Injection pump removal and install 480ce 6tca

[Lawrence Ross]

Hi all need some help with the timing of my injection pump replacement
engine is a 2004 480ce 6cta I am looking at cummings manuel and they talk about lining up the pump lock pin and the camshaft lock pin at top dead center. is that all there is to it??
Just line up the pins remove and install the pump ?
I understand about tightening the pump drive gear to the pump shaft.
just want to make sure i have the timing correct

Thanks
Larry

Topic

[sconrad208]

Larry,

where did you send your pump to get rebuilt?  did yours have the electronic governor?   I need to send my pump out for rebuild.  also, wanted to confirm the 23 degree setting for this p7100 pump.  

thanks

steve

[Tony Athens]

All the info / screen shots provided from QSOL was specific to automotive and industrial………………….

[Lawrence Ross]

update

jjm I used the timing pin on the engine cam shaft and the timing tool in the injection pump to lock the pump.
Make sure you are on number one top dead center on compression stroke then i locked the cam pin and installed the pump make sure you use a new oring and new oil seal o ring’ I filled the pump with some oil throw the hole for the timing plug when i took it out to turn the locking tool around.
the rebuilder that tried to repair my old pump said that by the time you crank the engine over to bleed th air out and get the motor running the oil pressure would fill the pump with oil.

wondering why you had to change your pump how many hours on it??
Larry

[JJM]

Same situation

Lawrence Ross wrote:

Tony I have attached pictures for you I was off the boat yesterday took a 5 hour drive to the injection shop to drop off the pump He told me to set the motor up with the pin in the pump and the pin in the cam and forget the book

Just don’t know why Cummins has it different? I did mark the damper both ways and as you can see from my picture the marks come out in different positions

Larry.

Hey Larry. I am in the same scenario right now timing new injection pump. How did you end up going using the indicator ? Also did you remove the AFR cover and fill pump with oz of engine oil before firing ? Appears this is needed to prevent premature wear to governor but ours has electronic governor so not sure.

[Lawrence Ross]

Tony I have attached pictures for you I was off the boat yesterday took a 5 hour drive to the injection shop to drop off the pump He told me to set the motor up with the pin in the pump and the pin in the cam and forget the book
Just don’t know why Cummins has it different? I did mark the damper both ways and as you can see from my picture the marks come out in different positions
Larry.

[gary]

Hey Larry that explains it makes it for a simple install. Thank you for the info!

[Lawrence Ross]

Gary according to the rebuilder they set the injection offset into the pump which is 23 degrees

Larry

[gary]

I’m confused there is a advanced timing spec on these engines by setting pump at tdc how are you getting advance timing? Hope tony chimes in.

[Lawrence Ross]

Tony I sent you the pictures hope you got them

took the pump to the rebuilder yesterday and he told me just use the pin method

don’t know why Cummins talks about the other way

the piston method does come out with a different TDC then the pin method

the manuel is bulletin 3666003 20-april-2007
Larry

[gary]

This is what I found on quickserve service

[Tony Athens]

the cummins manual says not to use the pin method for marine engines use it only for automotive and industrial applications

Any chance you can take a clear pic of this the the manual you are referring to and send a manual / bulletin part number ( back cover lower edge) ..

I started this “Cummins thing” in 1985, been to all the schools that mattered, and this one has me scratching my head—-Luckly, I still have hair, but I would like to save it..

Tony

[Lawrence Ross]

Thanks Tony
I understand about the pins what bothers me is the cummins book says not to use the camshaft lock pin to find TDC but to turn the engine over with the intake valve held open by adjusting the screw to keep it open turn slowly until piston touches the valve and make a mark on the damper then turn the engine the opposite direction until the piston touches again and mark the damper the difference between the to 2 marks should be TDC.

when i do that the difference between that method and using the two pin method is about 5 degrees on the damper not sure which marks to use to install the rebuilt pump was hoping someone could clarify this for me.

the cummins manual says not to use the pin method for marine engines use it only for automotive and industrial applications
when i took the pump out I used the pin method and the pump pin went in ok as well as the cam pin
thus engine always used more fuel than the other engine just for infromation??
.

Thanks Larry

[Tony Athens]

Larry,

I do not think this is something that be explained in “words” very easy…

There are two timing pins involved.. One that sets the engine crank & cam where it belongs, and one puts the pump where in belongs.. The gear has no key and needs to be tightened in a 2 step process, BUT, I learned something the hard way about 20 yrs ago. Before you do first low torque tightening, give the gear a hard wack ( used a socket and a real hammer) to lock it to the taper. Otherwise it could spin slightly on the 1st tighten.. After that 1st tighten, then pull the timing on the engine and flip over the pump timing pin.

…………Maybe “U-tube” — P7100 Pump install..

[Author]

Replies