Early h41 10-spline, where to get gaskets, seals, etc

[DesertFJ40]

Good day/ evening,
I acquired an early h41 with the 5.3 1st gearing. It has a 10-spline output shaft which allows it to mate up to a 3-speed transfer case without modifications. The inside appears very well with no obvious wear. Unsure if it has all the bearings, but I assume it does since everything spins freely with no obvious play. It's missing gaskets and seals; wondering if anyone has a lead on where to get a correct "rebuild kit" or source out some parts as I understand these are a rare breed.

Man-a-free shows a transmission overhaul kit for fj40/fj60 4-speed transmissions that cover the years from 1958-1989, but I'm unsure if that would be right as I assume the gaskets/bearings/seals changed over those 30 years when Land Cruisers converted from a single piece to a split transfer case as well as the transition between h41 to h42. Thanks for the help

here are some pics:

 

[mrtodds77]

I just got the same H41 transmission. Did you ever find the right rebuild kit? I am trying to rebuild mine too. The top of my h41 is a one piece and not a 2 piece. The FAQ says these were for the FJ55 from 69-71.

 

[Godfather90]

Just a quick question that is of nobodies' help buy my own- Is that what the rear PTO output spline looks like?

It looks like the output shaft has a feature for it.

Thanks,

Mike

 

[1911]

I bought mine rebuilt from Spector Off-road; you might check with them.

 

[DesertFJ40]

Just a quick question that is of nobodies' help buy my own- Is that what the rear PTO output spline looks like?

It looks like the output shaft has a feature for it.

Thanks,

Mike

The rear outputshaft, in this case a 10-spline, allows one to determine what type of transfer case and PTO gearbox would fit without modification. For this set up, you can fit a 3-speed transfer case with a non-split case PTO gear box. All non-split gearboxes should come with both forward and REAR PTO capabilities. At least from what I can remember.

Let me know if there's anything else.

I will be posting my findings for the early h41s soon. To me it appears like they are a combo of 3-speed and 4-speed transmission parts.

 

[DesertFJ40]

I bought mine rebuilt from Spector Off-road; you might check with them.

I got mine through spector as well, however, I bought the "non-rebuilt" version....Did you already install yours? How do you like it?

Thanks

 

[1911]

I got mine through spector as well, however, I bought the "non-rebuilt" version....Did you already install yours? How do you like it?

Thanks

Yes, I've had it installed and been driving it for 10-11 years now. Love it! With my 3.70 diff gears, 33" tires, and an Orion transfer case it is a great combination on and off-road. 1st gear is low but too low to use on the street. I can start out in 2nd gear if I'm pointed down hill, but 99% of the time I always start in 1st gear. 65 mph at 2500 rpm in 4th. The intervals between 1st, 2nd and 3rd are longer than an H42, so you want to wind up to about 3,000 rpm every time before you shift.

 

[DesertFJ40]

Note* I have yet to "rebuild" mine, this is just all the info i've been able to gather from staring at diagrams and comparing part numbers for a couple hours.*


Specter off-road only states that they recommend the replacement of the transmission's input shaft oil seal and a complete paper gasket set for these used H41s. Here is a comparison in notes between what they classify as a serviced transmission and a non-serviced (used) transmission.

*All bearings, shafts, and gears are inspected on both SERVICED/ NON SERVICED
*SERVICED transmissions are completely dismantled, cleaned, inspected, and reassembled.
*NON SERVICED are NOT dismantled, cleaned, and reassembled.
*NON SERVICED transmissions are recommended to have the oil seals and gaskets replaced.....That's it, and they even provide the part number for them.

The original Part number for the h41 input seal is: 90311-28003....But that number is NLA and superseded by the current and available 4-speed transmission part number as follows:

Input Oil Seal 90311-28004

I'm just comparing pictures from specter off-road as well as the Toyota diagrams between h41/h42, but the paper gasket set for an H41 appear identical to that of an h42. As from what I've read, the transmission housings are identical; the only differences are some of the internals. Here are the the individual gasket numbers that are available:

Front transmission gasket (input side): 33132-36010

Side transmission cover gasket: 33162-37030

Top Plate Cover Gasket: Original Part number for h41 is said to be NLA 33122-36010.....However, if the h41/h42 cases are identical, then the H42 top-plate number is
33122-36011

Unfortunately, I was unable to locate the part number for the rear cover gasket. I searched year the range of years from h41 1969 - h42 1984.....They provide the part number however, toyota part dealers state that the gasket is NLA.

