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If lining wear is excessive, greater than 3/16" (4.75 mm), linings should be replaced.
Remove both connecting arms by removing all four retaining rings and washers. Remove
moveable shoe assembly. Remove screw from top of each lining assembly and remove
linings by unhooking them at the bottom. It may be necessary to loosen 3 mounting bolts per
side to tip gripper to allow access to stationary shoe. Refer to Table 2 for initial spacer and
shim set-up to use with new linings. When linings have been replaced, follow the
INSTALLATION OF "ROPE GRIPPER™" procedure and the LINING WEAR-IN
procedure on pages 4 to 6.
If lining wear is not excessive, less than 3/16" (4.75 mm), spacer shims (see Figure 8) can
be moved from the back side of the shaft support blocks to between the shaft support blocks
and moveable shoe. Loosen the bolts that hold the blocks to the movable shoe, move the
spacer shims to under the blocks and reinstall and tighten bolts. Addition of shims between
the block and the shoe will lower the position of the rotating shaft toward the bottom end of
the cam when clamping.
When adjustment/replacement is complete, turn OMS lever to Auto Reset and carefully
remove the security set screws, being sure the rotating shaft doesn't move. Follow the
procedures described earlier to ensure that the rotating shaft is around the corner at the
bottom of the cam (and connecting arm position matches or covers the wear-in line marked
on the side wall) when gripping the ropes.
The following three tests should be made while the car is running in slow speed in both the up
and down directions.
During each test the "ROPE GRIPPER™" should:
A. Grab the Ropes,
B. Stop the car, and
C. Open the control safety circuits disconnecting power to the motor and
machine brake.
9/4/2015
Figure 10 - Gearbox of 622G Rope Gripper
TESTING ALL CIRCUITS
TM
BULLETIN 1166
Page 9 of 20
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