How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Tim's Auto Repair Your Own Question

Tim's Auto Repair
Tim's Auto Repair, mechanic
Category: VW
Satisfied Customers: 12926
Experience:  Have owned a repair shop for 25 yrs.
14541291
Type Your VW Question Here...
Tim's Auto Repair is online now
A new question is answered every 9 seconds

Volkswagen Jetta GLS hi how do you find the tdc on your crankshaft

Resolved Question:

hi how do you find the tdc on your crankshaft if the belt was removed and marks were not made
Submitted: 3 years ago.
Category: VW
Expert:  Tim's Auto Repair replied 3 years ago.

usethefactory marks

thanks

 

Please ACCEPT my answer so I can get credit for my work.i don't receive commission unless you do ..I'm not always going to be giving you good news,so please don't let this stand in the way of you accepting my answer.it does not cost you more money.we will still be able to communicate.. Bonuses and positive feedback are appreciated!if you are not satisfied with my answer,please do not leave bad feed back,i will gladly opt out and let another expert handle the question.if i have sent any diagrams,please print them.they will only stay on here for an hour or so.PLEASE ASK IF YOU NEED MORE HELP

 

Removal & Installation




WARNING Do NOT turn the engine or camshaft with the timing belt removed. The pistons will contact the valves and cause internal engine damage.

NOTE The radio may have a coded theft protection circuit. Obtain the code before disconnecting the battery, removing the radio fuse, or removing the radio.

CAUTION Timing belt maintenance is extremely important. All Hyundai models use interference-type non-freewheeling engines. Should the timing belt break in these engines, the valves in the cylinder head will come in contact with the pistons, causing major engine damage. The recommended replacement interval for timing belts is 60,000 miles.

CAUTION On models with an air bag, wait at least 90 seconds from the time that the ignition switch is turned to the LOCK position and the battery is disconnected before performing any further work.
1.8L (Acc) And 2.0L (Aba) Engines

NOTE Do not turn the engine or camshaft with the camshaft drive belt removed. The pistons will contact the valves and cause internal engine damage.

  1. Disconnect the negative battery cable and remove the accessory drive belts, crankshaft pulley and the timing belt cover(s).
  2. Temporarily reinstall the crankshaft pulley bolt, if removed, and turn the crankshaft to Top Dead Center (TDC) of No. 1 piston. The mark on the camshaft sprocket should be aligned with the mark on the inner drive belt cover, if equipped, or the edge of the cylinder head.
  3. On 8-valve engines, the notch on the crankshaft pulley should align with the dot on the intermediate shaft sprocket. With the distributor cap removed, the rotor should be pointing toward the No. 1 mark on the rim of the distributor housing.
  4. Loosen the locknut on the tensioner pulley and turn the tensioner counterclockwise to relieve the tension on the timing belt.
  5. Slide the timing belt off the sprockets.

 

To install:



Click image to see an enlarged view Fig. Camshaft timing belt sprocket TDC alignment mark-Volkswagen 1.8L (ACC) and 2.0L (ABA) engines



Click image to see an enlarged view Fig. Align the flywheel (A) or driveplate (B) as shown for TDC alignment for cylinder No. 1-Volkswagen 1.8L (ACC) and 2.0L (ABA) engines



Click image to see an enlarged view Fig. When the No. 1 cylinder is at TDC, the ignition rotor should face the notch in the distributor housing-Volkswagen 2.0L (ABA) engine

  1. Install the new timing belt and tension the belt so that it can be twisted 90 degrees at the middle of its longest section, between the camshaft and intermediate sprockets.
  2. Recheck the alignment of the timing marks, if correct, turn the engine 2 full revolutions to return to TDC of No. 1 piston. Recheck belt tension and timing marks. Readjust as required. Tighten the tensioner nut to 33 ft. lbs. (45 Nm).
  3. Reinstall the belt cover and accessory drive belts.



NOTE When running the engine, there will be a growling noise that rises and falls with engine speed if the belt is too tight.

NOTE Do not turn the engine or camshaft with the camshaft drive belt removed. The pistons will contact the valves and cause internal engine damage.

  1. Disconnect the negative battery cable and remove the accessory drive belts, crankshaft pulley and the timing belt cover(s).
  2. Temporarily reinstall the crankshaft pulley bolt, if removed, and turn the crankshaft to Top Dead Center (TDC) of No. 1 piston. The mark on the camshaft sprocket should be aligned with the mark on the inner drive belt cover, if equipped, or the edge of the cylinder head.
  3. On 8-valve engines, the notch on the crankshaft pulley should align with the dot on the intermediate shaft sprocket. With the distributor cap removed, the rotor should be pointing toward the No. 1 mark on the rim of the distributor housing.
  4. Loosen the locknut on the tensioner pulley and turn the tensioner counterclockwise to relieve the tension on the timing belt.
  5. Slide the timing belt off the sprockets.

 

To install:

Click image to see an enlarged view Fig. Camshaft timing belt sprocket TDC alignment mark-Volkswagen 1.8L (ACC) and 2.0L (ABA) engines



Click image to see an enlarged view

Fig. Align the flywheel (A) or driveplate (B) as shown for TDC alignment for cylinder No. 1-Volkswagen 1.8L (ACC) and 2.0L (ABA) engines



Click image to see an enlarged view Fig. When the No. 1 cylinder is at TDC, the ignition rotor should face the notch in the distributor housing-Volkswagen 2.0L (ABA) engine

 

  1. Install the new timing belt and tension the belt so that it can be twisted 90 degrees at the middle of its longest section, between the camshaft and intermediate sprockets.
  2. Recheck the alignment of the timing marks, if correct, turn the engine 2 full revolutions to return to TDC of No. 1 piston. Recheck belt tension and timing marks. Readjust as required. Tighten the tensioner nut to 33 ft. lbs. (45 Nm).
  3. Reinstall the belt cover and accessory drive belts.
    NOTE When running the engine, there will be a growling noise that rises and falls with engine speed if the belt is too tight.


1.8L (AEB) Engine

  1. Note the radio security code and disconnect the negative battery cable.
  2. Place the (hood) lock carrier in the service position. For additional information, please refer to the following topic(s): Body And Trim, Service Position, Front Bumper, Hood Lock Carrier.
  3. Remove the engine accessory drive belts. For additional information, please refer to the following topic(s): General Information And Maintenance, Routing Maintenance And Tune-up.
  4. Using a 5 x 60mm bolt, secure the viscous fan pulley. Using a hex wrench, remove the viscous fan-to-pulley bolts. Remove the viscous fan assembly.
  5. Turn the engine by hand to Top Dead Center (TDC) on the firing stroke for cylinder No. 1.
  6. Remove the upper timing belt cover.



NOTE If reusing the timing belt, mark its rotational direction so it may be installed in its original position.

  1. Using the center bolt, rotate the crankshaft in the direction of engine rotation to position the No. 1 cylinder at Top Dead Center (TDC) of its compression stroke.
  2. Remove the damper pulley-to-crankshaft bolts and the damper.
  3. Remove the lower timing belt cover.
  4. Using a Torx® Wrench T45, or equivalent, loosen the timing belt tensioner, push the tensioner downward and remove the timing belt.




Click image to see an enlarged view Fig. Crankshaft pulley and camshaft sprocket alignment locations-1.8L engine



Click image to see an enlarged view

Fig. Timing belt tension adjustment-1.8L engine



Click image to see an enlarged view Fig. Timing belt tension wear limits-1.8L engine



Click image to see an enlarged view

Fig. The Top Dead Center (TDC) alignment marks for the camshaft sprocket



Click image to see an enlarged view Fig. The timing belt, tensioner and guide roller

To install:

