Under Dash Panel Hinge

bartz paul

New member
Dec 3, 1997
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Gene:

The only thing I have reservations about if using a hinge, is fear that with
time, vibrations from driving will overstress the soft plastic material of
the instrument panel enclosure due to the suspended weight of the under dash
panel. As a result, the hardware used to secure the top left and right
sides of the under dash panel will strip out. Otherwise, why did GM go to
the trouble of providing the channel to the right of the steering column for
the top tabs of the panel to fit into???

Did you just drive the top screws into the soft plastic??

What did you use to grind the glass??

Paul Bartz

From: JDDP32B [mailto:JDDP32B]
Sent: Thursday, September 09, 1999 8:00 PM

I used brass flat head screws (to match the hinge) with washers and nuts on
the glass side. I think when I am finished I will put a strip along the
outside of the panel to make a sandwich of the glass. There are a lot of
screws but worry in time there would be a lot of stress from the bolts on
the glass. It would not show since it is on the bottom. On the dash side,
so far I have just used the original two mounting bolts to hold the hinge to
the dash support strip. They were a perfect fit to the hinge.
To get started, I mounted the hinge with two bolts and just aligned it with
the edge of the glass panel. As I ground and ground and ground away the
glass. I moved the right side out a little by drilling a new hole. I say
this, because I had a real hard time trying to decide how to start aligning
the panel. good luck and send me pictures as you go along.

gene
Date: Thursday, 09-Sep-99 11:17 AM
From: Bartz Paul \ Internet: (s9d3452
)

Gene:
What kind of fastener hardware, including type of head, did you use to
secure the hinge to the panel??
Haven't tried to layout yet, but so far, the items I hope to locate on my
panel are: lights: TBI check engine, low oil pressure warning: switches:
driving, road, docking, floor, and ceiling lights, horn; and gauges: oil,
transmission fluid, and differential temperature, battery meter.
From: JDDP32B
[mailto:JDDP32B]
Sent: Tuesday, September 07, 1999 8:00 PM

Yes the hinge has great support and was very close to a direct fit from the
metal brace at the bottom of the dash to the bottom of the under dash panel.
I agonized for several days about those tabs..... and finally I decided to
cut them off. I have a thumb screw on the right and one one the left of the
new panel and that seems to hold it up tight. We will see when I get it
loaded. The tabs also seem to be in the way of switches I might want to put
up there.
Have you figured out what gauges and where you are going to put them ??
Date: Wednesday, 08-Sep-99 05:28 PM
From: Bartz Paul \ Internet: (s9d3452
)

Gene:
In looking at subject pictures on your web site, I see you've used a piano
hinge, which I like, to secure the bottom of the panel. To the right of the
steering column, on the bottom of the instrument panel, there is a small
channel in which you fit the tab of the under dash panel into. That
requires an upward movement to fit it into place. I'm assuming you
eliminated that feature with your hinge arrangement??
If not, please explain how you accomplished.
 
Gene:

I believe the vent louver (for the left side, right side is smaller size) is
still available, new. Got some from Zeb Frady in 1996.

Paul

From: JDDP32B [mailto:JDDP32B]
Sent: Thursday, September 09, 1999 8:00 PM

Nope I used the existing mounting holes just for that reason. There are two
on the right side that are below the AC vent and they are in hard plastic
used to mount the original panel. They were in a great position , since I
was able to come up under the glass panel and the screws did not show.
On the left, I used the existing mounting hole by placing an eye bolt into
the side of the new glass panel . I did not like the looks of this last
one, but I wanted a hold down that would have some adjustable tension for
how hard I held up the panel. The thumb screw went through the eye bolt
into the existing reinforced mounting hole in the dash.
To work the glass, I used one of those flexible abrasive disks in my
electric drill. Worked great because could cut off or sand with the side.
They are very thin about 1/16 of an inch thick. Took a lot of fitting and I
am not sure I am done yet. There comes a time when I want to get on with
the project and stop fitting. I got the AC vents from the wrecking yard,
found lots of them their and I picked the best ones. I was glad I took my
old one with me, since there were a lot of them that looked alike but were
a little different. I did not want to use the old ones, because I thought
someone might want the old dash panel.

