OEM ring gear and pinion 41201-69166 -> 41201-80527 ?

[Reinhardtius]

They are part of the final gear kit.

Thanks, I am going to create a parts list. What may be helpful (if I can ask you) is to have a complete list of parts that you used to install this final gear kit. These parts are what were required for your 60 series, but I assume (and will test in due course) that they would be the same for a 70 series owner who must replace the R and P with this factory superseeded final gear kit.

Could you list out the parts you purchased? I'll then make a table of the factory parts, the replacement part, and some notes. This is a great thread, by the way. Thank you!

 

[Eurasiaoverland]

Thanks, I am going to create a parts list. What may be helpful (if I can ask you) is to have a complete list of parts that you used to install this final gear kit. These parts are what were required for your 60 series, but I assume (and will test in due course) that they would be the same for a 70 series owner who must replace the R and P with this factory superseeded final gear kit.

Could you list out the parts you purchased? I'll then make a table of the factory parts, the replacement part, and some notes. This is a great thread, by the way. Thank you!

I could read through this thread again and make a list of the parts, but you can just as easily do that. Detailed here is the final drive kit, pinion bearings and the flange and seal you need to use to run them on the original housing. You'll also need to look up the part numbers for your diff carrier bearings (if you want to replace them). If you have a pre-1990 70 series, your differentials will be identical to post 1984 60 series differentials.

 

[Vitek]

For anybody that after some search for the ring gear set part number ended up here:
Our hzj75 needs to have the the rear ring gear set replaced as its broken (original pn.: 41201-69355)
I also ended up ordering the 41201-80527 and luckily for me it came with the seal and crush tube included.
However, the bearing issue was the same and also the flange has to be replaced. I ordered the ones Eurasiaoverland posted earlier, hope those will also work in the hzj75 1997 carrier. Will update, but just wanted to clarify for anybody going throught this with a 75 series, that situation and hopefully the resolution will be the same.

 

[Eurasiaoverland]

For anybody that after some search for the ring gear set part number ended up here:
Our hzj75 needs to have the the rear ring gear set replaced as its broken (original pn.: 41201-69355)
I also ended up ordering the 41201-80527 and luckily for me it came with the seal and crush tube included.
However, the bearing issue was the same and also the flange has to be replaced. I ordered the ones Eurasiaoverland posted earlier, hope those will also work in the hzj75 1997 carrier. Will update, but just wanted to clarify for anybody going throught this with a 75 series, that situation and hopefully the resolution will be the same.

No luck involved, those accessories are part of the kit you bought. However, unless you find a 100 series flange, you'll need to buy another oil seal to suit.

 

[sodafeld1]

That is really interesting, so toyota has gone to the 33mm pinion.
I have been swearing and cursing at an aftermarket ring and pinion for my hj75. It too had the pinion shaft size made to 33mm, with different bearings and flange. My biggest bummer was I wanted a solid spacer so aftermarket from one company would not fit the wider pinion.
I was told the later vdj had a 33mm pinion, so went for a vdj solid spacer but it is a sloppy fit. A local diff specialist said a little play in spacer is ok, but I am a little wary.

Look forward to seeing your ring gear patterns please.
Good to know that someone else is encountering a 33mm pinion. You are not interested in a solid spacer?

Personally I got some extra bearings and made some slip bearings. The bigger bearings changes pinion depth a fair bit, so I have been fiddling and pulling apart and trying different pinion shims and looking like it is either the thickest shim toyota supplies or may have to get some extra .05mm , .1mm, .2mm shims made up..to compensate for the thicker, deeper bearings.

As soon as you replace something on a diff it gets expensive for sure! Have been told terrain tamer make their kits complete and true to oem size. Drivetech do not supply a solid spacer.

 

[Eurasiaoverland]

That is really interesting, so toyota has gone to the 33mm pinion.
I have been swearing and cursing at an aftermarket ring and pinion for my hj75. It too had the pinion shaft size made to 33mm, with different bearings and flange. My biggest bummer was I wanted a solid spacer so aftermarket from one company would not fit the wider pinion.
I was told the later vdj had a 33mm pinion, so went for a vdj solid spacer but it is a sloppy fit. A local diff specialist said a little play in spacer is ok, but I am a little wary.

Look forward to seeing your ring gear patterns please.
Good to know that someone else is encountering a 33mm pinion. You are not interested in a solid spacer?

Personally I got some extra bearings and made some slip bearings. The bigger bearings changes pinion depth a fair bit, so I have been fiddling and pulling apart and trying different pinion shims and looking like it is either the thickest shim toyota supplies or may have to get some extra .05mm , .1mm, .2mm shims made up..to compensate for the thicker, deeper bearings.

As soon as you replace something on a diff it gets expensive for sure! Have been told terrain tamer make their kits complete and true to oem size. Drivetech do not supply a solid spacer.

I'm of the 'OEM is right' school (hence chasing Genuine parts and keeping the original final drive ratio) so didn't want to go down the aftermarket solid spacer rule, even though it seems a superior setup.

No progress on my rear diff build as the LSD carrier is still in Russia...

I think the TT kit is a Joint Fuji item. On the 60 Series Aus FB group someone who knows their stuff reported the TT (I think) 37:9 aftermarket diff was not great quality (he could not get a good pattern) and soft metal. I even spoke to a gentleman at Joint Fuji in Japan who told me, in a roundabout way, that their 37:9 R&P were not 'original quality'. You can spot the JF pinion as the splined section has a strange waisted profile (no idea why) which must make it weaker.

Hence I persevered with the 33 mm / 32 spline newer OEM pinion with all the additional paraphernalia.