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Old 09-14-2011, 07:00 PM   #1 (permalink)
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harley ough
how to tear into the L52 transmission

well i rebuilt (tore apart) 2 L52s last night to make one that worked.
most of these picts u can compare to yours for taking stuff apart.
first off the L52 is the first 5 speed they put into their us trucks. the L50 is basically the same but only a 4 speed.
-there are 2 different sized input bearing used in these trannies. butt the input/output/lower counter shafts are the same. but the housings, front bearing retainer and bearing are different and not interchangeable.
-some things i would like to point out are get a medium brass hammer and punch (u can hit the gears and they will not get messed up). snap ring pliers.
here are the pages from the fsm for the L52
Click the image to open in full size.
Click the image to open in full size.
Click the image to open in full size.

i took these picts in reverse once i figured out how to take one apart.
i will try to do this in removal order from a complete tranny.


top view of transmission with the cover case/shift lever retainer removed
Click the image to open in full size.
Click the image to open in full size.

input shaft with bearing retainer on
Click the image to open in full size.

-front bearing retainer off.
-you do not have to remove the snap rings on the in upper input shaft unless you are changing the bearing etc behind it.
-remove the lower 2 on the lower counter shaft end (the one below the input shaft with the splines).
Click the image to open in full size.

-tail end of output shaft up top and lower counter shaft below with the shift fork.
-remove 4x4 sleeve off of upper output shaft. NOTE!!! when reinstalling this sleeve you MUST put it on with the line towards the front just like in this picture. if not your output splines will strip off and you will be screwed and need a new output shaft. notice in the last picture below you can see the splines that have been stripped off. someone else s screw up and my clean up.
Click the image to open in full size.

-sleeve removed and the snap ring removed that was infront of it.
-also remove the other snap ring infront of the one that is removed. it is touching the 5th gear on the same shaft (output shaft) as the sleeve.
Click the image to open in full size.

-with the sleeve and both snap rings removed from the output shaft. you do not have to remove these snap rings if you are not removing the bearing/gears.
Click the image to open in full size.

-with counter shaft retaining nut removed and gear spline no. 5 and synch ring removed. also 1/2 of the bearing slid out (only for the picture).
-drive dowel pin out of the 5th gear shift fork/shaft
Click the image to open in full size.

-shift fork and counter 5th gear assy off.
-thrust washer and detent ball still on shaft, remove them.
Click the image to open in full size.

-remove thrust washer and detent ball.
-remove the 4, 12mm (head size) bolts with torx in the head, that secure the rear bearing retainer and remove bearing retainer.
Click the image to open in full size.

-remove upper retaining ring off of output shaft bearing outer edge.
-remove counter center bearing off of the lower counter shaft output.
-also remove center front bearing and snap rings.
-with these bearings removed from the lower counter shaft drop it down in the housing like in the picture. with the front of the counter shaft dropped down this will allow for you to seporate the input shaft/bearing/gears from the output shaft.
Click the image to open in full size.

-with the lower counter shaft dropped down this is the input shaft assy.pulled out only like 1 inch. you can see the snap ring (to the left of the brass synchro ring, on the splines down in there) that is pictured 2 pictures down, the one with the screwdriver pointing at it.
-pull input shaft out through the bellhousing side.
Click the image to open in full size.

-top view with input shaft assy. removed
Click the image to open in full size.

-front snap ring on output shaft. remove
Click the image to open in full size.

-removing clutch hub keys (there are 3 total) on clutch hub assy. no.2
Click the image to open in full size.

-clutch gear removal
Click the image to open in full size.

-clutch slider removed up through top opening.
Click the image to open in full size.

-third gear assy., bearing and synch ring sliding off through the bellhousing hole.
Click the image to open in full size.

-third gear assy/clutch hub no. 2 held inline removed from output shaft.
Click the image to open in full size.

-here is how the rings on the inside of the clutch hub have to line up. note how each keyway has the ring covering the gap. the 2 ends stop just past each of the keyways. if the rings are not installed like this on both sides the little keys will not be supported.make sure they are pushed all the way against the hub wall. like in the picture
Click the image to open in full size.

