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MBE 900 DRIVE BELTS

Perform the following procedures for removal and installation of the drive belts and belt tensioner. ‪

Poly-V Belt Removal

Remove the poly-V belt as follows: ‪

  1. Place a T-handle and socket-wrench bit on the tensioning pulley bolt. See the insert in Figure .

    1. Belt Tensioner with Tensioning Pulley ‪

    3. Poly-V Belt ‪

    2. T-Handle with Socket-Wrench Bit ‪

    Poly-V Belt Removal

  2. Lift the T-handle (swivel the tensioning pulley clockwise) to remove the tension from the poly-V belt. Hold the tensioning pulley in this position for the next step.
  3. Remove the poly-V belt from the alternator and coolant-pump pulleys. Be careful not to kink, stretch, or otherwise damage the belt.
  4. Lower the T-handle to return the tensioning pulley to its original position. Remove the socket-wrench bit from the pulley bolt.
  5. Inspect the poly-V belt for nicks, wear, or other damage. Replace the belt if necessary.
  6. Inspect the following parts and replace any that are damaged or worn:
    • Vibration Damper
    • Alternator Pulley
    • Coolant-Pump Pulley
    • Belt Tensioner
    • Tensioning Pulley

Poly-V Belt Installation

Install the poly-V belt as follows: ‪

  1. Fit the poly-V belt on the belt pulleys. Be careful not to kink, stretch, or otherwise damage the belt. Do not fit the belt onto the tensioning pulley yet.
  2. Place the T-handle and socket-wrench bit on the tensioning pulley bolt. Swivel the tensioning pulley clockwise to overcome the spring tension.
  3. With the belt in place, lower the T-handle to return the tensioning pulley to its original position, allowing the belt tensioner to automatically put the correct tension on the belt.
  4. Remove the socket-wrench bit from the pulley bolt.
  5. Check the poly-V belt to make sure it is in the correct position and properly aligned on the pulleys.

Belt Tensioner Removal

Remove belt tensioner as follows: ‪

  1. Remove the poly-V belt from the alternator and coolant-pump pulleys. Refer to section .
  2. Remove the hex head bolt and belt tensioner from the oil-filter housing. See Figure 42710 .

    1. Belt Tensioner with Tensioning Pulley ‪

    2. Oil-Filter Housing ‪

    Belt Tensioner Removal

Belt Tensioner Installation

Install the belt tensioner as follows: ‪

  1. Align the pins on the belt tensioner with the holes in the oil-filter housing.
  2. Install the belt tensioner on the oil-filter housing and secure in place with the hex head bolt. Tighten the bolt 50 Nm (37 lbft).
  3. Install the poly-V belt on the alternator and coolant-pump pulleys. Refer to section .