Question about 1965 Chevrolet Corvette

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I have a true roller timing chain to install with advance and ****** keyways on the lower crank sprocket in what circumstances would you for example advance the cam position by say 2degrees? Thanks mark

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If you advance the cam 2 degrees or so it will slighyly help the low end. If you ****** the cam 2 degrees or so it will slightly help the top end by opening the valves slightly later, same as advancing the cam opens the valves slightly sooner.Best results for street driven vehicle is put it at the stock mark. Same with ignition, use the factory distributor with vacuum advance.If the car has K66 option much the better.

Posted on Oct 16, 2010

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How do I, set up timing gears & timing chain on 1966 chrysler 383 big block.


You use the "0" keyway, the others are for modified engines with aftermarket cams.

Sep 28, 2016 | Chrysler Cars & Trucks

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I am changing the timing chain in a 1993 Chevy S-10 with a 4.3L engine. I was told you have to disconnect a wire to reset it but I don't know where the wire is.


Timing Chain: Service and Repair
REMOVAL
Tools Required = Crankshaft Sprocket Puller
1. Remove the timing cover.
2. Remove the crankshaft position sensor reluctor ring.
3. Remove the camshaft sprocket bolts.
4. Remove camshaft sprocket.
5. Remove timing chain.
6. Remove the crankshaft sprocket.
7. Remove crankshaft sprocket key.

INSTALLATION
1. Install the key into the crankshaft keyway.
2. Use the crankshaft balancer installer to install the crankshaft sprocket.
3. Install the camshaft sprocket and timing chain.
4. Install camshaft sprocket bolts.
Be sure to align the camshaft and the crankshaft sprocket marks. Timing marks (Number 4 Firing).
Tighten bolts to 21 ft. lbs.
5. Align the keyway on the reluctor ring with the key in the crankshaft.
6. Install the reluctor ring onto the crankshaft until the ring is completely seated against the crankshaft sprocket.
7. Install the timing cover.

Don't know what Wire you are referring to.

Jul 30, 2013 | Cars & Trucks

1 Answer

I need a picture of the timing marks for Jeep 4.0


Timing the Cam to the Crank

There are several ways to time the cam to the crank. Be sure to check the manual before you install the timing chain or belt.

  • Some timing sprockets are properly timed when the marks face each other.
  • On others, there must be a certain number of chain links between the marks.
  • Sometimes chains have colored links that must be aligned with the marks on the sprockets.
  • Some overhead cams have a mark on the cam gear that lines up with a mark on the cylinder head when the timing mark on the damper is at the TDC mark.
Align the timing marks for the camshaft and crankshaft sprockets before removing the timing belt or chain.

If the old parts are available, carefully compare the new gears or sprockets with the old ones. Check the keyway and timing marks just in case there might have been an error made in manufacturing. Sprockets are sometimes stamped backward. Its much better to find the problem during assembly, rather than waiting until problems show up after reassembly and reinstallation.

Maintaining Valve Timing

During a valve job, it is essential to keep the timing chain or belt in place to maintain correct valve timing. Position the number one cylinder at TDC. Some overhead cam engines use a single long chain for a cam drive. The chain can be wedged against its guides with a tapered block of wood.
the chain tensioner on some ohc engines must be wedged to keep the chain in position during cylinder head removal. courtesy of nissan motors.

Some engines have a lower and upper chain. These engines do not require special attention to wedging the chain. Be sure to look for hidden head bolts and check the repair manual before removing the OHC head.

Dec 07, 2012 | 1989 Jeep Cherokee

1 Answer

Timing belt is broken is a belt or chain


chain. R&R instructions from autozone.com pasted below. let me know if you have any more questions.


REMOVAL & INSTALLATION
SOHC Engine See Figures 1, 2, 3 and 4

  1. Disconnect the negative battery cable.
  2. Remove the timing chain front cover.

During timing chain and sprocket removal, position the crankshaft 90 degrees past Top Dead Center (TDC), to make sure the pistons will not contact the valves upon assembly.
  1. Carefully rotate the crankshaft clockwise so the timing mark on the crankshaft sprocket and keyway align with the main bearing cap split line (90 degrees past TDC).
  2. Remove bolts, then remove the timing guides and tensioner.
  3. Remove the camshaft sprocket bolt, using a 7 / 8 in. (21mm) wrench to hold the camshaft. Then remove the timing chain and camshaft sprocket. Remove the crankshaft sprocket, if necessary.

