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I tensioned the belt then unwound it counting the number of turns, put some silicon RTV over the now exposed threads and then slid the washer onto the stuff and re-tightened. Checked the tension again and left it at that.
When i did my first timing belt job about 4 years ago I pulled the tensioner apart just to check everything. As I studied the tensioning bolt I was left wondering how the bolt was sealing oil. Upon examination it seemed the bolt had some of that self setting locking stuff that goes off when disturbed suggesting it was a single use item which seemed a bit odd considering they have to be further tightened after a 1000 miles or so of settling in. I was not over impressed by this so found an appropriately sized washer to place between the lock nut and the body- as I recall the stock bolt does not have a washer but figured it might help the RTV seal things up. Checked it a couple of times for any signs of leakage but saw nothing. I also filled the tensioner with STP- a PITA to get that stuff into the thing- hopefully it will go nowhere!
Whether or not the above is a good approach remains to be seen but it happens to be what I did .one of these days I will try to check if the STP is still in there albeit I am not so sure how to prove that- probably with a hypodermic syringe to draw some out.
Ok. But the nut will hold any sealant in just as must as any washer.
Yes. Originally I. See traces of blue locktite on the bolts.
The rationale was that there is a small annulus between the washer and the bolt for the RTV to sit in and thus go off. I reasoned that with just the nut the RTV would be extruded leaving virtually nothing to seal with.
I didnt use anything on the bolt in 2 belt jobs, and have never seen anything leak out there. I have suffered some ejection of oil out the boot on shutdown and heat soak which drove me mad for a bit.
jp 83 Euro S AT 57k
I didnt use anything on the bolt in 2 belt jobs, and have never seen anything leak out there. I have suffered some ejection of oil out the boot on shutdown and heat soak which drove me mad for a bit.
jp 83 Euro S AT 57k
That must be magic. Gravity will eventually drive the oil out through the threads of the bolt.
Take care to fully entomb the complete unit... it's the only way to be sure
The original belt tensioner is over-engineered, but it’s very good. All respect to the effort you have put into re-inventing the 928-wheel, but it is simply not needed.
for the tensioner gasket I use either Hondabond gray sealant or Dreibond.
Then fill the tensioner with STP or Lucas oil treatment,
these are thicker oils so they take longer to drain out
for the bolts I use Loctite PTFE non setting pipe sealant.
The same sealant i use on the water pump bolts to keep water from corroding the threads of the bolts
for the tensioner gasket I use either Hondabond gray sealant or Dreibond.
Then fill the tensioner with STP or Lucas oil treatment,
these are thicker oils so they take longer to drain out
for the bolts I use Loctite PTFE non setting pipe sealant.
The same sealant i use on the water pump bolts to keep water from corroding the threads of the bolts
Loctite 567 PTFE
I use the Swepco 80w oil. Have a container since my aircooled days.
03-14-2020, 12:30 PM
Sealant on tensioner bolt.
