Detroit Diesel MBE 4000 Service Manual page 486

8.1 DRIVE BELTS
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1. Fit the main drive belt on the belt pulleys. Be careful not to kink, stretch, or otherwise
damage the belt. For correct routing, see Figure 8-3. Do not fit the belt onto the tensioner
pulley yet.
1. Alternator Pulley
2. Idler Pulley
3. Coolant Pump Pulley
Figure 8-3
2. Release the tension on the main drive belt. See Figure 8-1.
3. Make sure the belt is correctly positioned for the tensioner pulley.
4. Restore the tension on the belt.
[a] Lower the socket wrench to return the tensioner pulley to its original position.
[b] Remove the socket-wrench bit from the pulley bolt.
5. Check the main drive belt to make sure it is in the correct position and properly aligned
on the pulleys.
6. Connect the batteries.
8.1.3 Fan Belt Removal
Remove the fan belt as follows:
1. Disconnect the batteries.
2. Release the tension on the fan drive belt. See Figure 8-1.
8-6
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Main Drive Belt Routing
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4. Main Drive Belt
5. Vibration Damper
6. Tensioner Pulley
6SE412 0403 Copyright © 2004 DETROIT DIESEL CORPORATION
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All information subject to change without notice.
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