US 11,701,763 B2
Safe/fast locking/unlocking tool for engine torsion vibration damper
Antonino Barresi, Turin (IT); and Gianfranco Badellino, Turin (IT)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on Oct. 19, 2020, as Appl. No. 17/74,586.
Prior Publication US 2022/0118592 A1, Apr. 21, 2022
Int. Cl. B25B 27/00 (2006.01); B25B 23/00 (2006.01)
CPC B25B 27/0035 (2013.01) [B25B 23/0085 (2013.01); B23P 2700/07 (2013.01); F16F 2226/04 (2013.01); F16F 2230/0005 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A tool for unlocking a torsional vibration damper screw from a crank shaft of an engine, comprising:
an elongated tool body having a first end and a second end, the first end including a pair of engagement pins sized and spaced for engaging a pair of apertures in a torsional vibration damper, the second end including an aperture:
a centering knob having a first diameter portion received in the aperture in the second end of the elongated tool body and the centering knob having a second diameter portion that is larger than the first diameter portion and is disposed against a face of the tool body, the centering knob included with a fastener for engaging the second end of the elongated tool body to a mounting location on the engine; and
a spacer element disposed entirely on an opposite side of the elongated tool body from the second diameter portion of the centering knob, the spacer element having an aperture receiving the fastener for attaching the spacer element between the second end of the tool body and the engine mounting location.