Abstract: An assist hand tool adapted for use in installing a vehicle door hinge pin comprising an L-shaped blockpiece having a forwardly extending bifurcated head portion terminating at its aft end in a downwardly extending bifurcated body portion. The bifurcated head portion has a pair of forwardly extending side walls defining a pin-receiving slot and the bifurcated base portion terminating at its lower end in a pair of downwardly extending body side walls defines a lever-receiving slot. An operating lever comprises an elongated handle section extending rearwardly through the body slot aft opening and a jaw section extending through the body slot forward opening. The handle section and the jaw section have their proximate ends interconnected by an inclined pivot section pivotally connected by a transverse pivot pin to the body walls. The head portion is cooperatively sized for snug fit between an upper and lower pair of door-half hinge flanges.