  1. Align the camshaft sprocket timing mark with the cylinder head cover mark.
  2. Install the timing belt on the crankshaft sprocket with the arrow facing the rotational direction.
  3. Install the lower timing belt cover.
  4. Using a bolt, secure the damper/belt pulley on the crankshaft.
  5. Align the crankshaft damper/belt pulley with the housing timing mark so that the No. 1 cylinder is at TDC of its compression stroke.
  6. Install the timing belt on the camshaft sprocket and belt tensioner.
  7. Using a 2-pin Spanner Matra Tool No. V159 Wrench, or equivalent, lift (turn clockwise) the timing belt tensioner cylinder No. 1 until it is fully extended and tensioner cylinder No. 2 is raised approx. 1mm ( 3 / 8 inch); then, hand-tighten the mounting bolt.
  8. Rotate the crankshaft 2 complete rotation in the running direction.
  9. Inspect area 'A' for proper alignment with the upper edge of piston No. 2 and adjust if necessary.

    Area 'A' - adjustment OK Area 'B' - wear limit Area 'C' - re-adjust and check belt drive including tensioner for wear.



NOTE If the piston edge is located in area 'A', measurement 'D' is 25-29mm ( 31 / 32 -1 1 / 8 inches).

  1. After adjustment has been verified, secure the tensioner with a 2-pin Spanner Matra Tool No. V159 Wrench, or equivalent, and tighten the mounting bolt.
  2. Complete the damper to crankshaft installation.
  3. Using the center bolt, rotate the crankshaft 2 rotations in the direction of engine rotation until the camshaft and crankshaft marks align with their respective reference points.
  4. Install the upper timing belt cover.
  5. Install the drive belts.
  6. The balance of assembly is in reverse order of removal.
  7. Install the negative battery cable last.
  8. Test drive the vehicle.

 

  1. Disconnect the negative battery cable.
  2. Remove the necessary components to gain access to the front of the engine.
  3. Place an open-end wrench on the alternator belt tensioner and rotate it clockwise toward the alternator to release the belt-s tension. Remove the alternator serpentine drive belt and release the tensioner.
    NOTE If necessary to lock the alternator tensioner in position, align the housing holes and insert an Allen wrench into the holes to secure its movement.
  4. Using a 5 x 60mm bolt, secure the viscous fan pulley. Using a hex wrench, remove the viscous fan-to-pulley bolts. Remove the viscous fan assembly.
  5. Remove the upper timing belt cover.
    NOTE If reusing the timing belt, mark its rotational direction so it may be installed in its original position.
  6. Using the center bolt, rotate the crankshaft in the direction of engine rotation to position the No. 1 cylinder at Top Dead Center (TDC) of its compression stroke.
  7. Remove the damper pulley-to-crankshaft bolts and the damper.
  8. Remove the lower timing belt cover.
  9. Using a Torx Wrench T45, loosen the timing belt tensioner, push the tensioner downward and remove the timing belt.

    Click image to see an enlarged view

    Fig. Crankshaft pulley and camshaft sprocket alignment locations-Volkswagen 1.8L (AEB) 4-Cyl engine



    Click image to see an enlarged view

    Fig. Timing belt tension adjustment- Volkswagen 1.8L (AEB) 4-Cyl engine



    Click image to see an enlarged view

    Fig. Timing belt tension wear limits- Volkswagen 1.8L (AEB) 4-Cyl engine

 

To install:

  1. Align the camshaft sprocket timing mark with the cylinder head cover mark.
  2. Install the timing belt on the crankshaft sprocket with the arrow facing the rotational direction.
  3. Install the lower timing belt cover.
  4. Using a bolt, secure the damper/belt pulley on the crankshaft.
  5. Align the crankshaft damper/belt pulley with the housing timing mark so that the No. 1 cylinder is at TDC of its compression stroke.
  6. Install the timing belt on the camshaft sprocket and belt tensioner.
  7. Using a 2-pin Spanner Matra V159 Wrench, lift (turn clockwise) the timing belt tensioner cylinder No. 1 until it is fully extended and tensioner cylinder No. 2 is raised approx. 1mm; then, hand-tighten the mounting bolt.
  8. Rotate the crankshaft 2 complete rotation in the running direction.
  9. Inspect area -A- for proper alignment with the upper edge of piston No. 2 and adjust if necessary.
    NOTE If the piston edge is located in area -A-, measurement -D- is 0.984-1.142 in. (25-29mm).


