Paccar Braden PD12C, Инструкция по установке, обслуживанию и ремонту

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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 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 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.
• Th oroughly clean all parts in a good grade of non- fl ammable safety solvent. Wear protective clothing as required.
A ft er 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.
HOIST DISASSEMBLY
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 1 inch pipe in the larger threads of the drain hole.
If necessary, insert a bar into the anchor pocket and man-
ually 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 li ft the
motor o ff the hoist. Remove and discard the O-ring in-
stalled on the pilot of the motor.
5. Tag and remove the hoses and fi ttings from the brake cyl-
inder release port.
6. Remove the brake clutch assembly from the motor sup-
port. Refer to “Brake Clutch Service” for additional infor-
mation.
7. Remove the motor support capscrews and install two
(2) capscrews and a short piece of chain into the motor
mounting bolt holes. Using the chain as a handle, li ft the
motor support out of the brake cylinder being careful to
avoid damaging the sealing surfaces. Remove and discard
the O-ring and backup ring from the motor support. Re-
fer to “Motor Support-Brake Cylinder Service” for addi-
tional information. Note the location of the brake release
port in relation to hoist prior to removing the brake cyl-
inder