Troubleshooting, Friction facing wear adjustment – Nexen QFB-2500 964086 User Manual
Page 9
FORM NO. L-20117-F-0210
9
TROUBLESHOOTING
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P
FRICTION FACING WEAR ADJUSTMENT
NOTE: Friction Facing wear adjustment is not required for
DFB Series Brakes.
NOTE: When the QFB Series Brake facings are worn to
the point of required adjustment, the gap between
the Cylinder and Piston will close, thus preventing
brake engagement.
1. Unscrew Socket Head Cap Screws (Item 12)
approximately 1/8" and pull Piston (Item 6) loose to
free Shims (Items 16, 17, and 18) (See Figure 8).
2. Unscrew Socket Head Cap Screw (Item 12) until it is
free; then, remove four Adjustment Shims (Item 18)
that extend beyond the other Shims (Item 16 and 17)
(See Figure 8).
NOTE: Save the Shims that have been removed for
use when new Frictions Facings are installed.
3. Replace the Socket Head Cap Screw and Lock Washer.
4. Repeat Steps 2 -3 until the remaining Adjustment Shims
have been removed. Apply a drop of Loctite 242 to the
threads of the twelve Socket Head Cap Screws (Item
12).
5. Alternately and evenly tighten Socket Head Cap Screws
(Item 12) to recommended torque (See Table 5).
TABLE 5
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8
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8
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4
1
FIGURE 8
17
18
12
16
6 15
- QFB-1150 964080 QFB-2500 964087 QFB-1150 964081 QFB-1150 964167 DFB-1650 964074 DFB-1650 964305 DFB-1650 964075 DFB-1650 964301 DFB-2200 964076 QFB-1650 964082 QFB-1650 964219 DFB-2200 964077 QFB-1650 964083 QFB-1650 964272 DFB-2500 964078 DFB-1150 964072 QFB-2200 964084 DFB-1150 964073 DFB-1150 964045 DFB-1150 964270 DFB-1150 964169 DFB-2500 964079 QFB-2200 964085 QFB-2200 964286 DFB-1150 964017 QFB-1150 964017 DFB-1650 964020 QFB-1650 964020 DFB-2200 964023 QFB-2200 964023 DFB-2500 964026 QFB-2500 964026