To install:
  1. Inspect the chain for wear and damage. Check the inside diameter of the chain, it should be no more than 16.77 in. (426mm). Inspect the chain guides for wear or cracks and the timing sprockets for teeth or key wear. Replace components as necessary.
  2. Verify that the crankshaft is positioned 90 degrees clockwise past TDC from the keyway (keyway at 3 o'clock).
  3. Bring the camshaft up to No. 1 TDC by loosely installing the sprocket and rotating the sprocket until the timing pin can be inserted. The camshaft contains wrench flats to assist in turning the shaft. The dowel pin should be at 12 o'clock when the camshaft is at TDC and a timing pin ( 3 / 16 in. drill bit) should then install at about the 8 o'clock position.
  4. If removed, install the crankshaft sprocket, then rotate the crankshaft counterclockwise 90 degrees up to No. 1 TDC (keyway at 12 o'clock).
  5. Position the chain under the crankshaft sprocket and over the camshaft sprocket. If necessary remove the camshaft sprocket, then slide the camshaft sprocket into position with the chain already engaged. The timing chain should be positioned so that one silver link plate aligns with the reference mark on the camshaft sprocket and the other aligns with the downward tooth (at the 6 o'clock position) on the crankshaft sprocket. The letters FRT on the camshaft sprocket must face forward, away from the cylinder head and excess chain slack should be located on the tensioner side of the block.
  6. Temporarily install the timing pin to verify proper alignment of the camshaft and sprocket, then install and tighten the sprocket bolt to 75 ft. lbs. (102 Nm). Again, use a wrench on the camshaft flats to hold the shaft in position while tightening the bolt. Do not allow the camshaft retaining bolt to torque against the timing pin or cylinder head damage will result.
  7. Install the chain guides with the words FRONT facing out. Install the fixed guide first and verify the chain is snug against the guide, then install the pivot guide. Tighten the bolts to 19 ft. lbs. (26 Nm) and verify that the pivot guide moves freely.
  8. Retract the tensioner plunger and pin the ratchet lever using a 1 / 8 in. No. 31 drill bit inserted in the alignment hole at the bottom front of the component. Install the tensioner and tighten the bolts to 14 ft. lbs. (19 Nm), then remove the drill bit.
  9. Make one final check to verify all components are properly timed, then remove all timing pins.
  10. Install the timing chain front cover.
  11. Connect the negative battery cable, start the engine and check for leaks.

jturcotte_7.gif

Fig. Fig. 1: At 90 degrees past TDC, the crankshaft sprocket timing mark and keyway will align with the main bearing cap split line



jturcotte_8.gif


Fig. Fig. 2: Exploded view of the timing chain and sprocket assembly-SOHC engine


jturcotte_9.gif

Fig. Fig. 3: Insert the timing pin to ensure that the camshaft is at No. 1 TDC-SOHC engine



jturcotte_10.gif

Fig. Fig. 4: When the camshaft is at TDC, rotate the crankshaft counterclockwise 90 degrees to achieve TDC

Nov 02, 2010 | 1997 Saturn SL

1 Answer

Dont no how to set the timming and what it suppose to be


Timing Chain and Sprockets
REMOVAL & INSTALLATION




  1. Fig. 1: At 90 degrees past TDC, the crankshaft sprocket timing
    mark and keyway will align with the main bearing cap split line
    84193100.gif






    Fig. 2: Exploded view of the timing chain and sprocket
    assembly - SOHC engine
    84193101.gif






    Fig. 3: Insert the timing pin to ensure that the camshaft is at
    No. 1 TDC - SOHC engine
    84193102.gif






    Fig. 4: When the camshaft is at TDC, rotate the crankshaft
    counterclockwise 90 degrees to achieve TDC
    84193103.gif


DOHC Engine

  1. Disconnect the negative battery cable.
  2. Remove the timing chain front cover.
    NOTE: During timing chain and sprocket removal, position the
    crankshaft 90 degrees past Top Dead Center (TDC) to make sure the pistons will
    not contact the valves upon assembly.