Here is the list of the rear gaskets (maybe you can score one off of ebay?) :

H41 (1969-1973) 33142-36010
H41 (1973-1975) 33142-36011
h42 (1976-1980) 33142-36012
h42 (1980+ ) Unknown.

Luckily, As i mentioned earlier, you can probably just pick up an OEM h42 gasket kit and it will all work the same:

h42 complete Gasket Kit : 04331-60032

the h41 complete kit is NLA, but in case you need the number:
04331-60030


You can also get some aftermarket ones. A quick search resulted in the gasket kits being compatible for both h41/h42.

I will be covering inner bearing part number next, however, I am unsure if the info I have found is correct. What a headache.

 

[mrtodds77]

Note* I have yet to "rebuild" mine, this is just all the info i've been able to gather from staring at diagrams and comparing part numbers for a couple hours.*


Specter off-road only states that they recommend the replacement of the transmission's input shaft oil seal and a complete paper gasket set for these used H41s. Here is a comparison in notes between what they classify as a serviced transmission and a non-serviced (used) transmission.

*All bearings, shafts, and gears are inspected on both SERVICED/ NON SERVICED
*SERVICED transmissions are completely dismantled, cleaned, inspected, and reassembled.
*NON SERVICED are NOT dismantled, cleaned, and reassembled.
*NON SERVICED transmissions are recommended to have the oil seals and gaskets replaced.....That's it, and they even provide the part number for them.

The original Part number for the h41 input seal is: 90311-28003....But that number is NLA and superseded by the current and available 4-speed transmission part number as follows:

Input Oil Seal 90311-28004
View attachment 2596820


I'm just comparing pictures from specter off-road as well as the Toyota diagrams between h41/h42, but the paper gasket set for an H41 appear identical to that of an h42. As from what I've read, the transmission housings are identical; the only differences are some of the internals. Here are the the individual gasket numbers that are available:

Front transmission gasket (input side): 33132-36010

Side transmission cover gasket: 33162-37030

Top Plate Cover Gasket: Original Part number for h41 is said to be NLA 33122-36010.....However, if the h41/h42 cases are identical, then the H42 top-plate number is
33122-36011

Unfortunately, I was unable to locate the part number for the rear cover gasket. I searched year the range of years from h41 1969 - h42 1984.....They provide the part number however, toyota part dealers state that the gasket is NLA.

Here is the list of the rear gaskets (maybe you can score one off of ebay?) :

H41 (1969-1973) 33142-36010
H41 (1973-1975) 33142-36011
h42 (1976-1980) 33142-36012
h42 (1980+ ) Unknown.

Luckily, As i mentioned earlier, you can probably just pick up an OEM h42 gasket kit and it will all work the same:

h42 complete Gasket Kit : 04331-60032

the h41 complete kit is NLA, but in case you need the number:
04331-60030


You can also get some aftermarket ones. A quick search resulted in the gasket kits being compatible for both h41/h42.

I will be covering inner bearing part number next, however,

 

[mrtodds77]

Sorry for the post mishap. Ok think I found a bearing part number From Megazip.net for that elusive front bearing. The old 4 speed H41 transmission looks like it came from an FJ55 1969-1971. The input bearing part number is 90363-40012. It says it was superseded to 90363-40017. Curiously, the original part you can order but the superseded part is out of stock. You can order it from Japan. The price is 42.96 but it takes another $40 to ship it to the us. It takes 3-4 weeks to get it here? Also the rear bearing part number is 97153-06308. But some have said that you can use the same 97154-06308 rear output bearing from the normal 4 speed kits for that one.

I still am not sure what I am going to do. Rebuild it or try to run it as and do a fitness test in my 69 FJ40? All the gears looked good and everything was tight. I might replace the gaskets and seals and leave it at that.

 

[DesertFJ40]

@mrtodds77 okay, i think you hit the nail on the head....I was able to break down your post and sortta confirm through charts that the 97154-06308 bearing you found "should" work. What i've type up below is just what I was able to find and come to this conclusion.

