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Old 05-17-2012, 11:55 PM   #1 (permalink)
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Replacing injection pump need timing help!!

Hey everyone I am about to replace the pump on my 95 motor and am needing help. I understand most everything other than setting the motor and installing the timing pin in the pump gear under the pump and setting up the piece that goes in the side of the pump.. (I read and saw it in my Haynes manual) the part that I'm lost on is if I change the pump timing. How would both the timing pin under the pump and the fuel injection timing pin in the side of the pump line up If I have the injection timing advanced... It might just be one of those things I am getting ahead of myself on but any help is appreciated... Thanks!
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Old 05-18-2012, 12:18 AM   #2 (permalink)
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time the pump where you want it using the engine to turn the pump, then pop the gear, then put the engine a tdc. if you have a dial indicator kit , forget the pump even has a pin IMO. also it is worth the time and little effort to find tdc using the drop valve method in the tech articles...trust me on the drop valve
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Old 05-18-2012, 12:23 AM   #3 (permalink)
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were the timing pin goes into the pump the plate it slides into is adjustable, if you wanted to set the pin up when you have the pump off the truck (easiest) dial indicate the disired timing loosen the two bolts on the plate and move it so the pin slides in. your pump would be pin timed at (??*)
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Old 05-18-2012, 11:27 AM   #4 (permalink)
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Read the tech articles> 94-98 Tech Articles - Dodge Cummins Diesel Forum
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Old 05-18-2012, 01:01 PM   #5 (permalink)
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Still doesn't help me. My timing is adanced to 20.5 degrees I'm trying to find out how to swap pumps without setting my timing to stock on the new pump.... I.e. if I swap this tump and set the pump to TDC without putting the piece in the cam gear when i pull it out. If I set the new pump to TDC with it be timed at 20.5 degrees too if both pumps are pin times at 20 degrees from the factory? Thanks
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Old 05-18-2012, 02:56 PM   #6 (permalink)
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You have to pin the engine then pin the pump bolt it on and go through the timing procedure. Different pumps have different timing / plunger lift settings.
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Old 05-18-2012, 08:42 PM   #7 (permalink)
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If both the old and new pumps are timed to 20 with the pin on the side of the pump locked then the new one will stay at 20 as long as you don't turn the crank at all between removal and installation.
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Old 05-19-2012, 08:50 AM   #8 (permalink)
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Will this help you?

Timing in 40 minutes (P7100)

Floyd
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Old 05-19-2012, 10:09 AM   #9 (permalink)
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We set pump at TDC and put the pin in the pump and popped it off the crank when I put the new pump I'll make sure it's pinned when I tighten the nut.
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Old 05-19-2012, 11:46 AM   #10 (permalink)
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Originally Posted by illflem View Post
If both the old and new pumps are timed to 20 with the pin on the side of the pump locked then the new one will stay at 20 as long as you don't turn the crank at all between removal and installation.
thats what i'd do...
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Old 05-19-2012, 11:49 AM   #11 (permalink)
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Quote:
Originally Posted by levi_plummer View Post
Hey everyone I am about to replace the pump on my 95 motor and am needing help. I understand most everything other than setting the motor and installing the timing pin in the pump gear under the pump and setting up the piece that goes in the side of the pump.. (I read and saw it in my Haynes manual) the part that I'm lost on is if I change the pump timing. How would both the timing pin under the pump and the fuel injection timing pin in the side of the pump line up If I have the injection timing advanced... It might just be one of those things I am getting ahead of myself on but any help is appreciated... Thanks!
the pin in pump itself is set whether it be factory specs or if you have had a pump shop mess with it they will change it if you advance the timing beyond the pump specs then the TDC pin and pump pin will no longer line up those pins are for a starting point to advance it for example if your pump is set to 11.5 degree timing when both the pump is pinned along with the TDC pin your engine will be at 11.5 degrees which wopuld be your starting point then you advance it from there to your desired spec this will no longer allow the pins to be pinned at the same time they are for reference of stock specs if you set to say 17 degrees then later on decide to got to 20 degrees advanced its good practice pinn time the motor back to stock then advance it to 20 dgrees advance instead of gong from 17 to 20 if this makes any sense to you
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