Steering gear box rebuild (2 Viewers)

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The upper (smaller) Teflon rings in the regular kit will not work, the are slightly too big, unless something has changed. Order them directly from Toyota, if you must, but they are pricey too.
I have never replaced the upper rings and have had no issues with the 1/2 dozen or so I've rebuilt.
half a dozen PS box rebuild - dude, is this becoming a habit? You doing this for funzies? :rofl:
 
Hey mate,

juzt about to do mine and had a look at all the available kits at Rockauto.
However, none of the images show the four teflon rings that sit on the input shaft.
Do you remember which kit you bought?

Also later in this thread someone mentions that a "kit from Rockauto" didn't contain them.

PS: Thanks everyone for this greatly detailed thread. Splendid work :)
No kit contains those o-rings.
Must buy the valve to get them new.

edit: Valve - 44120-60180
 
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No kit contains those o-rings.
Must buy the valve to get them new.
Might be able to purchase them individually? Not in the market, so haven't investigated the parts diagrams.
 
edit: No, not available individually.
I think one person on MUD could measure them accurately and got with an industrial seal place and ordered based strictly on size. Even then the result was not promising, iirc.
 
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Some way back in this thread @NeverGiveUpYota had a diagram of a 60 series steering gearbox (Post #128).
After some searching I came up with 9056248001. However, does anybody know if the input shafts are the same size between 60 and 80 series Cruisers?

Edit:
Input Shaft Bearing (NSK 19BSW05A, Size 19x35x7): 9036319002 & 9036319007
Input Shaft Seal (Size 19x35x7): 9031119006
 
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Hey guys,
What causes slop in the steering box? I’ve currently got my adjustment screen wound in as far as it’s safe to go without binding.

i ask this question as I’ve currently got a spare box with a snapped sector shaft but I don’t want to swap the sector shaft into the fresh box if I’m just moving the issue…

any help would be great
 
Anyone have pics of a box that’s been ported for use with a hydraulic assist set up ? I’m about to rebuild my box and install a 105 sector shaft too.
 
Hi Folks,
I have read every post in this thread about the 80 steering box rebuild. I bought the toyota rebuild kit 04445-60050, cleaned everything and removed the old O rings. SOoooo I also removed (cut actually) the 4 teflon rings from the input worm shaft (picture from 95r50 below). This was before I discovered they were not part of the Toyota Kit and not available from Toyota.

Has anyone come up with a solution for the 4 teflon rings. These 4 teflon seals are NOT part of the aftermarket Gates or Edelmann rebuild kits. Maybe at one point they were part of the aftermarket kits. However, from today they 4 seals are not part of any rebuild kit.

Worm input shaft.jpg
 
Hi Folks,
I have read every post in this thread about the 80 steering box rebuild. I bought the toyota rebuild kit 04445-60050, cleaned everything and removed the old O rings. SOoooo I also removed (cut actually) the 4 teflon rings from the input worm shaft (picture from 95r50 below). This was before I discovered they were not part of the Toyota Kit and not available from Toyota.

Has anyone come up with a solution for the 4 teflon rings. These 4 teflon seals are NOT part of the aftermarket Gates or Edelmann rebuild kits. Maybe at one point they were part of the aftermarket kits. However, from today they 4 seals are not part of any rebuild kit.

View attachment 2827277
My best bet so far is 90560-33003 or 90562-33008.
They are the same size as the original and should fit from what I can see. However, the material is different.
90560-33003 has a smooth finish and 90562-33008 seems rather rough.
Both are black, but that shouldn't matter as long as they seal properly.

So far I have put one ring (90560-33003) on after heating it up.
However, I have yet to put a piston compressor on it again as it has expanded too much.
So for now I cannot really confirm anything and it will take a few more weeks for me to get back to it as I'm just too busy, sorry :(

As soon as I can really confirm something, I will keep everyone posted.

Cheers,
Mark
 
However, from today they 4 seals are not part of any rebuild kit.
No, they are not in any kit.
Besides, if you're steering is sloppy on-center, the 'reseal' kit will not fix it.
But this will: 44120-60180 - Valve Assy, W/Ball Nut
This part replaces the worm gear, power piston, balls, and all associated o-rings (including the ones you are missing now).
 
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My best bet so far is 90560-33003 or 90562-33008.
They are the same size as the original and should fit from what I can see. However, the material is different.
90560-33003 has a smooth finish and 90562-33008 seems rather rough.
Both are black, but that shouldn't matter as long as they seal properly.

So far I have put one ring (90560-33003) on after heating it up.
However, I have yet to put a piston compressor on it again as it has expanded too much.
So for now I cannot really confirm anything and it will take a few more weeks for me to get back to it as I'm just too busy, sorry :(

As soon as I can really confirm something, I will keep everyone posted.

Cheers,
Mark
Thanks Mark!
I had to buy a rebuilt steering box from Rockauto, while I find the correct seals for the original. I find this very frustrating. I've come to find, these 4 seals are normally left alone. Not sure why a factory rebuild kit would not contain every seal needed in the Steering Assy. I ordered a Major rebuild kit from DriveTech in Australia. From their picture, it looks like the 4 seals are there.

As for the material. I am interested to see if the material compresses like the Teflon seals would (black Teflon?)
Eric
 
Thanks Mark!
I had to buy a rebuilt steering box from Rockauto, while I find the correct seals for the original. I find this very frustrating. I've come to find, these 4 seals are normally left alone. Not sure why a factory rebuild kit would not contain every seal needed in the Steering Assy. I ordered a Major rebuild kit from DriveTech in Australia. From their picture, it looks like the 4 seals are there.

