Hi guys. I have Just rebuilt a cat D 2002 Nissan Navara D22 2.5 DI YD25DDTI. I finished putting the front together today.
I towed the truck, to get it to my yard for repair, for a couple of miles, and smoke started coming from under the bonnet. I stopped towing, and had a look, oil was being pushed out of the front diff and stunk. I trailerd it the rest of the way. The front near side brake was seized which is what I put the front diff problem down to. I drained all the diff oil, and renewed it.
I test drove the car to see how it was. First problem was a loud creaking from the front when wheels turned full lock, and suspension being worked. Second problem, no power in 3rd gear, but fly's in first and second. 3rd problem, a noise from the front of the engine, which comes and goes, I thought that the plastic surround on the back of the rad had fallen on the viscous fan, as this is what it sounded like, but it was coming from the engine, and finally the last problem, when in 4wd the truck feels like its being held back, buy a seized brake or something.
Tomorrow I'm going for a good look at it, and see how much I can get through diagnostic wise. I'll come back to you tomorrow.