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Topic: Tag axle/bedroom floor (Read 611 times) previous topic - next topic

Tag axle/bedroom floor

Last trip I took last year I was parked in a weird spot, and the right tag axle tire must have been on a hump, as the coach settled down, the tire pushed up the bedroom floor directly above it. I think I remember reading about that on here before, but I can't find it with the search function. Before I tear into that, what's all between the tire and the interior? Just a plywood subfloor with some insulation and a thin metal plate under? Wondering how big of a surprise that is going to be.
1999 U320 4200 DGFE

Re: Tag axle/bedroom floor

Reply #1 –
Quote from: Dbraskett –
Last trip I took last year I was parked in a weird spot, and the right tag axle tire must have been on a hump, as the coach settled down, the tire pushed up the bedroom floor directly above it. I think I remember reading about that on here before, but I can't find it with the search function. Before I tear into that, what's all between the tire and the interior? Just a plywood subfloor with some insulation and a thin metal plate under? Wondering how big of a surprise that is going to be.

Fill in your signature so everyone knows the year and make. After the repair add a plate to the underside so the tire will span it and not the wood.

Re: Tag axle/bedroom floor

Reply #2 –
Did I read right in that the tire actually broke the bedroom floor loose?
Dub McBride 1996 270

Re: Tag axle/bedroom floor

Reply #3 –
Quote from: Dub –
Did I read right in that the tire actually broke the bedroom floor loose?
Yes. I walked back there and noticed it was pushed up, went outside and looked, the tire was jammed up against the coach. Aired it up and the floor went back flat.
1999 U320 4200 DGFE

Re: Tag axle/bedroom floor

Reply #4 –
Quote from: DavidS –
Fill in your signature so everyone knows the year and make. After the repair add a plate to the underside so the tire will span it and not the wood.
I thought I filled that out already, I'll go add it. But it's a 99 U320, 4200
1999 U320 4200 DGFE

Re: Tag axle/bedroom floor

Reply #5 –
Quote from: Dbraskett –
Yes. I walked back there and noticed it was pushed up, went outside and looked, the tire was jammed up against the coach. Aired it up and the floor went back flat.
I know nothing about tag axles coaches, BUT, that don't seem right.  I would expect a mechanical stop of some kind in the suspension linkage to prevent this from ever happening.

MIght be worthwhile to have the tag axle undercarriage inspected for damage or a broken component?
1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Nature abhors a vacuum"

Re: Tag axle/bedroom floor

Reply #6 –
I agree that there must be a suspension failure.  I've driven that same model coach for 165,000 miles without seeing anything like this.
Regards,
Brett

'99 42' Foretravel Xtreme
'14 Brown Motorsports Stacker
'05 Chevy SSR
'02 BMW R1150R

Re: Tag axle/bedroom floor

Reply #7 –
I have owned a bunch of coaches with tags and this is a first. Please take some photos. I would be very concerned if when you aired the coach back up you could actually push the floor back down. There seems to be a large compromise in structural integrity.

Re: Tag axle/bedroom floor

Reply #8 –
IIRC the stop is in the airbags themselves.  I wonder if there was some kind of internal failure.  My tag axle bag actually separated on the bead plate which started my airbag project many years ago.