Question about 1990 Mercedes-Benz 300 Diesel

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Adjust tension on fan belt

Do I need special tool for idler pulley

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  • yadayada
    yadayada May 11, 2010

    then tension is not adjustable.

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Your '90 Benz has a belt tensioner that is automatic. You just insert the correct tool to ease the tensioner pulley, (The tool is inserted into the bracket for the tensioner pulley), to the left as you're facing the car. Then slip your serpentine belt off. Reinstallation is a reversal of this process. (I believe it's to the left, don't quote me on that)

The radiator support in front, should have a diagram of how the serpentine belt goes on the pulleys.

If your serpentine belt slips, then the belt tensioner pulley assembly is bad, needs to be replaced, or the serpentine belt itself is worn out.

Posted on Apr 19, 2009

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Do you have to lock the tensioner with the special toll for a holden Astra 1.8 when changing fan belt


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You need to buy or rent the special tool necessary to release the tension on the belt. One of the idler pulleys will have a spring that keeps the tension on the belt. There is where you use the tool . There is a diagram under the hood that shows you how to position the belt around the various pulleys on the engine. Once you have the belt positioned correctly, you use the tool to move the spring loaded pulley far enough to allow the belt to be positioned so when you let go of the tool , the pulley will add tension to the belt.

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Need to replace a/c belt. cannot stretch belt over idler pully. Is special tool needed?


If you have a 3.0 engine, the idler pulley is moved to allow the belt to be replaced. There is a bolt to hold it in place and a second bolt to adjust tension.

Aug 09, 2013 | 1998 Dodge Caravan

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Kia sedona instructions to replace serpintene belt


Hi, Here is the procedure for a 2002 KIA Sedona 2.9, Engine code KJ. I I can not guarantee the followingprocedure is exactly the same as your car.

Warnings and recommendations Unless otherwise advised by the manufacturer, the following procedures are recommended: Always fit a new timing belt after removal Check the tensioner and idler pulleys; renew if necessary Never turn the engine in the direction opposite to that of normal operation Check the belt(s) for cracks, fraying, wear and oil contamination Note: The engine must be cold before timing belt adjustment Note: Avoid bending, torsion or traction General Before disconnecting the battery cable, check the audio system security code kj_t_dba_uk_6.jpg
Always check the timing marks before timing belt removal Removal Disconnect the battery Remove the radiator upper hose Remove the fuel filter unit Note: Do not disconnect the hoses carniv_j3tci_t_dba_uk_3.gif
Remove the engine mount kj_t_dba_uk_4.gif
Remove the bracket Remove the right front wheel Remove the air-conditioning drive belt Remove the ancillary drive belt Remove the ancillary drive belt tensioner Remove the coolant pump pulley Remove the crankshaft pulley Remove the timing cover(s) kj_t_dba_uk_6.jpg
Align the timing marks Loosen the tensioner kj_t_dba_uk_7.gif
Remove the tensioner Remove the timing belt Check the gearwheels, tensioner and idler pulley(s) for damage and wear Renew if necessary Installation kj_t_dba_uk_6.jpg
Check the timing marks Fit the timing belt kj_t_dba_uk_7.gif
Fit the tensioner kj_t_dba_uk_3.gif
Adjust the tensioner kj_t_dba_uk_1.gif
Align the marks on the tensioner Tighten the tensioner (23.5 Nm) Rotate the engine 2 rotations by hand kj_t_dba_uk_6.jpg
Align the timing marks kj_t_dba_uk_8.gif
Check the tensioner Repeat the procedure if required Refit the timing covers Refit the crankshaft pulley (373 - 392 Nm) Refit the coolant pump pulley (17.6 - 28.4 Nm) Fit the ancillary drive belt tensioner Fit the ancillary drive belt Refit the air-conditioning drive belt Refit the front right wheel (88 - 108) kj_t_dba_uk_4.gif
Fit the bracket (36.2 - 53.9 Nm) Refit the engine mount carniv_j3tci_t_dba_uk_3.gif
Refit the fuel filter unit Refit the radiator hose(s) Refill the cooling system Check for leaks Reconnect the battery earth cable Torque settings Tensioner: (23.5 Nm) Timing covers (6.9 - 9.8 Nm) Coolant pump pulley: (17.6 - 28.4 Nm) Special tools Special tools are not required

Jan 06, 2013 | 2004 Kia Sedona

1 Answer

How do i set the timing belt on a 1997 cadillac catera?the betl did not break but how do i make sure the belt did not move a couple of teeth.


