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#385653 - 03/14/17 12:12 PM Heater installation in my 1936 truck
35Mike Offline

1500

Registered: 08/19/04
Posts: 1731
Loc: Columbia, MO
A year or so ago I completed the installation of a heater in my truck. It is a genuine Chevy accessory as pictured in the 1936 literature. It shakes horribly from side to side to the extent that I'm afraid it will break the firewall at the bolts.
I am in the process of adding a 1936 Delco radio to my truck. It is much heavier than the heater. Am I going to have the same problem with the radio? Did one or both of these have a reinforcement plate as part of the original install kit?
Any suggestions?

Mike


Edited by 35Mike (03/14/17 12:23 PM)
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#385661 - 03/14/17 01:52 PM Re: Heater installation in my 1936 truck [Re: 35Mike]
Chev Nut Offline




Registered: 01/08/02
Posts: 24109
Loc: West Allis,Wi.
The same heater is listed for cars and trucks. The parts book lists no special rienforcement for mounting in trucks.
If you have it mounted evenly and the firewall flexes that much I would think you could place a rienforcing plate between the heater and firewall and it would be mostly invisable.
For the radio mounting in a 1934 passenger car they show a big piece of plywood mounted to the front of the firewall in the engine compartment. Seeing Chevrolet did not offer a radio for 1936 trucks, if you do mount a radio in that manner some type of rienforcement or steady bracket will have to be engineered.
Good luck
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#385672 - 03/14/17 04:37 PM Re: Heater installation in my 1936 truck [Re: Chev Nut]
35Mike Offline

1500

Registered: 08/19/04
Posts: 1731
Loc: Columbia, MO
I always assumed that those oversized star washers, that you always see on the radio box mounting studs, were to assure a good ground for the unit. If a hunk of plywood is recommended, it would disprove my theory.
Does anyone know the size of this plywood?

Mike
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#385673 - 03/14/17 04:57 PM Re: Heater installation in my 1936 truck [Re: 35Mike]
Chev Nut Offline




Registered: 01/08/02
Posts: 24109
Loc: West Allis,Wi.
The instructions are in a 1934 Service News.
I can not find my 1934 S.N. at the moment but perhaps some one else will email you the info. I don't remember just what month it was in.
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#385684 - 03/14/17 08:06 PM Re: Heater installation in my 1936 truck [Re: Chev Nut]
35Mike Offline

1500

Registered: 08/19/04
Posts: 1731
Loc: Columbia, MO
Thanks, Gene.
Any thoughts on my heater flopping from side to side?

Mike
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ml.russell@mchsi.com

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#385694 - 03/15/17 02:43 AM Re: Heater installation in my 1936 truck [Re: 35Mike]
dunfire Offline

Backyard Mechanic

Registered: 11/06/04
Posts: 269
Loc: Palm Harbor, FL
Mike, I had a 36 Chevrolet Super Delux heater in my truck and replaced it with a 37 GMC Delux heater and neither shaked or wobbled, I can send you pictures of how they were installed if that would be helpful. Both used 1 1/2 inch fender washers on the firewall side.
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1936 GMC T-14 low cab. TA for 1935-37 GMC

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#385699 - 03/15/17 06:45 AM Re: Heater installation in my 1936 truck [Re: 35Mike]
Junkyard Dog Offline




Registered: 11/23/01
Posts: 27912
Loc: Eagle Point, Oregon
Quote:
It shakes horribly from side to side to the extent that I'm afraid it will break the firewall at the bolts.


Can you be more specific? Does the heater shake all of the time from road vibration when you are driving the vehicle or does the heater only shake when the heater fan is running?

laugh wink beer2
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#385718 - 03/15/17 08:27 AM Re: Heater installation in my 1936 truck [Re: Junkyard Dog]
41specialdeluxe Offline



Registered: 09/14/09
Posts: 4564
Loc: NC usa
jD,

That's a good point that needs to be known when trying to analyse the shaking. i think you are interested in knowing whether or not the fan may have lost a blade.

Charlie computer

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#385721 - 03/15/17 08:44 AM Re: Heater installation in my 1936 truck [Re: Junkyard Dog]
35Mike Offline

1500

Registered: 08/19/04
Posts: 1731
Loc: Columbia, MO
The heater is a square core inside a round housing. The doors open to send the warm air toward the driver side. The housing has a small blue tag at the bottom with the bow tie/Chevrolet logo. The part of the heater frame that contacts the firewall is a ribbed vertical band, about 3" wide, as I recall. The 2 bolts are inline, one directly above the other in the center of the ribbed band. I used fender washers on the engine side. The water pipes are diagonal to each other.
When I first put the heater in, and before it was plumbed, I went for a ride and the heater shook constantly. I hoped that attaching the hoses and adding the weight of the water would solve the problem. It helped, but now it seems like the heater is just waiting for an opportunity to shake, and does so any time I hit a bump in the road. It turns out there are a lot more bumps in the road when you are driving a 1936 Chevy 1-1/2 ton truck, than there are when you are driving your mini van.
I think the shake could be cured by adding some width to the 3" band part of the heater frame to give it a wider base against the firewall. I just don't like making these modifications if there is another solution.

Pooch,
It does not make a difference if the heater motor is running. I'm still looking for a NOS heater motor.

Charlie,
No blades missing or other obvious reason for "out of balance" as a cause.

Mike


Edited by 35Mike (03/15/17 08:47 AM)
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ml.russell@mchsi.com

Many miles of happy motoring

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#386461 - 03/27/17 09:35 AM Re: Heater installation in my 1936 truck [Re: 35Mike]
42special Offline

Shade Tree Mechanic

Registered: 11/12/14
Posts: 166
Loc: Idaho
Hi Mike most of the heaters that I have worked on over the years had sponge rubber pieces placed between the core and the housing. All were in various states of decay and no longer provided a cushioning affect for vibrations and or rattles. A piece between the housing and firewall might help quiet it down as well.


Edited by 42special (03/27/17 09:36 AM)

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#386469 - 03/27/17 10:36 AM Re: Heater installation in my 1936 truck [Re: 42special]
Chev Nut Offline




Registered: 01/08/02
Posts: 24109
Loc: West Allis,Wi.
The foam rubber was a seal to prevent water leaks and engine smells and noise to enter the car.
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Chevgene

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#386475 - 03/27/17 11:42 AM Re: Heater installation in my 1936 truck [Re: Chev Nut]
42special Offline

Shade Tree Mechanic

Registered: 11/12/14
Posts: 166
Loc: Idaho
Right Gene, but I have also seen them placed between the core and the housing that the core is in. Which would only insulate against vibration and rattles. Maybe they did not do that in 36, but it appears to be quite common in 40's and 50's heaters that I have worked on.

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#386605 - 03/28/17 06:55 PM Re: Heater installation in my 1936 truck [Re: 42special]
35Mike Offline

1500

Registered: 08/19/04
Posts: 1731
Loc: Columbia, MO
The square core has a baffle around it to make it tight in the round housing. It doesn't really rattle, it shakes violently, from side to side, on any road surface that is not really smooth.

Mike
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Many miles of happy motoring

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