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RICK
RICK, ASE Certified Technician
Category: Car
Satisfied Customers: 426
Experience:  28 YEARS GM DEALERSHIP EXPERIENCE, JUST A FEW TESTS BEFORE GM WORLD CLASS STATUS
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99 catera: up timing..crankshaft belt drive should be at 6..tdc

Customer Question

setting up timing on 99 catera. my all data&various other quality ref. materials state that hash mark on crankshaft belt drive should be at 6-.oclock for#1cyl. to be at TDC. the passenger side front cylinder? when my mark is at 6-oclock my piston is at the bottom of the bore. i've set the cams to this position&cranked engine. no compression #s13&5 #s24&6 180psi.no bent valves yet. i have special tool kit for catera 3.0litre.
Submitted: 5 years ago.
Category: Car
Expert:  RICK replied 5 years ago.

hiCustomer,

this is what i have...adustment and replacement

If you find my help useful, please accept it so that I can get credit for it. Thanks for using JustAnswer.com and please let me know if I can be of further assistance. Positive feedback and bonuses are greatly appreciated. Happy Holidays.....Rick

 

Timing Belt Adjustment Checking

  • Tools Required
  • J 42069 Timing Belt Alignment Kit
  • J 42098 Crank Hub Torx Socket

Important: The following steps are the continuation of Timing Belt Replacement and must not be performed as a stand-alone operation.

It is not uncommon to make several repeated adjustments and engine revolutions to achieve the proper timing belt alignment set points.

Important: Whenever timing belt adjustment is necessary, always start with, and adjust, camshafts 3 and 4 first.

  1. Apply the J 42069-20 to camshaft gears 3 and 4.
  2. Inspect the relationship of the marks on the camshaft gears to the marks on the J 42069-20. They must match exactly, if not, timing belt adjustment is required.
  3. Apply the J 42069-20 to camshaft gears 1 and 2.
  4. Inspect the relationship of the marks on the camshaft gears to the marks on the J 42069-20. They must match exactly, if not, timing belt adjustment is required.
  5. Continue to the next applicable procedure. Marks on Camshaft Gears 3 and 4 Align to the LEFT of J 42069-20
  1. Loosen the timing belt idler pulley for camshaft gears 3 & 4.
  2. Use the J 42069-40 to turn eccentric on the idler pulley COUNTERCLOCKWISE until the marks on the camshaft gears and on the J 42069-20 are in alignment (the high point of the idler pulley eccentric will be in approximately the 12 o'clock position).
    • Tighten the timing belt idler pulley bolt, while holding the eccentric in place with the J 42069-40 to prevent movement, to 40 Nm (30 ft. lbs.) .
  1. Remove the J 42069-10 and the J 42069-20.
  2. Turn the crankshaft in the engine rotational direction two revolutions with the J 42098. Stop at 60 degrees Before Top Dead Center (BTDC) .
  3. Install the J 42069-10 to the crankshaft drive gear with the knurled bolt.
  4. Use the J 42098 to carefully turn the crankshaft until the lever of the J 42069-10 firmly contacts the water pump pulley flange.
  5. Secure the moveable lever of the tool to the water pump pulley flange.
  6. Install the J 42069-20 to camshaft gears 3 & 4.
  7. Inspect the alignment of the marks on the camshaft gears in reference to the marks on the J 42069-20.
  8. Repeat the procedure again if the marks do not align.
  9. If camshaft gears 3 and 4 are properly aligned, continue checking the timing belt adjustment of camshaft gears 1 & 2. Make necessary corrections as outlined further on in this article .
  10. AFTER all applicable camshaft gear adjustments are made, set the final timing belt tensioner as outlined in Timing Belt Tensioner Adjustment at the end of this procedure. Marks on Camshaft Gears 3 and 4 Align to the RIGHT of J 42069-20
  1. Loosen the timing belt idler pulley for camshaft gears 3 & 4.

