Detroit Diesel MBE 4000 Service Manual page 487

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[a] Place a socket wrench on the tensioner pulley bolt.
[b] Pull the socket wrench (swivel the tensioner pulley counterclockwise) to remove the
tension from the belt.
[c] Hold the tensioner pulley in this position for the next step.
3. Remove the drive belt from the fan and idler pulleys. Be careful not to kink, stretch, or
otherwise damage the belt. See Figure 8-4.
1. Crankshaft Pulley
2. Idler Pulley #1
3. Fan Belt Tensioner
Figure 8-4
4. Release the tensioner pulley.
5. Inspect the fan 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
fan pulley
belt tensioner
tensioner pulley
idler pulley
8.1.4
Install the fan belt as follows:
All information subject to change without notice.
6SE412 0403 Copyright © 2004 DETROIT DIESEL CORPORATION
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Fan Belt Removal
Fan Belt Installation
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4. Fan Belt
5. Fan Pulley
6. Idler Pulley #2
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MBE 4000 SERVICE MANUAL
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8-7