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| Check grooves -arrow 1- of synchro-ring -A- and inner ring for flat spots (worn grooves). |
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| If synchro-rings are coated, coating must not be damaged. |
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| If an intermediate ring -B- is installed, check the outer friction surface -arrow 2- and inner friction surface -arrow 3- of this intermediate ring for »scoring«, »signs of abnormal wear« and »blue discolouration (due to overheating)«. |
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| Check cone of synchromeshed gear for »scoring« and »signs of abnormal wear«. |
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| Moisten synchromesh mechanism with gear oil before installing. |
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