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'55-56 Dodge heater box parts
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   Forward Look Technical Discussions -> Heating, Cooling and Air ConditioningMessage format
Posted 2022-09-20 10:23 AM (#624362)
Subject: '55-56 Dodge heater box parts


Posts: 75
Location: VIrginia

Hi all! I am in the process of cleaning up the firewall on my 1955 Dodge Custom Royal Lancer while the motor is out at the machine shop.  I took off the heater box with no problems except at the heater control valve and trying to remove the heater core hoses that were stuck.  Gave the box a good cleaning with Purple Power. 

The heater fan motor was running a bit slow so I took it apart, cleaned the armature and checked the brushes which did  not have a lot of wear. Replaced the feed wires and end terminals the the cloth covered wires from Rhode Island Wiring Service.  I also put the blower fan wheel in my sand blaster and cleaned it up.  Then replated the fan wheel with zinc from Caswell to  keep it from rusting.  The blower now turns freely and seems to run a lot faster than before. The motor bearings seem to be the Oilite type but I just put a few drops of light weight oil on them which really freed them up. 

56D500Boy post "55-56 Heater Related Parts" shows a nice parts layout of the heater of which I removed item 18 (fan box insulation cover/gasket) & 38 (heater core gasket). Are these items being made and where can one buy them.  I am missing item #34 (Drip Tube). Any suggestions on what to use to make these items if there are not available.     

Edited by '55-3Hemi 2022-09-20 10:45 AM

(Heater box resize.jpg)

(Heater fan blower resized.jpg)

(Heater Box interior insulation Resized.jpg)

(Inside heater box Resized.jpg)

Attachments Heater box resize.jpg (95KB - 73 downloads)
Attachments Heater fan blower resized.jpg (103KB - 78 downloads)
Attachments Heater Box interior insulation Resized.jpg (104KB - 78 downloads)
Attachments Inside heater box Resized.jpg (100KB - 83 downloads)
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Posted 2022-09-20 10:59 AM (#624363 - in reply to #624362)
Subject: RE: '55-56 Dodge heater box parts

Expert 5K+

Posts: 9649
Location: Lower Mainland BC
I refurbed my heater box (following a few of Dels56 hints along the way) while I was testing and fixing my car's heater core.

This included replacing that old nasty factory insulation with some Eastwood X-mat low profile (which is like Dynamat) mats and Eastwood foam core X-Mat High Profile mats and some aluminum foil duct tape. I didn't do anything to improve or replace the drain tube. I wouldn't worry as long as the hole is not blocked, excess water will find its way out.


Edited by 56D500boy 2022-09-20 11:38 AM
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Posted 2022-09-20 3:30 PM (#624371 - in reply to #624362)
Subject: Re: '55-56 Dodge heater box parts

Extreme Veteran

Posts: 332
I used a yoga mat for the gasket between the box and the firewall. Cheap yoga mats may not be fire retardant but the better one are. I also used the yoga mat for tail light housing gaskets, etc.

Del S

(IMG_5697 2.JPG)

(IMG_5699 2.JPG)

Attachments IMG_5697 2.JPG (41KB - 76 downloads)
Attachments IMG_5699 2.JPG (33KB - 80 downloads)
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