Stripped oil filter bolt hole
 

Here's my problem: The ham fisted individual who owned the '90 XT before me decided it would be a great idea to tighten the bolts for the oil filter so tight he stripped the one in the 10 oclock position. I've owned it for about 3 weeks now and decided to change the oil today and discovered the bolt extremely loose. That would explain the ever so slight coating of oil on the left crankcase. Upon attempting to retighten it I found nary a thread to tighten it into. Any Suggestions out there in ultra smart XT land? How far are the threads into the case, can I just get the next longer bolt and get to the threads that aren't boogered up, ETC......... Any help will be a appreciated......

Strip thread
 

There was a thread or two few weeks ago. Some very nice solutions. Do a search. Cheers.

Two
 

Solutions:
1. Helicoil the damaged thread
2. Helicoil + install a thread end, so that you do not tighten the cover with the bolts but with a nut

Both involve removing the clutch cover.
Inserting a longer bolt is NOT a good idea; if you damage the inner engine casings you will be looking at major surgery to get your bike on the road again.

You say a slight film of oil on the LH side; assume that is looking from front to back? :-)

Auke

two good sugestions from aukboss, there should also be enough meat in the casing to drill out the hole and tap it out to 8mm, a much cheaper option if you dont have a helicoil kit already.
personally i would go with the helicoil and locktite a stud in there, then you will only ever disturb the nut and not the thread in the casing.

As the guys say, a helicoil is the way to go - it's an easy and very quick job.

Thanks for the ideas guys! You are the cat's meow! Sorry about the left side statement I I meand there was a film "Left" on the crankcase. I have no helicoil stuff available so I pulled the cover and found there was some threads left down there past the stripped ones. Will be heading to the store to find some studs to loctite into there. THanks, again, for the sugestions

Good reading
 

Here's another thread for the same issue (and there may be more) - worth a read before you go firm on your plan?


http://www.horizonsunlimited.com/hub...l-filter-22255


Cheers,

Dave

I think it is better to use a timesert better then a helicoil.
It would also be an idea to check the other 2 threads and get the fixed at the same time if needed.

Time Sert is definitely to prefer over Helicoil for one major advantage: Time Serts (properly fitted) can't dislodge and unscrew themselves. Helicoils sometimes do and the result might be a case for the well equipped enginering shop (TIGweld & mill) or Yamaha parts salesman.

Helicoil sets are dirt cheap. If you can't afford them then go to a workshop instead of messing with your bike using inappropriate tools.

Time Serts unfortunately require VERY expensive tools which makes them a No-NO for hobby mechanics and even small workshops. Find someone who fits them for you. I'll do it for you if you come to Cape Town :D

You can get an extra long Helicoil fitting tool kit for suitable for retapping the XT oil filter bolts threads without taking the clutch cover off.

Mine too
 

2 of my oil filter cover bolts were stripped when I bought my bike.
Take the right side case cover off, it only takes about 45 mins. (you'll need a new gasket) and helicoil all 3 of them. If they aren't strpped yet they will be soon enough, just do all 3 now. You can get longer helicoils if your concerned you won't get enough purchase.
All up it's about a 2 hour job in the garage or about an hour in a real workshop.