slspacek Posted March 13, 2006 Share Posted March 13, 2006 Does any one have a good rule of thumb to use for checking the proper tension of the Water pump/Generator belts on a 673 Mack diesel? Thanks guys.Sean Quote Link to comment https://www.bigmacktrucks.com/topic/934-proper-belt-tensioning-endtf673/ Share on other sites More sharing options...
Freightrain Posted March 14, 2006 Share Posted March 14, 2006 I'd place a guess around 3/4" slack in the middle of belt? Something like that.I replaced mine and snugged it up, just like on a car. Not too tight, not too loose. Don't want to wipe out water pump bearings. I don't think motor can rev quick enough to actually slip the belt? I've never had any issues. Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/934-proper-belt-tensioning-endtf673/#findComment-4793 Share on other sites More sharing options...
fullfuel01 Posted March 14, 2006 Share Posted March 14, 2006 usually it's when you can 'turn' the belt 1/4 of a turn Quote Link to comment https://www.bigmacktrucks.com/topic/934-proper-belt-tensioning-endtf673/#findComment-4795 Share on other sites More sharing options...
Tombstone Posted April 15, 2006 Share Posted April 15, 2006 usually it's when you can 'turn' the belt 1/4 of a turnA good rule of thumb, is to place your thumb in the center of the belt about halway between the pulleys and push in, the belt should move 1/2" to 3/4",that's proper tension.Tombstone. Quote Link to comment https://www.bigmacktrucks.com/topic/934-proper-belt-tensioning-endtf673/#findComment-5355 Share on other sites More sharing options...
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