Installation – Nexen S-1200 822517 User Manual
Page 5
5
FORM NO. L-21091-D-0110
Pull-Up Bolts
Q.D. Bushing
Friction Disk
Hub
(Item 1)
Check runout with
Dial Indicator on
Friction Disc Hub
(Item 1).
Air Chamber
(Item 4)
Torque
Pin Slot
Torque Pin
FIGURE 1
INSTALLATION
TABLE 1
1. Remove any dirt, grease, or foreign material from the
Friction Disc Hub (Item 1) bore and the tapered surfaces
of the Q.D. Bushing.
NOTE: Do not use lubricants when installing Q.D.
Bushing.
Do not strike Q.D. Bushing to “set” it in the bore of the
Friction Disc Hub.
2. Slide Q.D. Bushing into the bore of the Friction Disc
Hub (Item 1).
3. Insert cap screws into Q.D. Bushing, aligning them
with the tapped holes in the Friction Disc Hub (Item
1).
4. Position T Brake on the shaft.
NOTE: There should be an 1/8 - 1/4 inch [3.2 -6.4mm]
gap between the Q.D. Bushing flange and the Friction
Disc Hub after the cap screws have been tightened to
the recommended torque.
Runout is minimized if a Dial Indicator is used as the
Q.D. Bushing cap screws are tightened. Place contact
tip of Dial Indicator on smooth surface of the Friction
Disc Hub (Item 1) to measure runout. Runout on this
surface must not exceed 0.005 [0.13 mm] TIR when
cap screws are tightened.
5. Alternately and evenly tighten Q.D. Bushing cap screws
to torque recommended in Table 1.
NOTE: Keep torque pin as short as possible.
6. Secure the Air Chamber (Item 4) to prevent rotation
and take up brake torque. A torque pin slot is provided
in the Air Chamber.
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NOTE: Refer to Figure 1.
CAUTION
Do not flange mount T Brakes.
Bearing preload will result after
bushing is installed and premature
bearing failure will ensue.
CAUTION
Do not install bolts into the threaded
holes of the Q.D. Bushing. The threaded
holes in the Q.D. Bushings are only used
for removal of the Q.D. Bushing.