Those who have done a timing belt on an A4 could you tell me...

Barty · 03-27-2006, 05:33 AM

1. Do you have to loosen the cam sprockets as shown in Betley? What is the purpose of pulling them off with a puller? Why is this step necessary?

2. Do you have to remove the harmonic damper?

3. Bentley says that you first loosen the timing belt tensioner, then remove belt, then loosen the cam sprockets and then install the lock bar? This does not sound right to me. Wouldn't you risk moving the cams a bit doing that? Shouldn't installing the cam lock bar be the first step?

TIA as always.

Mr.D-'97 A4q 12v · 03-27-2006, 06:10 AM

1. The purpose is to realign the sprockets with the belt and crank in case they have moved at all. I didn't do this step during my first TB change with no ill affects.

2. Yes, 8 bolts hold it onto the crank.

3. You cannot remove the belt with the cam bar in place. What I did was turn the engine to TDC, installed the crank lock and cam bar (to make sure everything is aligned), loosen the tensioner, and then remove the cam bar and the timing belt. If the engine is at TDC, the cams should not move.

Barty · 03-27-2006, 11:34 AM

I bet it will become a lot clearer to me once I see everything during teardown. Just out of curiosity: what was your time from start to finish? I am planning to change W/P and thermostat but I hope that this will not add too much time to the job.

Mr.D-'97 A4q 12v · 03-27-2006, 02:07 PM

MikTip · 03-27-2006, 02:59 PM

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Bryans12v · 03-28-2006, 12:07 PM

to replace those 8 pulley bolts. My third TB job the stripped to crap.

Maybe a good tip for Barty to have them on hand.

Mr.D-'97 A4q 12v · 03-28-2006, 04:06 PM

However, I have done 3 or 4 other timing belt jobs in between so I've had some good experience with this stuff. ;-)

Thanks for the advice, I'll have to remember that for next time.

jbrentd · 03-29-2006, 07:33 AM

03-27-2006, 06:10 AM	#2
Mr.D-'97 A4q 12v Member Garage is empty, add now Join Date: Jun 2002 Posts: 8,112	Answers.... 1. The purpose is to realign the sprockets with the belt and crank in case they have moved at all. I didn't do this step during my first TB change with no ill affects. 2. Yes, 8 bolts hold it onto the crank. 3. You cannot remove the belt with the cam bar in place. What I did was turn the engine to TDC, installed the crank lock and cam bar (to make sure everything is aligned), loosen the tensioner, and then remove the cam bar and the timing belt. If the engine is at TDC, the cams should not move. __________________ ***** '05 Boxster S (Speed Yellow) '97 A4 2.8Q 12V (Cactus Green) Mods? I got 'em. Baltimore, MD

03-27-2006, 11:34 AM	#3
Barty New Member Garage is empty, add now Join Date: Nov 2004 Posts: 102	Thanks a lot... I bet it will become a lot clearer to me once I see everything during teardown. Just out of curiosity: what was your time from start to finish? I am planning to change W/P and thermostat but I hope that this will not add too much time to the job. __________________ 1997 A4 1999 A6 Avant

03-27-2006, 02:07 PM	#4
Mr.D-'97 A4q 12v Member Garage is empty, add now Join Date: Jun 2002 Posts: 8,112	First time, probably about 12 hours. Last time, maybe 5. __________________ ***** '05 Boxster S (Speed Yellow) '97 A4 2.8Q 12V (Cactus Green) Mods? I got 'em. Baltimore, MD

03-27-2006, 02:59 PM	#5
MikTip AudiWorld Expert Garage is empty, add now Join Date: Jun 2000 Posts: 29,354	Step-by-step- - __________________ 2004 A4 1.8t USP Quattro 6MT K04-15/APR/TT 225 Injectors/Custom Stainless Exhaust/710N/RaceTec FMIC 034 HFC/Jet-Hot Cermi-coated & ported exhaust manifold Spec Stage 3+ with OE DMFW! Neuspeed TIP/Neuspeed Snub/Optima 75-35/AFE Pro-Dry/FSI Coils AMS Short-shift @ %40 redux(Sweet!) ST Coils/ H-Sport Anti-Sway bars/E-codes 19x8.5 OEM Audi Skinny Fives with 235-35 Bridgestone 760 Sport Skins B7 A4 brakes with StopTech Ceramic pads and Stop Tech rotors Sirius Satellite Radio Ross-Tech HEX-USB+CAN Equipped Escort 9500ix

03-28-2006, 12:07 PM	#6
Bryans12v AudiWorld Super User Garage is empty, add now Join Date: Jun 2001 Posts: 6,545	Have you ever had.. to replace those 8 pulley bolts. My third TB job the stripped to crap. Maybe a good tip for Barty to have them on hand. __________________

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03-28-2006, 04:06 PM	#7
Mr.D-'97 A4q 12v Member Garage is empty, add now Join Date: Jun 2002 Posts: 8,112	No, I haven't had that problem but I've only removed them from my car twice. However, I have done 3 or 4 other timing belt jobs in between so I've had some good experience with this stuff. ;-) Thanks for the advice, I'll have to remember that for next time. __________________ ***** '05 Boxster S (Speed Yellow) '97 A4 2.8Q 12V (Cactus Green) Mods? I got 'em. Baltimore, MD

03-29-2006, 07:33 AM	#8
jbrentd AudiWorld Senior Member 2001 Audi A4 Join Date: Dec 2005 Posts: 1,151	then i'm glad i had my mechanic do it. i don't have 12 hours to devote to such an undertaking. __________________ 2001 Audi A4 Avant 1.8T Quattro Manual Pelican 1996 Audi A4 2.8L V6 Quattro Manual SOLD

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