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Volvo Penta — Drive belts. Inspection/adjustment

Adjustments · Engine, general

From a Volvo Penta operator's manual covering: EDC 4, TAD722GE, TD520GE, TD720GE. Check it applies to your exact model before use.

Applies to: Volvo Penta TAD722GE, Volvo Penta TD520GE, Volvo Penta TD720GE

Before you start

  • TD420VE, TAD420VE and TAD620VE fan belts have automatic tensioner and need no adjustment

Procedure

  1. Inspect and adjust after operation when belts are hot
  2. Loosen the screws (A) before tensioning the alternator belts
  3. Adjust so belts can be pressed down about 10 mm between pulleys
  4. Change worn belts which operate in pairs together
  5. Check condition of drive belts, change as necessary

Specs & values

  • Belt deflection about 10 mm (3/16 in)

Source: Volvo Penta operator's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.

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