lockrite lockers again

Submitted: Thursday, May 15, 2003 at 21:32
ThreadID: 4932 Views:3509 Replies:6 FollowUps:3
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ihave been told not to fit lock rite lockers without fitting free wheeling hubs as the constant knock of the locker engaging and disengaging would be annoying.i have a 1994 surf with in cab 4wd selection,has any body found this problem thank you
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Reply By: Member - Jimbo (WA) - Thursday, May 15, 2003 at 21:50

Thursday, May 15, 2003 at 21:50

Yes, I believe this to be correct. Try this link for info

http://forums.overlander.com.au/messageview.cfm?catid=5&threadid=5259Cheers, Jim

"Lead, Follow.....or get out of the way!!"
AnswerID: 20154

Reply By: Steve from Armidale - Friday, May 16, 2003 at 10:46

Friday, May 16, 2003 at 10:46
I have a Lock Rite in the front of my Troopy and can not detect any difference with the front hubs loked or unlocked in two wheel drive. I can't detect and "knocking" or other noise.

BTW, the most critical part of the install is getting the spacings spot on. I ended up getting my lock rite installed by a local diff specialist. It has been amazing, and in 18 months have only had it clunk once, and that was my fault!

The truck goes off road at least once a week, and has done some pretty tough off roading in the Gorge Country, as well as Madigan's Line accross the Simpson.
AnswerID: 20191

Follow Up By: Eric from Cape York Connections - Friday, May 16, 2003 at 16:01

Friday, May 16, 2003 at 16:01
Steve can you please tell me what type of locker you used i know you said a lock rite is that the one you see advertised in the 4x4 mags in Adeilade fot about $ 500. Also has it affected your steering or any other info would be appreciated.
All the best
Peter 07 4094 1745
Eric 02 42 94 34 96
Cape York Connections
FollowupID: 12941

Reply By: Member - Bonz (Vic) - Friday, May 16, 2003 at 18:04

Friday, May 16, 2003 at 18:04
My lockright locker in the front of my patrol can be heard to be engaging/disengaging with the front diffs locked and the steering is a tad heavier but it goes around corners ok and you just have to know its there and compensate a little in the steering movement.

I wouldnt say the engaging/disengaging is annoying at all

all the best________________________________>
Fraser Island Dreaming
AnswerID: 20238

Reply By: Janset - Friday, May 16, 2003 at 18:36

Friday, May 16, 2003 at 18:36
Hi guys.

I own a 92 Troopie and going on advice and what I read I installed a Detroit Soft Locker to the front diff. I have now removed the Diff. locker and replaced it with a Detroit True Track LSD. This is the story.

The Detroit auto diff lock works on this principle. When travelling in a straight line with the hubs locked in, both wheels drive at the same speed, (in theory) but this does not take into consideration the differences in rolling distances, so driving on a hard dry bitumen surface with hubs locked in is not a good idea and not recommended.

Upon approaching a bend, the front wheels are still turning at the same speed hence now the steering starts to get effected, tighter the turn the more the effect, (hello bush, here I come).

To over come this problem one has to ease off on the throttle, the diff then senses the difference in rotation speeds and as there is now no load on the diff (remember you slacked off), one of the wheels cam out and we again have a normal turning vehicle setup. When the vehicle straightens up again, the speed of the wheels rotate again at the same speed, the diff again locks up and does what it is designed for.

Simple! All these thing occur within a Detroit Soft Locker smoothly and silently. With this locking system I could just about drive up a vertical brick wall ;-)))

Now why did I replace it.

Simple. In mud as in sand there is not enough drag on one or the other wheel for the diff to sense the difference when I throttled off, hence no steering and into the bush!!!.

In beach sand, when you take your foot off the gas, the truck stops!

Another big downside, because the diff would not unlock when I made a "U" turn, which happens very often on the beach, one wheel would rotate and turn normally while the other one would bulldozer the sand in front of it to the point of stalling the vehicle.

