Diff Locks ????

Submitted: Thursday, Sep 16, 2004 at 07:55
ThreadID: 16307 Views:2930 Replies:10 FollowUps:13
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Hi All
Can someone advise on the pros and cons of the different types of diff locks, i spoke to the good folk at ARB and they tell me to stay away from the mechanical lockers, you should use the ARB air diff lock, the sellers of the mechanical lockers tell me that theirs are a better product as you dont need to trun them on and off.
Im new to the 4WD scene and would like to build my truck up to take me anywhere
Thanks
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Reply By: cokeaddict - Thursday, Sep 16, 2004 at 07:58

Thursday, Sep 16, 2004 at 07:58
Hi Mark,
Short and sweet mate...go the AIR LOCKER (ARB). Nothing else comes close. Even though it is over priced, but thats what happens when they are on a winner, they can charge whatever they want.
I have one in my front diff, has saved me a few times i can tell you. I will be adding a rear one as soon as i collect some cash too.
Regards Angelo
AnswerID: 76579

Follow Up By: Eric from Cape York Connections - Thursday, Sep 16, 2004 at 18:12

Thursday, Sep 16, 2004 at 18:12
They are good but when the compreser fails and or the air lines fall or the dif oil blows back into the air pump they arnt that good.

All the best
Eric
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FollowupID: 336448

Reply By: Member - Karl - Thursday, Sep 16, 2004 at 08:39

Thursday, Sep 16, 2004 at 08:39
Mark,

With the mechanical lockers they are on at all times and only disengae when required, ie turning a corner, going around a round-about etc, so that when you are off road yuo don't have to manually lock them in. Normally you don't feel them engaging/disengaging but sometimes you do and it can be a minor clunk to major shudder/clunk. The first time this happens it is a bit of a shock.

Also with a mechanical lockers it is not advisable to fit them to the front diff of a constant 4WD such as Landcruisers etc as it make for heavy front end steering. It's not so bad on vehicles such Patrols where you have to manually lock you hubs because this should only be done once you are off road any way.

With air lockers you have the choice of when and which diff locker to engage etc but they do cost a lot more than manual lockers and I suppose you get what you pay for. I have a Lockrite in the rear diff of my 80 Series Landcruiser and I am more than happy with it - I can't afford the air lockers.

The choice is yours but remeber ARB sell ARB products and will push theirs over others as well as the other retailers. Shop around for advice from members of 4WD clubs, other 4WD drivers and forums like this and hopefully you will get the good advice needed.
AnswerID: 76584

Follow Up By: Eric from Cape York Connections - Thursday, Sep 16, 2004 at 18:19

Thursday, Sep 16, 2004 at 18:19
Karl we have had and I have met folks out there that have had nothing but trouble with there ARB air lockers.
There compressers have failed and there air hoses have brocken or fallen off.
In this case you aint got a locker just a very expensive thingy.

Go the detriot locker s/f about $1300 and you done have to think will or wont I.

All the best
Eric
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FollowupID: 336450

Reply By: Member - Chris M (QLD) - Thursday, Sep 16, 2004 at 08:44

Thursday, Sep 16, 2004 at 08:44
Well advised above!

On a side point, of course ARB are going to say steer away from mechanical and vice versa.

However, I asked this question the other day and I estimate around 85% of people were very satisfied with ARB Lockers. It's nice to switch them off to recover your steering. They will do you warranty in on which ever diff you stick them in if you have that to worry about. Plus, you'll have the extra expense of air compressor.

A member on this site got me a fantastic price delivered to my door and if you give me your email address, i'll pass the details on, he should be able to help you out, should you decide on the arb air locker.

cheers,

chris.
AnswerID: 76586

Reply By: Truckster (Vic) - Thursday, Sep 16, 2004 at 08:47

Thursday, Sep 16, 2004 at 08:47
Why not learn where your truck can take you first, it may suprise you.

Lockers may get you out of some situations, but they will also get you into MORE trouble by getting you further into the bog/mud/crap/hill etc.

YMMV

PS. ARB is the best, you turn on/off as Coke said.
AnswerID: 76588

Follow Up By: Eric from Cape York Connections - Thursday, Sep 16, 2004 at 18:21

Thursday, Sep 16, 2004 at 18:21
Truckster Im getting a bit worried I am starting to agree with your repyls whats going on.

