Shock install concical washer confusion
03-10-2011, 09:26 AM
#1
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Thread Starter
Shock install concical washer confusion
I need clarification for the rear shock installation on my 79 5 spd please.
WSM (left picture item #13 )shows a conical washer fitting into a cone recessed area on the front and back of the hub assembly. When I removed the thru bolt I did not find a conical washer inserted on the front side of the hub but there is a coned recess for what would look like a washer to fit.
The "rear coil over" install write up (right pic) for an 87 shows the conical washers going on both sides of the lower shock mount arm.
Is the 87 write up not applicable to the 79? Should I have a conical washer in the cone space on the front and back of the hub or per the picture from the write up?
Thanks
WSM (left picture item #13 )shows a conical washer fitting into a cone recessed area on the front and back of the hub assembly. When I removed the thru bolt I did not find a conical washer inserted on the front side of the hub but there is a coned recess for what would look like a washer to fit.
The "rear coil over" install write up (right pic) for an 87 shows the conical washers going on both sides of the lower shock mount arm.
Is the 87 write up not applicable to the 79? Should I have a conical washer in the cone space on the front and back of the hub or per the picture from the write up?
Thanks
03-10-2011, 09:37 AM
#2
Burning Brakes
No deep experience with the OB's here, but I did pull up PET 7.1 and took a quick snap of what they show for the MY 79 rear... Looks like conical washers on both sides...
03-10-2011, 09:54 AM
#3
Nordschleife Master
Trying to see the pics but I believe you've got the washers facing the wrong way. With the lower arm in play you'll see there are conical faces that the washers match with.
03-10-2011, 10:00 AM
#4
Supercharged
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Yeah, pretty sure the conicals are a fundamental part of the design for all years of the 928.
I'd say the last person who was in there messed up and forgot the washer.
I'd say the last person who was in there messed up and forgot the washer.
03-10-2011, 10:02 AM
#5
Supercharged
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That's not his picture. It's from the writeup he's following. The conical portions should sandwich the hub carrier. The picture is wrong.
Last edited by AO; 03-10-2011 at 11:11 AM.
03-10-2011, 10:03 AM
#6
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Take a look at the openings in the hub carrier bottom ... if you see a concave machined area, then you would certainly need the cone washer to fit in there to hold the pin in position. As best I can tell, Porsche used these washers to transfer loads from the alloy carrier onto the steel pin.
The alloy itself is not hard enough to just have the pin bear on the opening directly so they used the cone washers to transfer the load over a larger surface area.
At least that's how it looked when I did shocks on my car.
The alloy itself is not hard enough to just have the pin bear on the opening directly so they used the cone washers to transfer the load over a larger surface area.
At least that's how it looked when I did shocks on my car.
Last edited by Tom in Austin; 03-10-2011 at 12:29 PM.
03-10-2011, 10:09 AM
#7
Nordschleife Master
Ummmm... No.
The conicals sandwich the hub carrier. One faces the shock (with the flat side).
Tom's description is good as to where and why these are used.
The conicals sandwich the hub carrier. One faces the shock (with the flat side).
Tom's description is good as to where and why these are used.
Last edited by GlenL; 03-10-2011 at 10:46 AM. Reason: "hub carrier"
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03-10-2011, 10:43 AM
#9
Team Owner
in the picture you posted post 1,
the conical washers are facing the wrong way the conical portion faces to the hub carrier, the flat side faces away from the hub carrier
use some thick grease to hold them in position use antiseize on the link pin
the conical washers are facing the wrong way the conical portion faces to the hub carrier, the flat side faces away from the hub carrier
use some thick grease to hold them in position use antiseize on the link pin
03-10-2011, 12:16 PM
#11
Rennlist Member
Thread Starter
So what I should end up with is a conical in the recessed concial space on each side of the hub carrier and the shock will have the flat face of the rear hub conical on one side and the large flat washer on the outer/ rear side of the shock lower mount.
Thanks guys. That's what I thought but got thrown off by the picture in the write up.
Thanks guys. That's what I thought but got thrown off by the picture in the write up.
03-10-2011, 12:19 PM
#12
Nordschleife Master
Do you have those parts? If not you might check with Austin VW and see if they can pull them off one of the 928's they are parting...or let you pull them...
03-10-2011, 12:39 PM
#13
Burning Brakes
03-10-2011, 01:33 PM
#14
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Thread Starter
I have all the parts. The confussion was in the order for reassembly as the write up I found in the threads was counter to the way it looked like it should be assembled and what was in the WSM. I hope to have it back togather tonight.
03-10-2011, 02:15 PM
#15
Team Owner
FWIW that was a picture posted by Bill Ball, Post 1, a few years ago..
and he said that in the picture the conical washers are not facing the correct way,
they need to be turned around so the conical portion faces the hub carrier.
and he said that in the picture the conical washers are not facing the correct way,
they need to be turned around so the conical portion faces the hub carrier.