According to Tractor House and Nebraska test 716 the rated RPM is 1850, 10% over would be 2035, 20% over would be 2220 RPM.

http://www.tractordata.com/farm-tractors/000/0/5/54-john-deere-435-engine.html

http://digitalcommons.unl.edu/cgi/viewcontent.cgi?article=1381&context=tractormuseumlit

Regards
Rich
 
BTW NATPA does not have a listing for a 435, the 40 is there and the 420 but not the 435.

http://www.natpa.com/rpm_chart_2007.htm

Rich
 
I don't have a horse in this race but the 10% and 20% are generally (local rules may vary) taken on top of the high idle rpm, not the rated rpm. Example: Oliver 88 rated rpm is 1600, high idle is 1750rpm, +10% is 1925, +20% is 2100rpm. This matches with the numbers shown in the NATPA and USAP RPM charts.
 
Good point, the references I found do not have a high idle value, the request was for rated idle, which is 1850. If high idle is rated plus 10%, then high idle would be 2035.

Rich
 
The "S" version of the 2-53 was rated by DD for full load rpms of 2400rpm with fast idle 10% over. Deere lowered rpms to obtain 540rpm pto.
 
I tried to call a few minutes ago. Your voice mailbox is full. My number is five 1 seven - 2 nine four - 0 8 seven two
 
There are several instances, where the tractor manufacturer decided to rate the maximum engine RPM less than the engine manufacturer. MH Chrysler and Continental engines would be good examples, if the we are going to use the engine stand alone ratings for DD engines in tractors, then we should allow others to do the same.

BTW the DD engine in the 435 was limitted to 1975 RPM at high idle by John Deere.

Rich

Rich
 

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