Shift pattern cast

Farmall H, HV & Super H, 300 & 350, 1939-1958

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havoc1482
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Shift pattern cast

Postby havoc1482 » Fri Jul 31, 2015 11:43 pm

So, I've always wondered this. We have two H's at work and both of them lack a shift pattern stamp on the deck. I don't know the years of the tractors, but whats the reason behind the lack of pattern? Every year we have to put a piece of tape on the deck with the shift pattern so the other workers don't confuse 1st with 3rd or something of that nature.
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Rodney51Cub
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Re: Shift pattern cast

Postby Rodney51Cub » Sat Aug 01, 2015 5:19 am

Both of my H's have a shift pattern decal on the light bar.
Do not know if that is where it belongs but that is where my Dad put them.

Rodney 8)

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John *.?-!.* cub owner
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Re: Shift pattern cast

Postby John *.?-!.* cub owner » Sat Aug 01, 2015 11:14 am

As I understand it the pattern was cast into the decks of earlier models, such as my 41, but on later models when the deck castings were upgraded, it was left off and a decal on the light bar was used.
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Re: Shift pattern cast

Postby Rodney51Cub » Sun Aug 02, 2015 7:05 am

After reading Johns post I went out to my 40 H to double check for the cast shift pattern. It did not have one. I found a 8536D number in the casting. According to the H parts manual on the Case IH web site part number 6854DAX rear frame cover serial number 501 - 15697 and 8536DEX serial number 15698 - up. On another page in the parts manual it has a different part number for the cover, 355189R2.

Not trying to cause a debate or anything, just putting out the information. Do not know what is on my 44 H since it is still at my mom's house, will have to look at the parts tractor also. If I remember right the parts tractor is a 46.

John, I would be interested to know what number is in the casting on your H.

Rodney 8)

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Re: Shift pattern cast

Postby Jim Becker » Sun Aug 02, 2015 11:48 am

Rodney51Cub wrote:After reading Johns post I went out to my 40 H to double check for the cast shift pattern. It did not have one. I found a 8536D number in the casting. According to the H parts manual on the Case IH web site part number 6854DAX rear frame cover serial number 501 - 15697 and 8536DEX serial number 15698 - up. On another page in the parts manual it has a different part number for the cover, 355189R2.

They probably eliminated the shift pattern after they realized nobody could see it clear down on the platform. Sometimes very minor changes did not get a part number update. The pattern was probably eliminated when new part patterns were made. Any edition of the parts catalog will list the latest available version of any given part. Sometimes they will list another number as a substitute.

Part 6854DA would have been an updated version of 6854D. Serial 15698 was when they changed to the pipe frame seat. Earlier tractors used the platform with the lowered center section for the early seat. The later style started as 8536D and went through 5 revisions to get to 8536DE. Note that the "X" suffix on the parts indicate an assembly. Numbers without the "X" would be only the machined casting. In this case, it appears that the assembly had a couple plugs in place.

355189R2 was the second version of 355189R1. The "R" numbers didn't come along until about '44 or so. It was part of the reverse operation package. It was needed to reverse the tractors for cotton pickers. Cotton pickers didn't come along until after WWII. The "D" numbered parts continued to be used on regular tractors through all production of the H.

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Re: Shift pattern cast

Postby tinnerjohn » Sun Aug 02, 2015 7:57 pm

Jim's reasoning makes sense, but I like mine better. I figure since its a normal H pattern they engineers thought the average farmer was smart enough to figure it out and remember it! Unlike the Ford 8N's and others that have a pattern that looks like they tossed the gears in the box and where they landed was where they stayed. John

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Re: Shift pattern cast

Postby Jim Becker » Sun Aug 02, 2015 8:30 pm

tinnerjohn wrote:. . . I figure since its a normal H pattern they engineers thought the average farmer was smart enough to figure it out and remember it! . . .

In that case, they wouldn't have added the decal with the shift pattern.

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havoc1482
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Re: Shift pattern cast

Postby havoc1482 » Sun Aug 02, 2015 10:35 pm

I still don't understand what was so bad about the deckplate pattern. I don't understand how anyone wouldn't be able to see it.
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Re: Shift pattern cast

Postby tinnerjohn » Sun Aug 02, 2015 10:49 pm

Your tractors must stay cleaner than any I ever used. It seems like every one I've driven had a 1/4 inch of dirt, dust and grime on the platform, as well as a chain and who knows what else covering the platform. The decal on the light bar or fuel tank was/is easy to see and probably cheaper than putting the pattern in the mold. John

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Re: Shift pattern cast

Postby Scrivet » Sun Aug 02, 2015 11:04 pm

Is the top of the transmission cover machined? I know they get worn smooth where your feet set, but isn't the whole top smoother than rough castings like say, the bell housing? Maybe the shift pattern was one less thing to machine around?

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Re: Shift pattern cast

Postby Matt Kirsch » Mon Aug 03, 2015 8:04 am

There had to have been dozens, if not hundreds, of deck cover patterns made over the course of production. Between revisions and normal wear and tear, patterns didn't last forever. If you saved an hour of the pattern maker's time by not including the gearshift pattern, it added up.

Besides, the stickers made it redundant.

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Re: Shift pattern cast

Postby Dusty B » Sat Oct 03, 2015 8:51 pm

Seems to me that some of the shift pattern decals were on the gas tank?? Just behind the fuel warning decal. Dusty B
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Re: Shift pattern cast

Postby Dusty B » Sat Oct 10, 2015 7:18 pm

Dusty B wrote:Seems to me that some of the shift pattern decals were on the gas tank?? Just behind the fuel warning decal. Dusty B

Actually the one on my '45 is on the gas tank!! Very easy to see!! Dusty B
Grandpa's '41 B
'56,,'57,'59,'71 Cub
'51 Super C
'55 Case SC
Fairbanks-Morse 3KW Generator
Dad's DB garden tractor
'48 DeSoto
'31 "A Coupe
'51 Ford PU
'55 Dodge PU
God looks out for those of us who don't know how to look out for ourselves!


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