Question about Gates 2004 Chevrolet Optra Belt Tensioner

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How to repair cranshaft pulley on 04 0ptra

The pulley has fallen off. the belt is off. How is the crankshaft pulley attached to the crankshaft? I haven't been able to jack the car up to remove to plastic inspection cover so it's impossible to see the pulley properly. Any help will be much appreciated.

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1 Answer

Where cranshaft sensor location


Crankshaft Position Sensor is on the engine. Typically near the front or belt/pulley area. 9 out of 10 times near the bottom of the engine very near the largest pulley on the motor. Some vehicles( less than a third) have more than one. The 2nd would usually be located near the coil/coil pack(s) of ignition system.

Apr 24, 2014 | 2000 Jaguar S-Type

1 Answer

Serpentine belt 1999 chevy malibu is slipping off cranshaft pulley


Make sure that the belt is fully seated in ALL pulleys, if it still slips off, then you have a pully that is bent, or out of alignment.

Dec 04, 2013 | 1999 Chevrolet Malibu

1 Answer

How do i get the crankshaft pulley off


The crankshaft pulley is "press-fitted" onto the crankshaft. A special cranshaft pulley remover tool is required to remove it. (See picture below)

Many parts retailers like AutoZone and Advance Auto have this tool available as a "loaner" or "rental".
The loaner programs usually require you to pay the purchace price of the tool up front, then will give you a FULL refund when you return the tool to the store.


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Oct 11, 2011 | 2001 Dodge Stratus

1 Answer

Can you tell me where I can print instructions for free to help me change my timing belt in a 93 ford festiva


Here are the instructions for removing the timing cover, and for replacing the timing belt. If this is helpful, please click my accept button! Thanks!
Remove accessory drive belts.
  1. Remove water pump pulley to pump hub attaching bolts, then the pulley.
  2. Remove right inner fender panel to gain access to crankshaft pulley.
  3. Remove outer crankshaft pulley attaching bolts, then the outer stiffener/spacer and outer pulley
  4. Remove inner stiffener/spacer, attaching screws, inner pulley and baffle plate.
  5. Remove attaching bolts, then the upper and lower timing covers.
  6. Reverse procedure to install. When installing crankshaft pulley, ensure curved lip on baffle plate and deep recess of inner pulley face outward

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  1. Remove timing belt covers as outlined previously.
  2. Remove timing belt tensioner pulley attaching bolt, then the tensioner pulley, spring and spring cover
  3. If reusing old belt, mark direction of rotation on belt to aid installation.
  4. Remove timing belt from crankshaft and camshaft sprockets.
  5. Check crankshaft and camshaft sprockets, tensioner pulley and timing belt for wear or damage. Replace components as necessary.
  6. Align camshaft and crankshaft sprocket timing marks with marks on cylinder head and oil pump housing
  7. Install timing belt. If reusing old belt, ensure belt is installed so that direction of rotation mark made during removal is positioned correctly.
  8. Install spring and spring cover onto tensioner pulley, then install pulley and attaching bolt. Do not tighten bolt at this time.
  9. Install tensioner spring onto anchor, then tighten pulley attaching bolt to torque listed at the end of this section.
  10. Reinstall timing belt covers.

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This photo shows timing marks.


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Jul 14, 2010 | 1993 Ford Festiva

1 Answer

The main pully (i think its the crankshaft one) doesnt lign up with all the other ones therfore the belt broke! anything is helpfull


wow, if the main crankshaft pulley is off, that's pretty hard to do.

but, I'll take your word for it.

I think that it's more likely that the accessories attached to the engine are not aligned to the crankshaft pulley.

Look for problems with the serpentine tensioner pulley, if you have the serpentine belt.

Look for stuck pulleys as well, that can make a belt break as the crankshaft forces the belt to try to turn the stuck pulley.

Good luck on this repair.

