ARB Rear locker update

[NJV6]

This is for the large 9.5 diff from the 3.5 and 2.8.

It is able to be ordered and the code is RD154.

They are however only on backorder and are not going to make them until they have enough for a run.

I have mine ordered and have to wait so all you lot, hurry up and order

Glen

[Ian Sharpe]

This is for the large 9.5 diff from the 3.5 and 2.8.

It is able to be ordered and the code is RD154.

They are however only on backorder and are not going to make them until they have enough for a run.

I have mine ordered and have to wait so all you lot, hurry up and order

Glen

So I guess you never fixed your factory locker?

[NJV6]

I did, I got a replacement for a very good price actually. $NZ400 and its been in and in regular use for the last 8 months.

But as you know I have broken one before adn admittedly I was very hard on it when it happened, so I alwasy had plans to replace it with an ARB when they got there one sorted.

I also like how they go straight in, I have toyed with the idea of using the arb compressor with a pressure reducer for the factory locker.

I think you were going to get an ARB as well were you not?

[Ian Sharpe]

Ok,

My locker has at least a couple of teeth missing, but it still works OK. Sometimes though the pump cycles on more tha it should, so I dont know if there is a problem with the diaphram in the diff or it is becuase of the teeth. I have tested the lines, so I dont think its a problem with the lines or the pump.

I have the ARB front locker, so I guess I will keep the factory one until it definately gives up the ghost .

cheers

[OGJON]

the email I got from ARB said that the rear locker for the 3.5 is part # RD156
which fits the rear diff used in both the Pajero & Terracan

[NJV6]

Similar.

154 is Paj beam axle
155 is Paj IRS
156 is Terracan't.

They have different size axles.

So who's ordered????

[NJV6]

Ok,

My locker has at least a couple of teeth missing, but it still works OK. Sometimes though the pump cycles on more tha it should, so I dont know if there is a problem with the diaphram in the diff or it is becuase of the teeth. I have tested the lines, so I dont think its a problem with the lines or the pump.

I have the ARB front locker, so I guess I will keep the factory one until it definately gives up the ghost .

cheers

I have figured I am going to sell my current locker complete and put the ARB into my original diff housing, using the R & P from the one I damaged. I need to do the rear wheel bearings and new drum shoes on the current housing so I am selling the lot complete.

I don't want to do rear wheel bearings only to be changing axles when the ARB comes out. Hope that makes sense. I am also a bit wary of the rear locker when I am running tyre chains having damaged one before.

Glen.
P.S. The ARB front is great!

P.S.S. Order one now so I can get mine!

[OGJON]

Similar.

154 is Paj beam axle
155 is Paj IRS
156 is Terracan't.

They have different size axles.

So who's ordered????

sorry but the paj solid rear & the Terracan solid rear use the exact same diff & axles same with the torsion bars & front diff as the Terracan uses all the exact same running, engines & suspension gear as the '97 NL GLS the only difference is that the badges are different along with the grill design

[Bitsamissin]

No they are not the same - 9.5" rear diff is identical but side gears & axles are different hence the three different part no's :-
- 154 Pajero live axle 3.5V6/2.8TDI = 31 spline, 33.5mm diameter axles
- 156 Terracan't = 34 spline, 35mm diameter axles
- 155 Pajero IRS = 33 spline, 36mm diamter axles

[-Scott-]

No they are not the same - 9.5" rear diff is identical but side gears & axles are different hence the three different part no's :-
- 154 Pajero live axle 3.5V6/2.8TDI = 31 spline, 33.5mm diameter axles
- 156 Terracan't = 34 spline, 35mm diameter axles
- 155 Pajero IRS = 33 spline, 36mm diamter axles

Really? Honestly, why should we believe you?

[Ian Sharpe]

No they are not the same - 9.5" rear diff is identical but side gears & axles are different hence the three different part no's :-
- 154 Pajero live axle 3.5V6/2.8TDI = 31 spline, 33.5mm diameter axles
- 156 Terracan't = 34 spline, 35mm diameter axles
- 155 Pajero IRS = 33 spline, 36mm diamter axles

Really? Honestly, why should we believe you?

You're joking right??

