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