Jun 29, 2010 | 2001 Chevrolet Malibu

2 Answers

I need 2004 Hyundai XG350L Service/repair Manual


3.5L Engine

Remove or disconnect the following:
  1. Negative battery cable
  • Engine coolant
  • Water pump pulley bolts
  • Alternator bolt, loosen only
  • Water pump pulley and drive belts
  • Crankshaft pulley
  • Timing belt cover(s)
  1. Turn the crankshaft until the timing marks on the camshaft sprocket and cylinder head are aligned.
  2. Loosen the timing belt tensioner bolt and turn the tensioner counterclockwise as far as it will go. Tighten the adjusting bolt.
  3. Mark the timing belt with an arrow showing direction of rotation.
  4. Remove the timing belt.
  5. If defective, remove the timing belt tensioner.

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Timing belt sprocket alignment mark positioning for belt removal and installation—3.5L engine

To install:
  1. If necessary, install the timing belt tensioner.
  2. Attach the top of the tensioner spring on the engine coolant pump pin. Ensure the hook on the pin is facing down and the hook on the tensioner is facing away from the engine
  3. Rotate the timing belt tensioner to the extreme counterclockwise position. Temporarily lock the tensioner in place.
  4. Align the timing marks of the camshaft and crankshaft sprockets.
  5. Install the timing belt on the crankshaft sprocket, then onto the rear camshaft sprocket.
  6. Route the belt to the coolant pump pulley, the front camshaft sprocket and the timing belt tensioner.
  7. Apply force counterclockwise to the rear camshaft sprocket with tension on the tight side of the belt and check that timing marks are aligned.
  8. Loosen the tensioner bolt 1–2 turns and tighten the timing belt to a tension of 57–84 lbs. (260–380 N).
  9. Turn the crankshaft two turns clockwise.
  10. Readjust the sprocket timing marks and tighten the tensioner bolts.
  11. Install the timing belt covers.
  12. Install the crankshaft pulley and tighten to 108–116 ft. lbs. (150–160 Nm).
  13. Install or connect the following:
    • Timing belt cover(s)
    • Crankshaft pulley
    • A/C compressor belt
    • Water pump pulley
    • V belt
    • Negative battery cable
    • Engine with coolant

Feb 10, 2010 | 2004 Hyundai XG350

1 Answer

I replaced the timing belt , Need to know where the mark is for cranshaft?


It should be on the pulley on the end of the crankshaft, should indicate zero on the index mark on the pulley

Aug 22, 2009 | 1990 Dodge Spirit

1 Answer

Crankshaft pulley wabbles a/c belt makes noise is pulley loose or cranshaft crooked or what?


sounds like the main bearing drop the pan and inspect for dips in the bearings

Jun 05, 2009 | 1999 Chrysler Concorde

1 Answer

Serpentine belt slips off idler pulley


The A/C pully is supposed to spin freely until the AC is activated to run.. The cranshaft pully does not. Replace the tensioner pully. The belt has to fit in between the grooves on the pullys.

Apr 05, 2009 | 1994 GMC Suburban

1 Answer

Cylinder head removal


IF YOUR ENGINE IS A 3.0 V6 3VZ-E YOU REMOVE AIR INTAKE PIENUM,AND ALL SURROUNDING COMPONENTS REMOVE THE FUEL RAIL THE INJECTORS ATTACHED ,REMOVE INTAKE MANIFOLD,THEN YOUR EXHAUST CROSSOVER PIPE,EXHAUST MANIFOLDS REMOVE ALL BELT'S AND PULLEYS ,TIMING COVER .....BEFORE REMOVING YOUR CRANSHAFT PULLEY ,ALIGNMENT YOUR TIMING MARKS ,ON CAMSHAFT TIMING PULLEY LT,RT ,CRANKSHAFT TIMING PULLEY,THEN REMOVE TIMING BELT TENSIONER ,REMOVE ALL CAM SHAFTPULLEY'S AND CRANKSFT . REMOVE DISTRIBUTOR.REMOVE HEADCOVERS,CAMSHAFT,THEN YOU COULD GET TO THE HEAD BOLTS.

Apr 02, 2009 | 1993 Toyota Pickup

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