FORM NO. L-20094-E-0914
9
FIGURE 5
12
11
4
20
7
11
16
10
35
13
14
2
3
FRICTION FACING (Item 4)
Inspect Friction Facings for wear, and replace when they
are approximately 9/32" thick. Friction Facings can be
replaced without removing DPB Brake from motor shaft.
Refer to Figures 4 & 5.
1. Disconnect air supply lines from Adaptor Fittings (Item
16).
2. Remove Cap Screws (Item 42), Lockwashers (Item 43),
and swing Torque Arm (Item 37) clear of DPB Brake.
3. Remove Cap Screws (Item 12) and Locknuts (Item 20).
4. Remove Friction Disc (Item 7).
5. Remove Shoulder Screws (Item 13) and Springs (Item
14).
6. Slide Piston/Drive Disc (Item 2) off Splined Hub (Item
35).
7. Remove Retaining Ring (Item 10).
8. Slide Cylinder/Drive Disc (Item 3) off Splined Hub (Item
35).
9 Remove Machine Screws (Item 11), and replace worn
Friction Facings (Item 4).
PARTS REPLACEMENT
FIGURE 4
Alignment
Mark
Alignment
Mark
Alignment
Mark
Alignment Mark
NOTE: On some models of the DPB Brake, the
Machine Screws (Item 11) are assembled with
a green anaerobic thread locking compound.
If removal is difficult, strike end of screwdriver
with a hammer to break crystalline structure of
locking compound before attempting to remove
screws. Machine Screws (Item 11) furnished
with new Friction Facings have a locking patch
and do not require the use of a thread locking
compound.
10. Reverse Steps 1 through 8 to reassemble the DPB
Brake, noting chalk alignment marks, and tighten all
screws to recommended torque (See Table 2).
CAUTION
The Nexen DPB Brake has been balanced
at the factory. During disassembly, mark
components with chalk alignment marks
to insure correct alignment and balance as
the DPB Brake is reassembled (See Fig. 4).
When reassembling the Nexen DPB Brake,
make sure all screws are tightened to the
recommended torque (See Table 2).
CAUTION
Working with spring loaded or tension
loaded fasteners and devices can cause
injury. Wear safety glasses and take the
appropriate safety precautions.
