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western

Poorly LT230

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No, the tool that bolts to the input gear, lst105, it provides the right diameter to wrap the string around. If not right, torque will be off.

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50 minutes ago, cackshifter said:

Did you have to buy the service tool for the intermediate shaft torque measurement, or did you improvise somehow?

I improvised it can't be that far out, no idea where I could get the tool from for  a one off job, 

 

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3 hours ago, western said:

I improvised it can't be that far out, no idea where I could get the tool from for  a one off job, 

 

I've done several rebuilds doing this by feel too. You can tell when it's right having set the preload with string and a spring scale on the other sets. Ain't rocket science to extrapolate! 

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If this transfer box breaks again, it will be replaced with a new one. 

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 fully bolted in place, got more to do tomorrow. ------ Both props, diff-lock linkage, park brake assembly, oil fill, output gear from main gearbox, floor plates.

 

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Not going to have it galvanised, Ralph? ;)

  • Haha 2

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Nope, it's a alloy casing. Gave it a good clean inside & out. 

 

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Was a joke !😄😣

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galvanizing might be a problem, but not anodizing .. I recommend blue 😅

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Just got to refit these bits - - - - -  gearbox tunnel panel, cubby box, mats, tools tidy up & put away, road test, 

It's extremely windy weather today but glad it's not raining. 

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Nicely done Ralph , as usual. Did you find any reason for the bearing failure ?

cheers

Steve b

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Not that I could tell,

no damage to any gear teeth,

I will do a oil change next weekend, 110 will be doing 30 miles a day this coming week, so that should get the transfer box up to full temp & flush out any remaining bits, the 2 magnetic drain plugs should catch any thing. 

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Interesting thread Ralph. I think the cause is clear: It watched the engine get rebuilt and wanted some of the attention. I hope the gearbox doesn't get an ideas :D

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On 3/20/2020 at 12:05 AM, western said:

If this transfer box breaks again, it will be replaced with a new one. 

The professional rebuilders I have spoken to have all done it by feel. Should just have the tiniest bit of preload. Timken do a data sheet regarding the preload on taper bearings - I adhered to that when I did mine.

 

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Wish I had know that earlier, only had my genuine workshop manual to go by.

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16 hours ago, monkie said:

Interesting thread Ralph. I think the cause is clear: It watched the engine get rebuilt and wanted some of the attention. I hope the gearbox doesn't get an ideas :D

I have experienced that same phenomenon, and even between two vehicles. Everything's fine, then something happens, and before you know it there are another 3 things demanding attention as well. 

Just wondering if the overdrive might have had some influence on the failure, for a given speed the engine revs are lower but to get that same power to overcome resistance the torque must be correspondingly higher. It might have accelerated the failure but it was probably just the bearing got tired of living.

But great result Ralph.

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Been for a 10 mile drive including a blast along dual carriageway,  seems a bit noisier than previously, may have a bit to much preload on the intermediate shaft bearings, but to rectify it will mean pulling transfer box off or slide it back on extra long studs, if I do that then the bearings & collapsible tube will get replaced or I'll just swap the complete box, going to see how it goes this week & change the oil next weekend, 

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I don't really know why they don't preload by angle tightening tbh. It's easy to find when you've taken out any clearance with a test indicator, then a certain angle change on the nut gives a desired preload. 

Anyhow... I've always set mine up a tad on the tighter side one the grounds that there's a good bit of give in the case, and it's likely to settle as the new bearings bed in. All have run nicely. Possible the teeth have worn a little when running with a collapsed bearing and now they're noisy when running "correctly". It's incredible how much abuse a failing bearing will suffer and how long they hold on before totally letting go. My old LT85 was running quite happily with a cage that had split, it was just noisy AF.

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I'll give it a few weeks, will do a oil change & magnetic plug check next weekend, then run it for another 4 weeks & check again. 

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