coolant system tester radiato adaptor ?

Saberr · Member Joined: Aug 21, 2015 Posts: 124

I need to pressure test my m38a1 coolant system. The radiator neck is larger than any of the adapters in the kit from local auto store. Is there any tricks to modifying or another way to pressure test system ? I read up on pressuring the over flow tube, but with only 4 LBs needed, don't want to chance anything.

wesk · Posted: Fri Feb 17, 2017 10:15 pm Post subject:

I have two different pressure test sets and both have adapters that fit. I suggest you shop online to find more options than seem to be available at your local auto parts store.

$235

[img]https://images8.jetcdn.net/md5/af8db9e43af3f2dc8a117f0de79077c8.500[/img]
$139

https://www.google.com/#q=automotive+coolant+system+test+set

Or Google the same equipment as a rental!

Don't overlook the Stant 12270 tester. It has a nice adapter listing in the Stant catalog.
http://www.stant.com/index.php/english/products/automotive-oem-products/cooling-system-components/radiator-caps/

The correct cap is either their 10228 (Oem type) or 10328 (Release valve type).
the correct test adapter is their 12552

Their catalog for pre-1994 models is:
http://www.stant.com/files/2714/0979/5243/Stant_Vintage_Guide.pdf

Their catalog for pressure testers, adapters and parts is:
http://www.stant.com/files/3514/0979/5293/Pressure_Tester_Adapters.pdf
_________________
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

DanS · Member Joined: Jun 17, 2012 Posts: 159 Location: Minnesota

If you have an O'Reileys Auto Parts store near you, check their tool loan program. Its free and should probably have what you need.

Dan
_________________
Dan Schultz
MD20035 9/1952
MC70324 dod 6/52
GPW 14944 dod 4/10/42
K38 Linemans Trailer 4/43
M100 Trailer 01177488 dod 8/51

skyjeep50 · Member Joined: Feb 20, 2007 Posts: 606 Location: Illinois

I pressure tested my M38's coolant system by using the rear plug on the L134 head.
_________________
1951 M38

RICKG · Member Joined: Aug 31, 2010 Posts: 1741 Location: SO IDAHO

My local Mom & Pop auto repair shop tested mine..cost me a box of donuts, jelly filled if I recall..
_________________
keep 'em rollin'
RICKG MC 51986 DOD 01-52, '50 CJ3a

Saberr · Member Joined: Aug 21, 2015 Posts: 124

I tried oreily first, and they didn't have anything. In all weirdness, harbor freights did. They have a tester set and you can mix and match to create one that fits the radiator, and it works. Found out my radiator is weeping a little and the water pump just has a constant stream coming out lol. Getting new pump this week.

4x4M38 · Posted: Sat Feb 18, 2017 10:51 pm Post subject:

Well ratdip. If it's not one thing it's another.

At least you found out before you got 500 miles from home....
_________________
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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