Hi, there should be marks on the belt itslf that align with hatch marks on the timing gears. Below are the instructions for installation. From these, you should be able to verify that the belt is in time. There are also some diagrams here: http://www.2carpros.com/diagrams/cadillac/catera/1997


To install:
  1. Install the timing belt.
    1. Start at the crankshaft pulley.
    2. Install the timing belt with a double dash (TDC) mark on the belt aligned with the marks on the oil pump and belt drive gear.
    3. Pinch the belt with special tool J 42069-30 to prevent the splines from jumping.

  2. Route the timing belt through the idler pulley for camshafts 3 & 4 then route the timing belt through the camshaft gears 3 & 4.
    1. Ensure the dash marks on the timing belt align with marks on the camshaft gears and the notches on the rear timing belt cover.
    2. If necessary, loosen timing belt idler pulley or move the cam gears slightly, with J 42069-1 and 2 still in place, until the timing belt can be installed.
    3. Tighten the idler pulley locking bolt until snug. The idler pulley bolt will be tightened to specifications after the final adjustments are made.




NOTE Timing belt deflection between the camshaft gears number 4 and the idler pulley for camshafts 3 & 4, must be no more than 0.4 inch (1 CM.).

  1. If necessary, adjust the timing belt deflection by turning the timing bolt idler pulley eccentric, for camshafts 3 & 4, counter-clockwise with the special tool J 42069-40, or equivalent.

  1. Route the timing belt through the timing belt idler pulley for camshafts 1 & 2 then route the timing belt through camshaft gears 1 & 2.
    1. Ensure the dash marks on the timing belt align with the marks on the camshaft gears and the notches on the rear timing belt cover.
    2. If necessary, loosen the timing belt idler pulley or move the cam gear slightly, with J 42069-1 and 2 still in place, until the timing belt can be installed.
    3. Apply sufficient tension to the timing belt to prevent it from slipping off the gears by turning the timing belt idler pulley eccentric for camshafts 1 & 2 counter-clockwise with special tool J 42069-40 or equivalent.
    4. Tighten the idler pulley locking bolt until snug. Idler pulley bolt will be tightened to specifications after final adjustments are made.

  2. Route the timing belt through the timing belt tensioner.
  3. Apply initial tension to the timing belt by turning tensioner eccentric counter-clockwise, with a 5 mm hex wrench, until marks are set.
    1. Tighten the belt tensioner-locking nut to 15 ft. lbs. (20 Nm).

  4. Adjust the timing belt.
    1. The timing belt must be properly adjusted or engine damage may occur. Do not continue with the engine assembly procedure until the timing belt is properly adjusted.

  5. Install the timing belt cover. Tighten the timing belt cover bolts to 71 inch lbs. (8 Nm).
  6. Install the power steering pump pulley and bolts. Install the water pump pulley and bolts.
    1. Tighten the power steering pump pulley bolts and the water pump pulley bolts after the serpentine drive belt is installed.

Mar 04, 2011 | 1997 Cadillac Catera

1 Answer

Where is the tension pully on a 1993 ford taurus 3.0 motor


there is no spring tensioner on some of the 3.0 engines. See instructions below. I will paste a pic on the version that DOES have a tensioner at the bottom of this post.

3.0L Engine-Except SHO
ALTERNATOR BELT WITHOUT AUTOMATIC TENSIONER

  1. Loosen the adjusting arm and pivot bolts.
  2. Turn the alternator belt adjusting screw counterclockwise until the old belt can be removed.
  3. Remove the belt.

To install:
  1. Install the new belt over the pulleys. Check that all the V-grooves make proper contact with the pulleys.
  2. Adjust the belt tension, then tighten the adjusting arm and pivot bolts.

3.0L SHO Engine
ALTERNATOR BELT
See Figure 2
  1. Loosen the nut in the center of the idler pulley.
  2. Loosen the idler adjusting screw until the old belt can be removed, then remove the belt.

To install:
  1. Install the new belt over the pulleys in proper contact with the pulleys.
  2. Adjust the new belt to specifications as follows: Turn the idler pulley nut to the right to tighten the belt to a specification of 220-265 lbs. (980-1180 N). Torque the idler pulley nut to 25-37 ft. lbs. (34-50 Nm).

POWER STEERING AND AIR CONDITIONING BELT
See Figure 2
  1. Remove the alternator belt.
  2. Loosen the nut on the tensioner pulley.
  3. Turn the belt adjusting screw on the tensioner counterclockwise until the belt can be removed, then remove the belt.

To install:
  1. Position the new belt over the proper pulleys, making sure the V-grooves are properly seated.
  2. Install the alternator belt.
  3. Adjust the power steering and air conditioning belt to a specification of 154-198 lbs. (690-980 N) with a belt tension gauge.
  4. Adjust the alternator belt.
3.0L Engine (Except SHO) and 3.8L Engine
VEHICLES THROUGH 1993 WITH AUTOMATIC TENSIONER

See Figures 4 and 5
  1. Insert a 1 / 2 in. breaker bar into the square hole in the tensioner.

