Diesel engine RPM measurement

Delta KJ
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3 years 3 months ago #224865 by Delta KJ

Diesel engine RPM measurement was created by Delta KJ

I have a D2 5U that needs the diesel engine low idle and high end RPM adjusted. Historically, I have set the RPMs by sound, but I want to set them more precisely.
I would appreciate any thoughts on the best way to measure the engine RPMs on such vintage tractors?

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Rome K/G
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3 years 3 months ago #224866 by Rome K/G

Replied by Rome K/G on topic Diesel engine RPM measurement

D2 Serial # 5U1-14550 is 1710 high idle rpm, 500 low idle rpm

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D4Jim
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3 years 3 months ago #224870 by D4Jim

Replied by D4Jim on topic Diesel engine RPM measurement

Use a non-contact tach. I have a Harbor freight one for about $40 that works well. Place a piece of reflective tape on the crank pulley and easy to use.

ACMOC Member 26 years
D47U 1950 #10164
Cat 112 1949 #3U1457
Cat 40 Scraper #1W-5494

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trainzkid88
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3 years 3 months ago #225151 by trainzkid88

Replied by trainzkid88 on topic Diesel engine RPM measurement

an optical tachometer is the way to go. not expensive either. the hardest bit is to get the reflective tape to stay on

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Delta KJ
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3 years 3 months ago #225216 by Delta KJ

Replied by Delta KJ on topic Diesel engine RPM measurement

Thanks for the advice.
I picked up a laser tachometer from Harbor Freight ($40) and it worked perfectly... Should have purchased one fifty years ago LOL!

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neil
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3 years 3 months ago #225221 by neil

Replied by neil on topic Diesel engine RPM measurement

You'd need Marty McFly's DeLorean to pull that one off! : )

Cheers,
Neil

Pittsford, NY

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