  1. Slacken the timing belt by turning the eccentric on the idler pulley CLOCKWISE with the J 42069-40 until the marks on the camshaft gears and the marks on the J 42069-20 are in alignment (the high point of the idler pulley eccentric will be in approximately the 12 o'clock position).
    • Tighten the timing belt idler pulley bolt, while holding the eccentric in place with the J 42069-40 Adjustment Wrench to prevent movement, to 40 Nm (30 ft. lbs.) .
  1. Remove the J 42069-10 and the J 42069-20.
  2. Turn the crankshaft in the engine rotational direction two revolutions with the J 42098. Stop at 60 degrees BTDC.
  3. Install the J 42069-10 to the crankshaft drive gear with the knurled bolt.
  4. Use the J 42098 to carefully turn the crankshaft until the lever of the J 42069-10 firmly contacts the water pump pulley flange.
  5. Secure the moveable lever of the tool to the water pump pulley flange.
  6. Install the J 42069-20 to camshaft gears 3 & 4.
  7. Inspect the alignment of the marks on the camshaft gears in reference to the marks on the J 42069-20.
  8. Repeat the procedure again if the marks do not align.
  9. If camshaft gears 3 and 4 are properly aligned, continue checking the timing belt adjustment of camshaft gears 1 and 2.
  10. AFTER all applicable camshaft gear adjustments are made, set the final timing belt tensioner as outlined in Timing Belt Tensioner Adjustment at the end of this procedure. Marks on Camshaft Gears 1 and 2 Align to the LEFT of J 42069-20
  1. Loosen the timing belt idler pulley for camshaft gears 1 & 2.

  1. Use the J 42069-40 to turn eccentric on the idler pulley COUNTERCLOCKWISE until the marks on the camshaft gears and on the J 42069-20 are in alignment (the high point of the idler pulley eccentric will be in approximately the 9 o'clock position).
    • Tighten the timing belt idler pulley bolt, while holding the eccentric in place with the J 42069-40 to prevent movement, to 40 Nm (30 ft. lbs.) .
  1. Remove the J 42069-10 and the J 42069-20.
  2. Turn the crankshaft in the engine rotational direction two revolutions with the J 42098.Stop at 60 degrees BTDC.
  3. Install the J 42069-10 to the crankshaft drive gear with the knurled bolt.
  4. Use the J 42098 to carefully turn the crankshaft until the lever of the J 42069-10 firmly contacts the water pump pulley flange.
  5. Secure the moveable lever of the too[ to the water pump pulley flange.
  6. Install the J 42069-20 to camshaft gears 1 & 2.
  7. Inspect the alignment of the marks on the camshaft gears in reference to the marks on the J 42069-20.
  8. Repeat the procedure again if the marks do not align.
  9. If camshaft gears 1 and 2 are properly aligned, set the final timing belt tensioner as outlined in Timing Belt Tensioner Adjustment at the end of this procedure. Marks on Camshaft Gears I and 2 Align to the RIGHT of J 42069-20
  1. Loosen the timing belt idler pulley for camshaft gears 1 & 2.

  1. Slacken the timing belt by turning the eccentric on the idler pulley CLOCKWISE with the J 42069-40 until the marks on the camshaft gears and the marks on the J 42069-20 are in alignment (the high point of the idler pulley eccentric will be in approximately the 9 o'clock position).
    • Tighten the timing belt idler pulley bolt, while holding the eccentric in place with the J 42069-40 to prevent movement, to 40 Nm (30 ft. lbs.) .
  1. Remove the J 42069-10 and the J 42069-20.
  2. Turn the crankshaft in the engine rotational direction two revolutions with the J 42098. Stop at 60 degrees BTDC.
  3. Install the J 42069-10 to the crankshaft drive gear with the knurled bolt.
  4. Use the J 42098 to carefully turn the crankshaft until the lever of the J 42069-10 firmly contacts the water pump pulley flange.
  5. Secure the moveable lever of the tool to the water pump pulley flange.
  6. Install the J 42069-20 to camshaft gears 1 & 2.
  7. Inspect the alignment of the marks on the camshaft gears in reference to the marks on the J 42069-20.
  8. Repeat the procedure again if the marks do not align,
  9. If camshaft gears 1 and 2 are properly aligned, set the final timing belt tensioner as outlined in Timing Belt Tensioner Adjustment at the end of this procedure.

Timing Belt Tensioner Adjustment

Important: The following steps are the COMPLETION of installing and/or adjusting the timing belt and must not be performed as a stand alone operation.

  1. With the J 42069-10 in place locking the crankshaft at Top Dead Center (TDC) :

1.1.Loosen the timing belt tensioner eccentric locking nut.

1.2.Turn the eccentric counterclockwise to full stop, then back until the reference mark is 2-4 mm ABOVE the reference mark on the flange.

