What I thought was a front crank seal.....

lmorris · February 10, 2012

If you have the pleasure of changing a front crank seal on one of these, remember to order the slinger, basic 6310. It is not in the picture/listing with the seal or the pulley and it does not come with the new seal. It is in the picture/listing of the crank shaft, because that is where one would look when looking up a front seal, Posted Image . Hopefully I can re-use the one I am about to remove because it's replacement is 4 days away.

Update: After fighting with the seal remover and finally getting the seal out I made a very interesting discovery. Sitting in the battery harness which is bolted to the front of the pan is a small 6MM bolt.....Where did it come from....

Well let me tell you, It fell out of the lower mounting hole for the vacuum pump. Since the whole lower half of the pump had no bolts, that was my leak.

Good thing that harness is there or I never would have found it.

joshbuys · February 11, 2012

Very nice find!!

ktmlew · February 16, 2012

Sometimes it's better to be lucky than good...

Autoworker · September 18, 2013

Thanks you saved me this morning ,I dia a front crank seal ,and now that its apart found it to be pump area will further dia this morning /up date yes the vacume pump is leaking the bolts were all loose causing the leak /front crank seal is good

Brad Clayton · September 18, 2013

:thumbup:

aparise72 · November 27, 2013

Me and our other diesel tech had a disagreement about the vacuum pump bolts. He said it had to be the turbo oil supply tube. So I pulled the upper intake and had him look at it. Sure enough dry as a bone. So I decided to pull the fan and fan drive assembly and had him looking on curiously as I reached in with my fingers and removed 3 out of 4 bolts with my fingers. So I quoted the guy a gasket and a couple hours to repair as the vacuum pump gasket is not covered under the powertrain warranty. Because the vacuum pump is part of the "brake system" yet the truck was a f450 with hydroboost.

Keith Browning · November 27, 2013

So I quoted the guy a gasket and a couple hours to repair as the vacuum pump gasket is not covered under the powertrain warranty. Because the vacuum pump is part of the "brake system" yet the truck was a f450 with hydroboost.

The real irony here is that the vacuum supply is required to operate the turbocharger wastegate and the EGR cooler bypass valve therefore technically it is part of the emission controls. Regardless of whether the vehicle has vacuum assisted power brakes or vacuum operated 4X4 locking hubs. All 6.7L diesels have these emission control but they all do not have vacuum brake boosters or automatic hubs. Go figure.

Chad_Kelsoe · November 27, 2013

Me and our other diesel tech had a disagreement about the vacuum pump bolts. He said it had to be the turbo oil supply tube. So I pulled the upper intake and had him look at it. Sure enough dry as a bone. So I decided to pull the fan and fan drive assembly and had him looking on curiously as I reached in with my fingers and removed 3 out of 4 bolts with my fingers. So I quoted the guy a gasket and a couple hours to repair as the vacuum pump gasket is not covered under the powertrain warranty. Because the vacuum pump is part of the "brake system" yet the truck was a f450 with hydroboost.

I repaired a leak yesterday on a F-250 and the gasket was covered under powertrain warranty, per OASIS.

Keith Browning · November 27, 2013

Hmmm... :chinrub2: I ran the part number for both the gasket and the vacuum pump on a 2011 F250/6.7L with 60,000 miles. "No coverage found."

Chad_Kelsoe · November 29, 2013

Here is a screen print of the OASIS report....

aparise72 · December 7, 2013

I will never understand what is covered and what is not. Every time I think a part should be covered it isn't and when I think it shouldn't be it is. Confusing.