'82 4-Speed Trans - do these gears look okay??
10-07-2016, 07:59 PM
#1
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Thread Starter
'82 4-Speed Trans - do these gears look okay??
Have the transmission and transfer case out of my '82. Was going to replace with an L52 but thought I would save the cash right now so just cleaning it up. I don't have any experience with transmissions so I need you folks to take a look at these gears and tell me if they look okay. The smaller gears seem to be "squared off" on the top of the teeth and there seems to be a couple of teeth missing (sounds like a bad date)....but does this look normal? When I pulled the drain plug there was a little bit of metal shavings on the magnet but nothing that I would have thought to be excessive.
Thanks for your help!!
Thanks for your help!!
10-07-2016, 08:45 PM
#2
Registered User
I don't know the layout of these trannys well , but I'm pretty near certain that the straight cut gear is part of the reversing gears.
It is normal in an older tranny for the reverse gears to show some edge chipping, because reverse is not syncronised and it is easy to grind when selecting it.
The forward gears (helical cut for quiet operation and strength) are all in constant mesh with each other and are selected by the sliding muffs which lock and unlock them from turning on the mainshaft.
From what I can see, your gears look OK. I don't see any missing teeth.
I'd be more concerned that the ball bearings are smooth and tight, so that the endplay of the main and countershafts are properly controlled, and that the brass syncro blocking rings are still effective.
How did the tranny shift before you opened it up?? It is seldom necessary to open a manual tranny to 'clean' it. A simple flush with diesel or kerosene is sufficient.
If it ain't broke, don't fix it.
It is normal in an older tranny for the reverse gears to show some edge chipping, because reverse is not syncronised and it is easy to grind when selecting it.
The forward gears (helical cut for quiet operation and strength) are all in constant mesh with each other and are selected by the sliding muffs which lock and unlock them from turning on the mainshaft.
From what I can see, your gears look OK. I don't see any missing teeth.
I'd be more concerned that the ball bearings are smooth and tight, so that the endplay of the main and countershafts are properly controlled, and that the brass syncro blocking rings are still effective.
How did the tranny shift before you opened it up?? It is seldom necessary to open a manual tranny to 'clean' it. A simple flush with diesel or kerosene is sufficient.
If it ain't broke, don't fix it.
Last edited by millball; 10-07-2016 at 08:57 PM.
10-07-2016, 09:04 PM
#3
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Thread Starter
It seemed to shift great before I started the restoration...primarily I am cleaning the outside of the cases (it was a greasy pig). Thanks for the info. I have some new gaskets coming so that hopefully I can keep all the fluid where it belongs!
10-07-2016, 09:40 PM
#4
Registered User
For many oil sealing applications, gaskets are obsolete tech, and form in place products do a better job than any composition gasket can.
The genuine Toyota FIPG goo is certainly well thought of.
I find that the Permatex Ultra-Grey works well for me in this type service.
Surface prep is everything. most sealants won't adhere to an oily surface.
Acetone is your friend.
The genuine Toyota FIPG goo is certainly well thought of.
I find that the Permatex Ultra-Grey works well for me in this type service.
Surface prep is everything. most sealants won't adhere to an oily surface.
Acetone is your friend.
Last edited by millball; 10-07-2016 at 09:43 PM.
10-08-2016, 05:38 AM
#5
Registered User
Thread Starter
Great info! I wasn't sure if I could/should apply that here but if it will keep me from having to clean this thing up again...I'll do just about anything! Permatex it is...
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