12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

timing

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Old Nov 10, 2008 | 04:57 PM
  #1  
dodgeman129's Avatar
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is it hard to check the timing, or change it, on my 95 dodge?, i got a haynes manual but it dont tell ya much
 
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Old Nov 10, 2008 | 06:00 PM
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wait for Dr. Evil to respond he should be able to help, you have adjust it right on the pump shaft going thru the gear case
 
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Old Nov 10, 2008 | 06:13 PM
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alright, yea he has helped me before
 
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Old Nov 11, 2008 | 12:38 PM
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Sorry, I was away working yesterday.

To make sure we are clear here - we are talking about the timing of the injector pump (not the timing of the engine). You will need some special tools - mainly a delivery valve socket, a metric dial indicator and a means to hold the indicator. Snapon sells a kit SP500:

http://buy1.snapon.com/catalog/item....store&tool=all

SPX Miller also sells a kit, but I do not know the p/n off the top of my head. As well, a few of our sponsors might be able to set you up as well.


Also, a Barring tool is handy for turning the engine over but you can also use a socket on the alternator pulley and turn the engine backwards (3/4" or 7/8").

To check the timing - you need to pull the number one delivery valve - u need the special socket and a small magnet to pull out the delivery valve. You install the indicator and then bar the engine over watching the lift of the plunger (will be in mm). You compare that to a chart to find out how many degrees youre timing is at.:

http://www.pdrdiesel.com/oldsite/TechPTiming.htm

I have never done this myself but to actually adjust the timing I believe you have to use a puller to remove the timing gear from the pump shaft. Then rotate the gear to advance/retard the timing. When you get the gear to where to want it, install the gear back on the pump shaft and tighten the nut back up. Verify the correct lift by barring the engine over again and comparing the lift to the chart. Do not forget to reinstall the delivery valve.

Sorry, I do not have pics or a how-to on this.



BTW, this is not a "Diesels In Distress" item. Please take a minute to find the correct forum and make youre posts in there (94-98 12V). This forum is for Emergencies.
 

Last edited by Dr. Evil; Nov 12, 2008 at 10:50 AM.
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Old Nov 12, 2008 | 12:34 AM
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i must say Dr, Evil....

out of all the write up's i have seen on p-pump timing, that was the simplest, yet made the most sense to me. i am buying that snap on set when i can afford it. i have been begging to do this myself
 
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Old Nov 12, 2008 | 12:51 AM
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Sorry, I forgot to mention, you will need a basic puller to get the gear off the pump shaft.
 
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Old Nov 12, 2008 | 01:18 AM
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the kit says it comes with a gear puller
 
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Old Nov 12, 2008 | 01:24 AM
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Yeah it does too....I did not realize you can buy the individual pieces from the kit as well.


I just mentioned the other puller to give an option to the snap on kit. One like this would work as well:

http://www.lislecorp.com/tool_detail.cfm?detail=873
 

Last edited by Dr. Evil; Nov 12, 2008 at 02:28 AM.
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Old Nov 12, 2008 | 05:11 PM
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thanks for the info i really appreciate it, im still having a problem with my truck,its a fluke thing that happens like once a week,its hard to explain,thats why i asked about timing of the pump
 
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