{HEAD ~ The variable coolant pump} 1, further comprising a return spring, arranged to pretension the guide disc towards the impeller via {TAIL ~ the piston} 
{ HEAD ~ The variable coolant pump } 1 , further comprising a return spring , arranged to pretension the guide disc towards the impeller via { TAIL ~ the piston }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL