Porscheaddiction

Hey guys I'm in the middle of my 1st TB/WP replacement. I have all the acc belts off the oil dipstick tube and oil tube off. The passenger side and drivers side covers are off as well. oil and coolant drained. How does the center tb cover come off? Have done a search some say the crankshaft pulleys have to come off and others seem to have taken it off just by having the oil dipstick/tube off.

Car is an 84' 928S

Thanks
Chris

RyanPerrella

one of the WP bolts must be removed, it the longest one.

the crank pulleys have to come off to replace the belt, but you dont need to pull them to remove the cover.

You do have to remove the alternator bracket which holds the alternator and the PS pump though

EDIT: this is for 32V cars, but Im sure its similar for a 16V

Landseer

You have to remove the crankshaft bolt (which is highly tightened) to remove the cover.

Its 1 1/16" and best done with a 3/4 drive set and a pipe on the end of it. Careful of your fenders.

You need the flywheel lock for this. Some folks claim they can put car in 5th and block wheels to break it free as an alternative.

RyanPerrella

really? does the cover interfere with the balance or something on the earlier cars? this is not the case on later cars. I wasnt aware,.... not that i have ever fooled around with a 16V car though.

Landseer

Yes, the cover gets trapped behind the pulley.

Mrmerlin

the timing cover will hit thew AC pulley .( but sometimes you can maneuver the cover around it , but then the cover will usually snap in one section or another)

also there is another 13mm bolt that holds the timing cover on it is at the top of the tensioner assembly sort of hidden under the airpump bracket

underdog928

I have taken the center TB cover off on my '85 without having to pull either the A/C pulley or the harmonic balancer. You need to be careful, but it does just clear the balancer.

SeanR

It's weird how some will come off with it all assembled and some won't

My 88 wouldn't come off, but an 88 I did the other day it came of really fast. Both covers were in great shape too.

Erik N

+1 on an '81 euro S engine. Just be careful.

Landseer

Pull the crank pulley. You need to do this anyway.

I've never been able to remove an 84 without.

Nor 85 or 86. Maybe its me.

underdog928

Certainly if your replacing the TBelt the pulley and balancer need to come off, but if you are doing an inspection, it saves the work of loosening the crank bolt and then retorquing it.