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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 because 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 shipment.
• 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 nonflammable safety solvent. Wear protective clothing as required.
After troubleshooting the hoist and its hydraulic system as covered in the “Troubleshooting” section, and the problem is deter-
mined 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. Af-
ter the hoist is removed from its mounting, thoroughly
clean the outside surfaces. To drain the oil, install a short
piece of one-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 standing the hoist on the bearing-
support end. Tag and remove the hydraulic hoses that
connect the brake valve now set inward to the brake cyl-
inder, manifold, and motor.
4. Pivot the needle valve and remove the brake valve to ac-
cess the top motor bolt.
5. Remove the capscrews securing the motor, and lift the
motor off the hoist. Remove and discard the O-ring in-
stalled on the pilot of the motor.
6. Remove the brake clutch assembly from the motor sup-
port. Refer to “Brake Clutch Service” for additional infor-
mation.
7. Remove the brake cylinder capscrews and install two
capscrews and a short piece of chain into the motor
mounting bolt holes. Using the chain as a handle, lift the
brake cylinder out of the drum and base, being careful
to avoid damaging the sealing or bearing surfaces. Refer
to “Motor Support — Brake Cylinder Service” for addi-
tional information.
HOIST DISASSEMBLY
