside of the doghouse.  It looks like there is plenty of room to add more insulation except maybe near the exhaust.  I think this will be my first project.
67  Main Forum / General Discussion / Re: ENGINE COWLING on: September 30, 2013, 08:27:46 am
I pulled mine off yesterday to see about adding some insulation.  It slides back easily enough.  Be careful about pulling on the cup holder for leverage.  The cup holder section is a drop in held by adhesive caulk.  On mine the adhesive didn't bond and I snapped one of the 2 seating tabs (that did bond) when I lifted the cowling and the holder popped off.  The view under the cowling shows you just how little separates you from the engine, transmission and pavement!
68  Main Forum / Photos / Oak Mountain State Park near Birmingham AL on: September 29, 2013, 10:35:34 pm
Camping at Oak Mountain State Park near Birmingham, AL.

<untitled> NG7A22322013-09-2828 by
69  Main Forum / General Discussion / Re: Rubber Floor Mat on: September 25, 2013, 08:42:12 am
Thanks for posting this.  I'm taking my PC to the Ford dealer next week to investigate my vibration and I'm going to see if he can order this mat for me.  I'm also going to see about insulating the doghouse and see if I can make the inside a little quieter when running down the road. Mark
70  Main Forum / Polls / Re: Any pets travel with you? on: September 24, 2013, 10:59:27 am
Our dogs were a primary driver in getting an RV.  We frequently travel on long weekends to dog trials with Winston and Griffin, our Glen of Imaal terrors (no misprint), to earthdog, agility, obedience, tracking, rally, and barnhunt events.  No, you probably have never heard of a Glen of Imaal terrier as they are the 157th least popular akc breed.  We like to say our dogs are better behaved than 99% of children we meet.  They are used to traveling and Winston generally rides shotgun.  He finds the captain chair is to his liking.  We don't crate them during travel based on the controversial thinking that if we are in a severe accident and they are ejected, being crated probably won't save them.  Mark
71  Main Forum / General Discussion / Re: What is in the box between the propane tank and the frame? on: September 24, 2013, 10:46:43 am
Bob commented that he thought the box by the propane tank was the HWH leveler system.  On my unit, I don't think that is right because it was all lit up with 5 or 6 leds and I didn't have the leveler system turned on.  I only noticed the lights on when I was running the generator and thought perhaps this was the transfer switch and the led's somehow indicate what the power source is.  Mark
72  Main Forum / General Discussion / Insulating the doghouse on: September 23, 2013, 06:26:59 pm
I did a search on insulating the cab floor and doghouse and didn't find much.  Has anyone tried lining the doghouse with hushmat or a similar sound/heat insulation material?  It's pretty noisy in the cab area especially when the tranny downshifts at high rpms.  Thanks, Mark
73  Main Forum / General Discussion / Another sani con tank flushing question on: September 23, 2013, 06:24:20 pm
Thanks for advice here, I hosed down my black water tank with city water hooked up on the sani con panel.  After one rinse, the black water tank now reads empty instead of 1/3 full when it's empty.  Thank you.

On the sani con panel there is also a button for the coach water pump.  I assume if I open the rinse valve and hit this pump button, I'll flush the tanks with onboard water?  Thanks, Mark
74  Main Forum / General Discussion / Re: What is in the box between the propane tank and the frame? on: September 23, 2013, 06:16:24 pm
I was told to hold the remote start/stop button in the stop position, light comes on, and then move the switch to the start position when the light goes out.  On the first attempts, it will start or try to start and after a few seconds, stop.  I'll tinker with priming it a little bit longer.  I hate to run the starter any longer than necessary.

I found the altitude adjustment and it is properly set at sea level.  I also accidently hit the start button on the genset when wiping up excess oil.  It was unexpected and scared the $%#& out of me!

The box on the other side of the propane tank is not the leveling system.  It was all lit up when the levelers were not activated.  These motorhomes have a lot of parts!  Mark
75  Main Forum / General Discussion / Re: Vvvvvvvvvvibration Noise on: September 23, 2013, 06:06:53 pm
I have a vibration in my 2552 that I can feel and hear in the seat of my pants b/w 60 and 65 mph.  I had the tires balanced and it didn't help.  Today, I had a mechanic from the tire store (they do brakes, exhaust and other work) ride with me and he moved around the cabin as I drove.  He isolated the vibration to the front of the vehicle and he thinks it is a driveline issue.  The recommendation is to take it to my ford dealer and let him troubleshoot it.  I'll work on that next week.  He continued to say that if I can't get satisfaction from the ford dealer (hopefully under warranty), bring it back and they had a mechanic that would hookup sensors to the underbelly and he would monitor the vibration on a computer as it was driven.  If they can do it here in podunkville, they can do it where you live.  Maybe something to check out.  Mark
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