Thread: ARB DIFF LOCK

Undo bolts for ring gear evenly......a rattle gun makes it easy....but you have to be careful.
the original centre and the locker side by side.
The original diff centre looks alot stronger.

The next step is to measure the shim pack which came from the ring gear side bearing.
to do that I need one of these.


At the end of the day it worked out to be 64 thou.

The next thing to be done is the old diff centre to be measured from the flange where the ring gear bolts on, to the shoulder which the bearing rested on.
These measurements are needed to worked out to get the correct shim pack for the new locker diff centre.
The ARB instruction book states it must be done accurately , but is not help full on how.
I ended up bolting the ring gear back on as the back of the ring is bigger than the flange it bolts on to and therefore gives me some thing to measure from .

Just using a straight edge I cannot get accurate readings.
The idea I have come up with is to find a piece of flat steel plate with a hole in it a little bit larger than the end of the diff centre where the bearing presses on and then measure between the two surfaces of the back of the ring gear and the steel plate resting on the shoulder of where the bearing normally sits.
If I get this correct and accurate on both the old diff centre and the locker centre , it will save alot of possible work reshimming later on to get correct ring gear backlash.
Out of time today
I will try again tomorrow.

Ron,

I thought this was going to be easy - I am glad you are doing the first one and not me.

How much are you going to charge to do all of the 101s in AULRO.

Garry

I am flat out just trying to sort out my problems, let alone everyone elses.
Doing this thread is giving me the drive to do a bit every day after work .
When your fixing everyone vehicles for a living , you go home and usually do not want to work on your own.

This is the plate I made today.

It fits on like this

Using the old bearing which I have now reduced to the inner cone holds it into place, so I can measure like this.

I took average measurements.
I then removed the ring gear and my measuring plate from the old diff centre.
I then tried to warm the ring gear in the oven at home only to find the missus was not too happy with the idea.
So I heated the ring gear in the Weber

Then the ring gear was fitted to the locker and the measuring plate and bearing cone to hold it in place.

Then I measured the same thing on the locker( distance from ring gear flange to bearing shoulder.)