    Area -A- - adjustment OK Area -B- - wear limit Area -C- - re-adjust and check belt drive including tensioner for wear.
  10. After adjustment has been verified, secure the tensioner with a 2-pin Spanner Matra V159 Wrench and tighten the mounting bolt.
  11. Complete the damper to crankshaft installation.
  12. Using the center bolt, rotate the crankshaft 2 rotations in the direction of engine rotation until the camshaft and crankshaft marks align with their respective reference points.
  13. Install the upper timing belt cover.
  14. Install the drive belts.
  15. Replace the remaining components by reversing the removal procedures.
  16. Install the negative battery cable last.
  17. Test drive the vehicle.


1.8L (Aeb/Atw/Awm/Awv) 4-Cylinder Engines

  1. Disconnect the negative battery cable.
  2. Remove the necessary components to gain access to the front of the engine.
  3. Place an open-end wrench on the alternator belt tensioner and rotate it clockwise toward the alternator to release the belt-s tension. Remove the alternator serpentine drive belt and release the tensioner.



NOTE If necessary to lock the alternator tensioner in position, align the housing holes and insert an Allen wrench into the holes to secure its movement.

  1. Using a 5 x 60mm bolt, secure the viscous fan pulley. Using a hex wrench, remove the viscous fan-to-pulley bolts. Remove the viscous fan assembly.
  2. Remove the upper timing belt cover.



NOTE If reusing the timing belt, mark its rotational direction so it may be installed in its original position.

  1. Using the center bolt, rotate the crankshaft in the direction of engine rotation to position the No. 1 cylinder at Top Dead Center (TDC) of its compression stroke.
  2. Remove the damper pulley-to-crankshaft bolts and the damper.
  3. Remove the lower timing belt cover.
  4. Using a Torx Wrench T45, loosen the timing belt tensioner, push the tensioner downward and remove the timing belt.

    Click image to see an enlarged view

    Fig. Crankshaft pulley and camshaft sprocket alignment locations-Volkswagen 1.8L (AEB/ATW/AWM/AWP/AWV/AWW) 4-Cyl engine



    Click image to see an enlarged view

    Fig. Timing belt tension adjustment- Volkswagen 1.8L (AEB/ATW/AWM/AWV) 4-Cyl engine



    Click image to see an enlarged view

    Fig. Timing belt tension wear limits- Volkswagen 1.8L (AEB/ATW/AWM/AWV) 4-Cyl engine

 

To install:

  1. Align the camshaft sprocket timing mark with the cylinder head cover mark.
  2. Install the timing belt on the crankshaft sprocket with the arrow facing the rotational direction.
  3. Install the lower timing belt cover.
  4. Using a bolt, secure the damper/belt pulley on the crankshaft.
  5. Align the crankshaft damper/belt pulley with the housing timing mark so that the No. 1 cylinder is at TDC of its compression stroke.
  6. Install the timing belt on the camshaft sprocket and belt tensioner.
  7. Using a 2-pin Spanner Matra V159 Wrench, lift (turn clockwise) the timing belt tensioner cylinder No. 1 until it is fully extended and tensioner cylinder No. 2 is raised approx. 1mm; then, hand-tighten the mounting bolt.
  8. Rotate the crankshaft 2 complete rotation in the running direction.
  9. Inspect area -A- for proper alignment with the upper edge of piston No. 2 and adjust if necessary.

    Area -A- - adjustment OK Area -B- - wear limit Area -C- - re-adjust and check belt drive including tensioner for wear.



NOTE If the piston edge is located in area -A-, measurement -D- is 0.984-1.142 in. (25-29mm).

