Fixing a crack with a drill?

Question

i have a chevy blazer 1986 s-10 with a 2.6L motor with a automatic tranny, i had some work done where the mechanic had to patch a couple spots on the tranny to fix a couple leaks, today my tranny was leaking coolent from a hole that looked like someone drilled it...when someone patches a hole in a tranny, do they drill out the crack and patch it over that so the crack will not continue to get bigger and it would give the patch a stronger grip, so what i think is the patch just came off, is this something i should try to get done again at no cost cause they did the work like 2 weeks ago? also i got kinda ahead of myself, does a mechanic drill out the crack? thanks for the info, also if they dont do it again for free, what should i use to do it myself?

Answer 1

just drill a hole at the top of the crack and it wont crack no more!

Answer 2

The hole is to stop the cack from extending but they should have drilled at the start of the crack also.If they dont fix it you can use 1 of 2-part epoxies available at auto part stores, Raise on jackstands drilled side up. You might try a Q-tip with alcohol to clean the inside and wipe the outside apply epoxy and let dry.