[OGJON]

Here's a copy of the E-mail that was sent to me

From ARB

Dear Jonathan,

As a part of our on-going commitment to seek out and supply all of the possible applications for the renowned ARB Air Locker product, we have committed to developing the following Mitsubishi rear axle versions.
Production of the first of these, the RD156, will commence late this year and be followed in the first quarter of 2009 by the other 2 applications

RD155 Suits Mitsubishi 9.5" 33 spline Independent (IRS) axles found in the rear of Pajero (montero) NM onwards.

RD156Suits Mitsubishi 9.5" 31 spline Live axles found in the rear of NL Pajero, Hyundai Terracan V6 3500cc and all current model Triton (L200).

These part numbers are now in our Distrib computer systems and can be back ordered through your local ARB branch as of 03/01/09 Pricing is not yet finalised.

So that's an RD156 for yours.

Regards
Dave

[Bitsamissin]

Hehehe very funny guys.
Yes I deal directly with the mech engineer (Daniel) at ARB head office who is directly in charge of locker development here in Melbourne.
He is da man.....................
I have supplied him with a lot of Mitsu tech data plus axles, diffs etc.
I have a folder with countless email correspondence going back quite a few years. Also I have helped Mark Hardman with Mitsu stuff before (he makes a lot of the locker side gears for ARB).
These guys are at the coal face and I only believe what THEY tell me not some Mitsu illiterate ARB counter sales guppy who either doesn't know or only has the ARB booklet/press releases to refer to. They have no idea what is in development or what goes on behind the scenes.
Here's an example of some ITK stuff from August 2005:-

Hi Frank,

Always good to hear from you.
We are actually looking into the Paj rear 9.5" quite seriously lately.
That being said, I still can't say it is on "the list" yet, but it's looking more attractive all the time.

Just for your info, here is what we've learned as of late:

1 - The Paj NL type 3.5 litre diff is virtually identical to the NM IRS type diff (NOTE: I only have somebody else's NM measurements to go by - I don't have one to check for myself) except for the fact that the NL has 31 spline shafts and the NM has 33 spline shafts. Could be a noteworthy axle shaft strength upgrade for the NL guys like yourself if you can get somebody to make up some 33 spline shafts.

2 - The Hyundai Terracan ALSO shares the exact same diff as the NL (we did measure the 2 of them up) with the exception that it has 34 spline shafts. (maybe a direct swap-over axle shaft upgrade for the NL?)

3 - The Terracan also shares the same front IFS diff as the NL/NM except it has larger diameter ring gear bolts. We will be issuing a tech brief on drilling out an RD110 to suit. That probably doesn't help you out much, but who knows? There might be a preferable ratio in a Terracan or something that the Mitsu guys would be interested in playing with.

4 - The NL/NM diffs share the same ring gear inside diameter and ring gear bolt pitch circle diameter and number of bolts as the RD46 (3.0 Litre large Mitsu rear) . The only problem is that the inside diameter of the bearings on the NL/NM is 55mm as opposed to the 45mm RD46 bearing journal, and the ring gear bolts are 12mm compared to the RD46 10mm bolts. This therefore opens up possibilities of guys like yourself jumping the gun on ARB committing to build the 3.5 Litre rear and either sleeving the bearing journals or finding a substitute bearing that will adapt an RD46 to an NL. Then you could just get Mark Hardman to wire cut you a custom pair of side gears according to a spline profile that I can generate for him. (Mark and I do this for Tough Truck guys fairly regularly)

That's all I have for now.
If you or anybody you know ever bends or shatters a 31 spline shaft, could you save me the diff spline?
I don't have a 31 spline shaft sample yet, and your diff side gears showed it to be a fairly non-standard profile.

Cheerz,

daniel

[pickle]

So it's only taken four years to get to this stage
Obviously ARB have take Mitsubishi owners seriously.
Personally after seeing enough later model Pajero's doing some serious tracks I wonder if a rear locker is warranted. Obviously if it works in conjunction with Mitsubishi's fantastic traction control it will make some of the Pajero's unstopable.
Also well done to Bitsamissin for his involvement in the locker developement. I am sure without his input the Pajero rear locker would still be on the drawing board.
Dave

[OGJON]

Hehehe very funny guys.
Yes I deal directly with the mech engineer (Daniel) at ARB head office who is directly in charge of locker development here in Melbourne.
He is da man.....................
I have supplied him with a lot of Mitsu tech data plus axles, diffs etc.
I have a folder with countless email correspondence going back quite a few years. Also I have helped Mark Hardman with Mitsu stuff before (he makes a lot of the locker side gears for ARB).
These guys are at the coal face and I only believe what THEY tell me not some Mitsu illiterate ARB counter sales guppy who either doesn't know or only has the ARB booklet/press releases to refer to. They have no idea what is in development or what goes on behind the scenes.
Here's an example of some ITK stuff from August 2005:-

Hi Frank,

Always good to hear from you.
We are actually looking into the Paj rear 9.5" quite seriously lately.
That being said, I still can't say it is on "the list" yet, but it's looking more attractive all the time.

