Notices
924/931/944/951/968 Forum Porsche 924, 924S, 931, 944, 944S, 944S2, 951, and 968 discussion, how-to guides, and technical help. (1976-1995)
Sponsored by:
Sponsored by:

Cam timing gear removal Q.

Thread Tools
 
Search this Thread
 
Old 12-01-2004, 05:58 PM
  #1  
shmucklebuckle
Three Wheelin'
Thread Starter
 
shmucklebuckle's Avatar
 
Join Date: Aug 2004
Location: Orange County, CA
Posts: 1,340
Likes: 0
Received 0 Likes on 0 Posts
Default Cam timing gear removal Q.

My camshaft timing gear needs to come off so I can replace the seal behind it. I read up on all the processes neccesary to do the seals at clark's garage, and his directions said to use a gear puller, which I bought and have tried to use with wd 40 and a propane torch to heat the gear (thereby expanding the gear, making it easier to remove. in theory.). And the gear moved.... A little. but I've put alot of preasure on it already, and it's not movin' anymore. I just wanted to make sure that it's SUPPOSED to come off like this, there's no threading or anything inside the gear, right? Any other tricks you guys could think of to get it off would be very very very much appreciated. I think I'm gonna shoot it!

Thanks everyone!
Old 12-01-2004, 06:06 PM
  #2  
Gator_86_951
Spell Checker
Rennlist Member
 
Gator_86_951's Avatar
 
Join Date: Jun 2004
Location: Alexandria, VA
Posts: 21,357
Received 393 Likes on 296 Posts
Default

You took out the triple-square bolt in the center of the cam gear right. If not, do that. Also, don't get the cheap lisle triple-square bit. It will break. I promise. Get a quality piece from snap-on or something. You will also need an 1-1/4 or similar metric wrench to hold the gear in place to get out the bolt. You could also probably use another set of hands. You the word triple-square. Clarks-garage is the only place in the world to refer to it as cheese-head. Once that is out your gear puller will take it right now pretty easily.

I think that bolt is intended to be replaced. My head machinist sent me a new one. The woodruff key can be a pain to take out too.
Old 12-01-2004, 06:06 PM
  #3  
Sam Lin
Addict
Rennlist Member

 
Sam Lin's Avatar
 
Join Date: Jul 2003
Location: Gilbert, AZ, USA
Posts: 3,787
Likes: 0
Received 16 Likes on 12 Posts
Default

Just to double check, you've removed the center bolt (with the cheesehead), right?

Sam
Old 12-01-2004, 06:16 PM
  #4  
shmucklebuckle
Three Wheelin'
Thread Starter
 
shmucklebuckle's Avatar
 
Join Date: Aug 2004
Location: Orange County, CA
Posts: 1,340
Likes: 0
Received 0 Likes on 0 Posts
Default

oops...

Man I must be really tired right now. and embarassed for not remembering to follow directions. I guess I deserved this one!

I guess I don't need to shoot it now, just take out a bolt... This never happened... wink, wink...
Old 12-01-2004, 06:21 PM
  #5  
Gator_86_951
Spell Checker
Rennlist Member
 
Gator_86_951's Avatar
 
Join Date: Jun 2004
Location: Alexandria, VA
Posts: 21,357
Received 393 Likes on 296 Posts
Default

Don't worry about it. I think the bit is 10mm triple-square.
Old 12-01-2004, 08:11 PM
  #6  
Jakerx
Hitsquad Ninja
Rennlist Member
 
Jakerx's Avatar
 
Join Date: Nov 2003
Location: Texas
Posts: 10,406
Likes: 0
Received 2 Likes on 2 Posts
Default

hey don't worry i've done stupider things
Old 12-01-2004, 10:32 PM
  #7  
joseph mitro
Race Car
 
joseph mitro's Avatar
 
Join Date: Apr 2002
Location: Oklahoma
Posts: 4,009
Received 246 Likes on 160 Posts
Default

Originally Posted by Gator_86_951
You the word triple-square. Clarks-garage is the only place in the world to refer to it as cheese-head. Once that is out your gear puller will take it right now pretty easily..
except the factory manual, that is....

