Manitowoc Grove 5540F Service Manual page 387

5540F/YB5515 SERVICE MANUAL
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Disassembly
1. Remove spacers, friction brake discs and steel brake
discs (Figure 11-94).
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2. Remove the piston backup ring and pressure plate
(Figure 11-95).
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3. Remove brake springs (Figure 11-96) and the spring
spacer.
FIGURE 11-93
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Clean and Inspect
1. Thoroughly clean and inspect all parts at this time.
Check brake piston sealing surfaces on the brake
cylinder and motor support. Be sure brake release port
is free of contamination (Figure 11-97).
FIGURE 11-94
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2. Check oil seal and baring surfaces on the brake cylinder
for damage and wear (Figure 11-98).
FIGURE 11-95
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3. Place friction plate disc on a flat surface and check for
distortion with a straight edge.Friction material should
appear even across the entire surface with the groove
11-43
STRUCTURALS
11
FIGURE 11-96
FIGURE 11-97
FIGURE 11-98