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late D4 horsepower
late D4 horsepower
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2 years 9 months ago #235519
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 9 months ago - 2 years 9 months ago #235529
by D4Jim
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 27 years
D47U 1950 #10164
Cat 112 1949 #3U1457
Cat 40 Scraper #1W-5494
Last edit: 2 years 9 months ago by
D4Jim.
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2 years 9 months ago - 2 years 9 months ago #235530
by Fat Dan
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 Member
Traxcavator: 60, 955E 12A08263; 57, 955C 12A04040; 57, 955C 12A03563.
1954 No.12 Diesel Motor Grader 8T14777.
1945 No.12 Diesel Motor Grader 9K9320; 9K9982
1944-46 Adams Model No. 311 Motor Grader
1943 IH T9 Tractor w/ Bullgrader Blade
Last edit: 2 years 9 months ago by
Fat Dan.
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2 years 9 months ago #235538
by bursitis
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 9 months ago #235540
by bursitis
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 9 months ago #235613
by neil
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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late D4 horsepower
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