Section 8.2 Drive Belts

Section 8.2
Drive Belts

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

Section 8.2.1
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 "Poly-V Belt Removal" .
    Click to see this graphic in a separate window

     1. Belt Tensioner with Tensioning Pulley‪

     3. Poly-V Belt‪

     2. T-Handle with Socket-Wrench Bit‪

    Figure 1. 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

Section 8.2.2
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.

Section 8.2.3
Belt Tensioner Removal

Remove belt tensioner as follows:‪

  1. Remove the poly-V belt from the alternator and coolant-pump pulleys. Refer to "8.2.1 Poly-V Belt Removal" .
  2. Remove the hex head bolt and belt tensioner from the oil-filter housing. See Figure "Belt Tensioner Removal" .
    Click to see this graphic in a separate window

     1. Belt Tensioner with Tensioning Pulley‪

     2. Oil-Filter Housing‪

    Figure 2. Belt Tensioner Removal

Section 8.2.4
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 N·m (37 lb·ft).
  3. Install the poly-V belt on the alternator and coolant-pump pulleys. Refer to "8.2.2 Poly-V Belt Installation" .


MBE 900 Service Manual - 6SE414
Generated on 10-13-2008