Date: Friday, 10-Sep-99 09:49 AM
From: Bartz Paul \ Internet: (s9d3452
)

Gene:
The only thing I have reservations about if using a hinge, is fear that with
time, vibrations from driving will overstress the soft plastic material of
the instrument panel enclosure due to the suspended weight of the under dash
panel. As a result, the hardware used to secure the top left and right
sides of the under dash panel will strip out. Otherwise, why did GM go to
the trouble of providing the channel to the right of the steering column for
the top tabs of the panel to fit into???

Did you just drive the top screws into the soft plastic??
What did you use to grind the glass??
From: JDDP32B
[mailto:JDDP32B]
Sent: Thursday, September 09, 1999 8:00 PM

I used brass flat head screws (to match the hinge) with washers and nuts on
the glass side. I think when I am finished I will put a strip along the
outside of the panel to make a sandwich of the glass. There are a lot of
screws but worry in time there would be a lot of stress from the bolts on
the glass. It would not show since it is on the bottom. On the dash side,
so far I have just used the original two mounting bolts to hold the hinge to
the dash support strip. They were a perfect fit to the hinge. To get
started, I mounted the hinge with two bolts and just aligned it with the
edge of the glass panel. As I ground and ground and ground away the glass.
I moved the right side out a little by drilling a new hole. I say this,
because I had a real hard time trying to decide how to start aligning the
panel. good luck and send me pictures as you go along.
Date: Thursday, 09-Sep-99 11:17 AM
From: Bartz Paul \ Internet: (s9d3452

)

Gene:
What kind of fastener hardware, including type of head, did you use to
secure the hinge to the panel??
Haven't tried to layout yet, but so far, the items I hope to locate on my
panel are: lights: TBI check engine, low oil pressure warning: switches:
driving, road, docking, floor, and ceiling lights, horn; and gauges: oil,
transmission fluid, and differential temperature, battery meter.

From: JDDP32B

Sent: Tuesday, September 07, 1999 8:00 PM

Yes the hinge has great support and was very close to a direct fit from the
metal brace at the bottom of the dash to the bottom of the under dash panel.
I agonized for several days about those tabs..... and finally I decided to
cut them off. I have a thumb screw on the right and one one the left of the
new panel and that seems to hold it up tight. We will see when I get it
loaded. The tabs also seem to be in the way of switches I might want to put
up there.
Have you figured out what gauges and where you are going to put them ??
Date: Wednesday, 08-Sep-99 05:28 PM
From: Bartz Paul \ Internet: (s9d3452
)

Gene:
In looking at subject pictures on your web site, I see you've used a piano
hinge, which I like, to secure the bottom of the panel. To the right of the
steering column, on the bottom of the instrument panel, there is a small
channel in which you fit the tab of the under dash panel into. That
requires an upward movement to fit it into place. I'm assuming you
eliminated that feature with your hinge arrangement?? If not, please
explain how you accomplished.
 
Gene

What year coach do you have? and did you replace just the section under the
steering wheel or more of the dash? Are you ducting more AC into the drivers
area (yea!) or replacing what you already had?

Wayne Newland F9300 75 Palm Beach Columbia, Md.