Also, when I stopped in loose beach sand and then moved off again, instead of the wheels moving/driving independently in small drive motions and walking out from the stationary location, both the front wheels bit into the sand and started to turn and drive at the same time, but instead of driving froward it simply dug into the soft sand and buried me.

For those of you who do a bit of beach driving will agree that half of the time the track that leads off the beach has a fairly tight right or left turn half way up the hill. I would always get to that point with no problems at all, but instead of turning, the locked diffs would send me straight ahead. If I eased of the gas. I would stall half way around the turn.

And finally, while we are still at the beach. to follow on in the tracks of the vehicles in front of you was absolute murder as the tracks alway tend to weave a little but the diff locker wanted to go STRAIGHT ahead all the time which made for a very exciting ride, if you like that king of thing.

And there you have it. My experiences with an auto front diff locker.

In summary. For normal rock hopping and gravel road/track driving..Excellent! but that is where it all ends as far as I am concerned.

The True-Track LSD, best thing since sliced bread.

My advice? If you want that extra traction for the front axle then either go for a good LSD or and Air Locker that you can control to make it do what you want and when you want.

AnswerID: 20240

Follow Up By: Tony James - Saturday, May 17, 2003 at 07:06

Saturday, May 17, 2003 at 07:06
I have an 80 series STD with a Lock-Rite in the front. I must say that I have not experienced the sand/mud problems that you have. Although other people I know had had trouble with the lock-rite not unlocking on loose stuff, their problems stemmed from the installation. The gap when fitting, is absolutely crucial. Get this right and you won't have problems.
FollowupID: 12993

Follow Up By: Janset - Saturday, May 17, 2003 at 18:01

Saturday, May 17, 2003 at 18:01
Hi Tony.

You could be right, I do not know. I bought my Detroit from a Diff and Transmission specialist in Jollimont a Perth suburb who also installed it.

Having just said that and know what I now know of this "Specialist?????" I would not recommend him to my worst enemy. But then I think you will agree that ones experience does tend to colour ones advice.

What would really bleep me off (and it did) is that I took his advice and I was not happy. When the shortfall was explained to him he claimed that my expectation are too high and the diff was doing exactly what it should do. Any further work to the diff for any other reason, i.e. re setting or whatever, I would have to pay for.

Words to the effect, ".....I am the expert and I do hundreds of these so I should know", the only thing that would be covered by any form of warranty was breakage!

So the next question that one would ask when talking about adjustments is, "how do I know that the diff is set up properly?" and, "how many times would the expert pull down the diff to get it 'just right' according to you".

So I guess Tony, we are to a large degree in the hands of the "experts".

FollowupID: 13008

Reply By: Dozer - Saturday, May 17, 2003 at 00:16

Saturday, May 17, 2003 at 00:16
Your front diff has a dog clutch on one axle only. Putting a locrite in it will probably do as they say and clack in 2wd, because drive is still being transmitted from one front wheel through the diff and up the driveshaft with the locker installed instead of just turning the sungears inside the diff.
Once this drive overcomes the locker dog clutch spring it will index and clack! It wouldnt be hard to put FWH on and would probably give you better economy not having to run the front diff all the time, but having had a locrite in the front of a car before, i wouldnt recommend it just because you cant drive in 4wd on hard dirt without getting steering problems like torque steer and pulling one way or the other.(this is what most tracks through the bush are and they are usually windy up and down hills through trees etc.
ARB air lockers are the go!
AnswerID: 20273

Reply By: Ronnie - Saturday, May 17, 2003 at 20:16

Saturday, May 17, 2003 at 20:16
I have two Lockrites fitted to my old FJ 45, also powersteering,could not steer it before. Personally I would fit the free wheeling hubs as there well be less wear and tear on the front diff. It has to be very steep or boggy before I have to select 4WD.
RonnieLimmen Bight River July
AnswerID: 20323

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