What D8 do I have

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forbesmathews

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I have D8 Serial Number 9A1798. It was built in 1958. I did not know there was a 9A. It is a great running low time ex military machine and I am trying to adjust the brakes and steering clutches. It looks like I will need a trained snake with a crooked wrench. Anybody know the best way ? How would I get a manual for this machine ?
Thanks in advance,
Forbes

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Sat, Apr 27, 2024 12:50 AM

D4Jim

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The serial number book shows it as a 1956.
Ebay has some repro manuals for about $75 but maybe someone on the board has repair, operators, parts etc.

Good luck

Cats Forever

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Sat, Apr 27, 2024 1:19 AM

forbesmathews

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Reply to D4Jim:

The serial number book shows it as a 1956.
Ebay has some repro manuals for about $75 but maybe someone on the board has repair, operators, parts etc.

Good luck

Thanks Jim,
What did you enter in Ebay search ? D8 9A ?

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Sat, Apr 27, 2024 2:27 AM

bruce oz

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Reply to forbesmathews:

Thanks Jim,
What did you enter in Ebay search ? D8 9A ?

equivalent serial number 14A3861-up
Attachment

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Sat, Apr 27, 2024 3:26 AM

forbesmathews

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Reply to bruce oz:

equivalent serial number 14A3861-up

Is the 9A different than the 14A ? It has wet clutches but I can't find the brake adjusting screws numbers 1 & 2 . I have the seat off and both covers removed.

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Sat, Apr 27, 2024 3:52 AM

bruce oz

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Reply to bruce oz:

equivalent serial number 14A3861-up

CHANGED INFO TO WET CLUTCHES
Caterpillar D8 Crawler Service Manual (S/N 9A1301-9A2000) (jensales.com)

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Sat, Apr 27, 2024 4:25 AM

seiscat

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Reply to forbesmathews:

Thanks Jim,
What did you enter in Ebay search ? D8 9A ?

I have a OMI for the 14A D8 for sale in the For Sale/Wanted section for $5 + postage..
Craig
[attachment=76182]IMG_20240322_0001.jpg[/attachment]

[attachment=76183]IMG_20240322_0010.jpg[/attachment]

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Sat, Apr 27, 2024 4:50 AM

Deas Plant.

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Reply to seiscat:

I have a OMI for the 14A D8 for sale in the For Sale/Wanted section for $5 + postage..
Craig
[attachment=76182]IMG_20240322_0001.jpg[/attachment]

[attachment=76183]IMG_20240322_0010.jpg[/attachment]

Hi, forbesmathews.
What you have there is the military version. 9A is the same serial number that most if not all of the SD8 LGP tractors that went to Greenland and Antarctica were based on. Mary Ann, the first of the Antarctic SD8 LGPs, often called 'stretched D8s, was built in 1953, when Cat was changing over from the 2U series to the 13A, at least 2 years before the 13A was dropped for the 14A model, which is what I understand the 9A was based on.

Hope this helps..

Just my 0.02.

You have a wonderful day. Best wishes. Deas Plant.

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Sat, Apr 27, 2024 5:19 AM

forbesmathews

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Reply to seiscat:

I have a OMI for the 14A D8 for sale in the For Sale/Wanted section for $5 + postage..
Craig
[attachment=76182]IMG_20240322_0001.jpg[/attachment]

[attachment=76183]IMG_20240322_0010.jpg[/attachment]

I will take the book ! Please give me a buzz 678 571 7301. If I don't answer please text me things get pretty noisy here and sometime I don't hear the phone ring.

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Sat, Apr 27, 2024 5:43 AM

forbesmathews

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Reply to Deas Plant.:

Hi, forbesmathews.
What you have there is the military version. 9A is the same serial number that most if not all of the SD8 LGP tractors that went to Greenland and Antarctica were based on. Mary Ann, the first of the Antarctic SD8 LGPs, often called 'stretched D8s, was built in 1953, when Cat was changing over from the 2U series to the 13A, at least 2 years before the 13A was dropped for the 14A model, which is what I understand the 9A was based on.

Hope this helps..

Just my 0.02.

Thanks that is great to know.

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Sat, Apr 27, 2024 5:44 AM

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