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8. Daily Inspection and Maintenance
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FB-5E, FB-8E (Outdoor Type)
Code
Part Name
1
Stationary core
2
Brake release
3
Seal washer
4
Manual release prevention
spacer
5
Brake release bolt
6
Stud bolt
7
Adjusting washer
8
Spring washer
9
Gap adjusting nut
10
Brake lining
11
Leaf spring
12
Boss
13
Shaft-retaining C-ring
14
Cover
15
Shaft-retaining C-ring
16
Fan
17
Fixed plate
18
Armature plate
19
Spring
20
Electromagnetic coil
21
Ball bearings
22
Motor shaft
23
Waterproof seal
24
V-ring
25
Waterproof cover attachment
bolts
26
Waterproof cover
1
2
3
4
5
6
7
8
9
10
11
12
13
14 15 16 17 18 19 20 21
Ｇ
22
23
24
25
26
-
Gap Inspection
(1) Remove the brake release bolt [5] and the manual release prevention spacer [4].
(2) Remove the cover [14].
(3) Remove the shaft-retaining C-ring [15] and the fan [16].
(4) Remove the brake release [2] (2 locations) and remove the waterproof seal [23].
(5) Insert a gap gauge between the stationary core [1] and the armature plate [18]
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
(1) Remove the brake release bolt [5] and the manual release prevention spacer [4].
(2) Remove the cover [14].
(3) Remove the shaft-retaining C-ring [15] and the fan [16].
(4) Pull off the V-ring [24].
(5) Remove the brake release [2] (2 locations) and remove the waterproof seal [23].
(6) Remove the waterproof cover attachment bolts [25], and remove the waterproof cover [26].
(7) Insert a gap gauge between the stationary core [1] and the armature plate [18] and rotate to the right the gap adjusting nuts
[9] that are attached to ends of the stud bolts [6]. If the gap is large, and adjustments are not possible, decrease the number
of adjustment washers [7]. There are 3 adjusting nuts [9]. Adjust these in turn so that 3 positions on the circumference are
uniformly at the required gap.
(8) Attach the waterproof cover [26] using the waterproof cover attachment bolts [25]. At this time align the cutout area on the side
of the waterproof cover [26] with the brake release bolt [5]. Attach the waterproof cover [26] so that the gap (A) between its hole
and the motor shaft [22] is nearly uniform.
(9) Clean the surface of the waterproof seal [23] to remove impurities.
(10) As shown in the construction diagram, install the waterproof seal [23] between the stationary core [1] and the
waterproof cover [26]. Then attach the brake release [2]. Align the hole in the waterproof seal [23] for the brake
release bolt with the position of the release bolt [5]. Next, attach along the machined surfaces around the
stationary core [1]. Be careful that the waterproof seal [23] does not meander. Otherwise water could leak in.)
(11) Turn the power on and off to check brake action.
(12) Attach the V-ring [24]. Wipe off the lip and surface near the lip of the V-ring [24], lightly coat the the lip contact
surface with grease, and attach. Observe the attaching dimension (B
=
6mm).
(13) Attach the fan [16], shaft-retaining C-ring [15] and cover [14].
(14) Finally, attach the brake release bolt [5] and the manual release prevention spacer [4].
Gap value G (mm)
Required value
(original value)
Limit value
0.35 – 0.45
1.0
Ｂ
Ａ
Figure 8-27
