Air Lockers

Submitted: Monday, Jul 13, 2009 at 13:59
ThreadID: 70633 Views:3087 Replies:5 FollowUps:6
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Howdy, The TJM air lockers have been around for quite some time now, any feedback? Good or otherwise, comparable to ARB lockers? Putting in front diff on my 100 series standard wagon. { most likely }

Regards

Krakka
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Reply By: Dave(NSW) - Monday, Jul 13, 2009 at 14:55

Monday, Jul 13, 2009 at 14:55
TJM had a problem with their lockers and I think you will find they took them of the market for a while. ARB lockers have been around a long time.
Cheers Dave...
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Reply By: tim_c - Monday, Jul 13, 2009 at 15:48

Monday, Jul 13, 2009 at 15:48
Have you considered an auto locker (such as Detroit Locker or similar)? They are often recommended for the front axle because they still enable you to steer the vehicle.

Personally, I'd be hesitant to install an air locker (ARB or TJM) because of concerns about the reliability/longevity of the rotating vacuum seals.
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Follow Up By: Krakka - Monday, Jul 13, 2009 at 16:09

Monday, Jul 13, 2009 at 16:09
mmm I am thinking along those lines as well Tim.
Thanks

Krakka
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Follow Up By: Member - Josh (VIC) - Monday, Jul 13, 2009 at 21:15

Monday, Jul 13, 2009 at 21:15
I have had ARB lockers front and rear with no problems at all. I like the fact I can turn them on or off as I want. In mud on a slope I can turn off for steering then turn on for traction.

Josh
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Follow Up By: Dave 2000 - Monday, Jul 13, 2009 at 21:58

Monday, Jul 13, 2009 at 21:58
The seals are not vacuum. The are under pressure from the air line, when it comes to life of the seals that are fitted correctly you are talkling about years and years.

Fitted them to my Discovery 200 just under three years ago, never looked back. FWIW if the 'O' rings did fail then pull the diff and fit new3 ones, once the diff is out (about half an hour on the rear of my car and quite a bit longer at the front) the 'O' rings take about five minutes to change.



regards

Dave
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Follow Up By: tim_c - Tuesday, Jul 14, 2009 at 11:24

Tuesday, Jul 14, 2009 at 11:24
Thanks Josh & Dave, I've always had the concern about the seals in the air-lockers but not sure if it was justified or not. I guess there are plenty of people out there with ARB lockers and if they were that bad, you'd expect to hear about it.

Perhaps I was wrong about the vacuum operation as I'd thought they operated on air pressure one direction (eg. locking) and vacuum (ie. negative air pressure) the other direction (eg. unlocking) - that's the way that demo model that appears at every 4WD show appeared to work.

Personally, I still think I'd prefer an auto locker on the front (for steering) - you never have to worry about switching it in or out and usually at the times you'll need the diff locks, there are enough other things to concentrate on without fumbling for a switch!
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Follow Up By: Dave 2000 - Tuesday, Jul 14, 2009 at 15:29

Tuesday, Jul 14, 2009 at 15:29
The locker unlocks when the air pressure is released, there is also a device which looks like a small round cage made of plastic which assists in the release. There were some reports of this failing in the past and leaving the axle locked. I need absolute reliability so had them both (one in each diff) replaced by steel versions.

Re the auto locker in the front, I think they are pretty good but every car I have driven with one in had small clonks and bangs which could be felt through the car/steering as it unlocked. They can also give rise to some strange steering when on the highway particularly when it is wet/slippery.
Sometimes you actually want the locker to be locked when in a steering situation off road as the traction may be poor and to have both front wheels help pull you around can be important moreso when time is you enemy in competitions, the auto unlockers will not help in this situation.

The issue about remembering to unlock in particular the front on high traction surfaces is important to note, if you intend to do serious off roading/competitions then you will not just fit the lockers anyway, you should be thinking about fitting strengthened axle shafts/flanges and attendant hardware or you could break something. If we are talking about the odd off road session then think about costs and weigh up hether you need a front locker at all.

There will be followers of many types of lockers and often threads like this can become quite heated, if this happens only take advice from the people who have really tried them and do not be swayed by I heard this and that stories, think about what you are seriously going to do with the car.

regards

Dave
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Reply By: Bonz (Vic) - Thoughtfully- Monday, Jul 13, 2009 at 17:55

Monday, Jul 13, 2009 at 17:55
I would backup the auto locker comment above, I have a lock-rite in the front of the Patrol, had it for ten years not an ounce of trouble
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Reply By: Member - John Baas (WA) - Monday, Jul 13, 2009 at 23:35

Monday, Jul 13, 2009 at 23:35
This thread prompted a few Qs for me as well, so I did a search.

Try ThreadID: 60656 and url http://www.pps.net.au/4wdencounter/articles/difflocks.html

Cheers.
AnswerID: 374427

Reply By: Member - John Baas (WA) - Monday, Jul 13, 2009 at 23:41

Monday, Jul 13, 2009 at 23:41
This thread prompted a few Qs for me as well, so I did a search.

Try ThreadID: 60656 and url http://www.pps.net.au/4wdencounter/articles/difflocks.html

Cheers.
AnswerID: 374428

Follow Up By: Krakka - Tuesday, Jul 14, 2009 at 06:01

Tuesday, Jul 14, 2009 at 06:01
Thanks John, very informative post.

Krakka
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