  3. Carefully rotate the crankshaft clockwise so the timing mark on the
    crankshaft sprocket and keyway align with the main bearing cap split line.
  4. Remove the bolts, then remove the timing guides and tensioner.
  5. Remove the camshaft sprocket bolts, using a 7?8 in. (21mm) wrench
    to hold the camshaft. Then remove the timing chain and camshaft sprocket. Remove
    the crankshaft sprocket, if necessary.
    To install:

  6. Inspect the chain for wear and damage. Check the inside diameter of the
    chain, it should be no more than 23.15 in. (588mm). Inspect the chain guides for
    wear or cracks and the timing sprockets for teeth or key wear. Replace
    components as necessary.
  7. Verify that the crankshaft is positioned 90 degrees clockwise past TDC. The
    crankshaft keyway should be at 3 o'clock aligned with the main bearing cap split
    line to prevent piston and valve damage.
  8. Install the camshaft sprockets, retaining bolts and washers. Make sure the
    letters FRT on the sprockets face forward, away from the cylinder block. Use the
    wrench flats provided on the camshafts to hold the shaft and tighten the bolts
    to 75 ft. lbs. (102 Nm).
  9. Bring the camshafts up to No. 1 TDC by rotating the camshafts and sprocket
    until the dowel pins are at 12 o'clock. Install a 1?6 in. drill bit
    into the hole in the sprocket about 9 o'clock.
  10. If removed, install the crankshaft sprocket, then rotate the crankshaft
    counterclockwise 90 degree up to No. 1 TDC (keyway and sprocket timing mark at
    12 o'clock, in alignment with the block timing mark).
  11. Position the timing chain under the crankshaft sprocket and over the
    camshaft sprockets so 2 silver link plates align with the reference marks on the
    camshaft sprockets and another 2 plates align with the downward tooth (at 6
    o'clock position) on the crankshaft sprocket. Excess chain slack should be
    located on the tensioner side of the cylinder block.
  12. Verify that the crankshaft reference mark aligns with the cylinder block
    mark at 12 o'clock and that the timing pins are installed in the holes at about
    the 9 o'clock position. Remove the timing pins from the camshaft sprockets.
  13. Install the timing chain fixed guide to the right of the block face toward
    the water pump. Tighten the bolts to 21 ft. lbs. (28 Nm) and verify the chain is
    snug against the guide.
  14. Install the pivoting chain guide and check for clearance between the block
    and head. Tighten the bolt to 19 ft. lbs. (26 Nm) and verify the guide pivots
    freely.
  15. Install the 2 forward camshaft bearing caps and the upper timing chain
    guide, then tighten the retaining bolts to 124 inch lbs. (14 Nm).
  16. Retract the tensioner plunger and pin the ratchet lever using a 1?8 in. (3.18mm) No.
    31 drill bit inserted in the alignment hole at the lower front of the component.
    Install the tensioner and tighten the bolts to 14 ft. lbs. (19 Nm), then remove
    the drill bit.
  17. Make one final check to verify all components are properly timed, then
    remove all timing pins.
  18. Install the timing chain front cover.
  19. Connect the negative battery cable, start the engine and check for leaks.





    Fig. 5: Rotate the crankshaft clockwise until the timing mark
    on the crankshaft sprocket and keyway align with the main bearing cap split line

    89563pb1.jpg






    Fig. 6: Loosen the timing chain tensioner mounting bolt . . .
    89563pb4.jpg






    Fig. 7: . . . and remove the tensioner from the engine block
    89563pb7.jpg






    Fig. 8: Retract the tensioner plunger and pin the ratchet lever
    with a 1?8
    in. (3.18mm) drill bit inserted in the alignment hole
    89563pb5.jpg






    Fig. 9: Remove the mounting fasteners from both timing guides .
    . .
    89563pb8.jpg






