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Hot!gasket thickness

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texas03042@yahoo.com
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2019/01/27 19:17:10 (permalink)
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gasket thickness

 i have ordered gasket set 480008 for a b&s 401415-0152-01. the parts diagrams says the end cover gasket is .005. elsewhere i have seen one that is .009 and one that is 1/64th. how do i determine which one to use?
  i am guessing that the different thicknesses are to set crank drift, or thrust. i am not finding anything online that tells how to do this.
  the motor is repowering a case 446 with a knackered onon b43m.
   thank you.  dav

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    AVB
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    Re: gasket thickness 2019/01/27 20:37:16 (permalink)
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    1/64" = .015"
     
    CRANKSHAFT END PLAY

    Crankshaft end play is .002” (.05 mm) to .026” (.66 mm) on vertical crankshaft engines and .004” (.10 mm)
    to .012” (.30 mm) on horizontal crankshaft engines with one .015” (.4 mm) gasket in place. If end play is
    less than .002” (.05 mm), which could be the case if a new crankcase cover or sump is used, additional
    gaskets .005” (.13 mm), .009” (.23 mm) or .015” (.4 mm) may be added to obtain correct end play.

    If end play is more than .026” (.66 mm) for vertical crankshaft engines or .012” (.30 mm) on horizontal
    shaft engines, with one .015” (.4 mm) gasket in place, install thrust washer, Part #222951, Fig. 6. Install
    thrust washer on PTO end of crankshaft, plain bearing engines or magneto end of crankshaft on engines with
    ball bearing on PTO side only. Then adjust end play as described in previous paragraph.
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