Alternator Belt

This procedure covers removal and installation of the serpentine alternator belt on the 1992 Dodge Viper 8.0L V10 engine, including belt tensioner release and routing verification.

Warnings

Tools required

Parts

• Serpentine alternator belt × 1 — Gates K060850 or equivalent 85" 6-rib belt

Preparation

1. Park vehicle on level surface and apply parking brake.
2. Allow engine to cool completely if recently operated.
3. Open hood and secure with prop rod.
4. If available, photograph or diagram existing belt routing path around all pulleys before removal for installation reference.

Procedure

1. 1

   Locate belt routing diagram
   Verify belt routing by locating the underhood belt routing diagram, typically affixed to the radiator support or hood underside. If diagram is missing or illegible, document the existing belt path around the water pump, alternator, power steering pump, crankshaft, idler pulley(s), and automatic tensioner before proceeding. The V10 uses a single serpentine belt for all accessories.
2. 2

   Identify belt tensioner location
   Locate the automatic belt tensioner assembly on the engine. The tensioner is a spring-loaded pulley assembly with a square drive socket opening (or hex boss) in the tensioner arm for breaker bar/wrench insertion. Verify the actual location and the direction of tensioner rotation required for belt release against the vehicle-specific service manual before applying force.
3. 3

   Release belt tension
   Insert the appropriate breaker bar or serpentine belt tool into the drive opening on the tensioner arm. Rotate the tensioner in the release direction (confirm per service manual) to compress the spring and relieve belt tension. Maintain steady pressure throughout belt removal.
4. 4

   Remove belt from pulleys
   While maintaining tension on the breaker bar, lift the serpentine belt off the alternator pulley or nearest accessible pulley. Once belt is released from one pulley, slowly release tensioner pressure and allow the tensioner to return to its relaxed position. Remove belt from remaining pulleys by threading it through the engine bay, working carefully around hoses and wiring.
5. 5

   Inspect pulleys and tensioner
   With belt removed, inspect all pulley surfaces for glazing, scoring, or damage. Spin each pulley by hand to check for bearing roughness or noise. Inspect the tensioner pulley for smooth operation and verify the tensioner arm moves freely through its full range without binding. Check tensioner spring tension by manually compressing the arm; it should provide firm resistance and return smoothly to extended position.
6. 6

   Route new belt around pulleys
   Beginning with the crankshaft pulley, route the new serpentine belt around all pulleys following the documented routing path or diagram, leaving the alternator pulley or tensioner pulley for last installation. Ensure the belt ribs are properly seated in all pulley grooves before tensioner engagement. Verify belt is routed correctly with proper engagement on smooth vs. ribbed pulley surfaces.
7. 7

   Engage belt on final pulley
   Insert the breaker bar or serpentine belt tool into the tensioner arm socket and rotate in the release direction (per service manual) to relieve tension. While holding the tensioner in the released position, guide the belt onto the final pulley (typically alternator or tensioner pulley). Verify belt is fully seated in all pulley grooves, then slowly release the breaker bar to allow tensioner to apply proper tension to the belt.
8. 8

   Verify belt installation
   Visually inspect the entire belt path to confirm proper seating in all pulley grooves with no twists or misalignment. Check that the belt runs centered on all pulleys without riding on pulley edges. Manually rotate the crankshaft pulley clockwise (using a socket on the crankshaft bolt) for 2-3 complete revolutions to ensure smooth operation and proper belt tracking.

Reassembly

1. No additional reassembly required for this procedure.

Verification

• Start engine and observe belt operation at idle. Belt should run smoothly without slipping, squealing, or unusual vibration.
• Check that all accessories (alternator, power steering, water pump) are functioning normally.
• Visually confirm belt remains centered on all pulleys during engine operation.
• Listen for any abnormal noises from pulleys or tensioner that might indicate improper installation or component wear.
• Verify battery charging system operation by observing voltage gauge or battery warning light behavior after several minutes of operation.

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