Upon disassembling my transmissions, I have come across an oddity. The nuts that hold the differential cover on all have little helicoils in them. Why?
Multiple transmissions have this, so it wasn't just some guy who had a pile of metric helicoils but couldn't find any metric nuts
yep...the 6mm nuts on the back of the /4 oil pump have the same thing....no clue why they did it. If the heli-coils are stainless they would be harder, but why not just make the whole nut harder.
I thought of a semi-plausible reason! The studs need to hold well, but are in magnesium... if they are cast into the case instead of threaded, with some sort of square head under the surface, you would NOT want to turn the stud. The helicoiled nuts would give another place for the nut to break loose without turning the stud, if the nut ever got stuck.
Powered by Invision Power Board (http://www.invisionboard.com)
© Invision Power Services (http://www.invisionpower.com)