    Fig. 10: . . . and remove the timing guides from the engine
    89563pc1.jpg






    Fig. 11: Remove the camshaft sprocket bolts, using a 7?8 in. (21mm) wrench
    to hold the camshaft
    89563pc2.jpg






    Fig. 12: Remove the timing chain and camshaft sprockets
    89563pc4.jpg






    Fig. 13: Insert the timing pins to verify that the camshafts
    are at TDC
    84193146.gif






    Fig. 14: Make sure that the silver link plates and reference
    marks are all in alignment as shown
    84193145.gif



prev.gif next.gif

Oct 07, 2010 | 1998 Saturn SL

1 Answer

2005 f250 5.4 gas need to know specs for timing a diagram would be awesome


To Install:
  1. Install balance shaft drive gear onto the left camshaft.
  2. Install the camshaft sprockets and new bolts finger tight.
  3. Using a vise, compress the timing chain tensioner plunger.
  4. Install a retaining clip on the tensioner to hold plunger IN during installation.
    marking timing chain a0038720.gif

  5. If timing chain copper links are not visible, mark 2 links on one end and 1 link on the other end to be used as timing marks.
  6. Install right and left timing chain guides. Tighten bolts to 89 in-lbs (10 Nm).
  7. Rotate the left camshaft until the timing mark is at the 12 o'clock position.
  8. Rotate the right camshaft until the timing mark is at the 11 o'clock position.
  9. Position the crankshaft using the special tool. Then remove the tool.
    Crankshaft special tool positioning n0013602.gif

  10. Install the crankshaft sprocket with flange facing forward.
    Crankshaft sprocket timing mark n0011528.gif

  11. Position lower end of left (inner) timing chain on the crankshaft sprocket. Align the copper (or marked) chain link with the timing mark on the outer flange of the crankshaft pulley. NOTE: Upper half of timing chain must be below the tensioner arm dowel.
  12. Position the left timing chain on the camshaft sprocket. The timing mark on the camshaft sprocket must be aligned between the 2 copper (or marked) chain links.
    Left camshaft sprocket timing mark a0080774.gif

  13. Place the left timing chain tensioner arm on the dowel pin and install the timing chain tensioner and bolts. Tighten bolts to 18 ft-lbs (25 Nm). NOTE: Lower half of timing chain must be above the tensioner arm dowel.
    Crankshaft sprocket timing mark a0079624.gif
  14. Position lower end of right (outer) timing chain on the crankshaft sprocket. Align the copper (or marked) chain link with the timing mark on the outer flange of the crankshaft pulley.
    Right camshaft sprocket timing mark a0041104.gif

  15. Position the right timing chain on the camshaft sprocket. The timing mark on the camshaft sprocket must be aligned between the 2 copper (or marked) chain links.
  16. Place the right timing chain tensioner arm on the dowel pin and install the timing chain tensioner and bolts. Tighten bolts to 18 ft-lbs (25 Nm).
  17. Remove the retaining clips from the right and left timing chain tensioners.
  18. Verify alignment of all timing marks.
  19. Install crankshaft sensor ring on crankshaft.
  20. Locate index mark on balance shaft and mark corresponding gear tooth with chalk.
  21. Position balance shaft on journals. NOTE: It may be helpful to use an inspection mirror to view the marks timing marks.
  22. Align the chalk mark on the balance shaft with the camshaft timing mark.
    Balance shaft bearing caps n0007112.gif

  23. Install the balance shaft bearing caps in their original locations. Follow the tightening sequence as shown in the illustration. Tighten bolts to 89 in-lbs (10 Nm).
  24. Tighten the camshaft phaser sprocket bolts in the correct sequence using 2 steps, as follows:
    • Step 1-30 ft-lbs (40 Nm)
    • Step 2-tighten an additional 90 degrees
  25. Position the crankshaft keyway in the 11 o'clock position.
  26. Lubricate and install all camshaft roller followers. WARNING
    Engine front cover replacement procedure must be completed within 4 minutes or entire procedure must be repeated. Failure to do so may result in future leaks

Oct 07, 2010 | Ford F-250 Cars & Trucks

1 Answer

I am replacing the timing chain on my 1993 saturn that has a 1.9 motor.. i need to know what the settings are.. can you please help?


