Nexen DB 835071 User Manual
Page 5
5
FORM NO. L-20011-J-0711
INSTALLATION
NOTE: The Brake Disc (ordered separately) may be mounted
to a customer supplied hub or mounted to the Nexen
Disc Brake Hub (also ordered separately) for use
with a Q.D. Bushing.
1. Apply a drop of Loctite® 242 to the threads of the six
Flat Head Hex. Socket Cap Screws provided with the
Brake Disc and secure the Brake Disc to the Brake
Disc Hub or to a customer supplied hub (See Figure
1).
2. Alternately and evenly tighten the six Flat Head Hex.
Socket Cap Screws to the recommended torque (See
Figure 1 and Table 1).
3. Thoroughly inspect the tapered bore of the Brake Disc
Hub and the tapered surface of the Q.D. Bushing.
Remove any dirt, grease, or foreign material. Do not
use lubricants for this installation.
4. Assemble the Q.D. Bushing into the Brake Disc Hub,
aligning the untapped holes in the Q.D. Bushing with
the tapped holes in the Brake Disc Hub.
NOTE: Runout is minimized if a Dial Indicator is used as
the pull-up bolts are tightened. Place the contact
tip of the Dial Indicator on the machined surface of
the Brake Disc to measure runout. Runout should
be less than 0.010-0.015 In. [0.254-0.381 mm]
(See Figure 2).
5. Insert the pull-up bolts; then, alternately and evenly
tighten them to 15 Ft. Lbs. [20.3 N•m] torque.
6. To remove the Q.D. Bushing, remove the pull-up bolts;
then, reinsert them into the threaded holes of the Q.D.
Bushing. Tighten the pull-up bolts to push the Q.D.
Bushing out of the Disc Hub.
TABLE 1
S
E
U
Q
R
O
T
G
N
I
N
E
T
H
G
I
T
D
E
D
N
E
M
M
O
C
E
R
S
W
E
R
C
S
P
A
C
T
E
K
C
O
S
.
X
E
H
D
A
E
H
T
A
L
F
L
E
D
O
M
E
U
Q
R
O
T
G
N
I
N
E
T
H
G
I
T
c
s
i
D
.
n
I
0
1
)
0
0
5
5
5
8
.
o
N
.
d
o
r
P
(
]
m
•
N
4
0
.
5
[
.
s
b
L
.
n
I
5
4
c
s
i
D
.
n
I
2
1
)
0
0
6
5
5
8
.
o
N
.
d
o
r
P
(
]
m
•
N
6
7
.
1
1
[
s
b
L
.
n
I
5
0
1
c
s
i
D
.
n
I
4
1
)
0
0
7
5
5
8
.
o
N
.
d
o
r
P
(
]
m
•
N
6
7
.
1
1
[
s
b
L
.
n
I
5
0
1
c
s
i
D
.
n
I
6
1
)
0
0
8
5
5
8
.
o
N
.
d
o
r
P
(
]
m
•
N
6
7
.
1
1
[
s
b
L
.
n
I
5
0
1
CAUTION
If excessive tightening torque is applied, bursting
pressures are created in the Brake Hub. There must
be a gap between the flange of the Q.D. Bushing
and the Brake Disc to ensure a proper fit of the Q.D.
Bushing onto the shaft.
Brake
Disc
Flat Head Hex.
Socket Cap Screw
FIGURE 1
Brake Disc
Hub
Dial
Indicator
Brake
Disc
FIGURE 2