Install the replacement lock, following this procedure in reverse.
(5) Energize the table and engage the lock. Attempt to move the transverse
carriage. It should take a minimum of 20 pounds of force to move the carriage. Locks
should not make a "banging" sound when energized. Adjust the transverse lock,
following the procedures discussed in Lesson 1.
h. Longitudinal (Head-Foot) and Grid Locks Replacement.
Turn off the power to the table and remove the table top.
(2) Position the grid chamber at the foot-end of the table and move the
longitudinal carriage to the head-end.
(3) Locate the longitudinal lock (the grid lock is located next to the grid).
Label all wiring on the lock and disconnect it.
(4) Notice the longitudinal (or grid) lock is suspended on two threaded,
shouldered studs. A spring, retained by a cotter pin and washer on each stud, holds the
lock away from the carriage when it is disengaged.
(5) Remove the cotter pin, washer, and spring from each stud. It may be
necessary to climb into the table body to perform this step. An inspection mirror may be
helpful when removing the hardware from the stud at the head end of the lock.
Use a hex key wrench to back out both studs until the lock can be
Install the replacement lock by following the procedure in reverse.
(8) Energize the table and engage the lock from the spot-film device front
panel. Attempt to move the longitudinal carriage. It should take a minimum of 20
pounds of force to move the carriage. Locks should not make a "banging" sound when
energized. Adjust the longitudinal lock, following the procedure in Lesson 1.
Tilt Drive Chain Replacement.
Turn off the power to the table and the remainder of the system.
(2) Wedge two lengths of heavy lumber between the bottom of the table
body and the floor at the head-end of the table.
Remove the drive-mechanism cover at the foot-end of the table leg.
Remove the protective cover over the gear reducer.