CYLINDER BLOCK - CONTINUED
REPAIR - CONTINUED
Tool bit must rotate freely and clear counterbore ledge.
55. Cylinder block (1)
Using dial indicator depth gage, measure
depth of counterbore through four counter-
bore measuring holes on ST-1064 adapter.
The average of the four readings will
be the present depth of counterbore.
Rotate adjusting nut until tool bit is
resting on lowest part of counterbore
ledge and there is clearance between
housing (4) and adjusting nut (5).
The distance between housing and adjusting nut equals amount of material that will be
removed from counterbore ledge.
Using a thickness gage of the same
thickness as amount of material needed
to be removed from counterbore ledge
(step 20) rotate adjusting nut
until thickness gage is just held between
adjusting nut and top of housing. Tighten
locking nut (8).
Hold down on handle (7), applying more
pressure on tool bit side, and rotate
handle in a clockwise direction until
unit turns freely and is bottomed out
between adjusting nut and top of
Measure depth of counterbore as de-
scribed in step 55.
Compare with specifications in