Hoist Disassembly - BRADEN PD12C Series Installation Maintenance And Service Manual

DISASSEMBLY OF HOIST
SERVICE PRECAUTIONS
• Before any part is removed from the hoist, all service instructions should be read and understood.
• Work in a clean, dust free area as cleanliness is of utmost importance when servicing hydraulic equipment.
• Inspect all replacement parts, prior to installation, to detect any damage which might have occurred in ship-
ment.
• Use only genuine BRADEN replacement parts for optimum results. Never reuse expendable parts such as oil
seals and O-rings.
• Inspect all machined surfaces for excessive wear or damage . . . before reassembly operations are begun.
• Lubricate all O-rings and oil seals with gear oil prior to installation.
• Use a sealing compound on the outside surface of oil seals and a light coat of thread sealing compound on
pipe threads. Avoid getting thread compound inside parts or passages which conduct oil.
• Thoroughly clean all parts in a good grade of non-fl ammable safety solvent. Wear protective clothing as re-
quired.
After troubleshooting the hoist and its hydraulic system as covered in the "Troubleshooting" section, and the prob-
lem is determined to be in the hoist, use the following procedure to disassemble the hoist.
1. Remove the wire rope from the cable drum and
align the drain hole in the drum with a hole in the
support side plate before removing the hoses and
mounting bolts. After the hoist is removed from its
mounting, thoroughly clean the outside surfaces. To
drain the oil, install a short piece of 1 inch pipe in the
larger threads of the drain hole. If necessary, insert
a bar into the anchor pocket and manually rotate the
drum in the direction to hoist a load until the drain
holes are aligned.
2. Use a 5/16 inch Allen wrench to remove the drain
plug through the pipe.
3. Begin disassembly by removing the oil level plug
or sight glass and standing the hoist on the bearing
support end. Tag and remove the hydraulic hoses
that connect the brake valve and manifold to the
brake cylinder.
4. Remove the capscrews securing the motor, and lift
the motor off the hoist. Remove and discard the O-
ring installed on the pilot of the motor.
5. Tag and remove the hoses and fi ttings from the
brake cylinder release port.
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