5756
8. Daily Inspection and Maintenance
- Gap Inspection
(1) Remove cover [8].
(2) Insert a gap gauge between the eld [4] and armature [12] and measure the
gap. Measure in 4 locations around the circumference.
(3) Adjustment is required if the gap value is near the limit.
- Gap Adjustment
(1) Manually release the brake following the procedure on P71.
(2) Loosen the stopper [16] on the periphery of the center ring [1], and remove it. This will free the gap adjusting screws [2].
(See Figure 8-19)
(3) Insert the gap adjusting bar (customer to prepare an angle plate. See Figure 8-21) from between the outer disc [14] and the
center ring [1] into a hole for a gap adjusting screw [2].
Rotating to the left as seen from the eld [4] side, will narrow the gap. (See Figure 8-20)
(4) Six attachment bolts [3] and 6 lock bolts [11] alternately pass through the space between the outer disc [14] and the center ring
[1]. Rotating the gap adjusting bar will contact these bolts. There are 8 equally distributed holes for gap adjusting screws [2].
Adjust the gap G to the required value by repeating (3) each time the gap adjusting bar contacts a bolt,.
(5) Select the point where hole and screw hole are closest to the required gap and attach the stopper [16] there.
(6) After returning the manual brake release to its original state, turn power on and o to check brake action.
(7) Attach the fan [7] and cover [8]. At this time coat the fan set screw [10] with Three Bond TB2365.
4
16
1
2
14
Gap adjusting bar
2
1
14
bar dimensions
14.7 ± 0.1 mm
150mm3.5 mm
Figure 8-19 Figure 8-20
Figure 8-21
Gap value G (mm)
Required value
(original value)
Limit value
0.7 2.0
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