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vnavaret
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Lads:

Looking for a little advice here. See item 13 in the attached drawing for the oil pump drive.

The Martin Robey drawing is slightly different than my engine. I have a countersunk hex socket screw instead of the hex cap screw shown in the drawing. I cannot get the darn thing loose.

To date I have heated it with MAPP gas, quenched it in oil, tapped on it with a hammer (gently!) pried, used a hex key and used many colorful metaphors. It won't budge. At the moment it is soaking in liquid wrench.

Any tricks out there for loosening it? I am thinking I need to get a hex key socket for my 3/8" ratchet rather than using a regular hex key. I have broken keys in the past straining to get things loose, and I feel I am close to breaking my current key.

Let me know of any tricks. Next I will try an appropriate key on my ratchet, but I am skeptical even that will not be enough.

Vance

Attachment: Screenshot 2025-01-03 172131.jpg (Downloaded 24 times)

Last edited on 01-04-2025 01:38 am by vnavaret

Jh092
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And that’s why you should only use a small dab of Loctite during assembly

vnavaret
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Jh092 wrote: And that’s why you should only use a small dab of Loctite during assembly
Not to be patronizing, but "I told you so" doesn't help very much. =:-o

In this case I can plead "'Twas not I, good sir" as I did not install the accursed thing.

'Tis the spawn of the devil, say I. Egads, time to call an exorcist.

Vance

Last edited on 01-04-2025 07:57 pm by vnavaret

vnavaret
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Well...

Argh! A hex key socket on my ratchet simply rounded out the hole in the center of the socket screw.

A pipe wrench on the washer accomplished nothing. Wouldn't budge.

Finally, my lizard brain instincts took over, causing my cortex to shrivel up to the size of a raisin. The higher level thought processes ceased, to be replaced by the panted words  "Must...destroy...evil...bolt."

I took out the angle grinder and ground off the head until the washer fell off. What was left of the socket screw backed out with finger pressure.

Now on to the next fastener that will snap, gall, strip or refuse to come loose. Why I abuse myself this way is a mystery.

Vance




Last edited on 01-05-2025 12:28 am by vnavaret

noomg
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Vance,

Not that it's of any consequence now but my later model block also uses the same hex head fastener, looks like it was used instead of a standard bolt for fan belt clearance.

vnavaret
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nomg:

Good to know, guess I will not be using a cap screw to replace it.

Vance

Last edited on 01-05-2025 05:56 pm by vnavaret



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