fan shroud stud pulled out
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fan shroud stud pulled out
'77 fuel injected bus. While taking off the fan shroud the left lower stud just pulled right out. Hardly holding at all. So, I'm thinking of either try to cement it in or is this a case for one of those heliarc thingies and drill and tap a new set of threads? What think you guys?
Thanks
Joseph
Thanks
Joseph
- Amskeptic
- IAC "Help Desk"
- Status: Offline
Re: fan shroud stud pulled out
Go straight to a step stud without using a helicoil. Drill the hole and tap unless the hole is gouged out just perfectly enough that you can straight on thread in the next size up. You can try a 9X8 or a 10X8 step stud used on exhaust ports most usually.mentalQtip wrote:'77 fuel injected bus. While taking off the fan shroud the left lower stud just pulled right out. Hardly holding at all. So, I'm thinking of either try to cement it in or is this a case for one of those heliarc thingies and drill and tap a new set of threads? What think you guys?
Thanks
Joseph
Because the fan housing is supporting the rapidly spinning alternator and exhaust system over there on the left side, you want this done right.
Colin
BobD - 78 Bus . . . 112,730 miles
Chloe - 70 bus . . . 217,593 miles
Naranja - 77 Westy . . . 142,970 miles
Pluck - 1973 Squareback . . . . . . 55,600 miles
Alexus - 91 Lexus LS400 . . . 96,675 miles
Chloe - 70 bus . . . 217,593 miles
Naranja - 77 Westy . . . 142,970 miles
Pluck - 1973 Squareback . . . . . . 55,600 miles
Alexus - 91 Lexus LS400 . . . 96,675 miles
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- Addicted!
- Location: Portland, Oregon
- Contact:
- Status: Offline
Re: fan shroud stud pulled out
I went with a 10/8 because no place I went said they had an 9/8 stepstud. However it worked great and the shroud is firmly secure.
Thanks
Joseph
Thanks
Joseph
- asiab3
- IAC Addict!
- Location: San Diego, CA
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Re: fan shroud stud pulled out
Glad you got it; I've never heard of a 9/8 step stud, but most good* hardware stores stock a range of 10/8 studs.mentalQtip wrote:I went with a 10/8 because no place I went said they had an 9/8 stepstud. However it worked great and the shroud is firmly secure.
Robbie
*not Home Depot or Lowes.
1969 bus, "Buddy."
145k miles with me.
322k miles on Earth.
145k miles with me.
322k miles on Earth.
- Amskeptic
- IAC "Help Desk"
- Status: Offline
Re: fan shroud stud pulled out
Some Type 4 engines had "first repair step" 9 X 8 exhaust studs, they are completely impossible to obtain, I have been told.asiab3 wrote:Glad you got it; I've never heard of a 9/8 step stud, but most good* hardware stores stock a range of 10/8 studs.mentalQtip wrote:I went with a 10/8 because no place I went said they had an 9/8 stepstud. However it worked great and the shroud is firmly secure.
Robbie
*not Home Depot or Lowes.
German Supply has the 10 x 8 repair studs.
Colin
BobD - 78 Bus . . . 112,730 miles
Chloe - 70 bus . . . 217,593 miles
Naranja - 77 Westy . . . 142,970 miles
Pluck - 1973 Squareback . . . . . . 55,600 miles
Alexus - 91 Lexus LS400 . . . 96,675 miles
Chloe - 70 bus . . . 217,593 miles
Naranja - 77 Westy . . . 142,970 miles
Pluck - 1973 Squareback . . . . . . 55,600 miles
Alexus - 91 Lexus LS400 . . . 96,675 miles
- asiab3
- IAC Addict!
- Location: San Diego, CA
- Contact:
- Status: Offline
Re: fan shroud stud pulled out
I have put them on my list, joining the largest size T4 flywheel shims.Amskeptic wrote: Some Type 4 engines had "first repair step" 9 X 8 exhaust studs, they are completely impossible to obtain, I have been told.
1969 bus, "Buddy."
145k miles with me.
322k miles on Earth.
145k miles with me.
322k miles on Earth.
-
- Addicted!
- Location: Portland, Oregon
- Contact:
- Status: Offline
Re: fan shroud stud pulled out
With trepidation I drilled and tapped and threaded the 8/10 step stud in and damn, it holds securely. The shroud is mounted and the engine is installed. Yay!
Thanks
Joseph
Thanks
Joseph
- asiab3
- IAC Addict!
- Location: San Diego, CA
- Contact:
- Status: Offline
Re: fan shroud stud pulled out
Congrats! Now in a hundred years when the internet is connected to human brains, people will be politely discussing why the "factory" might have used an eight-ten stepped stud.
Robbie
Robbie
1969 bus, "Buddy."
145k miles with me.
322k miles on Earth.
145k miles with me.
322k miles on Earth.