How hard is it to recondition an LT77 box..?

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JonnyP

JonnyP

Well-Known Member
Posts
1,918
Location
Sunny Cornwall
I picked one up last night for £20. Its only done 76k miles, but before I go through all the hassle of fitting it, I would like to make sure its ok.
What do I need to look for reg ware n tare..?
If it is worn out, how hard are they to make good..? Do I need special tools..?
Transfer box too..
Cheers :)
 
they need special tools, you may find the odd box you can get away with but majority you wont,usually when you recon one you replace the 5 main bearings and the 5 baulk rings ,the main issues with lt77 was the wear on mainshaft splines ,1st and 2nd gear selection on h suffix boxes and excessive endfloat noticed on input shaft ,check endfloat both ends and try turning input shaft with one hand while putting some force on rear splines in each gear ,transfer box can be done without special tools check it the same in both hi/low while rotating both out put flanges in diff lock ,then counter wise when out feeling for play in diff gears if you lived neare id lend you the tools but cornwalls a tadge far
 
jamesmartin said:
they need special tools, you may find the odd box you can get away with but majority you wont,usually when you recon one you replace the 5 main bearings and the 5 baulk rings ,the main issues with lt77 was the wear on mainshaft splines ,1st and 2nd gear selection on h suffix boxes and excessive endfloat noticed on input shaft ,check endfloat both ends and try turning input shaft with one hand while putting some force on rear splines in each gear ,transfer box can be done without special tools check it the same in both hi/low while rotating both out put flanges in diff lock ,then counter wise when out feeling for play in diff gears if you lived neare id lend you the tools but cornwalls a tadge far
Click to expand...

Thanks James.. Sounds way out of my league, so I think I will take a chance n fit it straight in my disco. Its got to be better than the box I have in.
I have a lottery gearbox, you just don't know what gear you are gonna get when you change up or down.. :rolleyes:
 
jamesmartin said:
should return positively from either side to 3rd 4th alignment and haver no feel of play when selecting
Click to expand...

Will take notice when I am next in it, but I think it just flops about.. ooh err mrs. I can compare it with the new box I suppose. See if there is a difference..
 
jamesmartin said:
worth looking at if it doesnt crunch going into gear and box isnt noisy and may be fixed by removing center consol
Click to expand...

It does crunch if I go from 4th to 2nd too early, but I have changed my driving style and it does not crunch any more. When I changed the clutch cylinders, I had loads of hassle bleeding the system and it chrunched all the time (esp going into reverse) but it suddenly cleared the air lock and all is better now, its just going into 4th from 3rd, I sometimes get 2nd. I will have a looksy at the spare one, so I can see whats what easier..
Cheers chap :)
 
My gear selecter in the car does feel sloppy compared to the new one I got. Can I easily change the bias plate over from the new box into the one in me car..?
I started taking the top off the new box but decided it better to ask before I went further.
Is the bias plate the next bit to undo in this pic..?
2012-12-23124527_zpsaae11f83.jpg
 
id have just swapped complete tops its easier to put springs back on ,but bias plate is already unbolted it sticks up behind the stick and holds lever down ,set it with the whole gear levceron so that it springs back to exact 3rd 4th alignment
 
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