Nissan GU Auto Locking Hubs

Submitted: Saturday, May 27, 2006 at 21:03
ThreadID: 34323 Views:1959 Replies:4 FollowUps:3
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Hi All,

I have a question that has been bugging me for a while now. Before owning my Nissan I had a Jackaroo with manual hubs. When driving I was able to lock the hubs in and then knock the vehicle into High Range whilst driving alon at speeds of up to 100KPH.

The Nissan hubs are auto locking, and the advice in the manual is that you should be travelling below 40KPH before engaging high range.

The auto hubs can also be manually and permanently locked in using a wheel brace. My question is ... if the hubs are manually locked in, can I engage high range on the fly at speeds above 40KPH? I suspect that the speed limitation is more to do with the hubs than the gears.

I have found that being able to engage high range on the fly whilst travelling on dirt roads where conditions suddenly change and become "slippery" at speeds above 40KPH is quite useful.

Your thoughts and experiences are most welcome.

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Reply By: Member - Paul P (Bris) - Saturday, May 27, 2006 at 21:23

Saturday, May 27, 2006 at 21:23
G'day

Hubs locked in YES up to 80-100kph. ( I think it is actually in the manual the speed difference between locked and unlocked). I do this regularly when on dirt roads. ( Lock the hubs in and select/deselect 4WD High at speeds up to 100kph )

I have know replaced the Nissan hubs with AVM (manual hubs) to facilitate use of low range in 2 wheel drive ( trailer backing).

Regards

Paul
AnswerID: 175102

Follow Up By: Member - Paul P (Bris) - Saturday, May 27, 2006 at 21:25

Saturday, May 27, 2006 at 21:25
Manual hubs and use of 2WD low range also great on steep driveways ( I have a manual transmission) saving clutch wear and tear.

Paul
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Reply By: Flash - Saturday, May 27, 2006 at 21:37

Saturday, May 27, 2006 at 21:37
Yeh, Ditto.
I use low range 2WD for backing etc courtesy of manual hubs. I prefer manual hubs any day as you KNOW what they are doing.
Cheers
AnswerID: 175103

Follow Up By: Member - Roachie (SA) - Saturday, May 27, 2006 at 22:11

Saturday, May 27, 2006 at 22:11
I've done the AVM hub conversion too, for the same reasons as Paul and Flash.

If you keep the automatic locking hubs, I don't believe it's possible to move into H4 from H2 without stopping completely. I tried it early on in the piece and even at around 10kph there was still VERY strong resistence to the lever moving into H4 and all sorts of grinding noises. Not unusual when you think that what you are trying to do is get the front shaft to start turning, all of a sudden, at the same speed the rear shaft is spinning at......It just ain't gunna happen!!!!!!!!!!!!

Cheers

Roachie
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Follow Up By: Member -Dodger - Monday, May 29, 2006 at 16:41

Monday, May 29, 2006 at 16:41
Ive done the AVM hubs also for the same reason.
I also lock them up when on unsealed roads and if it is slippery or corrugated engage the transfer case in high range at any speed below the ton which results in better grip and a smoother ride over the corrugates plus better braking on these surfaces.
I used to have a handle on life, but it broke.

Cheers Dodg.

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Reply By: Member - Hugh (WA) - Monday, May 29, 2006 at 14:43

Monday, May 29, 2006 at 14:43
Hi Steve & Paula,

Nissan's manual states that can change in/out hi range up to 80 kph with hubs locked.

Regards,
Hugh
AnswerID: 175376

Reply By: Member - Steve & Paula - Monday, May 29, 2006 at 19:27

Monday, May 29, 2006 at 19:27
Thanks everyone - very useful as usual!

Steve
AnswerID: 175472

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