davegsm82
Go Kart Newbie
- Location
- Blyth, Northumberland - England
- Car(s)
- MK7 Golf and T3 Tdi
Bit of a random one, today I was doing an oil service on my 2013 MK7 GT TDi and also trying to identify which side the failing wheel bearing is on, when I looked at the passenger side inner CV area I noticed there was some CV grease accumulated on the gearbox etc.
When I had a closer look, one of the 6 CV bolts had grease all around it, coming out from under the head. When I pulled the bolt just with greasy fingers, it came out with a little persuasion.
It had snapped about 10mm from the head, leaving the rest of the stud stuck in the driveshaft flange, I had to remove the lower balljoint, unbolt the 5 remaining CV bolts and use a stud/bolt extractor on the remaining thread which was an absolute pig to remove.
I replaced it with an almost identical spare from my junk box, so that's not a problem, however when I looked at the bolt closely it's not stretched, twisted or anything, just snapped clean in two. Furthermore when I put the 5x originals back in, they felt a bit... stretchy, as if they were yielding as I torqued them up. The replacement one came from my old PD150 MK4 and it definitely did NOT yield as I put pressure on it.
Are MK7 CV bolts TTY? Do they have a habit of just randomly snapping?
When I had a closer look, one of the 6 CV bolts had grease all around it, coming out from under the head. When I pulled the bolt just with greasy fingers, it came out with a little persuasion.
It had snapped about 10mm from the head, leaving the rest of the stud stuck in the driveshaft flange, I had to remove the lower balljoint, unbolt the 5 remaining CV bolts and use a stud/bolt extractor on the remaining thread which was an absolute pig to remove.
I replaced it with an almost identical spare from my junk box, so that's not a problem, however when I looked at the bolt closely it's not stretched, twisted or anything, just snapped clean in two. Furthermore when I put the 5x originals back in, they felt a bit... stretchy, as if they were yielding as I torqued them up. The replacement one came from my old PD150 MK4 and it definitely did NOT yield as I put pressure on it.
Are MK7 CV bolts TTY? Do they have a habit of just randomly snapping?