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8. Daily Inspection and Maintenance
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FB-1E (Outdoor Type)
Code Part Name
1 Stationary core
2 Brake release
3 Seal washer
4 Manual release prevention spacer
5 Brake release bolt
6 Spacer
7 Gap adjusting shims
8 Attachment bolt
9 Brake lining
10 Leaf spring
11 Boss
12 Shaft-retaining C-ring
13 Cover
14 Shaft-retaining C-ring
15 Fan
16 Fixed plate
17 Armature plate
18 Spring
19 Electromagnetic coil
20 Ball bearings
21 Motor shaft
22 Waterproof seal
23 V-ring
24 Waterproof cover attachment bolts
25 Waterproof cover
26 Shock absorber
123456789101112
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13 14 15 16 17 18 19 20 21
22
23
24
25
X
Details for X
26
- Gap Inspection
(1) Remove the brake release bolt [5] and the manual release prevention spacer [4].
(2) Remove the cover [13].
(3) Remove the shaft-retaining C-ring [14], and remove the fan [15].
(4) Remove the brake release [2] (2 locations) and remove the waterproof seal [22].
(5) Insert a gap gauge between the stationary core [1] and the armature plate [17]
and measure the gap. Measure in 3 locations around the circumference.
(6) Adjustment is required if the gap value is near the limit.
(Gap adjustment shim thickness is approximately 0.2 – 0.25 mm. Adjustment
cannot be made at a lower value.)
- Gap Adjustment
(1) Remove the brake release bolt [5] and the manual release prevention spacer [4].
(2) Remove the cover [13].
(3) Remove the shaft-retaining C-ring [14], and remove the fan [15].
(4) Pull o the V-ring [23].
(5) Remove the brake release [2] (2 locations) and remove the waterproof seal [22].
(6) Remove the waterproof cover attachment bolts [24], and remove the waterproof cover [25].
(7) Loosen the attachment bolts [8] and remove the spacers [6], gap adjustment shims [7], attachment bolts [8] and xed plate [16]
as a set. When removing the attachment bolts [8] make certain not to omit the gap adjustment shims [7] or the
shock absorber [26].
(8) The gap adjustment shims [7] have a thickness of 0.2 – 0.25 mm. Reduce the number of shims according to the
wear conditions, then reassemble the spacers [6], gap adjustment shims [7], attachment bolts [8] and the xed
plate [16] as a set.
(9) Check the gap G, and readjust the shims if there is a large dierence between it and the required value.
(10) Attach the waterproof cover [25] using the waterproof cover attachment bolts [24]. At this time align the cutout
area on the side of the waterproof cover [25] with the brake release bolt [5]. Attach the waterproof cover [25] so
that the gap (A) between its hole and the motor shaft [21] is nearly uniform.
(11) Clean the surface of the waterproof seal [22] to remove impurities.
(12) As shown in the construction diagram, install the waterproof seal [22] between the stationary core [1] and the
waterproof cover [25]. Then attach the brake release [2]. Insert the waterproof seal [22] with its arrow mark pointing toward the
load side. Align the hole in the waterproof seal [22] for the brake release bolt with the position of the release bolt [5]. Attach the
waterproof seal [22] so that its protrusion ts snuggly around the entire circumference of the groove for the stationary core [1]. (Be
careful that the waterproof seal [22] does not meander. Otherwise water could leak in.)
(13) Turn the power on and o to check brake action.
(14) Attach the V-ring [23]. Wipe o the lip and surface near the lip of the V-ring [23], lightly coat the the lip contact surface with
grease, and attach. Observe the attaching dimension (B
=
6mm).
(15) Attach the fan [15], shaft-retaining C-ring [14] and cover [13].
(16) Finally, attach the brake release bolt [5] and the manual release prevention spacer [4].
Gap value G (mm)
Required value
(original value)
Limit value
0.25 – 0.35 0.6
Ｂ
Ａ
Figure 8-24
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