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arisLgr Member
Joined: Dec 25, 2016 Posts: 110 Location: Athens, Greece
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Posted: Sun Aug 27, 2017 8:59 am Post subject: M38 24V SW Temp Gauge screw-up |
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Hi guys, I really screwed up my NOS SW temp gauge! It was working but showing lower than actual temperature, so daft me, to check it I hooked it up straight on to 24 volts and BANG, it died on me!
I'm sure I must have burned it so with replacement prices sky-high, does anyone know of a repair shop for those gauges?
_________________ Aris
Willys M38
1936 Cord Phaeton
1954 Mercury Monterey
1968 Corvette Stingray
1973 Mercedes 350SE
1974 Montesa Cota 247T
1982 Kubota B7100 |
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4x4M38 Member
Joined: May 30, 2014 Posts: 3447 Location: Texas Hill Country
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w30bob Member
Joined: Mar 22, 2017 Posts: 301 Location: Great Mills, MD
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Posted: Sun Aug 27, 2017 9:29 am Post subject: |
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Hi Aris,
The plastic lens for these gauges is held on by a "crimped-on" ring and is not intended to be removed. If you can find a way to re-crush the ring you could possible pry the ring up with a screwdriver from the backside and take gauge apart.........but they weren't designed to be taken apart.
Even if you got it apart......if you fried the small wire coil....it's toast. You're only real option is to replace it with another gauge. You see these gauges used at the meets for pretty cheap all the time.
regards,
bob |
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wesk Site Administrator
Joined: Apr 04, 2005 Posts: 16267 Location: Wisconsin
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Posted: Sun Aug 27, 2017 3:37 pm Post subject: |
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Only the extremely early M38 gauges were 6 volt and used the external 95 Ohm resistor. The rest are 24 volt (having internal resistors) so they are connected directly to 24 volt all the time.
Let us know the actual part number of the gauge you fried.
AC # 1512244, WO# 118105, ORD # 7728855 is the very early M38 MC10001 thru MC17855 units used with the external resistor.
All of these temp gages are with Internal resistors and connect directly to 24 Volt:
AC # 1512422, SW # 505A, WO # 119086, ORD # 7389567 AC # 1512669, SW # 505N, WO # 811244, AC# 1512676, AL # EO-11933, SW # 505K, WO # 808568, WO # 809822, ORD # 7954511.
AC = AC Delco
AL = Autolite
SW = Stewart Warner
ORD = US Army numbering
WO = Willys-Overland numbering. _________________ 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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arisLgr Member
Joined: Dec 25, 2016 Posts: 110 Location: Athens, Greece
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Posted: Mon Aug 28, 2017 5:02 am Post subject: |
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Thank you all for the replies, the gauge is still on the Jeep and I will be able to remove it in a couple of weeks, at that time I will post it's SN! _________________ Aris
Willys M38
1936 Cord Phaeton
1954 Mercury Monterey
1968 Corvette Stingray
1973 Mercedes 350SE
1974 Montesa Cota 247T
1982 Kubota B7100 |
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4x4M38 Member
Joined: May 30, 2014 Posts: 3447 Location: Texas Hill Country
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wesk Site Administrator
Joined: Apr 04, 2005 Posts: 16267 Location: Wisconsin
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arisLgr Member
Joined: Dec 25, 2016 Posts: 110 Location: Athens, Greece
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Posted: Fri Sep 08, 2017 11:21 am Post subject: |
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OK here it is
_________________ Aris
Willys M38
1936 Cord Phaeton
1954 Mercury Monterey
1968 Corvette Stingray
1973 Mercedes 350SE
1974 Montesa Cota 247T
1982 Kubota B7100 |
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4x4M38 Member
Joined: May 30, 2014 Posts: 3447 Location: Texas Hill Country
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baios Member
Joined: Jul 29, 2011 Posts: 159 Location: LAMIA GREECE
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Posted: Sat Sep 09, 2017 7:27 am Post subject: |
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aris baios here any foto of yr m38? |
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arisLgr Member
Joined: Dec 25, 2016 Posts: 110 Location: Athens, Greece
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Posted: Sat Sep 09, 2017 10:25 am Post subject: |
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Any links for the gauge troubleshooting? _________________ Aris
Willys M38
1936 Cord Phaeton
1954 Mercury Monterey
1968 Corvette Stingray
1973 Mercedes 350SE
1974 Montesa Cota 247T
1982 Kubota B7100 |
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4x4M38 Member
Joined: May 30, 2014 Posts: 3447 Location: Texas Hill Country
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arisLgr Member
Joined: Dec 25, 2016 Posts: 110 Location: Athens, Greece
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Posted: Sat Sep 09, 2017 10:34 am Post subject: |
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Thanks a million Brian ! _________________ Aris
Willys M38
1936 Cord Phaeton
1954 Mercury Monterey
1968 Corvette Stingray
1973 Mercedes 350SE
1974 Montesa Cota 247T
1982 Kubota B7100 |
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Back to top |
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arisLgr Member
Joined: Dec 25, 2016 Posts: 110 Location: Athens, Greece
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Posted: Sat Sep 09, 2017 11:01 am Post subject: |
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Well, I bench tested the gauge with a D 1,5 volt battery then with a 3,7 volt as well, nothing moving... so I've burned it
Where do I go from here? I did find a NOS one on line but it was very expensive, This one looks just like new so I wonder if it can be repaired, or maybe I could buy a cheap replacement and use it's innards on mine? _________________ Aris
Willys M38
1936 Cord Phaeton
1954 Mercury Monterey
1968 Corvette Stingray
1973 Mercedes 350SE
1974 Montesa Cota 247T
1982 Kubota B7100 |
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Back to top |
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arisLgr Member
Joined: Dec 25, 2016 Posts: 110 Location: Athens, Greece
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Posted: Sat Sep 09, 2017 11:09 am Post subject: |
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Baio here is the pic
_________________ Aris
Willys M38
1936 Cord Phaeton
1954 Mercury Monterey
1968 Corvette Stingray
1973 Mercedes 350SE
1974 Montesa Cota 247T
1982 Kubota B7100 |
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Back to top |
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