Outer Limits 4x4 Board

My LT95 transfers oil from the transfer case to the 'box .
every two weeks I drain the 'box and top up the t-case.
I've heard of an equalisation tube as a fix, just not sure how or where.
Has anyone got a tube? if so how is yours done?

I was thinking of drilling a hole in each filler plug, taping a thread, screw in a fitting with a bit of hose linking the two.

Any info apreciated.
Thanks
Dave

billybus wrote:My LT95 transfers oil from the transfer case to the 'box .
every two weeks I drain the 'box and top up the t-case.
I've heard of an equalisation tube as a fix, just not sure how or where.
Has anyone got a tube? if so how is yours done?

I was thinking of drilling a hole in each filler plug, taping a thread, screw in a fitting with a bit of hose linking the two.

Any info apreciated.
Thanks
Dave

That is how I have seen it done before.

I think it was Ritters in Melbourne that used to do a fix on this but i am not sure what they did. The fix definately was all internal and did not have any external pipe.

I was thinking of drilling a hole in each filler plug, taping a thread, screw in a fitting with a bit of hose linking the two.

This is a comon fix on toyo's, but on an lt95 the LEVEL plugs arent exactly close to each other and will need to be braided hose incase it gets caught by a rock or stick/ log etc. The oil level plugs are located above the drain plug on the g/box and below to the right of the pto cover on the c/case.
You may be able to use copper pipe and make it a snug fit arond the t/case.

walker wrote:I think it was Ritters in Melbourne that used to do a fix on this but i am not sure what they did. The fix definately was all internal and did not have any external pipe.

Just pull the seal between them ????

popeye wrote:

walker wrote:I think it was Ritters in Melbourne that used to do a fix on this but i am not sure what they did. The fix definately was all internal and did not have any external pipe.

Just pull the seal between them ????

If he removes the seal then he may as well put a new one in while he's there

The seal is the problem! The oil thrown around in the transfer gets flung into the gearbox.

I did this many years ago, but I made sure that I put a tiny hole in the gearbox end, if I recall a 0.5MM drill after soldering up the nipple for the pipe.
So if you are going UP UP UP a steep hill , all the oil does not drain from the box to the case.
Its best to replace the seal, but you need special circlip pliers to remove the mainshaft circlip.
Regards Philip A

Thanks everyone.
The point is to "fix" this without pulling the 'box out/apart.
So a bootyfab'd bit of pipe is what it will be!
Philip is .5 of a mill enough??
I was thinking of 6 mill minimum!
I here what you say about going up hills but will hypoid 90 flow through .5 mm hole under it's own steam?

Cheers
Dave

billybus wrote:Thanks everyone.
The point is to "fix" this without pulling the 'box out/apart.
So a bootyfab'd bit of pipe is what it will be!
Philip is .5 of a mill enough??
I was thinking of 6 mill minimum!
I here what you say about going up hills but will hypoid 90 flow through .5 mm hole under it's own steam?

Cheers
Dave

I wouldn't stress. I pressure pump 90w oil into everything. The amount of time it takes for 500mL to flow through a 4mm tube @ 20psi is amasing. (long time) Just use junk you have lying around.

I wouldnt be putting 90w into a 4spd rangie box, you will stuff it in no time and then it will have to come out. I used to just check mine every 2 months and drain/ fill as needed.

The correect oil for a LT95 and transfer is 20-50 engine oil.
A 0.5 MM hole will leak more than goes in through the seal. In any case remember the hole can leak 24 hours a day.

Regards Philip A

Philip A wrote:The correect oil for a LT95 and transfer is 20-50 engine oil.
A 0.5 MM hole will leak more than goes in through the seal. In any case remember the hole can leak 24 hours a day.

Regards Philip A

as usual I'm confused

is this tube for the gear oil to travel through and self level, or is it to equalise any pressure difference?

Isn't the T-case LEVEL/FILL plug on an LT95 lower down than the gearbox LEVEL/FILL plug? Therefore, if you do this mod, you will permanently have an overfull T-case and a box with a lower level than it should have? Which is really no different to what is happening at the moment???

ISUZUROVER wrote:Isn't the T-case drain plug on an LT95 lower down than the gearbox drain plug? Therefore, if you do this mod, you will permanently have an overfull T-case and a box with a lower level than it should have? Which is really no different to what is happening at the moment???

