specifications for LSD rebuild

[H7ERO]

finally everything was put back together with the number 6 adjusting plates new clutch plates and spline plates new springs

southern axles in watford set the preload and backlash for 50euros but im sure you could get this pretty accurate at home possibly needing a dial guage

preload is the load applied on the conical bearings either side of the diff (where the half shafts go in) adjusted by winding in the adjusters and seting them in place using the lock clips

backlash is also set using these adjusters to locate the diff slightly to the left or right so the tolerance between the crown gear and pinnion gear is just right

because both adjustments are done with the same adjusters it can take a little time to get right

preload can be set with a dial guage like a torque wrench but much finer for measuring much smaller values of torque

and the backlash by feel(just so there is very slight play between the two gears like 0.5mm or a piece high quality paper thickness (run this between the two gears and set them then remove it should leave a slight tolerance)
or to get an idea ask in a modle shop about setting a backlash between the pinion and spur gear on a radio control car they will demonstrate!

if there is no backlash there will be great friction between the two gears and a grinding sound when the assembly turns

i was not entirley happy with the work as my diff now makes a whirring sound ( the chap said it would because the hard coating on my crown gear had worn out- it didnt whir befor! and miracuosly he had a whole replacement housing in stock for 200 euros! to my suprise!)

oh well it prob is worn out and maybe he set it so to help it on its way but thats what you get for leting someone else do the work! i didnt really care as my grandad just died had exams at uni then one of my best friends commited suicide!

however it is fucking awsome to drive now!

the rear is precisly contolable using the throttle as the diff action is instantaneous (not waiting for it to act like befor!)
power through and out of corners is superb you can just put your foot down and rocket out of the bend
and the switch to oversteer just requires a slighlty heavy foot
drift control is so much more precise and smooth

i would regard this in my top five upgrades for the corolla!