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Subject: Drain plug removal

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Tony    Posted 12-17-2017 at 21:21:46 [URL] [DELETE]        [Reply] [Email]  
  • Drain plug removal
  • Hello all, I am trying to change the engine oil on my 48 8N but cannot loosen the big drain plug on the sump. Any suggestions

    ZANE    Posted 12-20-2017 at 11:53:13 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Drain plug removal
  • On stubborn ones I use a chisel to dig into the edge of the plug and turn it by whacking the chisel with a two pound hammer. Never fails.


    Tim Daley(MI)    Posted 12-20-2017 at 07:18:26 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Drain plug removal
  • Tony-
    The hex size AF (Across Flats) on the oil drain plug is 1-1/16”. It is best to use a good 6-point 1-1/16” socket (a 12-point will do if no 6 available) on a breaker/cheater bar. If it is stubborn then add a length of steel pipe for more torque. If hex is rounded off, chances are someone else has had the problem of not getting it removed. Rounded corners usually happen from open end wrenches that are worn and slip. Worse yet, if someone has used channel locks, pliers, or vise grips to try and remove it, those will also slip and round off the corners. It is likely when the last time the plug was installed, the person failed to put a new gasket on. When doing an oil change and draining the oil, always be certain the pan surface and the plug mating surface are free of any old gasket material. Then, install the new gasket on the drain plug, take a can of clean, fresh oil and apply a good coating on the gasket surface before installing. Do not overtighten, check for leaks after. When installing, don’t reef down the plug with your breaker bar and pipe, just use a standard socket wrench using normal hand torque. For really stubborn, rounded off plug hexes, you may have to spray some PB BLASTER around the plug surface and let set for a spell. Tapping with a punch and hammer may assist in loosening the seal too. If plug hex is severely rounded off, get a new one, p/n 9N-6730. The drain plug has a fine mesh screen attached as the oil pump intake is right there when plug installed. Sometimes guys remove the screen when they have poor oil pressure thinking it will help, and really does nothing but eliminate filtering of larger debris in the oil. The screen is there for a reason –make sure the plug has one.

    Tim Daley(MI)

    JC77046    Posted 12-19-2017 at 16:24:44 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Drain plug removal
  • The last time I had trouble was because corners were rounded off. I got a 8 point socket and put it on the plug and attached a flex handle. Then I tapped on flex handle with 5 pound sledge hammer. Took a little but it came off. The 8 point socket saved the day.


    WayneIA    Posted 12-18-2017 at 23:03:49 [URL] [DELETE]        [Reply] [Email]  
  • Re: Drain plug removal
  • The nut is rounded and won't hold a socket? A hydraulic jack to hold a pipe wrench in place around the nut and a pipe wrench, and now a pipe. That should do it.

    Jack - Iowa    Posted 12-19-2017 at 09:03:25 [URL] [DELETE]        [Reply] [Email]  
  • Re: Drain plug removal
  • Add a Come-a-long to that pipe wrench and you won't need the pipe. Worked on the Hydraulic drain plug on my 860.

    alg    Posted 12-19-2017 at 01:35:06 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Drain plug removal
  • I had to put a little heat on mine to get it lose.


    grizz    Posted 12-17-2017 at 22:59:16 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Drain plug removal
  • what are you using ? if you have a socket on it with a ratchet add a piece of pipe 2to 3 ft long should come also bang on it a couple of times

    Kirk-NJ    Posted 12-18-2017 at 04:53:16 [URL] [DELETE]        [Reply] [Email]  
  • Re: Drain plug removal
  • 1 1/16 socket with breaker bar with 3'/4' pipe. In all the years I've been doing this I've only snapped one and the rest was easily removed with a chisel. Buy or make a gasket for reinstall.

    Bruce (VA)    Posted 12-17-2017 at 22:09:47 [URL] [DELETE]        [Reply] [Email]  
  • Re: Drain plug removal
  • See tip # 65

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