Transfer and engine oil

[Rangie Thing]

Hi i have a 4 speed manual early RR and have been told that if you don't use the transfer lock when off roading you run the risk of damage to the spider gears, but on the plate in the rangie it says not to use full throtle in low first and second so how strong is the transfer lock and how easy is it to damage the spider gears. Thanks

p.s. I am running a p76 (4.4) and have been recommended to use HPR30 engine oil, does anybody have any other oils to recommend (what is used in the 3.5 rangie)

[Slunnie]

I thought the LT95's were are really strong gearbox. It'll probably more a comment to protect the diffs and axles.

[460cixy]

i have the same box in mine the gearbox and transfer can take it but diff centers and axels have been known to snap like twigs. i have busted so many 10 spline side gears its not funny.

[Bush65]

As the others have suggested the reason for the warning about not using full throttle in low 1st and 2nd is to avoid failure of the front and rear diffs, axles etc.

The centre diff lock is strong.

The LT95 t/case has 2 main weak points.

Under high load the needle roller thrust bearings can fail.

And the centre diff.

The cross shafts for the spider gears can break. One piece cross shafts from MacNamarra or Maxi-drive will fix this.

As you were told, it is best to lock the centre diff offroad as front wheel spin leads to excessive wear of the thrust washers for the spider gears and subsequent failure of the centre diff.

[Rangie Thing]

the diffs will be the next to be upgraded.

It is ment to be a lack of oil to the spider gears in the transfer when the front diff turns quicker than the rear from what i have heard.

[Rangie Thing]

Thanks Bush65 is there a fix kit for the needle roller thrust bearings or is this something you have to live with.
and can both of these things be replaced without taking the box out?

[walker]

Whenever I get onto a dirt road a engage the centre diff lock and leave it on. I definately use a lot "full throttle" and have not had a problem with it, even running 35" tyres. Although I do have maxidrive axels and locker front and rear. Before that I went through 10 spline diff centres very quickly.