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Home >> Jaguar >> 2017 >> F-Pace First Edition >> Repair and Diagnosis >> External Pages >> Different car >> Section 244 (Accessory Drive - INGENIUM I4 2.0L Diesel -- XE (X760)) >> Accessory Drive - INGENIUM I4 2.0L Diesel >> Diagnosis And Testing >> Pinpoint Tests >> Pinpoint Test B: Accessory Drive Belt TENSIONER Tests

Pinpoint Test B: Accessory Drive Belt TENSIONER Tests

WARNING: This page is about a different car, the 2018 Jaguar XE and 2017 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.

TEST CONDITIONS 

DETAILS/RESULTS/ACTIONS 

  1. B1: ACCESSORY DRIVE BELT TENSIONER TEST 1 

    Ensure that the engine is stopped before performing this test. Failure to follow this instruction may result in personal injury.

    1. Remove the accessory drive belt in the area of the tensioner
    2. Using the correct tool, rotate the tensioner from its relaxed position through its full stroke and back to the relaxed position. Check for stick, grab and bind. Check that there is tension on the tensioner spring

    Does the tensioner move smoothly and return by spring tension?

    • Yes  : GO to B2.
    • No  : Install a new accessory drive belt tensioner
  2. B2: ACCESSORY DRIVE BELT TENSIONER TEST 2 
    WARNING: Eye protection must be worn during this test. Failure to follow this instruction may result in personal injury.
    NOTE: Excessive drive belt rideout (uneven depth of grooves in the accessory drive belt) can also cause excessive accessory drive belt tensioner movement.
    1. Start the engine
    2. Set the air conditioning to off
    3. Visually check the movement of the accessory drive belt tensioner

    Is the accessory drive belt tensioner movement erratic?

    • Yes  : Check all pulleys and pulley shafts for distortion. Rectify as necessary
    • No  : GO to B3.
  3. B3: ACCESSORY DRIVE BELT TENSIONER TEST 3 
    NOTE: Eye protection must be worn during this test. Failure to follow this instruction may result in personal injury.
    1. Set the air conditioning to on and off and visually check the movement of the accessory drive belt tensioner
    2. Increase the engine speed rapidly and visually check the movement of the accessory drive belt tensioner

    Does the accessory drive belt tensioner move when the air conditioning is cycled on and off, or when the engine speed is increased?

    • Yes  : No fault found
    • No  : Install a new accessory drive belt tensioner
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