Patrol gear box problem

G'day Jon,

Mine eventually let go at 280,000km. I drove my avoiding 5th gear as I knew of the problem early on but this still didn't help me, I should have just jammed it in 5th and tried to screw it up while the vehicle was still under warranty, as usual Nissan were no help with these k's. As I recall the spline did not go right through 5th gear and excess force was generated on the spline that was in contact with 5th gear. As you said, replace main shaft/5th gear and bearings but also look into fitting an older GQ 5th gear spacer as opposed to GU 5th gear spacer. The older spacer fits fine but has a pair of moon shaped cut-outs allowing oil to penetrate the main shaft where the GU spacer does not, I am sure this is not essential but to my reckoning it seems beneficial so I did it this way during the rebuild.

Tom, for 5G I had a crawler gear installed in my transfer case at the same time as the rebuild so whoever is quoting 5G for box rebuild alone has their hand on it. (hang on I see you are in WA, maybe in a mining town this would be the price??? my uncle had his rebuilt in Norseman for 3G also a few years back so hope this helps in pricing)

Regards, Trevor.

Nope,Never was any recall .They just waited and hoped all the bad boxes reached a date where they could say "tuff, it's too old."
Mine reached 2006 (2000) model before it went.

Ray


Thanks for that info. I had been informed my a Nissan Mechanic that there had been a recall. Vehicle manufactures have done that sort of thing in the past.

The worst example I know of is the Ford Pinto. It had a fault that Ford knew would result in the loss of life but they decided not to do a recall.



Tjilpi

Your main spline is a fine thread where it should be a course thread , I know a mechanic in Adelaide that repaired many of these in the past.
You could ring him for advise
G&C Automotive
Graves Road Newton
Ph: 83377905 ask for John