Assuming you have the single overhead camshaft, there is a pin you're supposed to use to align the camshaft gear--see below diagram from autozone.com:

869f282.jpg
Obviously you could substitute a phillips screwdriver of the appropriate size for the alignment pin shown. Leave it in until you complete the chain installation.

The crankshaft pully mark goes straight up:

8dca8ab.jpg Make sure the chain is tight on the right side when the gears are in these positions and that it doesn't slip any teeth on eight gear when you apply the tensioner. I will paste the autozone instructions below.

To install:
  1. Inspect the chain for wear and damage. Check the inside diameter of the chain, it should be no more than 16.77 in. (426mm). Inspect the chain guides for wear or cracks and the timing sprockets for teeth or key wear. Replace components as necessary.
  2. Verify that the crankshaft is positioned 90 degrees clockwise past TDC from the keyway (keyway at 3 o'clock).
  3. Bring the camshaft up to No. 1 TDC by loosely installing the sprocket and rotating the sprocket until the timing pin can be inserted. The camshaft contains wrench flats to assist in turning the shaft. The dowel pin should be at 12 o'clock when the camshaft is at TDC and a timing pin ( 3 / 16 in. drill bit) should then install at about the 8 o'clock position.
  4. If removed, install the crankshaft sprocket, then rotate the crankshaft counterclockwise 90 degrees up to No. 1 TDC (keyway at 12 o'clock).
  5. Position the chain under the crankshaft sprocket and over the camshaft sprocket. If necessary remove the camshaft sprocket, then slide the camshaft sprocket into position with the chain already engaged. The timing chain should be positioned so that one silver link plate aligns with the reference mark on the camshaft sprocket and the other aligns with the downward tooth (at the 6 o'clock position) on the crankshaft sprocket. The letters FRT on the camshaft sprocket must face forward, away from the cylinder head and excess chain slack should be located on the tensioner side of the block.
  6. Temporarily install the timing pin to verify proper alignment of the camshaft and sprocket, then install and tighten the sprocket bolt to 75 ft. lbs. (102 Nm). Again, use a wrench on the camshaft flats to hold the shaft in position while tightening the bolt. Do not allow the camshaft retaining bolt to torque against the timing pin or cylinder head damage will result.
  7. Install the chain guides with the words FRONT facing out. Install the fixed guide first and verify the chain is snug against the guide, then install the pivot guide. Tighten the bolts to 19 ft. lbs. (26 Nm) and verify that the pivot guide moves freely.
  8. Retract the tensioner plunger and pin the ratchet lever using a 1 / 8 in. No. 31 drill bit inserted in the alignment hole at the bottom front of the component. Install the tensioner and tighten the bolts to 14 ft. lbs. (19 Nm), then remove the drill bit.
  9. Make one final check to verify all components are properly timed, then remove all timing pins.
  10. Install the timing chain front cover.
  11. Connect the negative battery cable, start the engine and check for leaks.

Sep 01, 2010 | Saturn L-Series Cars & Trucks

1 Answer

I need a timing chain diagram for a 2002 jeep grand Cherokee with a 4.0L engine


This is the procedure on it.


spacer.gif 2008-10-22_161446_1.thumb.gif spacer.gif spacer.gif View Full Image spacer.gif

INSTALLATION

NOTE: Assemble the timing chain, crankshaft sprocket and camshaft sprocket with the timing marks aligned Fig. 5 .
  1. Apply Mopar(TM) Silicone Rubber Adhesive Sealant to the keyway in the crankshaft and insert the key With the key in the keyway on the crankshaft, install the assembly on the crankshaft and camshaft.


spacer.gif 2008-10-22_161528_2.thumb.gif spacer.gif spacer.gif View Full Image spacer.gif

Install the camshaft sprocket retaining preload bolt and washer Fig. 6 . Tighten the preload bolt to 108 N.m (80 ft. lbs.) torque.





spacer.gif 2008-10-22_161605_3.thumb.gif spacer.gif spacer.gif View Full Image spacer.gif


