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ZEXEL K155 diesel plunger
In GB5264-85 regulation,plunger should have a good slide function in plunger sheath;
there is a interval between plunger and plunger sheath; radial direction interval base on the diameter seal data of oil pressure test , plunger using for the multy cylinder diesel engine be grouped by the diameter seal data.This standard regulation can use at the function test too. In order to ensure the two part quality of plunger and plunger sheath, 0.0005mm used to group them,then put the suitable diameter of plunger insert to about 1/2~2/3 length of guiding surface plunger sheath , after taking it out, daubing the abrasive paste for dynamic mutual abrasion . Cleaning the abrasive paste and sliding at diesel, put the plunger at 45 angle against horizon.Drawing out of 1/3 length of column surface,freely-falling plunger body at any position of axis.
No retardant then will be ok,or dynamic mutual abrasion again.
ZEXEL K155 diesel plunger
