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Hammer N4400 - Tightening Drive Belt

  • 05-05-2016 10:12am
    #1
    Swift66
    Registered Users, Registered Users 2 Posts: 139 ✭✭


    My new Hammer N4400 has been working great thus far. Thanks to Recipio and others for advice / tips.

    Quick question about adjusting the Drive Belt on a new saw / this saw.
    the manual states that:

    8.2 - Tightening / Replacing Drive Belt

    'Following the first few operating hours, the belt tension has to be controlled, as the belt will extend.
    To check the tension, press inwards onto the belt in the middle with a weight of 3-4kg.
    The belt deflection should not be more than 5-6mm.'

    I'm not too sure how I can gauge when I'm applying a force of 3-4kg.

    Can anyone advise me as to how I can check the tension is correct?

    Thanks


Comments

  • #2
    kadman
    Moderators, Home & Garden Moderators Posts: 5,126 Mod ✭✭✭✭kadman


    I suppose in very simple terms a 2kg bag of sugar would require a little over 2kg of force to push it along the worktop.:).

    Basically checking belt deflection on woodwork machinery, means press it with
    a single finger to check for slack.

    Unless your drive belt is an elastic band....which its not........applying 2 kg or 5 kg will have little difference.

    Its press it firmly, but not excessively with a single finger. Little pinky
    even, its enough:D


  • #3
    jack of all
    Registered Users, Registered Users 2 Posts: 2,376 ✭✭✭jack of all


    You could use a spring balance, even a cheap one used to measure luggage (with a stick on the hook end and the hanging loop caught with your forefinger) to gauge the tension.


  • #4
    magicbastarder
    Moderators, Category Moderators, Arts Moderators, Sports Moderators Posts: 50,895 CMod ✭✭✭✭magicbastarder


    argh. even the instruction manual is mixing up weight and mass. you'd think it would have been written by an engineer.


  • #5
    kadman
    Moderators, Home & Garden Moderators Posts: 5,126 Mod ✭✭✭✭kadman


    6mm deflection on the longest run of the belt ( I presume) is nice and firm.

    You would know if its too loose, as it would vibrate a good bit visually on startup.

    A single finger for testing the amount will be good enough, its not a mission critical setting,

    and thats the way fitters/machinists set them. I have for 45 years, you wont have any problem


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