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Author archives: INA

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    The small dual-mass flywheel in the auxiliary drive

    The PYD decouples the belt drive from the rotational irregularities of the internal combustion engine, with a specifically designed arc spring isolating the belt pulley from the crankshaft. The PYD is mounted directly on the crankshaft. It usually also contains a torsional vibration damper, which is needed to limit the natural vibrations of the crankshaft …

    May
    13
    2022

    Damage Diagnostics on Chain Drives

    Cause: Poor quality oil (e.g. water or dirt in oil, used oil) Lack of lubrication (blocked oil nozzles) Very high mileage Corrosion Blocked or not working tensioners Poor running shafts (do not turn smoothly) Cause: Misalignment between the sprockets Poorly running shafts (radial stroke) Chain not running in the guide Rails mis-mounted Damaged sprocket Cause: …

    May
    9
    2022

    Damage Diagnostics on Chain Drives

    Cause: Poor quality oil (e.g. water or dirt in oil, used oil) Lack of lubrication (blocked oil nozzles) Very high mileage Corrosion Blocked or not working tensioners Poor running shafts (do not turn smoothly) Note: The damage can be detected by a well-run chain tensioner or by a test measurement of the chain pitch. Cause: …

    May
    8
    2022

    INA: Volkswagen Crafter 2.0 TDI Timing Belt

    REPXPERT Alistair Mason replaces the timing belt and coolant pump on a 2015 Volkswagen Crafter fitted with a 2.0 TDI common rail engine. The recommended service schedule for the timing belt is 80,000 miles or 4 years (which ever comes sooner), with over 55,000 Volkswagen Crafter’s currently on the UK roads today, this is a …

    April
    13
    2021

    INA: Volkswagen Crafter 2.0 TDI Timing Belt

    REPXPERT Alistair Mason replaces the timing belt and coolant pump on a 2015 Volkswagen Crafter fitted with a 2.0 TDI common rail engine. The recommended service schedule for the timing belt is 80,000 miles or 4 years (which ever comes sooner), with over 55,000 Volkswagen Crafter’s currently on the UK roads today, this is a …

    April
    13
    2021

    INA: Air bleeding of hydraulic valve lash adjustment components

    Recommendations to eliminate valve train noise Valve train noise can occur under certain operating conditions (multiple start-ups, cold start, engine initial assembly). Observe the following instructions to ensure rapid bleeding of the high-pressure chamber and reservoir of the hydraulic element: ➜ Keep the engine running at a constant speed of approx. 2,500 rpm or at …

    February
    7
    2021

    OAP Technology and Quality

    INA, inventor of the overrunning alternator pulley (OAP) warns factors and garages to beware of cheap imports and explains why it is worth investing in OE. The power and compression strokes of the internal combustion engine involve the acceleration and deceleration of the crankshaft whose rotational irregularities are transferred to the engine accessories through the …

    April
    29
    2020

    How does a water pump work?

    How does a water pump work? – The INA water pump program

    March
    25
    2020

    Service Info: Coolant pump 538 0714 10

    In the timing system of the vehicles listed here, a manual tensioner pulley is used to tension the timing belt.

    May
    27
    2019

    Service Info: Visual differences in finger follower 422 0236 10

    Two different types of finger follower.

    November
    16
    2018