  • Tighten the timing belt tensioner locking nut to 20 Nm (15 ft. lbs.) .
  1. If the timing belt idler pulley bolts for camshafts 3 & 4 and 1 & 2 have not been previously torqued to specification:
    • Tighten the timing belt idler pulley bolts while holding the eccentric in place with the J 42069-40 to prevent movement, to 40 Nm (30 ft. lbs.) .
  1. Remove all checking tools.
  2. As a final inspection, once again rotate the engine in the clockwise direction two revolutions until reaching 60 degrees Before Top Dead Center (BTDC) .
  3. Install the J 42069-10 to the crankshaft drive gear with the knurled bolt.
  4. Use the J 42098 to carefully turn the crankshaft until the lever of the J 42069-10 firmly contacts the water pump pulley flange.
  5. Secure the moveable lever of the tool to the water pump pulley flange.
  6. Inspect the alignment of the reference marks on the camshaft gears with the notches on the rear timing belt cover, as well as, the mark on the crankshaft gear with the mark on the oil pump housing.
  7. Inspect the alignment of the marks on all four camshaft gears in reference to the marks on the J 42069-20.
  8. Repeat the procedure again if the marks do not align.
  9. Continue with the engine reassembly as outlined in Timing Belt Replacement if further timing belt adjustment is not needed.

 

 

TIMING BELT REPLACEMENT

Removal Procedure

  • Tools Required
  • J 42069 Timing Belt Alignment Kit
  • J 42098 Crank Hub Torx Socket

Battery Disconnect Caution

Caution: Before servicing any electrical component, the ignition key must be in the OFF or LOCK position and all electrical loads must be OFF unless instructed otherwise in these procedures. If a tool or equipment could easily come in contact with a live exposed electrical terminal, also disconnect the negative battery cable. Failure to follow these precautions may cause personal injury and/or damage to the vehicle or its components.

Notice: Failure to follow the described timing belt inspection and maintenance may result in a broken timing belt and cause severe engine damage.

  1. Check the cold start counter (also called a heavy duty register) with a scan tool. If there are any cold starts (below -28°C or -20°F) visually inspect the timing belt for cracks. If cracks are noted, do not reuse the belt. Replace the belt and clear the cold start counter. If the belt is okay, and is reused, do not clear the cold start counter. Notice: After timing belt is removed, never turn camshaft and crankshaft independently. If turned, interference may occur among pistons and valves, and parts related to pistons and valves may be damaged.
  2. Disconnect the negative battery cable.
  3. Remove the intake air resonator.
  4. Remove the intake plenum.
  5. Remove the front timing belt cover.

  1. Remove the harmonic balancer bolts.
  2. Remove the harmonic balancer from the crankshaft drive gear.

  1. Rotate the crankshaft clockwise to 60 degrees Before Top Dead Center (BTDC) .

  1. Install the J 42069-10 to the crankshaft drive gear with the knurled bolt.
  2. Use the J 42098 to carefully turn the crankshaft in the engine rotational direction (clockwise) until the lever of the J 42069-10 firmly contacts the water pump pulley flange.
  3. Secure the moveable lever of the tool to the water pump pulley flange. Important: Ensure that the crankshaft is not 180 degrees off TDC. The reference marks on the camshaft gears should be aligned with the corresponding notches on the rear timing belt cover at this point. If they are not aligned, the engine is 180 degrees off.

  1. Install the J 42069-1 and the J 42069-2 to the camshaft gears. If the J 42069-l or the J 42069-2 do not fit into the teeth of the camshaft gears, it may be necessary to loosen the relevant timing belt idler pulley and turn the eccentric until the J 42069-1 or the J 42069-2 can be inserted.
  2. Loosen the timing belt tensioner and idler pulleys. Important: Do not move the crankshaft while the timing belt is removed. Do not move the camshaft while the timing belt is removed. Do not remove J 42069-1 and the J 42069-2 while the belt is removed.
  3. Remove the timing belt.

Installation and Initial Adjustment Procedure

  • Tools Required
  • J 42069 Timing Belt Alignment Kit
  • J 42098 Crank Hub Torx Socket

Notice: When installing a new or used timing belt, the directional arrows on the timing belt must be matched with the rotation of the crankshaft. If this precaution is not observed, excessive wear and timing belt failure may occur.



Important: Guide marks are printed on the timing belt to aid in installation. If these marks are not identifiable, install a new belt.