Originally Posted by Gator_86_951
I think that bolt is intended to be replaced. My head machinist sent me a new one. The woodruff key can be a pain to take out too.
i had to drill mine out last year when replacing the head. the shop that finished the repair replaced it with an M10 or M12 hex head bolt.
Old 12-02-2004, 12:05 AM
  #8  
Gator_86_951
Spell Checker
Rennlist Member
 
Gator_86_951's Avatar
 
Join Date: Jun 2004
Location: Alexandria, VA
Posts: 21,357
Received 393 Likes on 296 Posts
Default

Yes, you are right. So I guess porsche and clarks-garage are the only ones. I mentioned that so it wasn't a pain to find the tool for him. It will save him like 10 minutes trying to find it I guess. Good call.

Was you shop able to get the proper torque value with just a hex bolt? I think the torque value was like 50ft-lbs or something. According to the documentation Porsche moved away from a Torx or maybe it was a Hex on the earlier 2.5L motors. Am I wrong here? Yeah, it says that at clarks-garage. It is speculation for me at this point, so I replaced it with the factory part. Will that bolt come back off the next time?
Old 12-02-2004, 01:01 AM
  #9  
dualblade
Burning Brakes
 
dualblade's Avatar
 
Join Date: Apr 2002
Location: Long Island, NY
Posts: 1,049
Likes: 0
Received 0 Likes on 0 Posts
Default

matco and snap on trucks will have the 10mm cheesehead in 1/2 inch drive. it'll be about $20. i used a 1/2 drive ratchet with a jack handle on top for leverage to get mine off. you will need a wrench on the large bolt or you'll just rotate the cam
Old 12-02-2004, 01:07 AM
  #10  
joseph mitro
Race Car
 
joseph mitro's Avatar
 
Join Date: Apr 2002
Location: Oklahoma
Posts: 4,009
Received 246 Likes on 160 Posts
Default

i'm assuming they were able to obtain the correct torque value on the hex head bolt. I was able to remove it without too much difficulty (at least i didn't have to drill the damn thing out this time!)
Old 12-02-2004, 03:16 AM
  #11  
Gator_86_951
Spell Checker
Rennlist Member
 
Gator_86_951's Avatar
 
Join Date: Jun 2004
Location: Alexandria, VA
Posts: 21,357
Received 393 Likes on 296 Posts
Default

Yeah. I am sure it will be fine. What are the chances of you taking it apart in 17 years right :-). Just wanted to make sure he wouldn't be f-ed if he used the hex bolt. What color is your s. We are thinking about picking up a yellow one for pretty cheap.
Old 12-02-2004, 02:42 PM
  #12  
500
RL Community Team
Rennlist Member
 
500's Avatar
 
Join Date: May 2004
Location: Toronto
Posts: 3,324
Received 156 Likes on 98 Posts
Default

I just removed mine and used the cheapo Lisle one and it was OK. Pretty tight though, did need a 2' bar. I'm sure a Snap On bit would be a wise investment and I'll probably get one just to be safe in the future.

I cracked mine off with the old timing belt on (and the flywheel lock too). I didn't have anybody reliable nearby to counter. It worked well for me. Although mine looks fine, I am replacing it with a new factory piece upon re-assembly.
Old 12-02-2004, 05:22 PM
  #13  
Danno
Race Director
 
Danno's Avatar
 
Join Date: Jul 2001
Location: Santa Barbara, CA
Posts: 14,075
Likes: 0
Received 3 Likes on 3 Posts
Default

THe first time I removed that bolt from the cam, I used an impact driver with the cheesehead bit.



Quick Reply: Cam timing gear removal Q.



All times are GMT -3. The time now is 12:45 AM.