-slide the output shaft towards the front and stick the front of the output shaft out the input shaft bearing hole into the bellhousing. then lift up the output- output splined end up and out.
Click the image to open in full size.

-input and output shafts removed
-lower counter shaft in bottom and reverse gear on lower shaft in upper left of housing. above that the 5th gear shift lever with the ball and pin coming up out of it above the reverse shaft.
-outside of the housing on the bottom is the output shaft with the bad output splines from having the 4x4 sleeve put on backwards.
Click the image to open in full size.

-removal of counter shaft. slide out back side bearing hole and lift out the top cover hole.
Click the image to open in full size.

-counter shaft out and reverse gear slider/shaft and 5th gearshaft
Click the image to open in full size.


take your time and label everything. once the counter shaft and input/output shafts are back in put the rear bearing retainer on before you put back onthe counter 5th gear assy. good luck and if i forgot anything please chime in. or message me, because i know i forgot a bunch of stuff
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Last edited by INFINITY; 09-14-2011 at 08:23 PM.
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Old 09-15-2011, 06:23 AM   #2 (permalink)
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That's a good write up! Thanks a lot for that. I sometimes plan to do a good tutorial like that...then I get caught up just getting the job done and don't take pictures.

Reminds me of rebuilding my t-case...except way more complicated...
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Old 09-26-2011, 12:19 PM   #3 (permalink)
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Can the early model 4wd trannys internal parts be interchanged

My reasoning in asking is that I have a L42 i believe, side loader trans, where my gears are in good shape but the side cover is bent and it doesn't seal correctly and i was wondering if I could take those gears and put them in my L50 or 52 trans, top loader 4 speed?

Oh and I'm new so it may take a lil while to get used to you guys form of posting
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Old 10-11-2011, 06:35 PM   #4 (permalink)
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82 toyota diesel pickup 2wd L52

I just got back the L52 from autozone from having it rebuilt and the tranny is stuck in reverse. But the shifter is in neutral. I called the outfit in Minnesota who rebuilt it and they said there is a plug on the driver's side of the tranny and I have to stick a screwdriver in it to get it out of reverse. My question is what plug do I do this too. from what I can see there are three plugs. One is obviously the fill plug. The second one is above the fill plug that has a small spring in it and there is another one that has a screw in it to adjust something on the same side but higher up on the tranny.
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Old 10-13-2011, 09:53 AM   #5 (permalink)
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Start your own thread. This is off topic to this one and is buried way down where people might not see it.

Also, for questions about the inner workings of transmissions, you'll get a lot more response over on the Marlin Crawler forum.
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Old 10-13-2011, 05:09 PM   #6 (permalink)
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Thanks I'm new to this...But i did get it figured out. Thanks again.
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Old 10-14-2011, 06:27 AM   #7 (permalink)
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No problem. Welcome to yotatech!
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Old 10-16-2011, 10:07 AM   #8 (permalink)
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Infinity,
Sounds like your comfortable w/tearing transmissions apart, i built the trans {L52} in my '82 but ran into a snag when assembly time arrived..i didn't have the factory press that does inner/outer races at the same time..Ended up having a local rebuilder doing that part and assembled the rest myself..My question{s} to you are; does the W56{?} require a inner/outer bearing press too,on the w56 , the removable b-housing=are there different versions that adapt the trans to a V6 and I4 and finally is there a "most" desirable year/version to build? I'm a machinest and can fab. a new crossmember and move/patch the floor to accept differnt shifters..Thanks in advance for the imput.
Randy
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Old 10-16-2011, 11:57 AM   #9 (permalink)
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Quote:
Originally Posted by fustkarr View Post
Infinity,
Sounds like your comfortable w/tearing transmissions apart, i built the trans {L52} in my '82 but ran into a snag when assembly time arrived..i didn't have the factory press that does inner/outer races at the same time..Ended up having a local rebuilder doing that part and assembled the rest myself..My question{s} to you are; does the W56{?} require a inner/outer bearing press too,on the w56 , the removable b-housing=are there different versions that adapt the trans to a V6 and I4 and finally is there a "most" desirable year/version to build? I'm a machinest and can fab. a new crossmember and move/patch the floor to accept differnt shifters..Thanks in advance for the imput.
Randy
i have not had a chance to tear into a w56 etc.... besides a r150.
so i really cant answer any of your questions, sorry. people use the r154 tranny out a 22ret as a stronger tranny behind the 22r, etc...