> -- [ From: Eugene Fisher * EMC.Ver #3.1a PRODIGY ] --
>
> nope I used the existing mounting holes just for that reason. There are
> two on the right side that are below the AC vent and they are in hard
> plastic used to mount the original panel. They were in a great position
> , since I was able to come up under the glass panel and the screws did
> not show.
> On the left, I used the existing mounting hole by placing an eye bolt
> into the side of the new glass panel . I did not like the looks of this
> last one, but I wanted a hold down that would have some adjustable
> tension for how hard I held up the panel. The thumb screw went through
> the eye bolt into the existing reinforced mounting hole in the dash.
>
> To work the glass, I used one of those flexible abrasive disks in my
> electric drill. Worked great because could cut off or sand with the
> side. They are very thin about 1/16 of an inch thick. Took a lot of
> fitting and I am not sure I am done yet. There comes a time when I want
> to get on with the project and stop fitting. I got the AC vents from
> the wrecking yard, found lots of them their and I picked the best ones.
> I was glad I took my old one with me, since there were a lot of them
> that looked alike but were a little different. I did not want to use
> the old ones, because I thought someone might want the old dash panel.
>
> gene
>
> -------- REPLY, Original message follows --------
>
> Date: Friday, 10-Sep-99 09:49 AM
>
> From: Bartz Paul \ Internet: (s9d3452
> )
> To: gmclist \ Internet: (gmcmotorhome
> .org)
>
> Attachment: mimemsg.doc Code: 09E833H \ Created: Unknown [5 Kb]
>
> Subject: RE: GMC: Under Dash Panel Hinge
>
> Gene:
>
> The only thing I have reservations about if using a hinge, is fear that
> with time, vibrations from driving will overstress the soft plastic
> material of the instrument panel enclosure due to the suspended weight
> of the under dash panel. As a result, the hardware used to secure the
> top left and right sides of the under dash panel will strip out.
> Otherwise, why did GM go to the trouble of providing the channel to the
> right of the steering column for the top tabs of the panel to fit into??
> ?
>
> Did you just drive the top screws into the soft plastic??
>
> What did you use to grind the glass??
>
> Paul Bartz
>
> From: JDDP32B [mailto:JDDP32B]
> Sent: Thursday, September 09, 1999 8:00 PM
>
> I used brass flat head screws (to match the hinge) with washers and
> nuts on the glass side. I think when I am finished I will put a strip
> along the outside of the panel to make a sandwich of the glass. There
> are a lot of screws but worry in time there would be a lot of stress
> from the bolts on the glass. It would not show since it is on the
> bottom. On the dash side, so far I have just used the original two
> mounting bolts to hold the hinge to the dash support strip. They were a
> perfect fit to the hinge. To get started, I mounted the hinge with two
> bolts and just aligned it with the edge of the glass panel. As I ground
> and ground and ground away the glass. I moved the right side out a
> little by drilling a new hole. I say this, because I had a real hard
> time trying to decide how to start aligning the panel. good luck and
> send me pictures as you go along.
>
> gene
> Date: Thursday, 09-Sep-99 11:17 AM
> From: Bartz Paul \ Internet: (s9d3452
> )
>
> Gene:
> What kind of fastener hardware, including type of head, did you use to
> secure the hinge to the panel??
> Haven't tried to layout yet, but so far, the items I hope to locate on
> my
> panel are: lights: TBI check engine, low oil pressure warning: switches
> :
> driving, road, docking, floor, and ceiling lights, horn; and gauges: oil
> ,
> transmission fluid, and differential temperature, battery meter.
> From: JDDP32B
> [mailto:JDDP32B]
> Sent: Tuesday, September 07, 1999 8:00 PM
>
> Yes the hinge has great support and was very close to a direct fit from
> the
> metal brace at the bottom of the dash to the bottom of the under dash
> panel.
> I agonized for several days about those tabs..... and finally I decided
> to
> cut them off. I have a thumb screw on the right and one one the left of
> the
> new panel and that seems to hold it up tight. We will see when I get it
> loaded. The tabs also seem to be in the way of switches I might want to
> put
> up there.
> Have you figured out what gauges and where you are going to put them ??
> Date: Wednesday, 08-Sep-99 05:28 PM
> From: Bartz Paul \ Internet: (s9d3452
> )
>
> Gene:
> In looking at subject pictures on your web site, I see you've used a
> piano hinge, which I like, to secure the bottom of the panel. To the
> right of the steering column, on the bottom of the instrument panel,
> there is a small channel in which you fit the tab of the under dash
> panel into. That requires an upward movement to fit it into place. I'm
> assuming you eliminated that feature with your hinge arrangement?? If
> not, please explain how you accomplished.
>
> -------- REPLY, End of original message --------
>
> Gene 76Palm Beach /Or/CA
>
> GMC Technical Information
> http://www.california.com/~eagle/