T50 G/box tightening torque question.

[misterforager]

I have found the info in the official Toyota 'Repair Manual for Chassis & Body' (Corolla FR Sprinter) slightly confusing. The publication ref is 36217E. Page M-22 describes refitting of the gearbox. It states that the top two bolts are torqued to 53 lbs-ft. That's fine 'cos they are marked with two 'protruding lines' (with washer) and are thus 6T/M12, which matches with the 'standard' torque range settings on page B-2. However, it goes on (in section M-22 part 3.) to state that the rest of the bolts (including the supplementary braces) are set to 27 lbs-ft. I don't get this; the right and left bolts (holding the T50 to the 4AGE block directly) are similarly marked as per the top two. Surely they should also be 53 lbs-ft? Can anyone confirm what I say. Apologies fo being so fussy but I am an Aerospace Engineer and suffer from doing things accurately - and I don't want bolts to work loose if I can help it....

Thanks in advance.

[apardal]

Bolts that tighten to the block you can tighten them almost as much as you can. The ones that bolt to the bellhousing tighten them little before they damage the thread, lol...

I've removed and reassembled my gearbox lots of times and never gave too much thought to those 8(?) bolts.

Good luck finding the right answer though! If you don't, just forget you're an aerospace engineer!