Arrows are printed on the timing belt indicating the required direction of travel. When installing the timing belt, ensure the arrows are traveling in engine rotational direction (clockwise).
Install the timing belt with the engine at room temperature.
Do not crimp or bind the timing belt when handling or installing.

  1. Remove the J 42069-10.
  2. Raise and support the vehicle.
  3. Start at the crankshaft drive gear and install the timing belt with the double dash Top Dead Center (TDC) mark on the belt aligned with the marks on the oil pump and on the belt drive gear.
  4. Use the J 42069-30 to pinch the belt to prevent the teeth from jumping.
  5. Lower the vehicle.

  1. Route the timing belt through the timing belt tensioner (2).
  2. Slip the timing belt through camshaft gears 1 and 2 simultaneously (3), ensuring the dash marks on the timing belt align with the marks on the camshaft gears and the notches on the rear timing belt cover.
  3. Route the timing belt through the idler pulley for camshafts 1 and 2 (4).
  4. Route the timing belt through the idler pulley for camshafts 3 and 4 (5).
  5. Slip the timing belt through camshaft gears 3 and 4 simultaneously (6), ensuring the dash marks on the timing belt align with the marks on the camshaft gears and the notches on the rear timing belt cover.

  1. Measure the timing belt deflection between camshaft gear number 4 and the idler pulley for camshafts 3 and 4, the deflection must be no more than 1 cm (0.4 inch) .

  1. If timing belt deflection adjustment is necessary:

12.1.Turn the timing belt idler pulley eccentric for camshafts 3 and 4 COUNTERCLOCKWISE, with J 42069-40 until the high point of the eccentric is in approximately the 12 o'clock position.
12.2.Tighten the idler pulley locking bolt, while holding the eccentric with J 42069-40, until snug. The idler pulley bolt will be tightened to specifications after all final adjustments are made.

  1. Apply additional tension to the timing belt, at the idler pulley for camshafts 1 and 2, by turning the high point of the eccentric to approximately the 9 o'clock position. Then, tighten the idler pulley locking bolt, while holding the eccentric with J 42069-40, until snug. The idler pulley bolt will be tightened to specifications after all final adjustments are made.
  2. Set the initial timing belt tension:

14.1.Turn the tensioner eccentric COUNTERCLOCKWISE to full stop, then, turn the eccentric back until the reference mark is 1 mm (0.003 inch) over the flange.
14.2.Tighten the timing belt tensioner locking nut until snug, the locking nut will be tightened to specifications after all final adjustments are made.

  1. Inspect the alignment marks on the timing belt to ensure that they are aligned with the appropriate reference points on the camshaft gears, the rear timing belt cover and on the oil pump housing.
  2. Remove the J 42069-30, the J 42069-1 and the J 42069-2 locking tools from the engine.

  1. Rotate the engine, with J 42098 in the clockwise direction two revolutions stopping at 60 degrees BTDC.

  1. Install the J 42069-10 to the crankshaft drive gear with the knurled bolt.
  2. Turn the crankshaft until the lever of the J 42069-10 firmly contacts the water pump pulley flange.
  3. Secure the moveable lever of the tool to the water pump pulley flange. Important: The alignment marks on the timing belt will no longer align with the marks on the camshaft gears after one or more engine revolutions.
  4. Inspect the alignment of the reference marks on the camshaft gears with the notches on the rear timing belt cover, as well as, the mark on the crankshaft drive gear and oil pump housing.
  5. Use the J 42069-20 to inspect the alignment of camshaft gears 3 & 4.
  6. Use the J 42069-20 to inspect the alignment of camshaft gears 1 & 2. Important: The reference marks on both sets of the camshaft gears must match exactly with the marks on the J 42069-20. If timing belt adjustment is necessary, always set the adjustment for camshafts 3 and 4 first.
  7. If timing belt adjustment IS required.
  8. If timing belt adjustment IS NOT required, set the final timing belt tension:

25.1.Loosen the timing belt tensioner eccentric locking nut.

25.2.Turn the eccentric counterclockwise to full stop, then back until the reference mark is 2-4 mm (0.078-0.157 inch) ABOVE the reference mark on the flange.

  • Tighten the timing belt tensioner eccentric locking nut 20 Nm (15 ft. lbs.) .

25.3.Hold the timing belt idler pulley eccentrics in place for camshafts 1 & 2 and 3 & 4 with the J 42069-40 Adjustment Wrench.

  • Tighten both idler pulley bolts to 40 Nm (30 ft. lbs.) .

