g.q patrol gear box

Change the g/box and t/case oil to synthetic. The cold hard shifting symptoms will be cured.

Penrites Manual Gear Oil Light will fix your gearbox and speed up all your shifts. (It is a heavy duty gearbox oil reccomended for the patrol but a 'Light' version to keep the stickiness at bay). If selectors/syncro worn too much you may have to double clutch 1st to second in really cold weather to prevent further wear in any case.)
While your at it do your rear diff a favour and change the oil to penrites Limslip 140 (NOT 140/85) The patrols LSD the only one this heavier oil suited to (use the lighter oils for toyotas and Pajeros) Your LSD will operate much better and smoother too. Checkout penrites tech support if any queries or their website.
kezza

I have similar symptom on my GQ 93 diesel (350000k). Even I have changed to Penrite Man Light (80w/85), the shift from 1st to 2nd or vice versa is still difficult in morning (ambient temp ~17 to 22oC).
It is better for 1st to 2nd after 15mins drive. But from 2nd to 1st need the car almost in walking pace or slower than that.
Would it be normal to allow shifting to 1st at such low low speed?
Anyone can help ?

Has it just started??? or gradually got worse?
Have you changed oil recently?

Does double clutching do anything different?? Try and see!

So when the oil gets hot and thins out its better, so changin oil for thicker oil probably wont do much? 190k klms isnt much really, I know of a few at 500k klms still going, btu depeds on history of the car dont it!

Take it in for a G'box service, they will tell you whats up..

bb the problem is known as "cold gear baulking".
Nissans are well known for it and I have experienced it
in both the GQ and GU.
To remedy the problem use an oil with a viscousity index of 5 less than the manufacturers recommendation.
Valvoline produce a product called Duragear (75/85) which is synthetically fortified. Not cheap but the difference is absolutely amazing!!
Interesting comment on the vibration. My GQ developed the same but I sold it without ever determining what it was.

I've read that the vibration that comes from a slow-idle or taking off can be from the clutch.

The fly-wheel on the GQ's have a tendancy to go out of whack a little causing the vibration that you feel.

My mate's GQ 2.8 suffers from it and in a few years, so will by GU 3.0.

That's if it gets that old, the way the Turbo is going I'm suprised I haven't burnt the ***ker to the ground yet!

bb,
I had similar problems. It ended up being a dry mainshaft spline, where it goes through the clutch driven plate. It is a cheap fix, once you pull the gearbox out! A bit of grease on the spline, and no more problems.
We only fluked the remedy, as we had pulled the gearbox out ready to check/replace all sort of bits and pieces. Haven't had that problem now for about 5 years, and 80000kms.
Hope this is some help to you
Joe