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  1. Forum
  3. Antique Caterpillar Machinery Owners Club
  5. DISCUSSION
  7. late D4 horsepower

late D4 horsepower

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2 years 7 months ago #235519 by bursitis
late D4 horsepower was created by bursitis
did the D4 7U increase in horsepower as the series matured?  lets say a 1957 model five roller D4 compared to a 7U of earlier years?  did the transmission group stay the same all the way through?

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2 years 7 months ago - 2 years 5 months ago #235522 by phildirt
Replied by phildirt on topic late D4 horsepower
----deleted----
Last edit: 2 years 5 months ago by phildirt.
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2 years 7 months ago #235524 by Old Magnet
Replied by Old Magnet on topic late D4 horsepower
Answer can be found in the rack setting charts (bible)

 
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2 years 7 months ago - 2 years 7 months ago #235529 by D4Jim
Replied by D4Jim on topic late D4 horsepower
Speaking of the D315 engines, I can notice a lot of difference in the horsepower and sound of my 112 3U (1949) and my D4-7U (1950) particularly the RPM's. 112 much higher pitch.

Thanks OM.
ACMOC Member 25 years
D47U 1950 #10164
Cat 112 1949 #3U1457
Cat 40 Scraper #1W-5494
Last edit: 2 years 7 months ago by D4Jim.
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2 years 7 months ago - 2 years 7 months ago #235530 by Fat Dan
Replied by Fat Dan on topic late D4 horsepower
Old Magnet, footnote # 12, I assume* must be the break between 955C and 955E at 12A5793? that's good to know the rack setting are different. Thank you.
*yes I know...
ACMOC Membership
955E 12A08263; 955C 12A04040; 955C 12A03563.
No.12 Diesel Motor Grader 8T14777.
No.12 Diesel Motor Grader 9K9320
Last edit: 2 years 7 months ago by Fat Dan.

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2 years 7 months ago #235531 by Old Magnet
Replied by Old Magnet on topic late D4 horsepower
The other footnotes...

 
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2 years 7 months ago #235538 by bursitis
Replied by bursitis on topic late D4 horsepower
they added quite a bit of horsepower from the early 6U--7U series to the later. please explain the 5H607 gear group?
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2 years 7 months ago - 2 years 5 months ago #235539 by phildirt
Replied by phildirt on topic late D4 horsepower
----deleted----
Last edit: 2 years 5 months ago by phildirt. Reason: additional/ changed information
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2 years 7 months ago #235540 by bursitis
Replied by bursitis on topic late D4 horsepower
1st-1.34 2nd-1.85 3rd-2.72 ?? is 5th 5.37? is there no 4th? i guess there is another lever that makes reverse Hi/Lo?
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2 years 7 months ago #235613 by neil
Replied by neil on topic late D4 horsepower
Phildirt put the shift pattern just above where he wrote "I mostly see...." There's only one shifter, and instead of a fifth gear, it has LR and HR
Cheers,
Neil

Pittsford, NY
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  1. Forum
  3. Antique Caterpillar Machinery Owners Club
  5. DISCUSSION
  7. late D4 horsepower
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