  1. Inspect the high points of the timing belt tensioner eccentrics. The idler pulley eccentric high point for Am camshafts 3 and 4 will be in approximately the 12 o'clock position. The idler pulley eccentric high point for camshafts 1 and 2 will be in approximately the 9 o'clock position.
  2. Remove the J 42069-20 and the J 42069-10.
  3. For final inspection, rotate the engine in the clockwise direction two revolutions until reaching 60 degrees BTDC.

  1. Install the J 42069-10 to the crankshaft drive gear with the knurled bolt.
  2. Turn the crankshaft until the lever of the J 42069-10 firmly contacts the water pump pulley flange.
  3. Secure the moveable lever of the tool to the water pump pulley flange.
  4. Inspect the alignment of the reference marks on the camshaft gears with the notches on the rear timing belt cover, as well as, the mark on the crankshaft gear and the mark on the oil pump housing.
  5. Use the J 42069-20 to inspect the alignment of camshaft gears 3 and 4.
  6. Use the J 42069-20 to inspect the alignment of camshaft gears 1 and 2.
  7. If the reference marks on the camshaft gears do not match exactly, adjust the timing belt.
  8. If the reference marks match exactly and further timing belt adjustment IS NOT necessary, continue with reassembly of the engine:
  9. Ensure all tools are removed from the engine.

  1. Install the harmonic balancer to the crankshaft drive gear.
    • Tighten the harmonic balancer bolts to 20 Nm (15 ft. lbs.) .
  1. Install the timing belt cover.
  2. Install the intake plenum.
  3. Install the intake air resonator.
  4. Connect the negative battery cable

Reprogramming Accessories After Battery Disconnect

  • After power loss, such as disconnecting the battery or removing battery feed fuses, the following steps must be performed to calibrate and/or program vehicle components:

Important: the engine will run extremely poor if the electronic throttle Control is not reprogrammed after a power loss.

Electronic Throttle Control (FTC):

  1. Turn the ignition switch to the RUN position. DO NOT start the engine.
  2. Leave the ignition switch in the RUN position for at least three minutes to allow the ETC to cycle and re-learn its home position.
  3. Turn the ignition switch to OFF.

Power Sunroof:

  1. Turn the ignition switch to the RUN position.
  2. Turn the power sunroof switch to the closed position. After the sunroof fully closes and the motor stops, press and hold in the switch for three seconds.
  3. Turn the power sunroof switch to the tilt position. After the sunroof reaches the tilt position and the motor stops, press and hold in the switch for three seconds.
  4. Turn the power sunroof switch to the full open position. After the sunroof is fully open and the motor stops, press and hold in the switch for three seconds.
  5. Turn the power sunroof switch to the closed position. After the sunroof fully closes and the motor stops, press and hold in the switch for three seconds.

Power Windows:

  1. Repeat these steps for each window.
  2. Turn the ignition switch to the RUN position.
  3. Press the power window switch to the down position. After the window is in the full down position3 press and hold the switch in the down position for three seconds.
  4. Press the power window switch to the up position. After the window is in the full up position, press and hold the switch in the up position for three seconds.

Heat and A/C Control Head:

  1. Turn the ignition switch to the RUN position.
  2. Simultaneously press the AUTO and OFF buttons (located on the heat and A/C control head) for at least five seconds.
  3. After initiation, the stepper motors will cycle from one stop to the other. You may hear the motors cycling while calibrating.

Power seat memory, power mirror memory and radio channel preset memory:

  1. The power seat and power mirror memory are stored in non-volatile memory in the seat memory module.Reprogramming will not be necessary after a power loss. However, if a component of the seat or mirror is replaced, the module will require programming with the scan tool.
  2. The radio channel presets are stored in non-volatile memory in the radio.Reprogramming will not be necessary after a power loss. However, if the radio is replaced, the station presets must be manually reset.
Customer: replied 5 years ago.
my problem is that the ref material you provided is the same as i already have.they all say that with mark at 6-oclock. j 42069-10 installed&seated to water pump #1 is at top dead center. my#1piston (passenger side,forward-most cyl.?). i am also an auto tech. this is baffling me severely. i am a local go-to guy on most hard to diagnose domestic vehicle troubleshooting problems in my town amongst the independent shops.
Expert:  RICK replied 5 years ago.

hi ,

i'm sorry you keep saying 6 o'clock . i don't see that?. i see 60 degrees btdc?

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