All the best
Eric
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FollowupID: 336452

Follow Up By: Member - Brett H (QLD) - Thursday, Sep 16, 2004 at 18:51

Thursday, Sep 16, 2004 at 18:51
For my 2 cents.

An important factor in just how far you vehicle can get you ( without risking the vehicle of course) is to have the load matching the suspension. Not enough weight in a vehicle with H/D suspension is worse that a tad too much weight in a standard set up. Keep as many tyres on the ground as possoble is the secret.
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Follow Up By: Truckster (Vic) - Friday, Sep 17, 2004 at 09:59

Friday, Sep 17, 2004 at 09:59
Eric, take ya medication... its dangerous out here.. ;)~
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Follow Up By: Eric from Cape York Connections - Saturday, Sep 18, 2004 at 07:24

Saturday, Sep 18, 2004 at 07:24
Truckster no matter how mutch medication I take It still scares me.

All the best
eric
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Reply By: Member - NewMan (VIC) - Thursday, Sep 16, 2004 at 10:03

Thursday, Sep 16, 2004 at 10:03
I would have to aggree with Truckster, you will be supprised where your truck will take you without lockers.

I have a FJ55 that I started with, it has completely open diffs and it took me to places that I thought I would never have been able to go.

The most important thing I have learnt is that it is not the lockers that are important it's the traction. Originally had old worn out A/T's and had problems gettings out of some holes but when I got a set of Muddies could go in and out of the same places that I got stuck in before.

This is not to say don't buy lockers (Ihave front and rear ARB lockers in my new 80 series) it is to say go out and see what your truck can do with a good set of tyres and then see if you need lockers for what you want to do.

Tony N.
AnswerID: 76598

Follow Up By: Member - NewMan (VIC) - Thursday, Sep 16, 2004 at 14:00

Thursday, Sep 16, 2004 at 14:00
"(Ihave front and rear ARB lockers in my new 80 series)"

Should say "I have front and rear ARB lockers in my 80 series".
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Reply By: fozzy - Thursday, Sep 16, 2004 at 12:53

Thursday, Sep 16, 2004 at 12:53
mark L
if arb working they are great-actually gives u true 4wd
think u may find arb are having a few manufacturing problems at moment and im not saying this to sway u away from them either.
when there is a problem with them they have been ok to deal with
had them in 80 series for 5 yrs and only problem was compressor failing twice(once in desert and once before challenging hill) and oil coming out from solenoid
had them installed in 100 series and rear one failed day after installation(internal seal) and next trip after rear fixed the front one inoperable(tba outcome)
they tell me the compressor these days is much better thn 5yrs ago-only time will tell
there is another mob in moorabbin who do air lockers as well-cant think of name at moment but if u do search on internet u will find
about 1k more than arb
could possibly go detroit locker in rear and arb front locker so that way if one fails u still have 3 wheels turning.
tough choice to make
as said before if no problems arb are great
AnswerID: 76620

Reply By: Martyn (WA) - Thursday, Sep 16, 2004 at 14:56

Thursday, Sep 16, 2004 at 14:56
Marl L,
I've never used anything other than air lockers, me personally I love them, they're great, I've been using them for five or so years, I had a bit of a problem with oil coming back from the locker into the solenoid, the internal O-ring was replaced at no charge,no problem after that, they still worked ok.
You tend to get yourself into more problems and tend to get to places others with standard gear can't get to so recovery on that rare occasion that you do get stuck starts to be an issue. I've found them very reliable and would always go that way. Learning to drive with them is also a steep learning curve in some situations if you aren't aware of how your vehicle will react with the lockers in it can be quite scary, straight lines become very hard to break away from.
Keep the shiny side up

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AnswerID: 76638

Follow Up By: V8troopie - Thursday, Sep 16, 2004 at 16:24

Thursday, Sep 16, 2004 at 16:24
Martyn, I just (two days ago) had an ARB airlocker fitted into the rear diff of my HJ75 troopy. I had not yet a chance to try it out.
Regarding your oil leaking problem, did you say the diff oil travelled all the way up the air line to the solenoid at the compessor? And, if so, where on the solenoid should I keep checking for it? did it do any other damage or just rendered the locker inoperatial?