Yeah, you would need to drill and tap the LEVEL plugs so as when oil has reached the level plug hole it will drain back to the g/box.
Even then from memory the t/case level plug is lower than the g/box level plug so that may not work at all.

Loanrangie wrote:
Yeah, you would need to drill and tap the LEVEL plugs so as when oil has reached the level plug hole it will drain back to the g/box.
Even then from memory the t/case level plug is lower than the g/box level plug so that may not work at all.

Sorry - brain fade on my part - meant to say LEVEL plug in the first place - have fixed my post. That is my point exactly Loanrangie - the plugs are at different levels so you will have an overfull t-case and an underfull box???

ISUZUROVER wrote:

Loanrangie wrote:
Yeah, you would need to drill and tap the LEVEL plugs so as when oil has reached the level plug hole it will drain back to the g/box.
Even then from memory the t/case level plug is lower than the g/box level plug so that may not work at all.

Sorry - brain fade on my part - meant to say LEVEL plug in the first place - have fixed my post. That is my point exactly Loanrangie - the plugs are at different levels so you will have an overfull t-case and an underfull box???

I cant see how - if linked they will only fill to the one level, ie - the gear box fill height. box normal, case overfull.

If both levels are correct to start with then any excess from the 'box will drip down as far as the 'box level plug and top up the t-case to it's correct level!

I run with no carpets or anything and I can hear the t-case getting noisier aftet a few long hot runs. (about 1/2 a litre a week!)

The first time I drained/filled etc I was amazed at the silence!

I know your'e suposed to use engine oil in the 'box but how many mechanics over the years have used hypoid?

I've stripped one of these 'boxes before and everything in there is BIG so how can hypoid do any harm?

Cheers
Dave

this mod has been done many times and for many years.

Rangerover club put out a how to on this. Torque publication.

Michael.

billybus wrote:If

I know your'e suposed to use engine oil in the 'box but how many mechanics over the years have used hypoid?

I've stripped one of these 'boxes before and everything in there is BIG so how can hypoid do any harm?

Cheers
Dave

EP90 in cold weather will shear the oil pump drive in the LT95.
I have seen this in mine, which had EP 90 when I bought it.
EP90 also eats away the bronze shims on the intermediate shaft in the transfer case. Mine were eaten away when I bought it.
Regards Philip A

ISUZUROVER wrote:

Loanrangie wrote:
Even then from memory the t/case level plug is lower than the g/box level plug so that may not work at all.

Sorry - brain fade on my part - meant to say LEVEL plug in the first place - have fixed my post. That is my point exactly Loanrangie - the plugs are at different levels so you will have an overfull t-case and an underfull box???

Yes, exactly , i cant see how it would work , but it obviously has been done before somehow.

The 'box level plug is higher than the t-case.

When both levels are correct all is well. Then oil is pumped from the t-case to the 'box... you stop driving and the excess in the 'box flows back to the t-case so both levels are correct again!

Not much help though if hypoid damages the 'box? (Philip)

Almost all gearboxes have got bronze in them so how does hypoid oil damage it?
Sheared gear oil pump..... I can see that being a problem!

If I am to do this can I stick some synthetic stuff in both t-case and 'box?

If so what oil can I use in BOTH 'boxes?


Dave

Engine oil 20-50 for BOTH. Not 20-60 but 20-50.
It is said that You can also use a GL4 gear oil such as 75-90 Valvoline which is a similar viscosity , but I have never tried it. This is a non EP oil.
I tried Penrite 20-60 though and I could not change gear when it got hot.
Trust me on this. Been there done that many years ago.
Regards Philip A

Im using VMX 80.

Seems good so far. Slightly smoother shifting than I originally had.

Dave.

DaveS3 wrote:Im using VMX 80.

A GL4 rated gear oil of appropriate viscosity will be much better than engine oil. I use VMX80 in my LT85 (recommended by Mal Story) and am happy with how it works. Big improvement in cold shifting. GL5 oils (as mentioned) have extra anti-wear additives that attack phosphor-bronze bushes.

Mal told me that the only LT95s he ever saw with sheared oil pump drives were early models that were driven in the snow country with EP90 in them. But living in brisbane he probably wouldn't see to many boxes that had been through really cold temperatures.