On the 3.8L engine, the tensioner has a1/2in. square hole cast into the rear of the tension arm directly behind the pulley. On the 3.0L engine, the1/2in. square hole is cast into the spring housing on the front of the tensioner.
  1. Rotate the tensioner clockwise and remove the belt.

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Fig. Fig. 5: 3.8L belt schematic-1993 shown


To install:

  1. Install the drive belt over all the pulleys, except for the alternator pulley on the 3.0L engine for vehicles through 1992, or the idler pulley for 1993 3.0L vehicles.
  2. Rotate tensioner counterclockwise and install the belt over the alternator pulley. Make sure that all the V-grooves make proper contact with the pulleys.
  3. On the 3.0L engine, install the alternator belt for vehicles through 1992.
  4. For 1993 3.0L vehicles, install the drive belt over the idler pulley.

Oct 01, 2010 | 1993 Ford Taurus

1 Answer

Change timing belt galant 04 mivec 2.4


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Timing belt “B” (balancer belt) and related components—2004–2005 Galant and 2004–2005 Lancer 2.4L engine


  1. Disconnect the negative battery cable. Remove the engine under cover.
  2. Remove the crankshaft damper pulley.
  3. Disconnect the control wiring harness connector, battery wiring harness connector and connector bracket to engine mounting insulator.
  4. Remove the harness bracket. Remove the upper timing belt cover. Remove the water pump pulley. Remove the idler pulley.
  5. Remove the auto tensioner. Remove the lower timing belt cover.
  6. Turn the crankshaft clockwise and align each timing mark to set the number one piston to TDC of its compression stroke.
  7. Remove the timing belt under cover rubber plug and then install special tool MD998738. Screw the special tool until it contacts the timing belt tensioner arm.

    NOTE The special tool must be screwed in gradually at the rate of a 30 degree turn per second. If it is screwed in all at once, the timing belt tensioner adjuster rod will not easily retract and the tool may bend.

  8. Gradually screw in the special tool and then align the timing belt tensioner adjuster rod set hole “A” with the timing belt tensioner adjuster cylinder set hole “B”.
  9. Insert a wire or pin in the set holes to lock the assembly in place. After removing the special tool, loosen the timing belt tensioner pulley mounting bolts and remove the timing belt. If the belt is being reused be sure to mark the direction of rotation (clockwise) on the belt.
  10. Remove the timing belt tensioner pulley, tensioner arm and adjuster.
  11. Remove the timing belt idler pulley. Remove the timing belt lower cover bracket. Remove the crankshaft position sensor.
  12. Remove the crankshaft pulley center bolt and washer. Remove the drive sprocket. Remove the crankshaft angle sensing blade.
  13. Remove the balancer timing belt tensioner. Remove the timing belt “B” (balancer belt) from its mounting.


284eb62.gif
Timing belt tensioner adjuster rod set hole “A” and cylinder set hole “B”—2004–2005 Galant and 2004–2005 Lancer 2.4L engine

To install:


78b2d67.gif
Belt tension checking—2004–2005 Galant and 2004–2005 Lancer 2.4L engine


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Cylinder block plug location—2004–2005 Galant and 2004–2005 Lancer 2.4L engine


bad1ef9.gif
Timing belt sprocket alignment—2002–2004–2005 Galant and 2004–2005 Lancer 2.4L engine

Feb 27, 2010 | 2004 Mitsubishi Galant

2 Answers

Can't get A/C belt around pulleys on my 01 Chevy Tracker 2.5 V6



Removal & Installation

1.6L Engine
A/C Compressor Belt
  1. Disconnect the negative battery cable.
  2. Loosen the A/C compressor mounting bolts.
  3. Pivot the A/C compressor towards the engine in order to relieve the tension on the belt.
  4. Remove the A/C compressor drive belt from the pulleys.

To install:
  1. Properly route and install the A/C compressor drive belt on the A/C compressor, the power steering (if equipped), and the crankshaft pulleys.
  2. Adjust the A/C compressor drive belt to obtain 6-9 mm (0.24-0.35 in) deflection.
  3. Tighten the A/C compressor mounting bolts to 13-20 f t. lbs. (18-28 Nm).
  4. Connect the negative battery cable.

Alternator Belt
  1. Disconnect the negative battery cable.
  2. Remove the power steering pump and the A/C compressor drive belt.
  3. Loosen the generator mounting bolts.
  4. Pivot the generator towards the engine and remove the accessory drive belt.

To install:
  1. Properly route and install the generator drive belt on the pulleys.
  2. Adjust the alternator drive belt to obtain 6-8 mm (0.24-0.32 in) deflection for a used belt or 5-6 mm (0.20-0.24 in) deflection for a new belt.
  3. Tighten the generator mounting bolts to 17 ft. lbs. (23 Nm).
  4. Install the power steering and the A/C compressor drive belt.
  5. Connect the negative battery cable.

