The hike opens up into the timing chain cavity. There would be a worry about getting metal chips falling down into the engine.
Sent from my iPhone > On Oct 25, 2020, at 9:35 PM, G Mann via Mercedes <mercedes@okiebenz.com> > wrote: > > You have the threaded bolt that fits the hole. Use it to determine the > thread count and pitch.. Perfect match. > > That should be a blind bottom hole. Use the Helicoil taps that will come > with the kit for that hole size and thread match. > Use wheel bearing grease to fill the lands of the tap. that will capture > most of the material removed... When re tapping the hole, back the tap out > and clean the grease out with the thread shavings. Carb cleaner spray > works, tap held in a cardboard box and safety glasses.. Spray down the tap > hole with carb cleaner to carry the chips out, hit it with a shop vac for a > bit, recoat the tap with grease and gently continue threading to match the > heilcoil thread insert.. Repeat as necessary to gently make a new set of > threads for the insert. > Carefully install insert threads with the kit tool... PER INSTRUCTIONS > break off the bottom tang of the insert [this is what screws the new insert > into position... > If you followed the kit instructions, you then have NEW threads, and the > pulley bolt will torque to spec and bottom to the location flange built > into the bolt. > > Good luck. > >> On Sun, Oct 25, 2020 at 2:04 PM Kaleb Striplin via Mercedes < >> mercedes@okiebenz.com> wrote: >> >> Any idea what size helicoil it would be? >> >>> On 10/25/2020 4:01 PM, G Mann via Mercedes wrote: >>> Time for a Helicoil thread repair kit. >>> That mounting is a high stress area, with a repeated high failure rate.. >> It >>> needs full thread contact and regular inspection of the bolt for working >>> loose. >>> >>> Spend the money and time to repair the thread, It should last for a good >>> while... Don't repair it, just kluge it with JB or something, and when it >>> lets go and the pulley/ belt/ fan eats whatever is handy at highway >>> speed... you get to buy lots of new parts and labor... >>> >>> Your call... Helicoil repair kit would be mine.. >>> >>> On Sun, Oct 25, 2020 at 1:52 PM Kaleb Striplin via Mercedes < >>> mercedes@okiebenz.com> wrote: >>> >>>> Working on my fathers 98 e300 doing routine maintenance. Noticed the >> belt >>>> tensioner was cockeyed. Typical. On this car the tensioner was loose >> with >>>> the PO and he I believe used some lock tight and tightened it back down. >>>> The threads were somewhat stripped out. I was aware at some point it >> could >>>> become an issue. When I removed the bolt it was tight, not loose so I’m >>>> sure the tensioner is just worn out. When I go to replace it I don’t >> think >>>> I’m going to be able to crank down on it like normal. It appears the >> first >>>> half of the threads are stripped so it’s just grabbing with the back >> half. >>>> Think I should clean it up real good and used either red or blue >> locktite? >>>> What about JB welding it? What about running a tap down the hole to >> clean >>>> it up? Anybody know what size it would be or if that would even work? >> See >>>> photos and video below. >>>> >>>> https://youtu.be/cWiG0ihny0M >>>> >>>> >>>> >>>> Sent from my iPhone >>>> _______________________________________ >>>> http://www.okiebenz.com >>>> >>>> To search list archives http://www.okiebenz.com/archive/ >>>> >>>> To Unsubscribe or change delivery options go to: >>>> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >>>> >>>> >>> _______________________________________ >>> http://www.okiebenz.com >>> >>> To search list archives http://www.okiebenz.com/archive/ >>> >>> To Unsubscribe or change delivery options go to: >>> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >>> >> >> _______________________________________ >> http://www.okiebenz.com >> >> To search list archives http://www.okiebenz.com/archive/ >> >> To Unsubscribe or change delivery options go to: >> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >> >> > _______________________________________ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
