Joined: Oct 26, 2008 Posts: 10 Location: South West England
Posted: Tue Apr 26, 2016 3:55 am Post subject: M38A1 oil line failure
Hi, just returned from a short trip in my 1953 M38A1 when it spewed out a couple of pints of engine oil on my drive. Investigating I found that the rubber oil pipe that goes from near the top of oil filter down to the engine block just behind the fuel pump had pulled out of its metal crimp fitting just by the elbow into the engine block. (I guess it is taking the pumped oil from the engine up to the filter?). I'm thankful it happened on my drive - it could have been anywhere on the road. I tracked down what I think is a replacement and ordered it online last night as the stock level said '1 left', but when I rang the storeroom this morning to check it is the right part they couldn't tell me - it is described on their site as 'This oil line inlet from Omix-ADA measures 21.5 inches and fits the 134 CI L-Head found in 1941-1953 Willys/Jeep models'.
SKU: 17470.06
Ref No: A-1197
Can anyone advise? I took the old one off and its about the same length and the picture online looks about right. Thanks. Also has anyone fixed up an oil pressure warning light or similar - my oil pressure gauge is not very reliable and I would hate to miss it if it happened again. Thanks all.
Joined: Feb 20, 2007 Posts: 606 Location: Illinois
Posted: Tue Apr 26, 2016 8:29 am Post subject:
The catalog describes the hose as for a L-134 engine, you have a F-134 engine in your M38-A1. But that is not the issue per se, the length of the hose is. If you have measured your hose and it is the same as what is described in the catalog, you'll be ok. Do you have the Military Junior oil filter and standard filter mounting bracket? A Cuno or non-standard setup may change the length of hose needed. The hose carries oil from the oil pan the filter, then the oil drains back down to the front timing gear cover and into to the pan. _________________ 1951 M38
Joined: Aug 31, 2010 Posts: 1744 Location: SO IDAHO
Posted: Tue Apr 26, 2016 8:35 am Post subject:
Beware the replacement oil lines mfg in china, korea, india and so on. Often the ends are poorly crimped and the fittings are not barbed. Insist on barbed fittings and lines of US manufacture. The smart money is on MWM lines, you'll pay more but wont spill your jeeps life blood on the hwy. _________________ keep 'em rollin'
RICKG MC 51986 DOD 01-52, '50 CJ3a
remove your oil line and the detached fitting after you check it's fit to make sure it wasn't too short. Then find a local heavy equipment repair shop or hose shop and have them make a duplicate of what you have. These shops assemble brand new replacement custom hoses for industrial equipment hydraulic and engine oil systems and will be able to make what you need.
Oil pressure switch and warning light is simple task. Add a "T" fitting at the engine oil sender port and install an electric oil press switch and wire in a light. You will want a normally closed switch that opens when the pressure is below about 5 PSI.
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