Noise coming from passengers side valve cover
#33
Nordschleife Master
#34
Nordschleife Master
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
...A WAG would be that the old part was pried on someway thus damaging the trigger ring .
the trigger ring may have already been bent before you removed the old Hall sensor .
Infact why are you replacing the Hall sensor to begin with?
it looks like it may be damaged, thus a clue that the trigger ring is also damaged.
the trigger ring may have already been bent before you removed the old Hall sensor .
Infact why are you replacing the Hall sensor to begin with?
it looks like it may be damaged, thus a clue that the trigger ring is also damaged.
#35
Archive Gatekeeper
Rennlist Member
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
This is the rotor trim you'll need- 928 105 460 01.
$2 (!) at 928Intl.
http://shop.site-link.com/928intl/pr...928-105-460-01
Unfortunately the Hall sensor will be more dear.
$2 (!) at 928Intl.
http://shop.site-link.com/928intl/pr...928-105-460-01
Unfortunately the Hall sensor will be more dear.
![](https://webfiles.uci.edu/redwards/public/S4%2B%20Hall%20sensor%20rotor%20trim%20928%20105%20460%2001%20%207-9-14.jpg)
#36
Rennlist Member
Thread Starter
Join Date: Jul 2012
Posts: 1,200
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Alright so I basically take the cover off. Find a way to hold the camshafts and flywheel in place and then remove the sprokett and damaged parts. I will try and see if I can install the new cam sensor with the cover off so I can verify it doesn't break again
#37
Team Owner
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
put the engine at TDC ,
mark the cams use a few zipties to hold the belt to the DS cam pulley,
then ziptie the belt to the tensioner roller after you loosen the belt tension.
This should hold the belt in place,
then hold the cam from turning with the 30 mm washer nut under the 17mm bolt head,
NOTE use the washer to hold the cam while torquing
mark the cams use a few zipties to hold the belt to the DS cam pulley,
then ziptie the belt to the tensioner roller after you loosen the belt tension.
This should hold the belt in place,
then hold the cam from turning with the 30 mm washer nut under the 17mm bolt head,
NOTE use the washer to hold the cam while torquing
#38
Addict
Lifetime Rennlist
Member
Lifetime Rennlist
Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Interesting close up of the carnage. The metal rotor probably clipped the outer plastic part of the sender, that wrecked the metal part of the sender and then kaboom from there. You can see the plastic and metal sender parts in the close up. Could happen if the metal rotor was bent just enough to catch the sender. Sorry for the misfortune. If I were you i would get a replacement rotor and use the old hall sender.
#39
Rennlist Member
Thread Starter
Join Date: Jul 2012
Posts: 1,200
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
put the engine at TDC ,
mark the cams use a few zipties to hold the belt to the DS cam pulley,
then ziptie the belt to the tensioner roller after you loosen the belt tension.
This should hold the belt in place,
then hold the cam from turning with the 30 mm washer nut under the 17mm bolt head,
NOTE use the washer to hold the cam while torquing
mark the cams use a few zipties to hold the belt to the DS cam pulley,
then ziptie the belt to the tensioner roller after you loosen the belt tension.
This should hold the belt in place,
then hold the cam from turning with the 30 mm washer nut under the 17mm bolt head,
NOTE use the washer to hold the cam while torquing
1) I rotate the crankshaft until it reaches a certain number which means top dead center
2)remove both camshaft sprocket covers
3) with zip ties, zip tie the driver's side sprocket to the belt (to hold the belt in place).
4) zip tie the belt to the tensioner after I loosen the belt tension
5) mark the passender side camshafts <----( don't understand how please explain)
6) hold the cam from turning with the 30 mm washer nut under the 17mm bolt head, NOTE use the washer to hold the cam while torquing
So the driver's side camshaft sprocket wont freely move when i loosen the belt?
#40
Team Owner
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Remove the rotors from both cams first,
then the cam pulley bolt on the right cam,
once this is done the pulley can be removed.
NOTE the cam will turn a few degrees once you remove the belt.
Once the pulley comes off then you can inspect the spider and replace the trigger ring.
NOTE use the 30mm washer nut to hold the cam from turning whist you re torque the cam pulley bolt and to assist in loosening the bolt.
NOTE dont turn the cam with the 17mm bolt head
then the cam pulley bolt on the right cam,
once this is done the pulley can be removed.
NOTE the cam will turn a few degrees once you remove the belt.
Once the pulley comes off then you can inspect the spider and replace the trigger ring.
NOTE use the 30mm washer nut to hold the cam from turning whist you re torque the cam pulley bolt and to assist in loosening the bolt.
NOTE dont turn the cam with the 17mm bolt head
#41
Rennlist Member
Thread Starter
Join Date: Jul 2012
Posts: 1,200
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Getting closer to flying back to ny to repair the 928. Can I hold the camshafts under the passengers side valve cover in place using the cam shaft profile tool from 928intl. I have a strong feeling with my bad luck the zip ties would slip and cause more damage
Last edited by 1989porsche928; 07-19-2014 at 02:14 PM. Reason: typo
#42
Archive Gatekeeper
Rennlist Member
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
The profile tool is meant to be used with the engine set at 45o BTDC- you'll be R&R'ing the cam gear with the engine on TDC, so you can get the cam gear lined up correctly. At 45o BTDC, it looks like the profile tool would hold the exhaust lobe from rotating clockwise, but A) you're not going to be working at 45o BTDC, and B) I wouldn't try to hold back the 48 ft lbs of torque you will be imparting to the camshaft bolt with the profile tool- you'll just scratch or ding the surface of the cam lobe, which will kill the lifter and/or the cam lobe.
Follow Stan's directions and you won't have bad luck- while tightening the cam bolt you'll counterhold with a 12 point 30mm combination wrench.
Follow Stan's directions and you won't have bad luck- while tightening the cam bolt you'll counterhold with a 12 point 30mm combination wrench.
#43
Rennlist Member
Thread Starter
Join Date: Jul 2012
Posts: 1,200
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
I took the Fan out today (plan on removing the tubes/covers/ possible draining the fluid tomorrow). I just wanted to see if you guys knew why this pipe / hose was blocking the passengers side fan, I mean like right against it preventing it from moving/spining. I noticed this a while ago but I just took a picture of the pipe I am talking about with the fan removed. This pipe made removing the fan very hard I actually broke a piece of plastic off trying to take the fan out.
![](http://www.autosynthetic.com/928pipeonfan.jpg)
Last edited by 1989porsche928; 07-23-2014 at 11:57 PM. Reason: d
#44
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
That is the suction line for your A/C compressor. The union joint adjacent to the charge port (top of red frame) might have been loosened in the past during some A/C work and not properly positioned when it was tightened. How are the motor mounts on the car? If they are shot the settled position of the motor might be pushing this line tight against your fan shroud.
Mike
Mike
#45
Team Owner
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
FWIW that fat line can be easily pushed back ever so slightly to clear the fan by a few MMs ,
use two hands and gently push the line,
it will bend at the curved section adjacent to the fender well,
otherwise ,
use Mikes directions and loosen the B nut and the line can be repositioned.
I have found that bending the line works the best.
use two hands and gently push the line,
it will bend at the curved section adjacent to the fender well,
otherwise ,
use Mikes directions and loosen the B nut and the line can be repositioned.
I have found that bending the line works the best.