i had to swap the input shaft on my 100 series h151f with a 1fz inputshaft as it came setup for a 2uz. 5th gear looks identical to yours with no threaded holes. i used a simple 3 jaw outside gear puller from harbor freight. the transmission was brand new and did not require a lot of power to pull the gear off, no heat either. I have pulled several toyota manual transmissions apart and compared to anything else i have worked on i found they required less force to pull gears off shafts.
Thanks Audi2nr, That is helpful...
However I'm sure if toyota have changed the design (I am struggling to find an exploded diagram of the H152 gearbox) but I tried a similar approach and couldn't get the gear of at all. (Like I was putting such a large amount of force the gear puller thread started to bind up.
I am wondering if they have put another snap ring in between the large main gear and the hub?
Anyway, I made 2 different custom tools to try just pulling on the hub instead, no luck. I was bending 25x25x3mm box steel and the gear still wouldn't let go.
Tried a 3rd modified tool (by grinding down a gear puller to fit into the small gap near the hub "keys" or whatever you call them, ended up breaking the gear (which I still can't get off).
So now I need to find a way to remove the gear without damaging the main shaft, then buy a replacement set of parts (which I can't seem to find part numbers for).
So far I've spent probably 15 hours in total trying to get this bloody gear off with no luck. Getting very annoyed and depressed, as I'm slowly damaging a brand new H152 gearbox.
No idea what you are doing. Are you upgrading 5th in an H151?
Cheers
I am trying to fit a brand new input shaft (to suit an 80 series) into a brand new H152. In order to do that I have to remove that rear hub so I can remove the retaining cage that holds the bearings so I can drop down the counter shaft to allow me to pull the input shaft off.
What should have been a 4-5 hour job has now taken 3 days, ruined a couple of different tools and ruined the actual hub i still haven't been able to get off. So its not going well...
I just dont understand why this is so stuck on? Its a brand new 2022 gearbox.... Hasn't been used yet. And I can't see anything else holding it on (I've obviously removed the retaining clip).
I've also done this 5 or 6 times now on earlier H151/H152 gearboxes, but this is the first time I've encountered one without the holes drilled and with that hub so stuck on.