Power Steering Pump Belt
  1. Disconnect the negative battery cable.
  2. Loosen the power steering pump mounting bolts.
  3. Pivot the power steering pump towards the engine in order to relieve the tension on the belt.
  4. Remove the power steering pump drive belt from the pulleys.

To install:
  1. Properly route and install the power steering pump drive belt on the power steering pump and the crankshaft pulleys.
  2. Adjust the power steering pump drive belt to obtain 6-9 mm (0.24-0.35 in) deflection.
  3. Tighten the power steering pump mounting bolts to 22 ft. lbs. (30 Nm).
  4. Connect the negative battery cable.

Apr 26, 2009 | 2001 Chevrolet Tracker

3 Answers

Need a timing scamatic for a 1998 ford contour 16v Zetec ct 2.0l


Installation
All Vehicles
  1. NOTE: Rotate the crankshaft clockwise.
    Rotate the crankshaft to TDC on cylinder No. 1.
6d7ac03.gif
NOTE: Cylinders No. 1 and No. 4 are at TDC when the Woodruff key points straight up.
Remove the blanking plug, completely screw in the special tool and auto-align the crankshaft to TDC.

0889b40.gif
  1. Position cylinder No. 4 to valves overlap" and install the special tool.
  2. Hold the camshafts by the hexagon using an open-ended wrench and turn them in the direction of engine rotation.
  3. Slide the special tool onto the ends of both camshafts.
6971087.gif
swp~us~en~file=ani_caut.gif~gen~ref.gif CAUTION: Do not kink the timing belt (do not bend the timing belt less than a diameter of 35 mm).
swp~us~en~file=ani_caut.gif~gen~ref.gif CAUTION: Do not rotate the crankshaft; as necessary check that it is still resting against the timing pin.
NOTE: Design with lower idler pulley shown (built up to 06/1999).
NOTE: The lug of the belt tensioner should not be hooked in the sheet metal cover during timing belt installation.
Position a new timing belt in place.
  • Starting from the crankshaft timing belt pulley and working counterclockwise, position the timing belt in place while keeping it under tension.

2907f65.gif
  1. swp~us~en~file=ani_caut.gif~gen~ref.gif CAUTION: Do not rotate the crankshaft; as necessary check that it is still resting against the timing pin.
    NOTE: Design without lower idler pulley shown (built 06/1999 onwards).
    NOTE: The lug of the belt tensioner should not be hooked in the sheet metal cover during timing belt installation.
    Position a new timing belt in place.
    • Starting from the crankshaft timing belt pulley and working counterclockwise, position the timing belt in place while keeping it under tension.
143871c.gif
  1. NOTE: Incorrect timing belt tension will cause incorrect valve timing.
  2. Pre tension the timing belt.
  3. Rotate the tensioner locating tab counterclockwise and insert the locating tab into the slot in the rear timing cover.
  4. Position the hex key slot in the tensioner adjusting washer to the 4 o'clock position.
  5. Tighten the attaching bold enough to seat the tensioner firmly against the rear timing cover, but still allow the tensioner adjusting washer to be rotated using a 6mm hex key.
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CAUTION: Tension the timing belt, working counterclockwise. Using the hex key, rotate the adjusting washer counterclockwise until the notch in the pointer is centered over the index line on the locating tab (the pointer will move clockwise during adjustment).

4e30913.gif
While holding the adjusting washer in position, tighten the bolt
NOTE: Hold the intake timing belt pulley with special tool to stop it from turning.
Tighten the timing belt pulleys.
  1. Tighten the intake camshaft timing belt pulley bolt.
  2. NOTE: Hold the exhaust camshaft by the hexagon with an open-ended wrench to stop it from turning.
    Tighten the exhaust camshaft timing belt pulley bolt.
  3. Remove the special tool.
    • Install the blanking plug.
  4. Remove the special tool.
  5. NOTE: Hold the camshaft by the hexagon with an open-ended wrench to stop it from turning.
    Tighten the exhaust camshaft to stage 2.
    1. NOTE: Turn the crankshaft two revolutions in the normal direction of rotation.
      Check the valve timing by inserting the special tool. Correct it, if necessary.
      • Screw in special tool 303-574 and make sure that the crankshaft is touching it.
      • Insert special tool 303-465 into the camshafts; if necessary loosen the timing pulleys and correct the camshaft alignment.
      • Detach the special tools.
    1. NOTE: Use a new blanking plug.
      Install the blanking plug on the exhaust camshaft pulley.

Mar 10, 2009 | 1998 Ford Contour

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