Hello all,
I am in a bit of a dilemma. I was having front and rear e-lockers installed and decided to overhaul everything on the axles at the same time. Its a 2002 HZJ78L with open diffs. Turns out the previous owner has changed the ring gear and pinion on the rear diff. Thankfully its still a 4.3 like the front, but I found out because the new rear oil seal and the new drive pinion flange 41204-35100 doesn't fit. The flange that's supposed to be there has an external diameter of 41 mm and 29 teeth, which would mate to the correct oil seal and pinion shaft respectively. The worn flange that has been used is 38mm diameter and has 27 teeth. Thus the pinion shaft between the flange and ring gear has a smaller diameter than factory, now 28mm (615.752 mm2) instead of 30mm (706.858 mm2). Thats a 13% reduction in shaft thickness, which is what worries me. If there is a Hilux 43:10 final diff gear I'd bet money thats what they fitted at the mine.
So my issue is whether I can I trust this smaller pinion shaft, considering I have a turboed 1HZ-T and GVM of 3.6 t. I don't really know how often they tend to fail or how over-engineered they are in general.
There's also another possible issue of whether I can actually get an oil seal to fit the casing with the smaller diameter, that seal was never good since I had it, but not knowing the age I just thought it was spent, I'm now thinking it is related.
Any ideas on where these invasive parts might have come from and how risky it will be to stick with them will be very welcome.
Cheers
I am in a bit of a dilemma. I was having front and rear e-lockers installed and decided to overhaul everything on the axles at the same time. Its a 2002 HZJ78L with open diffs. Turns out the previous owner has changed the ring gear and pinion on the rear diff. Thankfully its still a 4.3 like the front, but I found out because the new rear oil seal and the new drive pinion flange 41204-35100 doesn't fit. The flange that's supposed to be there has an external diameter of 41 mm and 29 teeth, which would mate to the correct oil seal and pinion shaft respectively. The worn flange that has been used is 38mm diameter and has 27 teeth. Thus the pinion shaft between the flange and ring gear has a smaller diameter than factory, now 28mm (615.752 mm2) instead of 30mm (706.858 mm2). Thats a 13% reduction in shaft thickness, which is what worries me. If there is a Hilux 43:10 final diff gear I'd bet money thats what they fitted at the mine.
So my issue is whether I can I trust this smaller pinion shaft, considering I have a turboed 1HZ-T and GVM of 3.6 t. I don't really know how often they tend to fail or how over-engineered they are in general.
There's also another possible issue of whether I can actually get an oil seal to fit the casing with the smaller diameter, that seal was never good since I had it, but not knowing the age I just thought it was spent, I'm now thinking it is related.
Any ideas on where these invasive parts might have come from and how risky it will be to stick with them will be very welcome.
Cheers
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