1938 to 1966 P & A Catalog and Special Information Catalog

[Richard M.]

Re: 1938 to 1966 P & A Catalog and Special Information Catalog

I found more on the AC 109 A Part# is 854273 Also edited in my previous post.

The 1957 P&A states 56-57 used the AC 109A

http://www.gmpartswiki.com/getpage?pageid=67471

Here's a copy of that page. Appears likely that 1958 was the first year changeover to the GF 124 as Gary's book shows,
57PA30_0321.jpg

[Gary C.]

Re: 1938 to 1966 P & A Catalog and Special Information Catalog

Rich,

As you know there were running monthly? changes to the P&A's.

Those monthly changes are not easy to find.

Jan 57 update pages list AC109.

1958 P& A Parts History show 854273 was superseded by part # 854347 on 8/1/57

Gary
....

[Gary H.]

Re: 1938 to 1966 P & A Catalog and Special Information Catalog

Gary,
Where can I find the parts history page that references the superseded filter on 8/1/57?
Gary

[Gary C.]

Re: 1938 to 1966 P & A Catalog and Special Information Catalog

Gary,

In the back of a P&A there's a Parts History Index, which covers:
- Parts removed from service
- Parts transferred
- Parts substituted

Example:
854273 Use 854347 8-1-57 on page 1401 of 1957 P&A effective March 1, 1958

Gary
....

[Richard M.]

Re: 1938 to 1966 P & A Catalog and Special Information Catalog

Rich,

As you know there were running monthly? changes to the P&A's.

Those monthly changes are not easy to find.

Jan 57 update pages list AC109.

1958 P& A Parts History show 854273 was superseded by part # 854347 on 8/1/57

Gary
....

Gary, Yes good points.

Curiously, is there a relation of this filter service parts change to the factory build usage as well? A question would be if the filter changed in service, when (if) did it change at the factory, and which occurred first. I'd think engineering had a reason for the change and had to get it to production first, then the parts depts. But maybe production had to use up the remaining 109's and never got the GF124.

I don't have a 58 AIM to see what filter is used, but based on the service part changing on 8/1/57, and 58 builds started a few months later(Oct 57), I'd wager to say the spec for 58 is the GF-124. Since 57 production ended in Sept, the change on Aug 1st could have applied to very late 57's for the last 2 months builds as well..... I'd think. But as mentioned maybe it never got there and they used up the old stock of 109s.

Rich

[Gary H.]

Re: 1938 to 1966 P & A Catalog and Special Information Catalog

Rich.

I agree that the '58s would have had the first GF-124 filters.

It might be a mystery as to exactly when this happened.

BTW, the screenshot that Gary posted, #31, of the '58 page, could you find it and post a better image?

I'm having a difficult time working in the wiki website. Thanks..

[Gary C.]

Re: 1938 to 1966 P & A Catalog and Special Information Catalog

Rich,

- 1957 AIM - no filter shown in either Sect 6 1-7/57 or RPO 469 1
- 1958 AIM; Sect 6 Sheet 3.0 6-12-57 lists 854328 & 854391 Opt Filter Assy
Sect RPO 469 Sheet 1.0 list 854391 9-24-58 part added

Gary
....

[Ronald L.]

Re: 1938 to 1966 P & A Catalog and Special Information Catalog

This is a great idea.
The unspoken value in having this point in time, is part number research.
Things like PCV valves etc helps to narrow down changes like the 736 PCV valve for the SHP engines.

Like you would not find it in a Sept 65 dated book because the part did not exist in 1965.

Neat find.

Maybe NCRS should digitize it and make it available to all.

[Richard M.]

Re: 1938 to 1966 P & A Catalog and Special Information Catalog

Rich.

I agree that the '58s would have had the first GF-124 filters.

It might be a mystery as to exactly when this happened.

BTW, the screenshot that Gary posted, #31, of the '58 page, could you find it and post a better image?

I'm having a difficult time working in the wiki website. Thanks..

Gary's scan is real low resolution. I tried to save and view zoomed but it's not very readable. Maybe send him a email/PM for a better resolution copy he can email you.

Yes gmpartswiki is often very slow and down quite a bit. I'll see what I can find.... Well, It's really slow right now.

Rich,

- 1957 AIM - no filter shown in either Sect 6 1-7/57 or RPO 469 1
- 1958 AIM; Sect 6 Sheet 3.0 6-12-57 lists 854328 & 854391 Opt Filter Assy
Sect RPO 469 Sheet 1.0 list 854391 9-24-58 part added

Gary
....

So in 1957 the filter was likely installed at Flint? Intresting.

Just when I thought the GF-124 was used on 58's, it now appears it was something else. More numbers to look up......

854328 not there...

854391 .... HERE

Supersession page. Says 854391 ASM (I have no idea what ASM means)

This is a great idea.
The unspoken value in having this point in time, is part number research.
Things like PCV valves etc helps to narrow down changes like the 736 PCV valve for the SHP engines.

Like you would not find it in a Sept 65 dated book because the part did not exist in 1965.

Ron I'm still working on trying to get it in digital form at a reasonable cost. Other things going on keeping it on the back burner for now.

[Cecil L.]

Re: 1938 to 1966 P & A Catalog and Special Information Catalog

I have an original copy of the 1959 Special Information Catalog and find it very useful. It has all the illustrations and also supplementary data for each line including hardware and retainer parts with numbers and pics, charts of all generator useage, common body panel parts, exhaust parts, bearing charts, brake parts and kit parts to name a few.