{HEAD ~ Mechanism} for preventing {TAIL ~ dropping} of the caliper during work on a pin slide type disc brake 
for preventing
{ HEAD ~ Mechanism } for preventing { TAIL ~ dropping } of the caliper during work on a pin slide type disc brake
HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH