Mitutoyo MF 1010C Series, User Manual, Page: 60 / 88

No. 99MBA091A
4-6
4.3.4 Replacement of conston spring
(1) Move the optical tube upward, place an appropriate spacer under the optical tube for fall
prevention.
(2) Remove the rear cover from the column.
(3) Insert a driver into the work hole of the spring bracket, pull the conston spring upward, and
disengage the wire from the pulley.
(4) Move back the conston spring to the position where the spring is shortest.
(5) Loosen the cross recessed truss-head screw and disengage the wire. (Pay attention not to
lose the collar.)
(6) Loosen the hexagon nut (M6) and remove the spring bracket and conston spring.
(7) Loosen the hexagon socket head cap screws (2 pieces, M3), remove the shaft from the
column, and replace the conston spring.
(8) Put back the shaft to the column.
(9) Put the spring bracket and conston spring together with a gap maintained using the hexagon
socket head cap screws (2 pieces) and hexagon nuts (2 pieces). (If there is no gap, the wire
cannot be evenly pulled.)
(10) Engage the wire with the spring bracket using the cross recessed truss-head screw and collar.
(11) Insert a driver into the work hole of the spring bracket, pull the conston spring upward, and
engage the wire with the pulley.
(12) Put back the rear cover to the column.
IMPORTANT
Use caution not to hurt your fingers with the edge of the conston spring.
NOTE
Prepare a hexagon wrench (nominal size 5) and a spanner (nominal size 10) for
putting hexagon socket head cap screws and hexagon nuts in addition to the
standard tools (accessories).
Conston spring
Spring bracket
Wire
Pulley
Work hole
Shaft
Hexagon socket head
cap screw M3 (2 pieces)
Conston spring
Spring bracket
Wire
Cross recessed trust-head screw
Hexagon socket head cap
screw M6
Hexagon nut M6
Collar