Lost rpms!

[redass73]

hey fella's I need your help. I changed the "button" in my injector pump this weekend and lost 200 rpms. wont get above 1900 rpm's went from a #27 to a # 10. is that my trouble or could I have messed up the shim stack.

 

[cranetruck]

Seems like I need to learn another language......

 

[redass73]

sorry It's early for me..got an 816 with the cummins. my desiel guy told me to remove this cone shaped piece from my IP there is a shim stack[told it governs max rpm's] and a small little 'puck' in there. he said to get one with a smaller number stamped in it. he said the smaller one would give a lillte smoke and a tad better throttle response. it does put out a little black smoke but the revs are gone..

 

[AMGeneral]

If memory serves,you have to add a thicker shim to increase spring pressure on the governer spring to increase your max RPMs,(I could be wrong here).Is a #10 shim thicker than a #27?It's been quite a while since I was in a PT pump.

 

[DaveP]

from my expeirence with the 250, a pyrometer is very important when turning these up. we bumped mine up a tad and the exhaust temp gets hot and it gets hot quick. must be due to the lack of piston coolers.

 

[WillWagner]

Add a few more shims. Make sure the snap ring is in the groove.

 

[M1075]

We need some more tech on the Cummins 250 and 400. I have a few motors than want "improvement".

 

[supermechanic]

Search thread "more power" Nov. 14, 2005
Link
http://www.steelsoldiers.com/index.php?name=PNphpBB2&file=viewtopic&t=3334&highlight=