Installation- brake (continued) – Nexen DFE-2500 964009 User Manual
Page 6
6
FORM NO. L-20021-E-0110
QFE
Refer to Figures 3 & 4.
1. Provide a piloting flange and 5/8-11 tapped holes to
a non-rotating surface of the machine.
NOTE: Control perpendicularity between the machine
shaft and the mounting surface of the Housing
(Item 2) as the cap screws are tightened. Use
a dial indicator for measurements and the
machine surfaces of the housing posts as a
reference surface. Perpendicularity should be
less than 0.015'' [0.381 mm].
2. Using customer supplied cap screws, secure the
Housing (Item 2) to the non-rotating part of the machine.
3. Tighten the customer supplied cap screws to 233 Ft.
Lbs. [315.90 Nm] torque.
4. Install a customer supplied key into the shaft; then,
slide the Hub (Item 1) onto the shaft.
NOTE: The axial location of the Hub (Item 1) is critical
to the proper operation of the QFE—BRAKE.
Refer to Table 2 and Figure 4 for correct Hub
location.
5. Using a customer supplied set screw, secure the Hub
(Item 1) to the machine shaft.
6. Coat the teeth of the Hub (Item 1) with Never-Seez
®
.
7. Slide the first Disc Assembly (Item 4) onto the Hub
(Item 1).
8. Slide the Facing Plate (Item 24) onto the Hub (Item 1).
9. Slide the second Disc Assembly (Item 4) onto the Hub
(Item 1).
NOTE: On QFE 1650 and QFE 2200 the Piston and
Pressure Plate are one item.
10. Assemble the Cylinder (Item 5), Piston (Item 6), and
Pressure Plate (Item 7) to the Housing (Item 2).
11. Using the Cap Screws (Item 14) and Lockwashers
(Item 20), secure the Cylinder (Item 5) to the Housing
(Item 2).
12. Alternately and evenly tighten the Cap Screws (Item
14) to 119 ft. lbs. [161.34 Nm] torque.
FIGURE 3
2
1
24
4
5/6/7
20
14
TABLE 2
Q
]
N
O
I
T
A
C
O
L
B
U
H
E
F
Q
L
E
D
O
M
N
O
I
T
A
C
O
L
B
U
H
0
5
1
1
-
E
F
Q
]
m
m
7
3
2
.
2
7
1
[
"
1
8
7
.
6
0
5
6
1
-
E
F
Q
]
m
m
6
9
5
.
6
9
1
[
"
0
4
7
.
7
0
0
2
2
-
E
F
Q
]
m
m
9
9
9
.
6
6
2
[
"
7
3
9
.
8
0
0
5
2
-
E
F
m
m
7
8
7
.
7
7
2
[
"
8
6
9
.
8
FIGURE 4
Hub Location
INSTALLATION- BRAKE (continued)