  • To verify correct installation of the timing chain, turn the crankshaft to position the camshaft sprocket timing mark as shown in Fig. 7 . Count the number of chain pins between the timing marks of both sprockets. There must be 15 pins. NOTE: Installation of the timing chain with the timing marks on the crankshaft and camshaft sprockets properly aligned ensures correct valve timing. A worn or stretched timing chain will adversely affect valve timing. If the timing chain deflects more than 12.7 mm (1/2 inch) replace it. The correct timing chain has 48 pins. A chain with more than 48 pins will cause excessive slack.
  • Install the crankshaft oil slinger.
  • Replace the oil seal in the timing case cover.
  • Lubricate the tension spring, thrust pin and pin bore in the preload bolt with Mopar(TM) Engine Oil Supplement, or equivalent. Install the spring and thrust pin in the preload bolt head Fig. 6 .


    spacer.gif 2008-10-22_161701_4.thumb.gif spacer.gif spacer.gif View Full Image spacer.gif


  • Install the timing case cover and gasket.
  • With the key installed in the crankshaft keyway, install the vibration damper, washer and bolt. Lubricate and tighten the bolt to 108 N.m (80 ft. lbs.) torque.
  • Install the serpentine drive belt and tighten to the specified tension, Refer to Engine/Drive Belts, Mounts, Brackets and Accessories/Drive Belt/Service and Repair for the proper procedure.
  • Install the fan and hub (or Temporal fan) assembly. Install the shroud.
  • Connect negative cable to battery
  • Jul 16, 2010 | Jeep Grand Cherokee Cars & Trucks

    2 Answers

    Does my 2001 saturn sl 1.9l have a timing belt or chain?


