 CV Bolt Replacement, Best Practice and While I'm in There? |
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| Nogoodwithusernames |
 Jul 2 2020, 10:07 PM
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Member  Group: Members Posts: 281 Joined: 31-May 16 From: Sutter, CA Member No.: 20,051 Region Association: None  |
Was going to take the 914 out for a spin tonight (IMG:style_emoticons/default/driving.gif) and two streets from the house *POP* and engine free revs... Figured I broke an axle or something along those lines and sure enough drive side axle is no longer connected to the trans. Haven't dug in to find out if the bolts sheared or backed out but it needs fixing.
I'm planning on replacing all the CV bolts with the safety wire versions from 914 rubber and obviously safety wiring them. But should I locktite them? Antisieze? Neither? Figure I'd clean them and repack the grease, anything else while I'm under there? Might finally put the new shifter bushings I've had sitting around for eons... (Also how many are there? I think VW has 6 bolts per CV, same for our little NARP? *EDIT* 914 rubber says it right on their site, 16 total.) |
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| bdstone914 |
Jul 3 2020, 07:50 AM
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bdstone914 Group: Members Posts: 4,788 Joined: 8-November 03 From: Riverside CA Member No.: 1,319 |
Clean the holes for the CV bolts. Grease affects the torque value.
If you dont use safety wire put a dot of bright paint on the bottom of the bolt and flange. Check occasionally to see if the dots do not align and they are beginning to back out. |
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| preach |
Jul 3 2020, 01:39 PM
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Ridge Runner Group: Members Posts: 1,040 Joined: 27-March 10 From: Live Free or Die Member No.: 11,513 Region Association: North East States 
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QUOTE(bdstone914 @ Jul 3 2020, 09:50 AM)  Clean the holes for the CV bolts. Grease affects the torque value. If you dont use safety wire put a dot of bright paint on the bottom of the bolt and flange. Check occasionally to see if the dots do not align and they are beginning to back out. I thought that true about grease on fasteners for most of my life. For the last 13 years I have worked as a mechanic and we are required to lubricate fasteners unless we are required to loctite them. Most of the time it is Molykote P-37, but often it is system oil and in some systems another type of lube. The engineering thought behind this is that a fastener can have small imperfections that can bind and distort the real torque value. The lubrication prevents this as well as minimizes the chance of the fastener to gall. The majority of the fasteners I deal with have some sort of locking device, wire or locking elements/anaerobic fluid. Additionally many of them are not ferrous metal and will gall pretty easy. In my shop at home I tend to use a lubricant on all fasteners except for lug nuts. Not arguing the point just putting up my experience. |
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Posts in this topic
Nogoodwithusernames CV Bolt Replacement Jul 2 2020, 10:07 PM
JamesM 4 bolts + 2 roll pins per CV joint.
Make sure you... Jul 3 2020, 02:08 AM
wndsrfr
4 bolts + 2 roll pins per CV joint.
Make sure yo... Jul 3 2020, 06:09 AM 914Sixer Run the 12.9 bolts instead of the stock ones. Use... Jul 3 2020, 06:49 AM ClayPerrine
Run the 12.9 bolts instead of the stock ones. Us... Jul 3 2020, 08:21 AM ericoneal How much torque?
Run the 12.9 bolts instead of ... Jul 3 2020, 03:20 PM 76-914
How much torque?
[quote name='ClayPerrine' post=... Jul 3 2020, 04:20 PM roblav1 If you're running the early 911 CV's with ... Jul 3 2020, 07:36 AM cuddy_k :agree:
Like many things on our cars, it all work... Jul 3 2020, 07:37 AM Bartlett 914 I too have been through this. I discovered the mai... Jul 3 2020, 07:49 AM mepstein
Clean the holes for the CV bolts. Grease affects... Jul 3 2020, 01:54 PM 76-914
[quote name='preach' post='2830669' date='Jul 3 2... Jul 3 2020, 04:18 PM 914_teener
[quote name='preach' post='2830669' date='Jul 3 ... Jul 4 2020, 05:39 PM cary My only addition. If you damage the hex socket in ... Jul 3 2020, 08:04 AM Mikey914 We stock the safety wire version and the Schoor wa... Jul 3 2020, 09:49 AM IronHillRestorations As long as you use new Schnorr washers, make sure ... Jul 3 2020, 11:19 AM michael7810 I think it’s a good idea to recheck the torque a... Jul 3 2020, 11:36 AM mepstein
I think it’s a good idea to recheck the torque ... Jul 3 2020, 11:45 AM 76-914 @914teener :rotfl: I don't know if that was a... Jul 4 2020, 07:01 PM Nogoodwithusernames Alright folks, I finally got around to getting the... Sep 27 2020, 02:37 PM Mikey914 You don’t have to pull it all, but if you are th... Sep 27 2020, 05:21 PM Ansbacher When dropping my engine recently I found my CV bol... Sep 27 2020, 06:16 PM |
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