richie Posted September 5, 2010 Share Posted September 5, 2010 hey guys ..I read your posts on how to check for king pin wear but can someone tell me just how much slack is ok or is any slack not a good thing. when lifted with a bar the wheel moves very slightly but am wondering should it move at all or is a little ok ?? Quote Link to comment https://www.bigmacktrucks.com/topic/15607-king-pin/ Share on other sites More sharing options...
rhasler Posted September 5, 2010 Share Posted September 5, 2010 hey guys ..I read your posts on how to check for king pin wear but can someone tell me just how much slack is ok or is any slack not a good thing. when lifted with a bar the wheel moves very slightly but am wondering should it move at all or is a little ok ??Kingpin wear is measured with a dial indicator at the top and bottom of the spindle, parallel to the axle against the bushing/bearing bore. For a Mack FAW axle the total indicator travel (measurement from top bore plus measurement from bottom bore) should not be more than .015. I think for Rockwell/Meritor and Eaton axles the specification is .012" Quote "Mebbe I'm too ugly and stupid to give up!" Link to comment https://www.bigmacktrucks.com/topic/15607-king-pin/#findComment-63071 Share on other sites More sharing options...
fjh Posted September 8, 2010 Share Posted September 8, 2010 Kingpin wear is measured with a dial indicator at the top and bottom of the spindle, parallel to the axle against the bushing/bearing bore. For a Mack FAW axle the total indicator travel (measurement from top bore plus measurement from bottom bore) should not be more than .015. I think for Rockwell/Meritor and Eaton axles the specification is .012"By DOT limits here your allowed 3/16 at the bottom of the wheel tipping it with a bar! I would be more inclined to say 1/8 to be the maximum! Bare in mind to much wear can create unwanted tire wear! Quote Link to comment https://www.bigmacktrucks.com/topic/15607-king-pin/#findComment-63274 Share on other sites More sharing options...
Freightrain Posted September 8, 2010 Share Posted September 8, 2010 Make sure the wheel bearing is tight, if checking by wiggling the wheel. Or have someone actually watch the spindle to confirm it's the pin. Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/15607-king-pin/#findComment-63275 Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.