1995 SFA Gearbox/Transfer Oil Levels

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Tim86
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Real Name: Tim

Wed Feb 14, 2018 10:22 pm

Pulling the filler plugs off the gearbox and transfer case of my 1995 (G52 gearbox and standard transfer box) I note that the oil pours out the transfer filler (about 200ml) and nothing out the gearbox filler (can't reach the oil when I stick my finger in). The truck is on a level surface with the nose about 50mm too low due to sagged leaves (OMEmu - how may I fix this??). I take it that the gearbox/transfer interface seal has given up?
Probably will only get around to pulling the box out in 2-3 years to replace the clutch and may set the car level before that by re-tensioning the front springs.

Will this be a train-smash if I refill both boxes to their correct levels and let them slowly equalize out?

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Mud Dog
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Vehicle: '90 SFA Hilux DC 4X4, Full OME, 110mm lift. Brospeed branch, 50mm ss freeflow exhaust. 30 x 9.5 Discoverer S/T's on Viper mags. L/R tank. (AWOL) '98 LTD 2.4 SFA, dual battery system. Dobinson suspension, LR tanks, 31" BF mud's.
Real Name: Andy

Wed Feb 14, 2018 10:58 pm

No train smash, but not ideal. The head-space of air is there to take up some of the expansion when the boxes heat up .... if they were filled to the brim, oil would be forced out with heat expansion. The X-fer box is already full (overflowing you said), so just fill the gearbox. Fill till it runs out at the filler plug and close it up. If the seal is indeed leaking between the two boxes, expanding oil from the X-fer box will be forced back into the gearbox. We're really only talking about a small amount of oil here.
The gearbox will vent through the lever turret.

Do the seals right through when you're ready.
When your road comes to an end ...... you need a HILUX!.

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Life is like a jar of Jalapeño peppers ... what you do today, might burn your ass tomorrow.
Don't take life too seriously ..... no-one gets out alive.
It's not about waiting for storms to pass. It's about learning to dance in the rain.
And be yourself ..... everyone else is taken!

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Tim86
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Thu Feb 15, 2018 7:38 am

Ah so the boxes don't actually have designated breathers then - thanks for the peace of mind Mud Dog.

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niclemaitre
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Thu Feb 15, 2018 8:08 am

To fix the sag: http://www.hilux4x4.co.za/strengthen-hi ... /index.php

No breathers on the gearbox or transfer
Happy trails
Nic

SFA '97 DC affirmatively shopped
SFA '87 DC "Rooies"

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Tim86
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Thu Feb 15, 2018 10:06 am

Thanks Nic, it is actually the re-tempering/tensioning of the leaves I am looking at. I'm not sure whether to go hot or cold and which will last longer. My truck has had the saddles done and strengthened already, probably when they installed the OME leaves..

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Mud Dog
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Joined: Tue Apr 29, 2008 2:18 am
Town: East London
Vehicle: '90 SFA Hilux DC 4X4, Full OME, 110mm lift. Brospeed branch, 50mm ss freeflow exhaust. 30 x 9.5 Discoverer S/T's on Viper mags. L/R tank. (AWOL) '98 LTD 2.4 SFA, dual battery system. Dobinson suspension, LR tanks, 31" BF mud's.
Real Name: Andy

Thu Feb 15, 2018 11:17 am

Don't do the heat treatment, you will be sorry!!

All suspensions will sag a bit as they settle down and personally I would leave it be unless it's really bad. I had OME fitted to my first van and after the initial settling of about 20mm they settled no further even after some serious abuse.

The most common cause of the front sag is the spring pedestals (saddles) collapsing on the outer edges, but you say that this has already been done. The other thing could be the weight in the front - do you have a motor conversion (heavier motor than standard), do you have a winch fitted or do you have an integrated bull-bar / bumper fitted that's heavier than standard?

If you have additional weight in the front, then have an extra blade fitted to the front leaf packs (the heavy duty option).
If not and you're going to do something to the springs, rather do the cold press reshaping. I had a sag in front on one side with Dobinson's suspension about 4 yrs ago and sorted it that way .... still good today and I've done some rough stuff with it over those years. I did a post with pics about it .... will look for it and post the link here for you.
When your road comes to an end ...... you need a HILUX!.

Image
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Life is like a jar of Jalapeño peppers ... what you do today, might burn your ass tomorrow.
Don't take life too seriously ..... no-one gets out alive.
It's not about waiting for storms to pass. It's about learning to dance in the rain.
And be yourself ..... everyone else is taken!

User avatar
Mud Dog
Moderator
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Posts: 28128
Joined: Tue Apr 29, 2008 2:18 am
Town: East London
Vehicle: '90 SFA Hilux DC 4X4, Full OME, 110mm lift. Brospeed branch, 50mm ss freeflow exhaust. 30 x 9.5 Discoverer S/T's on Viper mags. L/R tank. (AWOL) '98 LTD 2.4 SFA, dual battery system. Dobinson suspension, LR tanks, 31" BF mud's.
Real Name: Andy

Thu Feb 15, 2018 11:20 am

Here's that link ...... viewtopic.php?f=3&t=28052&p=331711
When your road comes to an end ...... you need a HILUX!.

Image
Image

Life is like a jar of Jalapeño peppers ... what you do today, might burn your ass tomorrow.
Don't take life too seriously ..... no-one gets out alive.
It's not about waiting for storms to pass. It's about learning to dance in the rain.
And be yourself ..... everyone else is taken!

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