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Hi, I want to start doing more of my own PM work on my Cummins N14. When I change the coolant filter on the right side of the engine, next to the oil filter, how do I shut off the drainage? There is a bolt with a locking setscrew just over the top of the filter, is this the shutoff valve? Pretty hard to find a comprehensive manual that covers this routine procedure...thanks for the advice...
that may be it, but all the shutoff's ive seen have a small lever and you just push or pull it, and itll shut it off, id bet money it has one but the tricky part is finding it! oh, if that is the shutoff, most likely it will turn roughly a half turn, not to mention have lil stoppers for it!
be sure to turn it back on, seen quite a few ppl forget about it!! good luck!
There is a Shutoff valve or lever next to it or close by i just turn like a water hydrant @ home .
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Macks are like wine they only get better w/ age.
the rectangular thingy above the filter IS the shutoff. up and down is open, sideways is closed. If it's a typical M-11, it's probably stuck open. Expensive solution is to change the whole thing. To change the filter without soaking yourself, stick your shopvac hose in the top of the rad, (not into the water!) wrap a rag around it, and just as you turn the filter off turn on the vacuum, it'll pull the water away from the filter until you get the new one installed. DON'T just change the filter! Test the pH level of your coolant. (Your filter suppier has test kits available) You may have to add inhibitor (also available from your filter supplier).
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Commercial Vehicle Maintenance Forum
Ian A. Vaughan
You are on the right track. What you described is the shutoff. It only rotates a 1/4 turn, so do not break it with too much force. I would test the fluid with the paper strips and see if it needs changed. I haven't changed my filter in a year, because it hasn't needed it. I did add a bottle of something (CRS) last oil change to bring it up to specs. The book said add a bottle, or change the filter. The bottle was cheaper, so I put it in. I think it was the inhibitor others have talked about, but it was a month ago, and I've slept since then. Good luck on doing your own maintenance. I plan to do the same when I get a shop built. (I do the minor stuff now, but need a shop for the major stuff.)
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8 posts • Page 1 of 1
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