i mainly did this write up because there was only a few picts of these transmissions on the internet. and i was tearing down one so i figured it could help someone else out.
they did not produce these trannys except for like 1.5 years or so. but it is a direct drop in for a 80-83 pickup from a 4 speed to a 5 speed. any later year tranny and you have to move the x-member back.
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-94 xcab 3.4L, marlin 2100lb clutch, SAS, arb/lockright, 5.29s, 4" lift, marlin 4.7 gear t-case, dual speed ford e-fan, XRC8, dual zuk mod using TJ springs
-81 4x4 short bed--preparing to build
-68 fj55--preparing to build

<---yes, that is victory blood!
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Old 11-12-2012, 08:19 PM   #10 (permalink)
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I know this thread is a year old, but only one i've found with useful info.
I've got an 81 with a 5 speed, i think that means its an l50, but i am not sure. the input bearing really started to howl on the freeway the other day.
To replace the input bearing do i just drop the transmission and pull the bearing retainer plate, that i see in the diagram. I've never messed with a transmission before, so bear with me haha, no pun intended.
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Old 11-12-2012, 09:27 PM   #11 (permalink)
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the though of tearing a transmissing apart scares the hell out of me......
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Old 11-13-2012, 07:00 AM   #12 (permalink)
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You're not alone...

I rebuilt my t-case, but the tranny is a whole other level.
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Old 11-13-2012, 07:48 AM   #13 (permalink)
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the though of tearing a transmissing apart scares the hell out of me......
That's why I have two spare transmissions and 3-4 transfer cases laying around...
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Old 01-18-2013, 11:10 AM   #14 (permalink)
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Quote:
Originally Posted by SCToy View Post
I know this thread is a year old, but only one i've found with useful info.
I've got an 81 with a 5 speed, i think that means its an l50, but i am not sure. the input bearing really started to howl on the freeway the other day.
To replace the input bearing do i just drop the transmission and pull the bearing retainer plate, that i see in the diagram. I've never messed with a transmission before, so bear with me haha, no pun intended.
i would like to know this also,im getting a L52 ready and theres is slight play in the input shaft(up and down,not in and out).its on the floor already and would be alot easier now.
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work sucks...period!

If you can't fix it with a hammer...it's an electrical problem!

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Old 01-21-2013, 03:21 PM   #15 (permalink)
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i would like to know this also,im getting a L52 ready and theres is slight play in the intput shaft(up and down,not in and out).its on the floor already and would be alot easier now.
I'm right there with ya. Have mine laying in the garage floor right now doing the clutch and I notice (just like you) that there is quite a bit of wobble and up/down/left/right play in the input shaft. Feels tight in/out (axial?) though. REALLY don't wanna tear into the whole thing but looks like you have to go pretty far in just to get that input shaft bearing out.
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Old 01-21-2013, 04:25 PM   #16 (permalink)
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govtmule,did you have any issues with noise or whining with that bearing?
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and 5125 bilsteins all around,custom rear bumper,33/10.50/15/BFGs,
Subaru wrx seats
custom console and door panels
power steering
OBX header
future upgrades
...................yep!

work sucks...period!

If you can't fix it with a hammer...it's an electrical problem!

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Old 01-22-2013, 05:02 AM   #17 (permalink)
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Quote:
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govtmule,did you have any issues with noise or whining with that bearing?

I did have some sporadic whining about a year ago but it went away. At the time I thought it may have been the throw-out bearing whining. But now that I have the trans out and have inspected the input shaft, I'm pretty sure it was the input shaft bearing that was whining.
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spooled rear, 33x10.50x15 KM2s, 3" suspension.


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Old 01-22-2013, 05:02 AM
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