Just for your info, here is what we've learned as of late:

1 - The Paj NL type 3.5 litre diff is virtually identical to the NM IRS type diff (NOTE: I only have somebody else's NM measurements to go by - I don't have one to check for myself) except for the fact that the NL has 31 spline shafts and the NM has 33 spline shafts. Could be a noteworthy axle shaft strength upgrade for the NL guys like yourself if you can get somebody to make up some 33 spline shafts.

2 - The Hyundai Terracan ALSO shares the exact same diff as the NL (we did measure the 2 of them up) with the exception that it has 34 spline shafts. (maybe a direct swap-over axle shaft upgrade for the NL?)

3 - The Terracan also shares the same front IFS diff as the NL/NM except it has larger diameter ring gear bolts. We will be issuing a tech brief on drilling out an RD110 to suit. That probably doesn't help you out much, but who knows? There might be a preferable ratio in a Terracan or something that the Mitsu guys would be interested in playing with.

4 - The NL/NM diffs share the same ring gear inside diameter and ring gear bolt pitch circle diameter and number of bolts as the RD46 (3.0 Litre large Mitsu rear) . The only problem is that the inside diameter of the bearings on the NL/NM is 55mm as opposed to the 45mm RD46 bearing journal, and the ring gear bolts are 12mm compared to the RD46 10mm bolts. This therefore opens up possibilities of guys like yourself jumping the gun on ARB committing to build the 3.5 Litre rear and either sleeving the bearing journals or finding a substitute bearing that will adapt an RD46 to an NL. Then you could just get Mark Hardman to wire cut you a custom pair of side gears according to a spline profile that I can generate for him. (Mark and I do this for Tough Truck guys fairly regularly)

That's all I have for now.
If you or anybody you know ever bends or shatters a 31 spline shaft, could you save me the diff spline?
I don't have a 31 spline shaft sample yet, and your diff side gears showed it to be a fairly non-standard profile.

Cheerz,

daniel

Ok no probs I was only going by the E-mail that was sent to me
not to worry any ways I have had my rear locker on back order since December last yr every time I ring to find out what's happening I keep getting the same answer "still under development"

[Bitsamissin]

Hi Dave, yeah it took us 3 years to get RD110 from lobying to finished item (2002-2005).
Mark & Daniel have been fantastic for us Mitsi guys with low range gear/ARB locker development.
Of course our Paj Club plus the US guys all did their part in sending emails to Daniel to show their interest and commitment to buy these products.
You would be surprised how much they listen and how much tech data/samples they get from enthusiasts for all makes & models to speed up the design/development process.

[NJV6]

Obviously if it works in conjunction with Mitsubishi's fantastic traction control it will make some of the Pajero's unstopable.

Dave

Sorry beg to differ there.... 5 minutes and dash lights flash and shuts down due to overworking meaning the brakes get to hot!!

[Ian Sharpe]

Obviously if it works in conjunction with Mitsubishi's fantastic traction control it will make some of the Pajero's unstopable.

Dave

Sorry beg to differ there.... 5 minutes and dash lights flash and shuts down due to overworking meaning the brakes get to hot!!

yeah, TC is OK, but theres nothing like the real thing, eh!

[pickle]

Obviously if it works in conjunction with Mitsubishi's fantastic traction control it will make some of the Pajero's unstopable.

Dave

Sorry beg to differ there.... 5 minutes and dash lights flash and shuts down due to overworking meaning the brakes get to hot!!

Well I was thinking more along the line of if you have the locker in the traction control will not have to come on as early or frequently.

I know that the traction control gives up the ghost reasonably early, but when it's working they do the job well.
Dave

[Bitsamissin]

Yeah I gotta say the t/c does work well on my NP.
Climbing some of the mountainous terrain in the High Country was a lot easier than in my NJ with just the lsd.
Agree that there is a limit to cycling times but yet to have it happen to me though.
Good tyres help a hell of a lot though.