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D4 workshop manual 6U/7U

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10 years 5 months ago #94388 by ianoz
Replied by ianoz on topic D4 workshop manual 6U/7U
OK , Thanks for the reply Eddie .
Another question for you Mate .
Our D47U is a 1952 model .The 29A seems to rev Higher than it .Were they opened up a bit in the later tractors .Is there a Horsepower difference between the 2machines ?

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10 years 5 months ago #94391 by edb
Hi Ian,
yep, D4's S/No 6U1--6U10321 and 7U1--7U29423 were 1525rpm HI/ & 51fwhp@1400rpm Full Load
S/No 6U10322--6U11581 and 7U29424--7U37284 were 1745rpm HI & 58fwhp@1600rpm FL
S/No 6U11582--up and 7U37285--up were 1735rpm HI & 60.5fwhp@1600rpm FL
These figures from my old rack book chart for these machines current at date 8-61.
Cheers,
Eddie B.

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10 years 5 months ago #94392 by ianoz
Replied by ianoz on topic D4 workshop manual 6U/7U
OK , Thanks Eddie ,no wonder with those extra horses , it did so much better than the 7U and Johns AC HD5.

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