WTB: Heater Motor Resistor Part# 8710856

dayboy42

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
_________________
Matt, Truck 1/4 Ton 4x4, M-38 (G-740)
Willy's Model: MC
DOD April 1952
Ser. # 63326

wesk · Posted: Mon Oct 22, 2018 9:55 pm Post subject:

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

_________________
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

RICKG · Member Joined: Aug 31, 2010 Posts: 1744 Location: SO IDAHO

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.

_________________
keep 'em rollin'
RICKG MC 51986 DOD 01-52, '50 CJ3a

45auto · Posted: Tue Oct 23, 2018 5:35 pm Post subject:

Outstanding detective work RickG!!! I looked around on the site and found the mounting brackets also. Several places sale both and prices varied also.
_________________
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

dayboy42 · Posted: Tue Oct 23, 2018 6:37 pm Post subject:

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

Have a great week.

~ Matt
_________________
Matt, Truck 1/4 Ton 4x4, M-38 (G-740)
Willy's Model: MC
DOD April 1952
Ser. # 63326

RICKG · Member Joined: Aug 31, 2010 Posts: 1744 Location: SO IDAHO

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..

_________________
keep 'em rollin'
RICKG MC 51986 DOD 01-52, '50 CJ3a

dayboy42 · Posted: Thu Oct 25, 2018 3:14 pm Post subject:

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
_________________
Matt, Truck 1/4 Ton 4x4, M-38 (G-740)
Willy's Model: MC
DOD April 1952
Ser. # 63326

bluewatersailor · Posted: Fri Oct 26, 2018 8:26 am Post subject:

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'.
_________________
David Manning
1952 M38A1, 1953 M38A1, 1954 M38-A1, 1952 M100
Photos on Page 10 of Members Albums.

RICKG · Member Joined: Aug 31, 2010 Posts: 1744 Location: SO IDAHO

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.
_________________
keep 'em rollin'
RICKG MC 51986 DOD 01-52, '50 CJ3a

dpcd67 · Member Joined: Nov 25, 2016 Posts: 187 Location: Iowa

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.
_________________
M38 23100 June 51
M38 34523 Sep 51
M606/CJ3B 1964 Kaiser 57348 118458
M37B1 1963
Willys MB 1944
Ford GPW 1942
Dodge WC63 1943
Dodge Power Wagon WM300 1967
Plymouth Barracuda, 1973, 340 4 barrel
All ground up restored by me.
Lots of others.

4x4M38 · Posted: Mon Nov 05, 2018 7:13 am Post subject:

Related post:

http://www.willysmjeeps.com/v2/modules.php?name=Forums&file=viewtopic&t=9578&highlight=resistor
_________________
Brian
1950 M38
MC11481
http://www.willysmjeeps.com/v2/modules.php?set_albumName=album372&op=modload&name=gallery&file=index&include=view_album.php


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