19 . Place a support under the camshaft gear and use a hydraulic press to remove the gear . 16 . Clean the pump housing carefully and replace worn parts . Install the diaphragm and the lever on the diaphragm shaft . Then insert the shaft and tighten it with the screw . Assemble the two housing halves and install the attachment plate (1) . Then install the spring (2) and the O- ring (3) . Valve lifters 17 . Check the valve lifters for wear . Replace them if neces sary . Crankshaft 20 . Remove the gear wheel . Use a prong puller . Clean the crankshaft . Measure the crank-and main bearing pins . The eccentricity must not exceed 0 .06 mm ( .002362 in .) and the taper 0.05 mm ( .001969 in .) .
Should these values be exceded, the crankshaft must be ground to a suitable under-dimension, seunder"TechnicalData". Camshaft 18 . Check the camshaft for wear on cams and bearing ra ces . Also check the wear of the bearings . The bearings are pressed into their locations and must be line bored after the installation .