As for the material. I am interested to see if the material compresses like the Teflon seals would (black Teflon?)
Eric
 
Just FYI.
I found the large roller bearing inside the steering box adjuster cap from this company. I've used this site many times. 48-72 hour delivery is standard for items in stock.

Bearing.JPG
 
Just FYI.
I found the large roller bearing inside the steering box adjuster cap from this company. I've used this site many times. 48-72 hour delivery is standard for items in stock.

View attachment 2827868


Thank you for updating this thread with pertinent data as it'll help me and others I'm sure.
Cheers.
 
My best bet so far is 90560-33003 or 90562-33008.
They are the same size as the original and should fit from what I can see. However, the material is different.
90560-33003 has a smooth finish and 90562-33008 seems rather rough.
Both are black, but that shouldn't matter as long as they seal properly.

So far I have put one ring (90560-33003) on after heating it up.
However, I have yet to put a piston compressor on it again as it has expanded too much.
So for now I cannot really confirm anything and it will take a few more weeks for me to get back to it as I'm just too busy, sorry :(

As soon as I can really confirm something, I will keep everyone posted.

Cheers,
Mark
I also purchased these seals (90560-33003 or 90562-33008). 4 each. They fit, They work. The stars aligned.... I am jazzed there is a solution using a toyota part. In parallel, I kind of went seal buying crazy. I also purchased a Land cruiser 70 series "Superior Kit" rebuild kit from Power Steering Box Seal Kit suitable for Landcruiser 75 78 79 Series 1990-07 - https://www.allfourx4.com.au/epages/shop.sf/en_AU/?ObjectPath=/Shops/allfourx4/Products/04445-60070 in Austriala, PN GSB-65426. This kit also had the worm shaft seals in the correct size. With the exception of the piston O-Ring and teflon ring (smaller). The remaining seals match the FZJ80 steering box rebuild kit.
 
Hey guys,
What causes slop in the steering box? I’ve currently got my adjustment screen wound in as far as it’s safe to go without binding.

i ask this question as I’ve currently got a spare box with a snapped sector shaft but I don’t want to swap the sector shaft into the fresh box if I’m just moving the issue…

any help would be great
44120-60180 - VALVE ASSY, W/BALL NUT
 
I also purchased these seals (90560-33003 or 90562-33008). 4 each. They fit, They work. The stars aligned.... I am jazzed there is a solution using a toyota part. In parallel, I kind of went seal buying crazy. I also purchased a Land cruiser 70 series "Superior Kit" rebuild kit from Power Steering Box Seal Kit suitable for Landcruiser 75 78 79 Series 1990-07 - https://www.allfourx4.com.au/epages/shop.sf/en_AU/?ObjectPath=/Shops/allfourx4/Products/04445-60070 in Austriala, PN GSB-65426. This kit also had the worm shaft seals in the correct size. With the exception of the piston O-Ring and teflon ring (smaller). The remaining seals match the FZJ80 steering box rebuild kit.
Great to hear, mate :)
Took me quite a while to find these numbers and I also bought them on a whiff only.
Which ones did you end up using? As mentioned earlier the 90562-33008 feel rather rough compared to 90560-33003.
I am going with 90560-33003 as soon as time allows... So far I have only put one on to check the size.
 
Going with the smooth. One set is black while the other is Tan. I don't remember which part number.
In my case the tan seal is the the smooth one.
Thanks for all the hard work, I was searching the Toyota parts explode diagrams when I found your post. Again, thanks for the effort to find a Toyota part number. I am 100% confident the part numbers you identified will work. These seals are the same size as the original.
The large roller bearing in the cap arrives tomorrow. Then its all going back together...
Thanks Again.
 
Great work on digging up all these obscure and unobtainable parts. This is what makes Mud special and this is what makes this group special. Hats off to everyone involved in bettering each other! It's great to see...these days especially.
 
Great to hear that I have been able to finally give back something to this incredible community.
It has given me so much over the years and saved me countless bucks :)

However, again a question, haha :D
Does anyone know a part number for the Teflon seal within the detachable outer valve body?
Its ouside diameter is ~21mm / .83"

1636929357440.png


I have tried to search for these, but couldn't get a match:
90560-19001 to 90560-19009
90560-18001 to 90560-18009
90560-17001 to 90560-17009
Same for the 90562-XXXXX range.
(21mm outside diameter - 1.5mm thickness = 18mm inside diameter, so following other sizing schemes XXXXX-18XXXX might be correct.
This is how I found the other ones.)

Also no other part diagrams I have checked show this as serviceable on any other model.

As this seal is a relatively static one (only a slight amount of twist here) and because I have seen images of very similar worm gears / valve assemblies that do not have a seal ring here at all, I think I MIGHT be able to substitute a normal o-ring.
However, I have not yet removed the original Teflon ring to measure groove depth and calculate a fitting o-ring.
If no one comes up with a fitting part number, I will let you know what I eventually did here.

The only two questions are if an NBR o-ring will have a long lifetime here as firstly the groove isn't properly cut for an o-ring and secondly the pressure might extrude and destroy an NBR o-ring here.
There must be a reason they used Teflon here.
I'm guessing to limit friction when turning the stweeing wheel?
Not sure how much NBR would affect this.

Simply looking at pressure, the power steering pump itself utilizes NBR o-rings, so there shouldn't be any difference in pressure here.
Does anyone know the maximum pressure of the power steering system on an 80 series in general?

Cheers,
Mark
 
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