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914World.com _ 914World Garage _ Self loosening axle bolts-will spring waters take care of this?
Posted by: Tdskip Oct 15 2018, 07:06 AM
Good morning-hope everybody had a good weekend.
It would seem as if one of the rights of 914 ownership passages is dealing with self-loosening axle bolts.
Will the correct size spring washers from Ace deal with this, or do I need special serrated ones, or do I need to safety wire them?
Thanks in advance for the help, have a good morning.
Posted by: TheCabinetmaker Oct 15 2018, 07:38 AM
New Schnoor washers and proper torque will keep them right. Threads need to be clean
Posted by: mepstein Oct 15 2018, 07:40 AM
New Schnoor washers and proper torque will keep them right. Threads need to be clean
That’s the proper fix.
Posted by: VaccaRabite Oct 15 2018, 07:55 AM
Yes the new Schnoor washers and clean threads, but adding safety wire does not hurt either.
Zach
Posted by: wndsrfr Oct 15 2018, 08:00 AM
Yes the new Schnoor washers and clean threads, but adding safety wire does not hurt either.
Zach
Posted by: Tdskip Oct 15 2018, 08:08 AM
Thanks Gentlemen
Posted by: 914forme Oct 15 2018, 05:06 PM
I do that, and then safety wire them. That works every time. You do that when you are younger and drive the 914 to clients. The CV fell off on my way to one of them, no problem, except hand got covered in CV grease, luckily I knew them well, not a first impression sort of thing. Still not my most professional day. 
Same day I also discovered my fuel level sender was not working and ran out of fuel on the way back home. Murphy was batting a 1000 that day. Still had a huge smile on my face from 
Posted by: Tdskip Oct 15 2018, 07:49 PM
Pulled one to go make sure I get the right size washers. The split washers on here for apparently useless, and the threads were very greasy
Posted by: Mark Henry Oct 15 2018, 07:56 PM
That's not a factory bolt or washer.
Posted by: SirAndy Oct 15 2018, 07:57 PM
That bolt doesn't look right, also, the center part of the threads is stripped ...
Posted by: jcd914 Oct 15 2018, 08:00 PM
Pulled one to go make sure I get the right size washers. The split washers on here for apparently useless, and the threads were very greasy
Those bolts are not the original type of bolt used for 914 CV joints.
I would be ordering some new bolts and probably get the "drilled for safety wire" bolts since I was getting new bolts.
You need to be sure the bolts are the correct strength.
Jim
Posted by: 914sgofast2 Oct 15 2018, 08:05 PM
It’s the wrong bolt for the CV joints. They are supposed to be the riebe style, which looks somewhat like an internal multi faceted Allen bolt. As already stated, you also need the special schnorr (spelling?) style of lock washers for the bolts.
Posted by: Mark Henry Oct 15 2018, 08:06 PM
That bolt doesn't look right, also, the center part of the threads is stripped ...
Flattened, likely from banging against the loose CV.
Factory bolts /4 are only threaded part way, 8mm tri-square female. schnorr washers are thin wavy washers with teeth ridges.
Posted by: 914_teener Oct 15 2018, 09:37 PM
Go buy a lottery ticket if you had that on the freeway.
Posted by: Larmo63 Oct 15 2018, 09:56 PM
I'm pretty sure 914 Rubber sells the correct drilled ones.....?
Posted by: Mikey914 Oct 15 2018, 10:06 PM
Yep
https://shop.914rubber.com/914-CV-bolt-drilled-for-safety-wire-includes-wave-washer-914CVB.htm?categoryId=-1
Got the wire and tool if you need it. Also just the Schorr washers .20 each
https://shop.914rubber.com/Schnorr-washers-for-CV-joint-bolts-individual-part-SCHM8.htm
Posted by: pete000 Oct 15 2018, 10:18 PM
Rebuilding my CV joints and noticed my car was missing one roll pin and had no schorr washers ! Replacing all the bolts, adding the washers. Amazed the car did not have any issues running just on roll pin on one of the joints. I guess low power application helps !
What is the torque spec for the CV bolts?
Posted by: RenoRoger Oct 16 2018, 03:21 AM
Rebuilding my CV joints and noticed my car was missing one roll pin and had no schorr washers ! Replacing all the bolts, adding the washers. Amazed the car did not have any issues running just on roll pin on one of the joints. I guess low power application helps !
What is the torque spec for the CV bolts?
Haynes says 31lbs, others say 25 lbs
Posted by: wndsrfr Oct 16 2018, 06:05 AM
I'm pretty sure 914 Rubber sells the correct drilled ones.....?
I've drilled some...not hard to do...1/16 bit and some quiet time...
Posted by: IronHillRestorations Oct 16 2018, 06:22 AM
The Schnoor washers are a one and done part, which is why we get in trouble in the early years of 914 ownership.
"Ya mean I have to get new ones every time I pull the engine?", yes.
Posted by: mskala Oct 16 2018, 06:58 AM
IMO, if you use _new_ schnorr washers each time, then having grease-free threads
is not necessary. I've installed and removed a bunch of times, I could never get the
area clean while still having grease everywhere you need it. I've checked the torque
before each autocross, they have never loosened even a little.
Posted by: Bartlett 914 Oct 16 2018, 09:22 AM
I have said this and I will say it again. When the cv comes loose, it distorts the output flange. It causes the threaded holes to be pulled out slightly. This no longer allows the cv to sit perfectly flat to the output flange. This is the main cause of cv's coming loose. Remove the output flange and turn a cleanup cut on the face. The material is not hardened and it cleans up nicely. Twice my cv's came off in a years time. I discovered this issue. They remain tight to this day
Posted by: burton73 Oct 16 2018, 09:44 AM
Yep
https://shop.914rubber.com/914-CV-bolt-drilled-for-safety-wire-includes-wave-washer-914CVB.htm?categoryId=-1
Got the wire and tool if you need it. Also just the Schorr washers .20 each
https://shop.914rubber.com/Schnorr-washers-for-CV-joint-bolts-individual-part-SCHM8.htm
Just get these from 914rubber and be done.
Bob B
Posted by: porschetub Oct 16 2018, 01:10 PM
Rebuilding my CV joints and noticed my car was missing one roll pin and had no schorr washers ! Replacing all the bolts, adding the washers. Amazed the car did not have any issues running just on roll pin on one of the joints. I guess low power application helps !
What is the torque spec for the CV bolts?
Haynes says 31lbs, others say 25 lbs
Do mine @ 30lbs seem to remember Eric @ PMB stated something like that,the bolts are strong enough to take it and yes make sure they and clean and inspect the threads and bin any damaged ones.
Posted by: TravisNeff Oct 16 2018, 02:05 PM
I bought a big bag of the schnorr washer from McMaster
Posted by: Jeff Hail Oct 16 2018, 06:45 PM
Good morning-hope everybody had a good weekend.
It would seem as if one of the rights of 914 ownership passages is dealing with self-loosening axle bolts.
Will the correct size spring washers from Ace deal with this, or do I need special serrated ones, or do I need to safety wire them?
Thanks in advance for the help, have a good morning.
"spring waters "?
[b]Self loosening axle bolts-will spring waters take care of this?
[/b]
Sure as natures Lock-Tight it will help. A little rust will keep them from backing out.
Posted by: jfort Oct 16 2018, 06:59 PM
My notes to myself:
Axle bolts: 6mm Allen (after market wire drilled) on the inner side, 8mm 12 point on the outer side. Torque to 30 ft-lbs
Posted by: jim_hoyland Oct 16 2018, 07:43 PM
Nice info here on Schnoor washers:. https://schnorr.com/products/safety-washers/
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