well i have shown its use in earlier posts ,,,,,,,,, its a wire made of putty ,,,,, kind of plastisin which many of us use to make clay toys in childhood ,,,,,,,,,, it expands under stress between crank shaft and its bearings ,,,,,,, we get reading by how much it expands and match it first with the gauge mentioned on its envelop ,,,, both in inch/thou and in mm ,,,,,,, workshop manuals does have min and max reading of oil clearance mentioned,,,,,,crank shaft floats on that oil clearance and its very imp to set it correctly ,,,,,,,to much clearance will cause oil leakage and drop oil pressure which further accelerate the wear on crank shaft journals ,,,,,oil leakage from crank shaft journals will also drop oil pressure going towards head/cam shaft journals ,,,,,,,too less clearance will simply seize the bearings ,,,,,,,, unfortunately our local mechanics have no idea about these things ,,,,,, neither there screw gauges are accurate enough to show exact readings,,,,,,, u can see in the above rebuilt i use same number of bearings without grinding the crankshaft ,,,, i mention its reason as well ,,,,,, one mistake i did in that ,,,,,, you can polish the journals at home ,,,,,, with flat shoe laces and sand paper ,,,,,,, i must slightly polish it before fitting new crank shaft bearings,,,,,,,
