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Have to drop exhuast when removing heat shield for under passenger seat diesel heater install?

881 Views 33 Replies 9 Participants Last post by  phil
Hello great hive mind,
I am planning on installing a diesel heater under the passenger seat as so many people have also done. I've watched a lot of videos and everyone seems to skim over "just drop the heatshield" during the install videos/documentation.
I was expecting to just find the black plastic pins that you put wood screws into to pop up but found that I dont have those and everything is bolted in in a way that seems I'll also need to drop the exhaust for this procedure however I've never heard anyone mention that during install videos (or I'm maybe not paying enough attention?).

I have attached some pictures and circled the bolts and mounts holding the heat shield and the exhaust up that I believe need removed to get access to drill my hole under the seat and run the heater exhaust and intake hoses, fuel line, ect.. I would love some confirmation that I'm not too crazy here and that letting the exhuast dangle for a bit while I do this install shouldnt hurt anything. I got the van with 19k on it but I'm guessing someone had to drop the heatshield at one point and just bolted it back in since there are not any of the plastic pins holding that part in.
Anyway, thank you for any advice or confirmation on what I have pictured. I'm also happy to get more pictures if needed.
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Four bolts towards the middle of the van holding the exhaust and heat shield (the black push pin that is pictured is for a separate part of heatshielding)

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The mounting piece of hardware and bolt that is supporting the exhuast and holding in the heatshield. There is another single bolt on the right hand of the picture that is out of view but it looks the same. I couldnt get a pic with both bolts in it from under the van.

Tire Wheel Vehicle Automotive tire Tread

This seems to be the whole area that needs dropped. 4 bolts in the back and there are two bolts in the front. Those 6 seem to hold in the heat shield and the exhuast. Am I good to drop this all out while I'm doing the install or are there some precautions I should take with supporting the exhaust while it's unbolted from those mount points?

Thanks in advance! Hope this makes sense.
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MMXVI - L2H2 in Indiana
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If you mount the heater all the way to the left you don't have to drop the shield, mine is on left side and I didn't drop it.
 

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I pre-bent the exhaust pipe before installing the heater, it goes one side of the shield
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intake tube, wires and fuel line(in wire looms) go on the other side
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intake tube is looped around and tucked up above the shield so it stays clean
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MMXVI - L2H2 in Indiana
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If you want you can start to deconflict the heater and seat base (so each can be removed on their own), this is my oval hole (with the cutout covering the hole), you may have to move the hole forward to clear the rear bars.
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this block of wood levels me out and lift the heater, you don't need the heater blowing on bars, I pre-plumb the 3 hoses so all I need to do is tighten the hose clamps.
White Wood Gas Electrical wiring Auto part
 
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