Iv. park brake (continued) – Gradall 534D-10 Service Manual User Manual
Page 73
IV. Park Brake (continued)
Form No. 29633 3/97
8
FIGURE 8C
BOTTOM OF FLOOR PLATE
ASSEMBLY (CURRENT)
A new front axle housing went into production starting 534C-9 Serial No. 0344394 and 534C-10 Serial No.
0266057. When the new front motor design went into production, several units later the front axle housing
stayed the same. The park brake is internal in the front axle differential assembly. The brake test procedure
remains the same. However, the park brake components are different.
See Figure 8D.
To check for friction disc wear, the axle must be disassembled and reassembled according to
Rockwell
Maintenance Manual No. 9D. The brake disc thickness is 0.1245". There is an 8-10% maximum wear
factor allowed on the discs. The minimum disc thickness allowed is 0.1120".
See Figure 8E.