What is needed to check and set timing on p-pump?

[RonA]

I just purchased the Metric drop indicator and stuff from Snap-On. I was told there is a device that attaches to a timing light that will sense the pulse through the injector line and give you a strobe like a gas motor. Then you machine degree wheel markings on the balancer and can then check your timing easily. Where does one find this device?

RonA

 

[jetenginedoctor]

I don't think that's a very practical method of determining pump timing. If it were, I'm sure that Cummins would have a similar procedure instead of the current dial indicator method.



Your Mileage May Vary, of course.



BK

 

[mdivincentis]

Snap On has one, Ron. The PN is MT257A. The thing retails for $320. 45 though. :--)

And that's off an old (2003) price list.



Matt

 

[nickleinonen]

the pulse adapter works real well, but it is expensive... just clamp it to #1 hp fuel line and clip on your gasser timing light and you're good to go. . just don't try adjusting the timing while the engine is running... big NO NO on that.

 

[RonA]

I copied the chart off the PDR site to translate indicator reading to timing, but You are supposed to know what kind of pump it is. That is the problem. I've given the numbers to a pump shop and they aren't sure. So I figure it might be better to have two ways of checking timing. Thank you for the part number, I'll shake Brandons tree and place an order.

RonA

 

[bighammer]

I bought this one and it has worked pretty well. The clamp on the fuel line is VERY sensitive and can be a PIA to get just right. Works well though.

 

[HBrunton]

mac tools also offers one, i have bought one and have only used it once. it does work well if you have a engine that has the degree marks on the balancer or the flywheel. I personally am a fan of dial indicator or spill port timing methods. This tool is good for checking timing and troubleshooting but does nothing really to help setting the timing, if you are going to use it for that then you are playing a game of trial and error til you get it right. It would work ok on engines that have slots in the mounting surface of the pump or on external pump drive coupling as found on certain engines (isuzu,hino,etc... ) Hope this helps, also on our engines if you have your balancer degree marked, remember that it will always have to be re installed in exactly the same position as it was taken off of the crankshaft. Ours will go on in any position

 

[RonA]

I have been doing alot of reading and asking questions about timing. Interesting how opinions vary on where to set it. Some say 15, some say much higher. I guess it will be best to first establish where it is.

RonA