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Transaxle mounting screws (2) keep coming loose. These have already been replaced once and now the head has broken off one of them.

The part # 817 00 05-12, pc.#125, Screw 5/16-18 x 3/4. Is this a special material like grade 8? Where would I find these "special " bolts and how do I secure them?

Is there a torque requirement?

The repair manual does not call for a locking device. In the past I have replaced a broken link transfer rod pc.202 because of this problem. This is Not a new machine.

ANY help would be greatly appreciated...Thanks.

george

They appear to be a thread forming (self tapping) screw.
I'd try some blue Loctite and see what happens.

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They appear to be a thread forming (self tapping) screw.
I'd try some blue Loctite and see what happens.

Click to expand...

Blue not Red Loctite? Also, since the threads have already been "tapped" will another self-tapping screw work again as compared to a say, a 8 bolt?

Thanks,

George

Yes it is a self tapping screw. Yes only Blue Loctite as Red is permanent especially in aluminum. IF hole is worn out then you need to resize for a standard next size screw or Helicoil it and use a standard 5/18-18 x 3/4 grade 5 or grade 8 screw.

IF going to next size then use a M9 or M10 screw depending how bad the hole is worn.