I'm kind of worried as the installer (not ARB) informed me that they had to return the first locker they installed because it induced runout in the diff (whatever that means exactly), hopefully the replacement locker installed now is perfect.
For the price of these things one would think it included a very good inspection before the unit goes out for sale.
Klaus
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Follow Up By: sean - Thursday, Sep 16, 2004 at 18:08

Thursday, Sep 16, 2004 at 18:08
I have the same problem with oil getting past the o ring. Oil SPURTS out of the release valve and in my case there is a fair amout of oil under the passengers seat.

Local ARB are not proposing to fix by replacing the o ring despite there being alot of vehicles at this moment with the exact same problem (see posts elsewhere).

I emailed ARB head office a week ago, and they still have not replied at all. I would check out the detroit if you have part time 4wd because it does not have the disadvantage of placing extra stain on the drivetrain in turns.

Sean
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FollowupID: 336447

Follow Up By: Martyn (WA) - Thursday, Sep 16, 2004 at 20:43

Thursday, Sep 16, 2004 at 20:43
V8 Troopie,
The oil did come "all the way back up the tube" and leaked out very slightly from the solenoid under the seat where I have the compressor mounted. It was a very slight leak but the carpet got some hypoid oil on it and it did smell, one disadvantage of having the compressor in the vehicle. The one I've had fitted in my Rangie two years ago has been perfect. The locker was never rendered inoperable, always wrked and I also knew everything was getting lubricated. One thing you have to remember is that for every revolution the o-ring is turning on a surface, hence the front locker will always last longer because the o-rings only wear when the axle is locked in. Mine was in for at least three years after the o-ring was replaced never leaked again. By the time ARB had got round to booking the vehicle in to get the o-ring fixed the leak had nearly stopped so I assumed there was a certain ammount of bedding in. In the small print you are supposed to change the oil after the locker has been fitted after 2500 klms, I didn't...............
Keep the shiny side up

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FollowupID: 336472

Reply By: Member - Nick (TAS) - Thursday, Sep 16, 2004 at 18:49

Thursday, Sep 16, 2004 at 18:49
Speaking to an ARB rep the other day about this oil problem and Air Lockers and was informed that apparently a mod has been made to all new Lockers now that cures this problem.
AnswerID: 76676

Follow Up By: Member - NewMan (VIC) - Friday, Sep 17, 2004 at 08:05

Friday, Sep 17, 2004 at 08:05
Nick

Had the same problem with my ARB lockers just after having them fitted.

Took my truck back to ARB and they fitted Diff Breather ext's and all fixed. Seems my diffs were preasurising (sp?) and forcing the oil up the air line and out the solenoid.

Although I did have a problem with seal/o-ring within the locker and it was fixed straight away.

Tony N
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Follow Up By: Member - NewMan (VIC) - Friday, Sep 17, 2004 at 08:06

Friday, Sep 17, 2004 at 08:06
Fitted 2 months ago. Told new design installed.
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Reply By: Mark L - Thursday, Sep 16, 2004 at 21:05

Thursday, Sep 16, 2004 at 21:05
Thanks for all the feedback, great to hear comments about both types of diff locks, i have a '92 4Runner and it has taken me to some amazing places already, but on our last outing, we were reasonably heavy with gear, going up a steep, slippery sandstone hill we kept losing traction, had to back down the hill and give it some momentum, dont want to do that to often, any, i will talk to a few more people, and if ARB have fixed the o-ring issue, i think ill head down the ARB path, Thanks again
AnswerID: 76695

Follow Up By: banjodog - Friday, Sep 17, 2004 at 13:47

Friday, Sep 17, 2004 at 13:47
To set-and-forget fit a LSD in the front and a Detroit in the rear. Takes out the guess work.
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FollowupID: 336547

Reply By: Member Eric - Thursday, Sep 16, 2004 at 21:55

Thursday, Sep 16, 2004 at 21:55
I run a mechanical locker in the rear & a air locker in the front .
AnswerID: 76709

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