Wow, you're right on that. The original diagrams I was looking at were for General Market fj40's and they did not provide a specific h41 10-spine bearing number. They only provide the number for a 10-spline 3-speed, even though it was under the tab for an h41, and led me to believe they were compatible as I had suggested in our private message. It could still be true, especially knowing how toyota carried a lot of their internal parts across multiple years and models of vehicles. The only way to determine for sure would be to measure the diameter of each bearing from a 3-speed, early h41, and h42 and determine if they are the same. Unfortunately, I haven't been able to find any documentation on this nor do I have a spare 3-speed or h42 to figure this out at the moment.

Interestingly enough, the 90363-40012 front bearing part number was also used early on, by Toyota, for their FQ-15 series; at least according to a Part Catalog from 1958.

Looking at the FJ-55 transmission diagrams, I come out with the same conclusion as you in regards to the part numbers. From what a chart I found here on IH8mud, as you already know, the "early h41s" 10-splines are listed only from 1969-1971. But in regards to part numbers, Toyota was using the same "internals" from a truck 11 years earlier.

Now for me to nit-pick everything about what the toyota diagrams show, but I think this might be the conclusion to our answer.

The first screenshot shows the bearing number for the fj55 1969-1971 model as determined earlier.

Now this second screenshot is for a 1973 fj55. But the Front input bearing is the same as that for the 1969-1971 exclusive transmission. I thought the final year was suppose to be 1971? At least according to what we've found so far.

Now look at the bottom part number. Its for a 4-speed transmission as well. Okay, lets say the early h41 ended in 09/1973 according to these diagrams. No more "10-spline input/output shaft." However, as far as I am aware of, all F,F2, and F3 land cruiser transmissions had a 10-spline input....the output, of course, varied by year. 3-speed, h41s, h42, and h55s all had the 10-spline input.

Here, you can see that the 1973-1975 input/output bearing numbers are identical for the 4-speed. So that means that the front diameter of the shaft, 10-spline, is the same as the rear (unknown spline count)? Or toyota decided to use the same bearing part number, for whatever reason. It's just weird that for all the other years, the input/output bearing part number are different. but this just leads me to believe that an h42 bearing will work with this h41 like you've read.

THANKFULLY, this part number is show to be available across toyota dealerships. It appears that WE CAN use part number for both 97154-06308 bearings.

Nice find

 

[mrtodds77]

I finally got a rebuild kit from SOR for this FJ55 4 speed transmission. But it had a couple of bearings that didn’t match. Two cage bearings which are 40mm ID x 44.6mm OD x 17 mm length. I think I found an NSK part number for these FWF 404513. Does anyone know where I can get these? Also I need 17 individual roller bearings 5.5mm Diameter x 19mm length. Does anyone know where I can find or order those?

 

[DesertFJ40]

I finally got a rebuild kit from SOR for this FJ55 4 speed transmission. But it had a couple of bearings that didn’t match. Two cage bearings which are 40mm ID x 44.6mm OD x 17 mm length. I think I found an NSK part number for these FWF 404513. Does anyone know where I can get these? Also I need 17 individual roller bearings 5.5mm Diameter x 19mm length. Does anyone know where I can find or order those?

Are the roller bearings the individual pill looking ones like this? Part number 90361-06010 NLA (Image source Ih8mud) :

I typed the OEM part number and it took me to an Australian website called 4x4-World. It shows that you can order them $1.20 each individual one. The sole image on the website show that it measure just under 20mm....so it should be the 19mm you were in search of? However, I created an accounted and added them to my cart; there doesn't seem to be a "check-out" button...Strange....Here is the link hopefully the check out button shows up for you:

4x4 World

Im not sure which caged bearing were the ones you were searching for.... But I looked up a part number and they come up as "caged roller bearings" , and they also appeared in that 4x4 World website. It was the OEM part Number 90364-40016:

It might look something like this, but the website did not provide an exact picture for that part number

4x4 World "rollers"

Hopefully this means we can do an almost complete rebuild of these h41. I would think the parts are widely available outside of the US as the H41 was the standard transmission in the 40-series. If we are unable to order through 4x4 world, perhaps a member from Australia could get them for us and ship them over To the U.S.? I would gladly jump on a joined order for these parts.