Well i have another victim to add to the list here.
I was doing reg main
on my friends 05 silverado with 50k of non aggressive riding miles on it and when i checked the drive pulley nut as a reg maint item i found the nut extremely loose just hanging on a few threads ready to fall off!
And we just got back from a 300 mile road trip from going to the Americade in Lake George NY where we were crusing 70-75mph on RT87 where drive pulley had decided to come off at the very least we would have had problem to deal with on the side of road to worst case if belt got tied up on in rear wheel and locked it up at 70-75mph or if not that the pulley chewing the shaft up on the x-fer case resulting in an $800+ repair at the shop which thankfully for him neither of which happened.
He is the 2nd owner and about it 6-7 yrs ago with low miles from the original owner and my friend added cobra long shots and K&N air filter in stock air cleaner housing.
And of course when i went ti
the local Yami
dealer which is a big dealership thats been in my area since mid-late 70's and you guess it,they didnt have a new retaining washer and nut in stock and parts will be in early next wk .
Point is for my R* and anyone else's R* i work on i make checking the retaining nut on the drive pulley a 1x yrly chk at a min and if someone either has an agressive riding style with esp with perf mods and or puts a lot of miles on that the case i would chk the pulley nut 2x yrly.
When i reinstall the pulley nut i will not only use a new retaining washer that you bend the sides up on but i will also use loctite on it too.
,i have a spare pulley nut & washer for my 06 Silverado which i tried on my friends 05 silverado and they are not only a diff thread type but the stock nut on my 06 is 30mm and nut on his 05 R* silverado is considerable larger @ 36mm no to mention the locking washer between the nut pulley are totally diff design too.
The 05 is made of then metal with teeh on the id
that grip the output shaft of x-fer box and on my 06 uses a thicker then normal metal washer between nut & pulley and theres a raise thinner collar on the retianing nut you STAKE into a grove in the x-fer case shaft to lock it.
When i went from stock 32t to 31t drive pulley on my 06 silverado i used some loctite on the pulley nut for an additional safety factor.