Your timing belt may last over a 100K but your water pump might not

I changed my timing belt on my 07 with 4.7L over the week end. While I was pulling off the covers, I noticed this pink crusty stuff on the drivers side of the pump by the belt idler. Apparently the water pump had leaked. The leak must have sealed itself after a while or the PO put some stop leak in the coolant. Either way it's a very good idea to change the pump as the job to replace it will involve the timing belt.
The pump itself looked visually fine but there was a leak at the air hole.

 

That’s why they always advise to change the water pump at the same time as the timing belt.

 

Yeah, a leaky water pump may get you to change the timing belt in time before it breaks.

 

Yeah, I would imagine it be a good idea to change the belt if your water pump went out close to the time that the belt should be replaced. Although a water pump is much easier to do alone then the timing belt.

 

It looks like you have to pull everything apart as you would the belt on the 4.7