CHAPTER 6
CRANE SHOVEL FRONT END ATTACHMENT REPAIR INSTRUCTIONS
Section I. SHIPPER SHAFT ASSEMBLY, BOOM SHEAVES AND PULLEY
b. Disassembly. Disassemble
the shipper shaft
170. General
assembly as illustrated on figure 47.
The shaft and sheave bushings are located on the
shovel boom. The shipper shaft is mounted through the
172. Shipper Shaft Assembly Cleaning,
shovel boom, which operates the dipper handle by
means of a rack which is welded to the dipper handle.
Inspection, and Repair
a. Cleaning. Clean the bushings with an approved
171. Shipper Shaft Assembly Removal and
cleaning solvent. Dry thoroughly.
b. Inspection and Repair. Inspect the bushings for
Disassembly
a. Removal.
scoring, pitting, excessive wear, or other damage.
Replace defective bushings as necessary.
(1) Remove the dipper handle (TM 5 3810-
207-20).
(2) Remove the dipper trip assembly (TM 5-
173. Shipper Shaft Assembly Reassembly
3810-207-20).
and Installation
(3) Remove the shipper shaft assembly as
a. Reassembly. Reassemble the shipper shaft
instructed on figure 46.
assembly as illustrated on figure 47.
b. Installation.
(1) Install the shipper shaft assembly as
illustrated on figure 46.
(2) Install dipper trip assembly (TM 5-3810-
207-20).
(3) Install the dipper handle (TM 5-3810-207-
20).
174. Bail Block Sheave Bushing Removal
a. Remove the bail block sheave (TM 5-3810-207-
20).
b. Using a suitable press, remove the bushing from
the bail block sheave.
175. Bail Block Sheave Bushing Cleaning,
Inspection, and Repair
a. Cleaning. Clean the bushings with an approved
cleaning solvent. Dry thoroughly.
b. Inspection and Repair. Inspect the bushings for
scoring, pitting, excessive wear, and other damage.
Figure 46. Shipper shaft assembly, removal and
Replace defective bushings as necessary.
installation.
TAGO 5030A
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