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46 Half ton heater #1307721 Fri Apr 19 2019 03:23 PM
Joined: Nov 2018
Posts: 5
4
46pkup Offline OP
New Guy
Hi all, I have a dilemma with the Wards heater in the old truck and looking for suggestions. Its been unhooked for at least 15 years. I believe the blower motor gave out so they just abandoned it. Touched wires directly to battery but no joy. Fan spins freely by hand. Really can't foresee getting the giant nuts lose on the firewall to remove it without damaging the heater core or destroying it. I haven't seen any units similar to replace it with. If I could remove it without damage I look at trying to rebuild it. Any suggestions. Thanks

Attached Files
heater1 resize.jpg (43.6 KB, 103 downloads)
heater2 resize.jpg (40.98 KB, 109 downloads)
Re: 46 Half ton heater [Re: 46pkup] #1307726 Fri Apr 19 2019 03:39 PM
Joined: Apr 2005
Posts: 7,609
Justhorsenround Offline
Grease Monkey, Moderator General Truck Talk & Greasy Spoon
Soak the nuts with PB Blaster or Kroil several times over the course of 3-4 days. Then using the proper size wrench try to “Tighten” the nuts just a bit. Then hit it again with penetrating oil and start loosening the nuts. Bet they come off. Motors are available for the blower. 🛠


Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
'47 Chevy 3100 5 Window (long term project)


"I fought the law and the law won" now I are a retired one!
Support those brave men/women who stand the "Thin Blue Line" and lock up those on the wrong side of that line.

Re: 46 Half ton heater [Re: 46pkup] #1307749 Fri Apr 19 2019 05:28 PM
Joined: Nov 2011
Posts: 186
1
1946GMCDAN Offline
Shop Shark
Motor replacement is easy enough. I have a new 6 volt and 12 volt heater motor I am not using. May or may not fit. Not hard to measure. Cores can be soldered or replaced.


Trombones Totem Poles And Old Trucks!
Re: 46 Half ton heater [Re: 46pkup] #1307757 Fri Apr 19 2019 06:03 PM
Joined: Jun 2005
Posts: 699
V
VEW Offline
Shop Shark
Following Martin's advise will get you there. Be patient. Tighten, loosen, tighten, loosen, repeat....The metal these trucks were made with enable you to do that without rounding off the nut.
Good luck!


Victor

41 3/4 Ton Pick Up (in process)
55 Grumman Kurbside (Doughboy) 235/3 on tree w/ OD
57 3100
58 C4400 Viking (Thor)
59 C4500 Short Bus (Magic Bus)
59 G3800 1 Ton Dually (Chief)


Re: 46 Half ton heater [Re: 46pkup] #1307815 Sat Apr 20 2019 02:17 AM
Joined: Nov 2018
Posts: 5
4
46pkup Offline OP
New Guy
Thanks, been soaking with PBB for a week. Problem is - if you look closely at heater2 pic, there are 4 pieces showing.

The threaded center piece with the inlet/outlet pipes sticking out
A circular piece next to the firewall that just gives added support to the firewall metal
A nut tightened to the circular piece
Another nut used to lock the 1st nut from turning

The nuts are 2" or better, far bigger than basic tools. Thinness of the nuts prevents using very thick tools. Pipe wrenches and channel locks are out. I'm to the point of getting out the dremmel w/cutting disk to try and cut and split the nut

Don't ya just love working on 70 year old stuff without destroying things.

Thanks again

Re: 46 Half ton heater [Re: 46pkup] #1307850 Sat Apr 20 2019 12:53 PM
Joined: Apr 2005
Posts: 7,609
Justhorsenround Offline
Grease Monkey, Moderator General Truck Talk & Greasy Spoon
Try a pencil point propane torch before you go slicing and dicing.


Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
'47 Chevy 3100 5 Window (long term project)


"I fought the law and the law won" now I are a retired one!
Support those brave men/women who stand the "Thin Blue Line" and lock up those on the wrong side of that line.

Re: 46 Half ton heater [Re: 46pkup] #1307866 Sat Apr 20 2019 01:47 PM
Joined: Jun 2011
Posts: 2,794
E
EdPruss Offline
Shop Shark
Don't forget, your heater core is only rated for zero or 5 psi, so a modern higher radiator pressure system will likely cause it to fail soon.

Ed


'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
Re: 46 Half ton heater [Re: 46pkup] #1308584 Thu Apr 25 2019 10:51 PM
Joined: Jan 2000
Posts: 1,996
J
JiMerit Boltr#43 Offline
Shop Shark
To bad back in the day folks didn't spring for the factory heater! Instead (like with my '46) they bought an off brand (and later another requiring even more holes) and began boring holes all over the place vs using the GM holes, probably saved $1.25! Well at least I got to practice my welding skills.


It's easier to get forgiveness than permission!
1946 1/2-Ton Chevy
1953 Chevy 3/4-ton Factory Stakebed

Moderated by  Rusty46 

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