Shox Dr Posted May 20, 2008 Share Posted May 20, 2008 After my newly rebuilt R380 Gearbox threw a bearing, more than likley due to excesive heat. I'm fitting an external Oil cooler, this then got me thinking about using the same type of Oil (pref Syn) in both the Gearbox (R380) and Transfer (LT230) Boxes. Since refitting the gearbox I have noticed both get hot even under light load. If I can run the same oil I could then modify the transfer box so as both boxes were connected via an external Electric Oil pump, a proper Oil filter and Cooler, enabling both boxes to stay cool and clean. Has anyone heard of this been done, and if so what type of oil would you suggest is used. Quote Link to comment Share on other sites More sharing options...
western Posted May 20, 2008 Share Posted May 20, 2008 Don't, the main gearbox has a built in oil pump. use only ATF or MTF94 fluid, it won't last long running on EP90 the pump cannot cope with the heavier grade oil, & only use the EP90 in the transferbox, both boxes have different requirements to allow for bearing & gear loading & if the incorrect oil is used they won't last very long resulting in more bigger expense when they go bang. a oil cooler for the main gearbox is a good move if your doing a lot of heavy towing or in hot climates. Quote Link to comment Share on other sites More sharing options...
silvio Posted May 20, 2008 Share Posted May 20, 2008 ...and if you want your transfer to run cooler and with a bit more oil (almost 1 litre), for 85 euro you could buy this: which can be found here: http://www.africaland.it/accessori.htm No, I have no economic interest in the business, am just a member/moderator of the Africaland forum. Quote Link to comment Share on other sites More sharing options...
Shox Dr Posted May 20, 2008 Author Share Posted May 20, 2008 Western; That's the reason for fitting an external pump (ebay item# 270235102497), as for oil there are new blends, (for want of a better description) of oils that cover the requirements of both ATF and EP90. Besides the external pump can more than cope with a higher viscosoty oil oil. Silvio; I have seen these before. There is one that even has a built-in pump. Please keep the suggesstions/comments coming Quote Link to comment Share on other sites More sharing options...
silvio Posted May 20, 2008 Share Posted May 20, 2008 Sorry, but I see no point in fitting an "in-built" pump in the transfer: the pump must be part of the gearbox design, the shafts must have oil galleys and all the rest to convey the oil in the required places. The LT 230 was designed just for splash lubrication. As for the R380, LR makes an external thermostat housing with provision for an external circuit, which can be connected to a radiator. Td5 defenders marketed outside Europe come with this external circuit as standard fitting; Ashcroft supplied a kit with all the required parts to retrofit a european market defender. Quote Link to comment Share on other sites More sharing options...
Shox Dr Posted May 20, 2008 Author Share Posted May 20, 2008 I understand what you are saying, about the lack of design within the LT230, and one LR make is nothing more than a splash type pump. The primary purpose of mine, would be to cool the oil, however depending on where I fit the return I could maximise the "splash" effect. Quote Link to comment Share on other sites More sharing options...
pat_pending Posted May 20, 2008 Share Posted May 20, 2008 I'm not aware of any oil grade that would cope with the requirements of both boxes. It would still have to be thin enough to avoid strain on the 380s internal pump whatever the external pump could cope with. Even if you found one, with what you're suggesting you may have trouble balancing the return flow to each box. You could end up emptying one box and overfilling the other. I'd use the standard L/R 380 pipework to a bigger cooler element, leave the 230 as is, and use good quality synthetic oil to the correct spec' for each box. Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted May 21, 2008 Share Posted May 21, 2008 The words EP mean Extreme Pressure, and is designed for a specific purpose, TBoxs mesh gears require EP spec, so don't think that no EP will do, however you tweak it up, ie cooler, more oil, or sparkly party glitter would ensue Nige Quote Link to comment Share on other sites More sharing options...
mmgemini Posted May 21, 2008 Share Posted May 21, 2008 I fitted a gearbox oil cooler after my first trip to southen Africa to reduce the heat from the seatbox area. A proper oil radiator. It didn't make any difference on our next trip. A year ago I bought an X-Brake from Simon. That combined with the removal of the exhaust center box reduced most of the heat from the seatbox area. My thoughts on this was that the handbrake drum produces a lot of heat which is then thrown forward towards the front of the vehicle by the brake drum. Worth a thought ?? mike Quote Link to comment Share on other sites More sharing options...
JimAttrill Posted May 21, 2008 Share Posted May 21, 2008 So they did start making the sump extensions in Italy then Silvio? We have stopped selling them now as the guy who cast them decided he wanted double the money. At least I fitted one before that happened. We are considering making fabricated steel ones out of laser cut bits. Sounds a bit too much like hard work for us to me. Quote Link to comment Share on other sites More sharing options...
silvio Posted May 21, 2008 Share Posted May 21, 2008 Yes Jim, your thread about the bigger sump raised a lot of interest among the african travellers in Africaland, so as soon as the Post gently decided to ship me the sump I was practically forced to send it over to Turin, in a foundry shop, where it was measured, X-rayed et cetera et cetera and a copy has been prepared. For clearance and simplicity reasons the extra fins were deleted. However, I fear it hasn'tbeen a big deal, as the cost of preparing the mould for casting was remarkable, and I doubt that the forum chairman, who organized this reproducting affair, managed to get his money back fully. Quote Link to comment Share on other sites More sharing options...
JimAttrill Posted May 21, 2008 Share Posted May 21, 2008 We still get a couple of requests a month for them, maybe I should redirect them. They are often in Brazil or places like that so it would make no difference to them. Quote Link to comment Share on other sites More sharing options...
silvio Posted May 21, 2008 Share Posted May 21, 2008 That'd be very nice of you, Jim: Roberto the Chairman will appreciate it! Quote Link to comment Share on other sites More sharing options...
Shox Dr Posted May 21, 2008 Author Share Posted May 21, 2008 well it was worth a thought I suppose. Now the thread has moved on to extended sumps for transfer boxes, would it not be easier and cheaper to modify a standard plate. Quote Link to comment Share on other sites More sharing options...
Ex Member Posted May 21, 2008 Share Posted May 21, 2008 .....would it not be easier and cheaper to modify a standard plate. If you are good at welding aluminium and machining the face after welding. Quote Link to comment Share on other sites More sharing options...
Shox Dr Posted May 21, 2008 Author Share Posted May 21, 2008 If you are good at welding aluminium and machining the face after welding. What face would you need to machine. Luckly TIG welding isn't a problem, it's my day job Quote Link to comment Share on other sites More sharing options...
paintman Posted May 21, 2008 Share Posted May 21, 2008 Just to go back to the original question, using EP in a box that specifies ATF/MTF WILL make it go bang. And will also invalidate any warranty claim. Quote Link to comment Share on other sites More sharing options...
rick Posted May 28, 2008 Share Posted May 28, 2008 you can run a full synthetic 75W-90 like Torco RTF or Motul Gear 300 in both without a problem. Both these oils are dual rated GL-4/5 so are safe for yellow metals and have a robust EP package, and the Motul is thinner at 0*C than Castrol Syntrans 75W-85 that is commonly used in Australia to replace MTF94, as Gear 300 has a VI of 222. FWIW, no gearbox rebuilder in Australia will honour warranty if an ATF is used in an R380. At a minimum, most specify a 75W-80 MTF fluid like VMX-80 Quote Link to comment Share on other sites More sharing options...
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