Author Topic: 6" Crescent Adjustable marking "H633" and repair question  (Read 403 times)

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Offline RubiconJK

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6" Crescent Adjustable marking "H633" and repair question
« on: December 06, 2017, 04:13:07 PM »
Hello, I have a bad habit of bringing old 6" adjustable wrenches home with me from the flea markets!  Last weekend I bought an old 6" Crescent that has the mark "H633" on the handle just under the knurl.  I've not seen that particular mark on other Crescents and wondered if anyone knew the significance of this mark?  The mark is raised in the wrench forging and is a consistant size/font with the rest of the lettering on the wrench.

Also, the teeth on the jaw of this wrench are stripped and I'm having a harder than normal time of removing the pin screw.  Any suggestions for methods you guys use for removing stubborn pin screws from these old wrenches?

Thanks!

Offline Northwoods

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Re: 6" Crescent Adjustable marking "H633" and repair question
« Reply #1 on: December 06, 2017, 04:18:44 PM »
What will you do if you are able to remove the moving jaw?  Or is it the wheel that is damaged?
The ORIGINAL Northwoods.

Offline RubiconJK

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Re: 6" Crescent Adjustable marking "H633" and repair question
« Reply #2 on: December 06, 2017, 04:26:13 PM »
The knurl (wheel) is fine.  The moving jaw needs replaced.  I have other donor wrenches and parts but have to remove the stubborn pin screw first.

Offline lptools

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Re: 6" Crescent Adjustable marking "H633" and repair question
« Reply #3 on: December 06, 2017, 04:46:40 PM »
Hello, After a good soaking in PB Blaster, or the like, I try to turn the screw in as far as possible. Then I look for burrs that would hinder removing the pin. The burrs are usually what get in the way, (plus rust), often times the sides of the heads served as an FAT (fine adjustment tool). Regards, Lou

Offline RubiconJK

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Re: 6" Crescent Adjustable marking "H633" and repair question
« Reply #4 on: December 07, 2017, 12:47:30 PM »
Thanks Lou! I understand the FAT usage!  I'll give the PB Blaster soak a try.

Offline RubiconJK

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Re: 6" Crescent Adjustable marking "H633" and repair question
« Reply #5 on: December 08, 2017, 07:54:37 PM »
Here is a pic of the H633 marking.  Any ideas what this marking might be or has anyone else ever seen this?

Offline RubiconJK

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Re: 6" Crescent Adjustable marking "H633" and repair question
« Reply #6 on: December 09, 2017, 11:22:26 AM »
On the "H633" marking, was told by someone (Former Crescent Jamestown employee) that this may be a date code.  H being the 8th month, 63 year and 3rd day.  Can't confirm this is the case, but makes as much sense as anything else I've learned in researching this.  Also strange that this code seems to be uncommon for other Crescent branded adjustables of the same era.
« Last Edit: December 09, 2017, 01:49:23 PM by RubiconJK »

Offline RubiconJK

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Re: 6" Crescent Adjustable marking "H633" and repair question
« Reply #7 on: December 11, 2017, 08:49:39 PM »
After a good long soak, the stubborn pin screw is out!  I was hoping I could file out the teeth on the jaw and use it again, but it is too far gone.  I will have to get one of my donor wrenches out and replace the jaw.

Offline Northwoods

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Re: 6" Crescent Adjustable marking "H633" and repair question
« Reply #8 on: December 11, 2017, 09:24:46 PM »
Well done. Those pins are hard to deal with. Exactly how did you get it out?
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Offline Lewill2

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Re: 6" Crescent Adjustable marking "H633" and repair question
« Reply #9 on: December 12, 2017, 06:18:17 AM »
Some are screw type pins that are actually threaded, many of the newer ones are just pins that are pressed into a blind hole and would have to be drilled out.

Offline RubiconJK

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Re: 6" Crescent Adjustable marking "H633" and repair question
« Reply #10 on: December 12, 2017, 06:52:27 PM »
Basically let it soak for a couple days.  Made sure there were no burrs blocking the screw pin from coming out and then began working the screw back and forth anytime I was out in the shop doing something else.  Once it started moving a bit, I hit it with WD40 and gradually after repeating this process it finally came out.  For as many of these as I've taken apart, this was one of the more stubborn.  One of the tricky things with getting the screw loose was having a screw driver that is small enough to fit the screw, but that won't deform (twist) while turning.  I finally wound up using an old flat head bit and grinding it down so that it would just fit into the groove of the screw.  I could take it out of the bit driver handle and also peck at it with the hammer during this process.

Offline leg17

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Re: 6" Crescent Adjustable marking "H633" and repair question
« Reply #11 on: December 13, 2017, 07:00:33 AM »
On the "H633" marking, was told by someone (Former Crescent Jamestown employee) that this may be a date code.  H being the 8th month, 63 year and 3rd day.  Can't confirm this is the case, but makes as much sense as anything else I've learned in researching this.  Also strange that this code seems to be uncommon for other Crescent branded adjustables of the same era.

If it really is a date code, it would be seen a lot more often than just this once.
Day by day date coding is most often found where liability issues might arise, such as with food or medicines.

Also, there appears to be no sign of welding and remarking.

Most other major tool companies that date coded confined it to the year.
And, the year marking was a 'second operation', not imbedded in the primary process.

I expect this was some unique application.
Could be a test of die material, die design, test of wrench material, minor design modification, or some such that needed a way to pick out these wrenches from all the others.

Sure hope somebody will know the story.

Offline RubiconJK

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Re: 6" Crescent Adjustable marking "H633" and repair question
« Reply #12 on: December 13, 2017, 02:47:49 PM »
Leg17 that makes sense too.  As I had mentioned earlier, I've owned many, many of these wrenches (similar vintages) and can't recall ever seeing a mark like this before.  Other than the former Crescent Jamestown employee's comments, the only other thing I've learned was directly from Crescent's current owner Apex Tool Group.  I sent a message to them via their website asking about the mark.  A day or two later, I was told that information was proprietary.  Either that means it was some sort of test item as you mentioned and they didn't want to divulge the purpose for the test or they just didn't want to research it and this was the shortest response they could give me so I would go away!!  Lol!