  1. After adjustment has been verified, secure the tensioner with a 2-pin Spanner Matra V159 Wrench and tighten the mounting bolt.
  2. Complete the damper to crankshaft installation.
  3. Using the center bolt, rotate the crankshaft 2 rotations in the direction of engine rotation until the camshaft and crankshaft marks align with their respective reference points.
  4. Install the upper timing belt cover.
  5. Install the drive belts.
  6. Replace the remaining components by reversing the removal procedures.
  7. Install the negative battery cable last.
  8. Test drive the vehicle.

Please ACCEPT my answer so I can get credit for my work.i don't receive commission unless you do ..I'm not always going to be giving you good news,so please don't let this stand in the way of you accepting my answer.it does not cost you more money.we will still be able to communicate.. Bonuses and positive feedback are appreciated!if you are not satisfied with my answer,please do not leave bad feed back,i will gladly opt out and let another expert handle the question.if i have sent any diagrams,please print them.they will only stay on here for an hour or so.PLEASE ASK IF YOU NEED MORE HELP

Tim's Auto Repair, mechanic
Category: VW
Satisfied Customers: 12926
Experience: Have owned a repair shop for 25 yrs.
Tim's Auto Repair and 7 other VW Specialists are ready to help you

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry. Stephanie P Elm City, NC
< Last | Next >
  • I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry. Stephanie P Elm City, NC
  • used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future. David L. Richmond, TX
  • 9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much. Phil Marysville, CA
  • Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible. Charles Walnut Creek, CA
  • As a single woman, I really appreciate an excellent and affordable opinion.
    Thank you Geordie, I will not hesitate to contact justanswer in the future!
    Sue Charleston, WV
  • Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff. Jim Castleberry, FL
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
 
 
 

Meet The Experts:

 
 
 
  • vwnewton

    VW Owner,ASE Master and L1 Advanced

    Satisfied Customers:

    307
    25 years of VW obsession turned into a job, last 15 years as a VW Tech.
< Last | Next >
  • http://ww2.justanswer.com/uploads/vwnewton/2008-12-27_221405_JA_avatar.jpg vwnewton's Avatar

    vwnewton

    VW Owner,ASE Master and L1 Advanced

    Satisfied Customers:

    307
    25 years of VW obsession turned into a job, last 15 years as a VW Tech.
  • http://ww2.justanswer.com/uploads/audidoc/2008-12-23_175252_headshot.jpg VWDoc's Avatar

    VWDoc

    Independent VW Shop owner

    Satisfied Customers:

    1713
    20 years of experience working with VW's. Independent European shop owner and technician.
  • http://ww2.justanswer.com/uploads/35/350matt/2012-6-7_182356_matsavatr.64x64.jpg Matt's Avatar

    Matt

    Engineer

    Satisfied Customers:

    506
    Mechanical Engineer with 20 years experience in the auto industry, 8 yrs in formula 1 engine testing
  • http://ww2.justanswer.com/uploads/CA/carbezerk/2011-3-13_103612_SAM0048.64x64.JPG Martin's Avatar

    Martin

    auto electrical

    Satisfied Customers:

    475
    South African Trade Diploma in Auto Electrical
  • http://ww2.justanswer.com/uploads/terocoga/2009-08-17_050126_015.JPG RobJackson's Avatar

    RobJackson

    VW Mechanic

    Satisfied Customers:

    416
    Started working in VW/Audi dealership in 1999. 2009 Registered and Certified VW Tech. ASE Master
  • http://ww2.justanswer.com/uploads/TI/tim37857/2011-10-28_23053_S6301814.64x64.JPG Tim's Auto Repair's Avatar

    Tim's Auto Repair

    mechanic

    Satisfied Customers:

    397
    Have owned a repair shop for 25 yrs.
  • http://ww2.justanswer.com/uploads/RO/rodcuda/2011-7-25_224114_Donhoff1.64x64.JPG Neal's Avatar

    Neal

    VW Mechanic

    Satisfied Customers:

    391
    Shop owner and experienced in most brands.