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SECTION 3 - CHASSIS & TURNTABLE
Figure 3-27. Swing Motor Removal
3-14
Input Brake Disassembly
Refer to Figure 3-28.
1. Insert and tighten 0.250-20 UNC flat Socket Head
Capscrews through the Pressure Plate (8M) and into the
Brake Piston (8A) to compress springs and relieve pres-
sure on the Retaining Ring (8N).
SAFETY GLASSES MUST BE WORN DURING THESE NEXT STEPS.
NOTE: Ensure Step 1 is completed before doing this next step.
2. Using retaining ring pliers, remove Retaining Ring (8N)
holding Brake Piston assembly in place.
3. Lift Brake Piston Assembly (8A) out of Brake Housing (6).
If Brake Piston assembly (8A) will not lift out, apply no
more than 50 psi air to the Brake port to remove Brake
Piston (8A). Remove Inner (Rotor) (8J) and Outer (Stator)
Plates (8K) from inside Brake Housing (6).
4. Remove O-rings (8D, 8F) and Backup Rings (8E, 8H) from
the Brake Housing (6).
Discard O-rings and Backup Rings.
5. Remove 0.250-20 UNC flat Socket Head Capscrews and
lift the Pressure Plate (8M) from the Brake Piston (8A).
NOTE: Record number of springs and mark locations before
removing from brake piston.
6. Remove Springs (8L) from Brake Piston (8A).
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