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  #1  
Old August 27th, 2016, 07:28 PM
SARTech
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Transmission stuff

Is this bad?
Looks like time for a gearbox rebuild. Anyone done that themselves?
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  #2  
Old August 27th, 2016, 07:29 PM
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  #3  
Old August 27th, 2016, 07:41 PM
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Quote:
Originally Posted by Jymmiejamz View Post
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I think i fixed the images, sorry.
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  #4  
Old August 27th, 2016, 07:42 PM
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Works now.

Do you have any symptoms?
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  #5  
Old August 27th, 2016, 07:50 PM
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Originally Posted by Jymmiejamz View Post
No image...
Initially had a 'not good' noise in 3rd and 5th. Replaced the fluid and now it quite, no symptoms or noise.
I just purchased the rig, drove it home about 100 miles. at about 30 miles from home the trany started making noise. When I got it home I drained it and it was almost empty. I refilled it and drove it around some, the noise went away after about 20-30 miles and I noted a big oil leak. Found the source of the lead, there was a bolt missing from the top housing that the transferase selected lever goes into. I installed a new bolt, drained and refilled the tray. The pictures are from the second drain/refill. At present, no leaks or noise.
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  #6  
Old August 27th, 2016, 09:18 PM
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Honestly, it's far less hassle to just order one from Ashcroft. I can certainly do a transmission rebuild by myself, but I won't ever do another cz they make it such a no-brainer.
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  #7  
Old August 27th, 2016, 09:42 PM
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If the thing shifts fine and does not make a bunch of noise, I would not mess with it until something blew up.

That's me.
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  #8  
Old August 27th, 2016, 09:56 PM
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Quote:
Originally Posted by SARTech View Post
Is this bad?
Looks like time for a gearbox rebuild. Anyone done that themselves?
What transmission do you have?
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  #9  
Old August 27th, 2016, 10:37 PM
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That looks like a ground up synchro hub. I would clean it out and keep running it as I don't see any chunks.
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  #10  
Old August 27th, 2016, 11:22 PM
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Quote:
Originally Posted by Grover View Post
What transmission do you have?
LT77,
1989 Defender 90.
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  #11  
Old August 27th, 2016, 11:23 PM
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"That looks like a ground up synchro hub. I would clean it out and keep running it as I don't see any chunks."

So what would you run in it and for how long to make things settle out in the bottom ?
Maybe something thin like ATF or kerosene for a couple of slow miles in the neighborhood?
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  #12  
Old August 27th, 2016, 11:25 PM
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Quote:
Originally Posted by evilfij View Post
That looks like a ground up synchro hub. I would clean it out and keep running it as I don't see any chunks.
No big chunks, some soft flattened metal flakes.

------ Follow up post added August 27th, 2016 08:32 PM ------

Quote:
Originally Posted by Contractor View Post
If the thing shifts fine and does not make a bunch of noise, I would not mess with it until something blew up.

That's me.
Thanks, I think I'm leaning that way. If it aint totally broke why fix it?
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  #13  
Old August 27th, 2016, 11:43 PM
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LT77s original spec was Type F ATF. I would buy some cheap stuff at Walmart and run it for 100 miles or so (maybe less depending on how much cheap ATF I had on hand) and drain and then repeat and then switch over to Redline MTL once you get no more crap. I would go easy on it until I was sure it was clean.
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  #14  
Old August 28th, 2016, 04:34 AM
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Quote:
Originally Posted by evilfij View Post
LT77s original spec was Type F ATF. I would buy some cheap stuff at Walmart and run it for 100 miles or so (maybe less depending on how much cheap ATF I had on hand) and drain and then repeat and then switch over to Redline MTL once you get no more crap. I would go easy on it until I was sure it was clean.
What he says. You may also be a victim of PO maintenance negligence. I'd replace the other fluids as well etc.
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  #15  
Old August 28th, 2016, 08:28 AM
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You didn't mention if you have to depend on this for transportation.
I would order an R380 replacement from Ashcroft and have it on hand so when the LT77 fails you can swap it out at the next available time slot, but that's just how I operate.
Also note a failing clutch or badly adjusted clutch can cause you to grind gears which may have been the cause of the synchros being chewed to shreds.
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  #16  
Old August 28th, 2016, 08:36 AM
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Fill it up with either Penzoil Synchromesh or Redline. The Penzoil is less expensive, easy to find locally and makes my LT77 shift better than with the Redline.
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  #17  
Old August 28th, 2016, 10:59 AM
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Quote:
Originally Posted by Contractor View Post
Fill it up with either Penzoil Synchromesh or Redline. The Penzoil is less expensive, easy to find locally and makes my LT77 shift better than with the Redline.
SACRILEGE! Everybody here believes Redline MTL is what pours out of the Holy Grail!



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  #18  
Old August 28th, 2016, 07:55 PM
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Is that a filter in the first pic?
Does the r380 have a filter too?
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  #19  
Old August 28th, 2016, 08:25 PM
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The act of rebuilding a gearbox isn't difficult.

The question is whether or not you know which parts need to replaced and which can be kept. With the amount of grey metal on that magnet, you're going to need to replace more than just the synchros, shift forks, bearings, and oil pump.
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  #20  
Old August 28th, 2016, 09:06 PM
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Quote:
Originally Posted by Grover View Post
Is that a filter in the first pic?
Does the r380 have a filter too?
here
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File Type: pdf R380 Gearbox Overhaul Manual.pdf (1.22 MB, 12 views)
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