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willysmjeeps.com :: View topic - WTB: Heater Motor Resistor Part# 8710856
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WTB: Heater Motor Resistor Part# 8710856

 
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dayboy42
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Joined: May 08, 2011
Posts: 98
Location: New England

PostPosted: Mon Oct 22, 2018 3:20 pm    Post subject: WTB: Heater Motor Resistor Part# 8710856 Reply with quote

I am in search of the resistor for the coolant heater blower. Most people recognize them from the M151 Hot Water Personal Heater Kits. They were used in all of the coolant heater kits though.

Part# 8710856
NSN 5905-00-777-8491


Typically Marked: 8710856 50 10% MEMCOR 8531 (sometimes 8217)

Wire wound fixed
50 watts
5 ohms
10% tolerance



Thank you for your help! - Matt
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Matt, Truck 1/4 Ton 4x4, M-38 (G-740)
Willy's Model: MC
DOD April 1952
Ser. # 63326
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wesk
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Joined: Apr 04, 2005
Posts: 16227
Location: Wisconsin

PostPosted: Mon Oct 22, 2018 9:55 pm    Post subject: Reply with quote

Installation Bulletin for the M38 hot water heater Kit

http://willysmjeeps.com/v2/modules.php?set_albumName=album317&op=modload&name=gallery&file=index&include=view_album.php


Parts list for M38 Hot water heater kit


Installation of the resistor


Resistor is item J.


Resistor is item H.


Wiring


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Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100

Mjeeps photo album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php
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RICKG
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Joined: Aug 31, 2010
Posts: 1739
Location: SO IDAHO

PostPosted: Tue Oct 23, 2018 1:53 pm    Post subject: Reply with quote

https://assets.alliedelec.com/f_auto,c_scale,w_200,d_no_image.png/70022806.jpg

Google OHMITE L50J5R0

50 WATTS
5 OHMS

It's what I used, they're around 20 bucks.
I think I have a spare if you don't find one.

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RICKG MC 51986 DOD 01-52, '50 CJ3a
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45auto
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Joined: Apr 06, 2005
Posts: 147
Location: Georgia

PostPosted: Tue Oct 23, 2018 5:35 pm    Post subject: Reply with quote

Outstanding detective work RickG!!! I looked around on the site and found the mounting brackets also. Several places sale both and prices varied also.
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Harold W.
MVPA #6833
1945 GPW
1950 CJV-35/U
1951 M38 1952 M38
1962 USMC Contract M38A1
1953 Strick M100 1967 Johnson M416
1968 CJ5 4-Speed 1969 CJ5 V6
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dayboy42
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Joined: May 08, 2011
Posts: 98
Location: New England

PostPosted: Tue Oct 23, 2018 6:37 pm    Post subject: Reply with quote

Thanks Rick! That will work perfectly. Always plenty of research when your wrenching on these old girls.

Have a great week.

~ Matt
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Matt, Truck 1/4 Ton 4x4, M-38 (G-740)
Willy's Model: MC
DOD April 1952
Ser. # 63326
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RICKG
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PostPosted: Tue Oct 23, 2018 6:41 pm    Post subject: Reply with quote

Thanks for the shout Harold, much appreciated, Proof a blind squirrel finds a nut now and then.

Matt, I do have the resistor (no brackets) as a spare i'll never use if you're interested. I have pic of my mount here..

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RICKG MC 51986 DOD 01-52, '50 CJ3a
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dayboy42
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Posts: 98
Location: New England

PostPosted: Thu Oct 25, 2018 3:14 pm    Post subject: Reply with quote

Thanks for the offer Rick but I found one on eBay really quick and cheap. Looks liked you introduced a relay into the system?

~ Matt
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Matt, Truck 1/4 Ton 4x4, M-38 (G-740)
Willy's Model: MC
DOD April 1952
Ser. # 63326
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bluewatersailor
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Joined: Nov 19, 2010
Posts: 107
Location: ITALY - TUSCANY

PostPosted: Fri Oct 26, 2018 8:26 am    Post subject: Reply with quote

That resistor gets HOT. The bare metal clips shown in Dayboy 42's first post photo are correct. I believe that a plastic or rubber-covered clamp as show in the last photo would deteriorate quickly and pose a safety issue. Just sayin'.
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David Manning
1952 M38A1, 1953 M38A1, 1954 M38-A1, 1952 M100
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RICKG
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PostPosted: Fri Oct 26, 2018 9:37 am    Post subject: Reply with quote

Hi David, I worried about that at first and watched it carefully-yes it was hot, uncomfortably hot to the touch but in 5 years time the rubber has not degraded. However I rarely use the low speed setting.

Matt, the relay you see below the resister is my turn signal flasher.
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RICKG MC 51986 DOD 01-52, '50 CJ3a
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dpcd67
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Joined: Nov 25, 2016
Posts: 187
Location: Iowa

PostPosted: Sat Oct 27, 2018 4:00 pm    Post subject: Reply with quote

Yes they get very hot; I see them all the time on that big on line auction site.
I got one for the one that burned out on my M37 with the Hunter kit installed under the dash.
Or you can just run it on high all the time.
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M38 34523 Sep 51
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4x4M38
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PostPosted: Mon Nov 05, 2018 7:13 am    Post subject: Reply with quote

Related post:

http://www.willysmjeeps.com/v2/modules.php?name=Forums&file=viewtopic&t=9578&highlight=resistor
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Brian
1950 M38
MC11481
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