Engine/Transmission (1994 - 1998) Timing pin leaks oil

[abranz]

I've got an oil leak which appears to be coming from the timing pin. Any ideas how to fix this? Does the vacuum pump have to be removed? Thanks.

 

[mwilson]

I've got an oil leak which appears to be coming from the timing pin. Any ideas how to fix this? Does the vacuum pump have to be removed? Thanks.

I assume that this is on your '96.



I have attached a picture of what is there. There is an o-ring on the pin itself plus one where the timing pin holder bolts to the rear of the front cover.





#12 3913994 O-Ring



#14 3915772 O-Ring

Mike.

 

[abranz]

Does the pin come out by itself or do you remove it's holder also? Thanks. Anthony

 

[mwilson]

Does the pin come out by itself or do you remove it's holder also? Thanks. Anthony

As I recall you remove the retaining ring (#11) and then the pin will come out of the holder.

It's been awhile, but people used to forget to pull the pin back after timing the pump and snap the tip off. Used to keep a new pin right in stock.







Mike.

 

[Bob4x4]

Yup use a pick type tool to pull the retainer then the only thing holding the pin is the o-ring that might be a little stubborn You don't want to pull the holder out unless it has to be repaired. It is adjustable to make the pin accurate

 

[abranz]

Thanks guys, appreciate it. Anthony

 

[GAmes]

Just seal it in with RTV. There are easier and more accurate ways to find TDC.

 

[JKosten]

Just seal it in with RTV. There are easier and more accurate ways to find TDC.

What do you prefer? I find the pin is easy to use when changing timing.

 

[Bob4x4]

I dont agree with the easier part but accuracy yes

 

[JKosten]

Well my understanding of the process is to install the gauge, set the lift you want, loosen the timing nut and then rotate the engine to TDC (pin in). Then hand torque, check timing and final torque to 130ft lbs.

I am missing something?

 

[Bob4x4]

The spill port method is what many Cummins shops use

 

[JKosten]

I never heard of that before. I googled it and found this thread: http://www.dieseltrucksite.com/showthread.php?t=670

That involves a degree wheel correct? I have the Snap-On timing kit already so it this an advantage to using that method?

 

[GAmes]

What do you prefer? I find the pin is easy to use when changing timing.

I prefer the drop valve method. Considering the pin is adjustable it could be off 2 or 3 degrees. Besides, even if it was accurate, the pin is not easy to get to.

 

[Bob4x4]

I prefer the drop valve method. Considering the pin is adjustable it could be off 2 or 3 degrees. Besides, even if it was accurate, the pin is not easy to get to.

For me the pin is easy to get to,and if absolute accuracy is desired the pin holder can be dialed in.

 

[GAmes]

For me the pin is easy to get to,and if absolute accuracy is desired the pin holder can be dialed in.

LOL. The way to accurately adjust the timing pin IS the drop valve method. Even when I was younger, I never found the pin to be easy to get to. Either way though, accurate TDC is the key.