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Makotosun

Stripped screw head on oil pump cover-

  • EnduroDan
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Stripped screw head on oil pump cover- was created by EnduroDan

PO left me a little gift with this stripped out phillips head screw on the oil pump cover.  My plan is to dremel in a groove so I can take it out with a flat head screwdriver, but before I did that I wanted to run it past you guys and see of you had any other ideas.
 
07 Mar 2021 16:07 #1

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Replied by Yamadude on topic Stripped screw head on oil pump cover-

There are lots of techniques, but that is a good starting point.   Go for it..  and then replace it with an allen head from your local hardware store. 

Oh, those damn PO's !!
You can just call me Dude.
Syracuse, New York
Current bikes: 1973 DT3, 1974 TY250, 1969 Triumph Bonneville, 1975 XS650, 1976 XS650, 1982 XS650, 1983 XS650, 2006 FJR1300
Last edit: 07 Mar 2021 16:15 by Yamadude.
07 Mar 2021 16:12 #2

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Replied by Alert on topic Stripped screw head on oil pump cover-

Tap on side of screwi with a chisel in release direction.  It should back right out.
07 Mar 2021 16:38 #3

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Replied by Yamadude on topic Stripped screw head on oil pump cover-

Although you run the risk of chipping off a portion of the screw head with this techique, making difficult the option of the slot idea that the owner has. 
You can just call me Dude.
Syracuse, New York
Current bikes: 1973 DT3, 1974 TY250, 1969 Triumph Bonneville, 1975 XS650, 1976 XS650, 1982 XS650, 1983 XS650, 2006 FJR1300
07 Mar 2021 16:50 #4

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Replied by Mothersbaugh on topic Stripped screw head on oil pump cover-

Left handed drill bits. You have plenty of metal left in the "Phillips head" area for a left handed drill bit to catch on and back out the screw.
And then I'd replace it with a genuine Yamaha screw and get myself a set of Japanese Industrial Standard (JIS) screwdrivers.
The following user(s) Liked this Post: Bigdog302, Swoop56
Last edit: 07 Mar 2021 16:59 by Mothersbaugh.
07 Mar 2021 16:54 #5

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Replied by JayB on topic Stripped screw head on oil pump cover-

That screw head might be too far gone, but I have repeatedly tapped one like in your picture with the round end of a ball peen hammer.  You can sometimes get a tight fit again with a phillips bit.  Impact drivers used properly with a tight bit are the best.

But cutting a slot and using a chisel or flathead screw work well too.
07 Mar 2021 16:58 #6

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Replied by Alert on topic Stripped screw head on oil pump cover-

With a dremel you run the risk of nicking side cover. Flip a coin.
07 Mar 2021 16:59 #7

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Replied by Yamadude on topic Stripped screw head on oil pump cover-

All strategies must be accomplished carefully.    The degree of success is in your skill and application of caution. 
You can just call me Dude.
Syracuse, New York
Current bikes: 1973 DT3, 1974 TY250, 1969 Triumph Bonneville, 1975 XS650, 1976 XS650, 1982 XS650, 1983 XS650, 2006 FJR1300
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07 Mar 2021 17:04 #8

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Replied by MarkT on topic Stripped screw head on oil pump cover-

Mashing with punch or ball pein folowed by #3 JIS bit in a hammer-powered impact dirver would be my first tries.
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
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07 Mar 2021 17:24 #9

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Replied by Bigdog302 on topic Stripped screw head on oil pump cover-

I have had some of those screws that were so damaged, I had to drill the screw head off then remove the screw once I got the cover off.
2 1968 DT1s,1970 RT1M,1970 DT1C,1971 RT1B,1971 Honda Z50K2,1974 DT100A 1974DT250A,1974 Honda MT250,2 1975 DT400Bs,1975 Honda CR250M1,1978 DT175E,1979 Honda CR250R.
Dave
Jesus is Lord!
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Last edit: 07 Mar 2021 19:17 by Bigdog302.
07 Mar 2021 19:16 #10

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