M715 Spark plug tool? - Steel Soldiers::Military Vehicles Supersite

Milbikes · 10-14-2009, 23:37

Is there a special tool required to remove the spark plugs from an M715 engine? I have to help a guy get one running to move it, and he says he doesn't have a socket that will fit it. My WC56 looks a bit easier to get the plugs out of! Thanks for any tips. Hal

WillWagner · 10-15-2009, 00:00

Yes there is. You can probably get the wires off with a 12pt crowsfoot, but the hex on the plug is kinda far down past the top. Maybe a chrome Craftsman socket will be deep enough. Don't know who would have one. Here's one on e-bay. It looks like the one we use at the museum...except ours is old lookin'

Willys Dodge M38 M38A1 M151 M715 Spark Plug Wire Wrench - eBay (item 120479262491 end time Oct-18-09 18:30:26 PDT)

Barrman · 10-15-2009, 12:12

11/16" open end will normally fit the wire end. If not, find a super cheap chinese open end and grind until it fits.

The plug itself is a regular 13/16". Just the plugs pointing to each other make it so a socket driver normally won't fit on top. A crow foot as suggested above will work. So will taking a chinese box end and bending it to clear. Think old time distributor wrench. With the other end sticking up, a long screw driver works great to give twisting leverage.

It seems there are at least 3 different length replacement plugs out there currently all with the same number. The shortest of these can be removed with a regular spark plug socket and driver. The other two sizes need to have creativity to get out one plug for every grouping of two. Then the other 3 can be pulled like normal.

M543A2 · 10-15-2009, 12:53

All of my gas engine wire nuts are 3/4 inch.
I happened onto the wrench (Ebay) pictured that fits the spark plug wire nuts and the hard to get to distributor spark wire nuts. It is the only one I have ever seen. It is stamped "KAL USA".
If anyone knows a source, it might help others.
Regards Marti

Barrman · 10-15-2009, 16:47

You are correct. I just walked over to a M715 and pulled the number one plug wire off with an open end 3/4". One flat at a time, but it comes off. Sorry about that. I have the same tool pictured above and haven't had to think about the size in a few years.

bcowanwheels · 10-16-2009, 01:22

take a 13/16 socket, cut it in half, weld a piece of plpe in between the 2 pieces to extend it and you got a plug socket good and cheap......
bob

gwalker · 10-17-2009, 12:11

they are on ebay all the time they work for the wires