Date: Sun, 1 Jun 2025 12:28:18 -0700
Reply-To: Rick Cooper <rick@WEBLEAF.CA>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Rick Cooper <rick@WEBLEAF.CA>
Subject: Re: CV Joint bolts, washers, gasket
In-Reply-To: <SJ2P222MB0972EDDF2666DFB6C1DBD695A063A@SJ2P222MB0972.NAMP222.PROD.OUTLOOK.COM>
Content-Type: text/plain; charset=utf-8
Thanks Dennis, that is very helpful and I'm sure I can find the Schnorr washers with this info. I'm cc'ing the list since I failed to hit Reply to All, in response to your first reply, so readers can your comments about the washers below.
Erik, thanks also for your reply. Good advice re checking and possibly replacing the boots. I agree re the triple square heads and am replacing my current 6mm Allen head bolts with those.
Rick
On Sun, Jun 1, 2025, at 6:28 AM, Dennis Haynes wrote:
> The washers are known as Schorr washers.
>
> Schnorr Washer Steel "VS" Series High Strength - BelMetric <https://belmetric.com/schnorr-washer-steel-vs-series-high-strength/?>
>
> Note that they, like most all washers come in different grade ratings. Be sure to get the 10.9. This is already a compromise as the proper bolts will be grade 12.9.
> A properly designed and installed fastener system does not need a lock washer. It is used here to compensate for known deficiencies. Loosening indicates something in the connection is overloaded or not installed correctly. One of the failure points is the soft metal flange of the CV joint boot. If is compresses under load after install the bolt looses pre-load and the connection will become loose. The lock washer helps to hide that having some spring pressure to maintain some tension and resist the fastener from unthreading. However, at that point the connection has really failed.
>
> Dennis
>
>
> *From:* Rick Cooper <rick@webleaf.ca>
> *Sent:* Saturday, May 31, 2025 2:57 PM
> *To:* Dennis Haynes <d23haynes57@hotmail.com>
> *Subject:* Re: CV Joint bolts, washers, gasket
>
> Thanks Dennis. On the phone, my local parts store did not have the serrated washers for a Vanagon. Are these a special washer for vanagons or might I find them in the store's bulk washer section?
>
> That was my thought on the loctite, if I happen to strip a bolt it'll be a pain to get it out next time.
>
> I suspect it was by putting in the cork gaskets last time, that my torque was off.
>
> Rick
>
> On Sat, May 31, 2025, at 11:09 AM, Dennis Haynes wrote:
>> You should not have a gasket. If the joints have a gasket and the space for it they are the wrong joints.
>> Loctite can make for a worse day should the bolt heads strip out. The serrated washers are one time and readily available. Another problem is the bolt quality and the threads in the hubs are wearing out.
>> I have had the bolts stretch while installing.
>>
>> Dennis
>> Sent from my iPhone
>>
>> > On May 31, 2025, at 12:47 PM, Rick Cooper <rick@webleaf.ca> wrote:
>> >
>> > I rebuilt my CV joints about a year ago. A few days ago I noticed that some of the bolts had come loose so I am removing, repacking with new grease and reinstalling.
>> >
>> > My question is about the fasteners and torque specification. When I installed them a year ago, I used the cork gasket that came with the new joint. I tried to installed the large cupped 'washer' that I think goes on the axle side of each joint, but I couldn't get the joint on with it so I did not install it. Is that why my bolts came loose?
>> >
>> > I read on thesamba that you should not install the cork washer (unless there is a groove for it) since it will shrink -- maybe that's why my bolts came loose?
>> >
>> > I also used the serated washers that were originally on the van (my joint kit included new bolts but no washers). Why would the new kit not include the serated washers? Are they no longer recommended?
>> >
>> > Finally last time I torqued the bolts to 33 ft lbs but did not use blue loctite as some (on the samba) have done. Should I be using loctite?
>> >
>> > I'd really like to avoid the bolts coming loose. Any advice much appreciated.
>> >
>> > Rick
>>
>
| 
