TM 5-3810-207-20/TO 36C23-3-37-12 CHAPTER 6 AUXILIARY EQUIPMENT AND MAINTENANCE OF ATTACHMENTS AND ACCESSORIES USED IN CONJUNCTION WITH THE CRANE-SHOVEL Section I.  SHOVEL FRONT ATTACHMENT 157.    General The shovel front attachment consists of the boom, dipper  handles,  dipper,  bail  sheave,  dipper  bail,  dipper trip mechanism, saddle blocks, shipper shaft, crowd and retract mechanism, sprocket, and cables.  The dipper is attached  to  the  end  of  the  dipper  handle,  which  slides through the saddle block located near the center of the boom. 158.    Shovel Dipper a. Removal. (1) Remove all reeving form the shovel front attachment (TM 5-810-20710). (2) Remove  the  shovel  dipper  as  instructed on figure 83. Note When removing front end attachments,   always   use   a   suitable lifting device. b. Disassembly.  Disassemble the shovel dipper as illustrated on figure 83. c. Cleaning, Inspection, and Repair. (1) Clean   all   parts      with      an      approved cleaning solvent (2) Inspect     all     parts     for     breaks,     cracks, excessive wear, and other damage. Repair by welding or replace all defective parts. d. Reassembly.  Reassemble the shovel dipper as illustrated on figure 83. e. Installation. (1) Install  the  shovel  dipper  as  illustrated  on figure 83. (2) Install    all    reeving    to    the    shovel    front attachment (TM 5-3810-207-10). 159.    Bail Block a. Removal. (1) Remove  the  reeving  from  the  bail  block (TM 5-3810-207-10). (2) Remove  the  bail  block  as  instructed  on figure 83. b. Disassembly.      Disassemble   the   bail   block   as illustrated on figure 84. c. Cleaning, Inspection, and Repair. (1) Clean all parts with and approved cleaning solvent. (2) Inspect     all     parts     for     breaks,     cracks, excessive wear, and other damage. Repair by welding or replace all defective parts. d. Reassembly.      Reassemble   the   bail   block   as illustrated on figure 84. e. Installation. (1) Install   the   bail   block   as   illustrated   on figure 83. (2) Install the reeving to the bail block (TM 5- 3810-207-10). 160.    Dipper Handle a. Removal. (1) Remove   all   reeving   from   shovel   front attachment (TM 5-3810-207-10). (2) Remove the shovel dipper (par. 158). (3) Remove  crowd  chain  from  boom  (TM  5- 3810-207-10). (4) Remove  the  dipper  handle  as  instructed on figure 85. 121