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Old 11-28-2010, 06:21 PM   #1
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gas line road clearance

Recently acquired a 66 Caravel. I was underneath it trying to get an idea of how to remove some of the belly skin (still not sure) to access some floor rot when I noticed the gas line had less than 7 inches of road clearance where it passes around the axle. Am I mistaken in thinking that it's kind of vulnerable? Are they all like that?
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Old 11-28-2010, 06:29 PM   #2
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My gas lines passed under the axles against the belly pan. i think someone has replaced yours improperly.
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Old 11-28-2010, 06:49 PM   #3
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Mine go under my axles. Plenty of clearance. Sounds like that you need to replace those old axles. The torsion rubber has 'collapsed'.
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Old 11-28-2010, 07:09 PM   #4
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I always wondered why airstream didnt hide those gas lines inside the belly pan? Its not like you ever have to service them? I find it strange that even on my classic the lines are just screwed to the lower skin.
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Old 11-28-2010, 08:01 PM   #5
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I always wondered why airstream didnt hide those gas lines inside the belly pan? Its not like you ever have to service them? I find it strange that even on my classic the lines are just screwed to the lower skin.
LPG lines must be exposed as per RVDA.

Reduces the chance of an explosion.

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Old 11-28-2010, 08:04 PM   #6
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I always wondered why airstream didnt hide those gas lines inside the belly pan? Its not like you ever have to service them? I find it strange that even on my classic the lines are just screwed to the lower skin.
Also, no other fittings are permited inside the coach except at the appliance, meaning no "T's" as an example.

Some shops have "Teed" into an LPG line inside the coach for a LPG lamp.

NO NO.

It's against the code.

Andy
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Old 11-28-2010, 08:06 PM   #7
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Ok... but there is a considerable amount of line inside the trailer aswell. So this rule would then apply to all RV's.. any make or model. I didnt know that. I know that my Winnebago had a tank underneath and the lines quickly went up into the coach.

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Old 11-28-2010, 08:18 PM   #8
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pictures

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Originally Posted by uncledan View Post
Recently acquired a 66 Caravel. I was underneath it trying to get an idea of how to remove some of the belly skin (still not sure) to access some floor rot when I noticed the gas line had less than 7 inches of road clearance where it passes around the axle. Am I mistaken in thinking that it's kind of vulnerable? Are they all like that?
Here are pictures of the gas line I meant to include
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Old 11-28-2010, 08:51 PM   #9
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Here are pictures of the gas line I meant to include
The LPG line location in your photo should be immediately corrected.

It most certainly is way way out of position.

Part of the reason Airstream installed the LPG line over the axle tube was because of the short axle mounting bracket.

One inch was added to the axle mounting bracket height starting with the 1969 models, which then provide adequate clearance to install the LPG lines under the axle tube, near each side of the frame.

By the way, it appears from your photo, that you should check your axle out, as it seems that the rubber rods may have failed.

The Dura-Torque Axle

Andy
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Old 11-29-2010, 10:04 AM   #10
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good eye

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The LPG line location in your photo should be immediately corrected.

It most certainly is way way out of position.

Part of the reason Airstream installed the LPG line over the axle tube was because of the short axle mounting bracket.

One inch was added to the axle mounting bracket height starting with the 1969 models, which then provide adequate clearance to install the LPG lines under the axle tube, near each side of the frame.

By the way, it appears from your photo, that you should check your axle out, as it seems that the rubber rods may have failed.

The Dura-Torque Axle

Andy
Thanks Andy
The guy who sold the Caravel to us suggested we might want to get the axle replaced due to its age, so I kinda thought that might be on the to do list.

So the gas line should be rerouted to go between the axle and the belly skin?
And what did you spot on the picture that gave away the fact that the axle might need replacing?
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Old 11-29-2010, 10:25 AM   #11
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Thanks Andy
The guy who sold the Caravel to us suggested we might want to get the axle replaced due to its age, so I kinda thought that might be on the to do list.

So the gas line should be rerouted to go between the axle and the belly skin?
And what did you spot on the picture that gave away the fact that the axle might need replacing?
The new axles will allow the LPG line to go on top of the square tube, because of the one inch increase in it's height.

The position of the "torsion arm" tells the condition of the rubber rods. If it's parallel to the chassis or the rear end of the torsion arm is going uphill, then that says that the rubber rods have deteriorated to the degree that they are no longer doing the job that they must do for a torsion axle.

The result of failed rubber rods, is that the trailer will bottom out when hitting bumps. That has a large negative effect on the shell and the contents of the trailer.

The exception being when the weight is removed from the tire. The tire should drop about 3 inches, telling you that the rubber rods are ok.

Many posts on this Forums, from other owners, will bear that out.

Andy
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Old 12-01-2010, 04:16 PM   #12
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Thank you Andy

Can any place that works on trailers replace the axle or should it be an Airstream dealer?
Is replacing/rerouting the gas line something I could try to tackle myself or is it something best left to a professional?
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Old 12-01-2010, 04:44 PM   #13
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Thank you Andy

Can any place that works on trailers replace the axle or should it be an Airstream dealer?
Is replacing/rerouting the gas line something I could try to tackle myself or is it something best left to a professional?
Changing out the axle, in your case, would require a drill, a 1/2 inch drill bit and a couple of wrenches.

The shock mounting brackets can be welded in place before the axle is lifted into place.

You may find the copper LPG lines have annealed, as they usually do in time. You can easily replace all those lines, if you so chose.

You would need a jack, 2 jack stands, and a helper to lift the new axle in place.

Andy
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Old 12-01-2010, 05:11 PM   #14
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I replaced the axle on my 65 Safari and purchased it from Andy. It was not too hard of a job. It took me half a day. I did have to drill a couple of new holes in the mounting bracket but that was not too bad. I jacked up the trailer and used two car jacks to position the new axle. Toughest part of the job for me was getting the old bolts out. A torch would have made that part a snap. Bottom line is the trailer gained about 3 inches of clearance and rides so smooth that a coffee cup did not even slide off the kitchen cupboard after 50+ miles. I did run my gas line up and over the new axle....Tim
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