66 K/O Hammer

[William L.]

Can some please post a picture of an original 65/66 K/O Hammer.
These are pictures of a Long Islands repo hammer. From memory I think its dead nuts on but I would like to be sure. The 1/4 " hole that goes through the handle is 7/8 of an inch from the head of the handle Total weight is
4lbs 2 & 3/4oz. If you have a picture of an original that would be great.
Thanks Bill

[Mike M.]

Re: 66 K/O Hammer

lack of weld beads at junction of head and shaft argue for original style attachment of head to shaft. mike

[William L.]

Re: 66 K/O Hammer

lack of weld beads at junction of head and shaft argue for original style attachment of head to shaft. mike

Mike; I'm not sure but I think 63/64 are welded & 65/66 are not?????

[Alan D.]

Re: 66 K/O Hammer

The first KO hammer was pn 3859067 which did call for a weld on both sides of the handle. It was later replaced by pn 3871308 which did not have the weld. According to Adams the first was used into mid 65. Adams has a picture of the prints (do not know page).

[William L.]

Re: 66 K/O Hammer

The first KO hammer was pn 3859067 which did call for a weld on both sides of the handle. It was later replaced by pn 3871308 which did not have the weld. According to Adams the first was used into mid 65. Adams has a picture of the prints (do not know page).

Alan; Thanks it's page 300 of Nolands book. The drawings are there and I think the repo hammer is dead on. But maybe some one can tell me if there is any difference.
Bill

[Michael H.]

Re: 66 K/O Hammer

The first KO hammer was pn 3859067 which did call for a weld on both sides of the handle. It was later replaced by pn 3871308 which did not have the weld. According to Adams the first was used into mid 65. Adams has a picture of the prints (do not know page).

Wasn't there an earlier part number for a 64 hammer shown in the 64 AIM? Pretty sure the number in the 63 AIM was different than the 3859067.
I know the hammer was different than both the 3859067 and the 3871308.

[Jack H.]

Re: 66 K/O Hammer

Noland's section on P48 for 1964 cites narry a word about the supporting, road emergency, hammer... It's in the 1965 section that he talks about the hammer undergoing a running change with the PN being 3859067 from '64-65E and then changing to PN 3871308 for '65L and up.

Differences are two fold:

(1) How the handle is affixed to the mallet end (spot weld=early).

and

(2) The physical size and placement of the 'ventillation' holes in the handle (originally were 0.25" then enlarged to 0.38").

[Michael H.]

Re: 66 K/O Hammer

Noland's section on P48 for 1964 cites narry a word about the supporting, road emergency, hammer... It's in the 1965 section that he talks about the hammer undergoing a running change with the PN being 3859067 from '64-65E and then changing to PN 3871308 for '65L and up.

Differences are two fold:

(1) How the handle is affixed to the mallet end (spot weld=early).

and

(2) The physical size and placement of the 'ventillation' holes in the handle (originally were 0.25" then enlarged to 0.38").

I found it! The original part number for 63 and early 64 was 3819530. The hammer looks different than either of the later issue hammers. Longer handle with a knurled oval section at the grip end.
I expect that the 3819530 number changed to the 3859067 some time in 64 or possibly/likely 65. (it's a 65 number)

[Wayne M.]

Re: 66 K/O Hammer

I expect that the 3819530 number changed to the 3859067 some time in 64 or possibly/likely 65. (it's a 65 number)

Michael --- this is very weird; in my '65 AIM, it shows Hammer assy. 3871308 with revision note #1 that says WAS, on 8-7-64, # 3858067 (or maybe '9067'; my copy is quite faint). My July '65 Rev. P&A30 also shows the '9067' number.

Beside the effective # 3871308 is a handwritten 'NPC C65-97', whatever that means [probably a change authorization].

The 3859067 was the final #; still shows in my Jan '70 P&A30.

Now the weird part is that the number '530' you quote and the '308' number I mention in the '65 AIM show NO parts history revision record .

[Michael H.]

Re: 66 K/O Hammer

Michael --- this is very weird; in my '65 AIM, it shows Hammer assy. 3871308 with revision note #1 that says WAS, on 8-7-64, # 3858067 (or maybe '9067'; my copy is quite faint). My July '65 Rev. P&A30 also shows the '9067' number.

Beside the effective # 3871308 is a handwritten 'NPC C65-97', whatever that means [probably a change authorization].

The 3859067 was the final #; still shows in my Jan '70 P&A30.

Now the weird part is that the number '530' you quote and the '308' number I mention in the '65 AIM show NO parts history revision record .

I found the change from 1st design to 2nd design. The original 63 KO hammer was part number 3819530. It was supplied in production from start to end of 63 MY and likely much of the 64 MY. It was replaced in service in Jan of 65 by the 3859067.

I can find no listing in any parts book or part number change book for the 3871308. I have to guess that the 308 was used on the assy line only and never sold in service.

The 66 AIM shows the 3859067 replaced the 3871308 in production on what looks like 8-28-65.

So, all 63's and early 64 had the 530. Late 64 and possibly very early 65 had the 067. Later 65 had the 308 but at/near SOP of the 66 MY, the 059 returned.

I'll try to find the pic of the 3819530. I don't remember if I still have the hammer. If so, it's probably up in the frozen north.

[Kevin M.]

Re: 66 K/O Hammer

First time I have seen it called "road emergency, hammer" I'll bet this is the only hammer the owners ever used. Was there another hammer for general maintenance like in a shop ?

KM

[Michael H.]

Re: 66 K/O Hammer

First time I have seen it called "road emergency, hammer" I'll bet this is the only hammer the owners ever used. Was there another hammer for general maintenance like in a shop ?

KM

Nope, that was the only hammer GM ever supplied either through production or service.

The GM tool supplier, Kent Moore, didn't have a different one for service either.

[John H.]

Re: 66 K/O Hammer

Was there another hammer for general maintenance like in a shop ?

KM

Not from GM, but plenty of outfits made BIG lead hammers. I used a big Imperial lead hammer (Rockford, Illinois) for many years (they'd re-cast it for you for a nominal charge when you finally destroyed it), and later got a "M u t h e r - Thumper" for the Halibrand spinners on my Cobra.

The Chevy hammer was history after remove/install of one set; didn't take much to bash the lead down to the edge of the steel head tube, although you could re-cast it at home if you had the patience.