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AMP Member
Joined: Feb 24, 2013 Posts: 8
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Posted: Sat Oct 05, 2013 12:46 pm Post subject: M-38 Water Pump Question... |
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Greetings all Mil Jeep bretheren, First time post'r, long time fan....I'm restoring a '51 M38. I have a question regarding the water pump. My L134 water pump was shot so I purchased a new repro pump online. When I looked down into one of the larger holes in the pump I recieved I noticed what appeared to be an excess of flashing (likely from the casting process) in the pump (the hole seemed to be too constricted to allow proper water flow). Does anyone have knowledge/diagrams of how the water flows through the pump and how the bore for each of the water pump holes should look...I'm trying too determine if I need to grind out some of the flashing or if the casting was incomplete or improperly done somehow. Thanks so much for your time! |
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wilfreeman Member
Joined: Mar 13, 2006 Posts: 1079 Location: Richburg, SC
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Posted: Sat Oct 05, 2013 1:09 pm Post subject: |
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if I recall correctly, there shouldn't be any flashing in the inlet or outlet, and no obstructions. I tried the omix ada one also and it didn't have any obstructions (which is saying alot for them). The m38a1 pump is the same, as is the l134 pump (except for the pulley). Can you post a pic? _________________ Matt
1953 M38a1
1964 USMC M38a1
'51 USMC M100 trailer, '54 M100 trailer, '90 M101a1 trailer
Http://wilfreeman.wordpress.com (M38a1 build blog)
http://m38a1usmc.wordpress.com (USMC M38a1 rebuild blog) |
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AMP Member
Joined: Feb 24, 2013 Posts: 8
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Posted: Sat Oct 05, 2013 5:58 pm Post subject: Help.... |
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ok, I'm technologically challenged...I have a few good pics saved to my computer now, but how do I post them to this forum so that you can see them? Thanks! |
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wilfreeman Member
Joined: Mar 13, 2006 Posts: 1079 Location: Richburg, SC
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Posted: Sat Oct 05, 2013 6:42 pm Post subject: |
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wes or ryan will have to set you up a gallery - just ask wes for a pic gallery. you can email them to me and I can post them for you until then.
wilfreeman@truvista.net _________________ Matt
1953 M38a1
1964 USMC M38a1
'51 USMC M100 trailer, '54 M100 trailer, '90 M101a1 trailer
Http://wilfreeman.wordpress.com (M38a1 build blog)
http://m38a1usmc.wordpress.com (USMC M38a1 rebuild blog) |
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wesk Site Administrator
Joined: Apr 04, 2005 Posts: 16358 Location: Wisconsin
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wilfreeman Member
Joined: Mar 13, 2006 Posts: 1079 Location: Richburg, SC
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wilfreeman Member
Joined: Mar 13, 2006 Posts: 1079 Location: Richburg, SC
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Posted: Sun Oct 06, 2013 5:12 am Post subject: |
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And the other one. I'll post pics with the computer when I get home tonight:
_________________ Matt
1953 M38a1
1964 USMC M38a1
'51 USMC M100 trailer, '54 M100 trailer, '90 M101a1 trailer
Http://wilfreeman.wordpress.com (M38a1 build blog)
http://m38a1usmc.wordpress.com (USMC M38a1 rebuild blog) |
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tob Member
Joined: Oct 25, 2012 Posts: 33
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Posted: Sun Oct 06, 2013 11:09 am Post subject: bad water pumps |
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i also bought one from kaiser willys, and sent it back the bolt holes on the pulley didn't line up and weren't tapped straight bought a good on from midwest military. |
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wilfreeman Member
Joined: Mar 13, 2006 Posts: 1079 Location: Richburg, SC
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Posted: Sun Oct 06, 2013 3:12 pm Post subject: |
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That it's an omix ada pump, right? It is probably just a rough casting, if I am looking at the same part you are talking about (the neck of the inlet/outlet?). or are you talking about the jagged piece below the neck? I have been trying to remember what mine looked like. _________________ Matt
1953 M38a1
1964 USMC M38a1
'51 USMC M100 trailer, '54 M100 trailer, '90 M101a1 trailer
Http://wilfreeman.wordpress.com (M38a1 build blog)
http://m38a1usmc.wordpress.com (USMC M38a1 rebuild blog) |
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AMP Member
Joined: Feb 24, 2013 Posts: 8
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Posted: Sun Oct 06, 2013 6:05 pm Post subject: |
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Yep, it's the area inside the water pump "inlet" hole that I'm referring to (pictures taken from two angles as you look down into the inlet)...I know there should be the cylindrical obstruction of the mounting bolt housing in the middle, but the rough material on either side of it doesn't seem like it should be there (there is a small irregular shaped black hole visible on the one side, it seems to me this should be much larger at least on the one side if not both of them?). I'm wondering if I should bother trying to grind the excess metal out with a drill bit or just send it back and go with another company...hence my original question as to how the water is supposed to flow through the thing...any and all advice is appreciated! Many thanks to Matt and other's who've responded so far! |
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wilfreeman Member
Joined: Mar 13, 2006 Posts: 1079 Location: Richburg, SC
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Posted: Sun Oct 06, 2013 6:38 pm Post subject: |
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I hate to say it, but I don't have a spare pump sitting around to compare. And I can't remember to save my life. Maybe somebody else can tell you. Sorry _________________ Matt
1953 M38a1
1964 USMC M38a1
'51 USMC M100 trailer, '54 M100 trailer, '90 M101a1 trailer
Http://wilfreeman.wordpress.com (M38a1 build blog)
http://m38a1usmc.wordpress.com (USMC M38a1 rebuild blog) |
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wesk Site Administrator
Joined: Apr 04, 2005 Posts: 16358 Location: Wisconsin
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AMP Member
Joined: Feb 24, 2013 Posts: 8
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Posted: Mon Oct 07, 2013 2:19 pm Post subject: |
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Perfect! Those pics tell me exactly what I needed to know! I thought that was how it should look...your pics confirmed it! Many thanks Wes! |
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