    It is a chain and its not the easiest but it could be worse.It is as follows:
    1.9L SOHC Engine
    1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
    2. Drain the engine oil.
    3. Remove or disconnect the following:
      • Negative battery cable
      • Right front wheel and splash shield
      NOTE: Place a 1 in. x 1 in. x 2 in. long block of wood between the torque strut and cradle to ease removal and installation of the torque engine mount.
      • 3 right side upper engine torque axis to front cover nuts and the 2 mount to midrail bracket nuts, allowing the powertrain to rest on the block of wood
      • Drive belt, tensioner and pulley
      • Power steering pump attaching bolts and set the pump to the side with the lines still attached
      • A/C compressor from the bracket and set aside with the lines attached
      • Camshaft cover
      • Using a strap wrench or a piece of wood wedged between the damper spoke and the lower side of the engine front cover, hold the damper and remove the bolt. With a suitable 3-jaw puller and the slots cast into the damper, pull the crankshaft damper/pulley assembly from the crankshaft.
      • Install the special oil seal replacement tool SA9104E, to be sure the front crankshaft timing sprocket is held firmly in place and prevent guide damage. Install with the flat side towards the crankshaft sprocket.
      • Remove or disconnect the following:
        • Front 4 oil pan bolts and cut the seal away from the front cover
        • Front cover bolts and carefully pry the cover away from the cylinder block at the pry location tabs, which are provided. Remove the cover from under the hood or through the wheel well
        • Front cover oil seal from the cover
        NOTE: During timing chain and sprocket removal, position the crankshaft 90 degrees past Top Dead Center (TDC), to be sure the pistons will not contact the valves upon assembly.
      • Carefully rotate the crankshaft clockwise so the timing mark on the crankshaft sprocket and keyway align with the main bearing cap split line (90 degrees past TDC).
      • Remove or disconnect the following:
        • Timing guides and tensioner
        • Camshaft sprocket bolt, using a 7⁄8 in. (21mm) wrench to hold the camshaft. Then, remove the timing chain and camshaft sprocket
        • Crankshaft sprocket
        To install:
      • Inspect the chain for wear and damage. Check the inside diameter of the chain, it should be no more than 16.77 in. (426mm). Inspect the chain guides for wear or cracks and the timing sprockets for teeth or key wear. Replace components as necessary.
      • Verify that the crankshaft keyway is positioned 90 degrees clockwise past TDC (keyway at 3 o'clock). The keyway should align with the split between the bearing cap and engine block.
      • Bring the camshaft up to No. 1 TDC by loosely installing the sprocket and rotating the sprocket until the timing pin can be inserted. The camshaft contains wrench flats to assist in turning the shaft. The dowel pin should be at 12 o'clock when the camshaft is at TDC.
      • Install the crankshaft sprocket, then rotate the crankshaft counterclockwise 90 degrees up to No. 1 TDC (keyway at 12 o'clock).
      • Position the chain under the crankshaft sprocket and over the camshaft sprocket. The timing chain should be positioned so that 1 silver link plate aligns with the reference mark on the camshaft sprocket and the other aligns with the downward tooth (at the 6 o'clock position) on the crankshaft sprocket. The letters FRT on the camshaft sprocket must face forward, away from the cylinder head and excess chain slack should be located on the tensioner side of the block.
      • Install or connect the following:
        • Timing pin to verify proper alignment of the camshaft and sprocket. Torque the sprocket bolt to 75 ft. lbs. (102 Nm).
        NOTE: Do not allow the camshaft retaining bolt to torque against the timing pin or cylinder head damage will result.
        • Timing chain guides with the words FRONT facing out. Install the fixed guide first and verify the chain is snug against the guide, then install the pivot guide. Torque the bolts to 19 ft. lbs. (26 Nm) and verify that the pivot guide moves freely
        • Retract the tensioner plunger and pin the ratchet lever using a 1⁄8 in. No. 31 drill bit inserted in the alignment hole at the bottom front of the component
        • Tensioner. Torque the bolts to 14 ft. lbs. (19 Nm), then remove the drill bit
      • Make one final check to verify all components are properly timed, then remove all timing pins.
      • Install or connect the following:
        • Seat a new front cover oil seal using the installation tool with a press
        • If the engine front cover casting or assembly is replaced, the 3 torque axis mount studs should also be replaced. Torque the new studs to 19 ft. lbs. (25 Nm).
    1.9L (DOHC) Engine
    1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
    2. drain the engine oil.
    3. Remove or disconnect the following:
      • Negative battery cable
      • Right front wheel and splash shield
      NOTE: Place a 1 x 1 x 2 in. (25 x 25 x 51mm) block of wood between the torque strut and cradle to ease removal and installation of the torque engine mount.
      • 3 right side upper engine torque axis to front cover nuts and the 2 mount to midrail bracket nuts, allowing the powertrain to rest on the block of wood
      • Drive belt, tensioner and pulley
      • Power steering pump attaching bolts and set the pump to the side with the lines still attached
      • A/C compressor from the bracket and set it to the side with the lines attached
      • Camshaft cover
    4. Using a strap wrench or a piece of wood wedged between the damper spoke and the lower side of the engine front cover, hold the damper and remove the bolt. With a suitable 3-jaw puller and the slots cast into the damper, pull the crankshaft damper/pulley assembly from the crankshaft.
    5. Install the special oil seal replacement tool SA9104E or equivalent, to be sure the front crankshaft timing sprocket is held firmly in place and prevent guide damage. Install with the flat side towards the crankshaft sprocket.
    6. Remove or disconnect the following:
      • Front 4 oil pan bolts and cut the seal away from the front cover
      • Front cover bolts and carefully pry the cover away from the cylinder block at the pry location tabs, which are provided. Remove the cover from under the hood or through the wheel well
      • Front cover oil seal from the cover
      NOTE: During timing chain and sprocket removal, position the crankshaft 90 degrees past top Dead Center (TDC), to be sure the pistons will not contact the valves upon assembly.
    7. Carefully rotate the crankshaft clockwise so the timing mark on the crankshaft sprocket and keyway align with the main bearing cap split line (90 degrees past TDC).
      • Timing guides and tensioner
      • Camshaft sprocket bolt, using a 7⁄8 in. (21mm) wrench to hold the camshaft. Then, remove the timing chain and camshaft sprocket
      • Crankshaft sprocket

    Nov 30, 2009 | 2001 Saturn SL

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