Blue Diamond 159010, Operation And Maintenance Manual

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6.6 Replace Cutter Heads
6.6.1 Remove Cutter Heads
1. Remove grinder from hydraulic excavator and place on a level work area with
sufficient bearing strength.
2. Secure grinder against failing using suitable lifting equipment and suspend on a
crane. During this operation always keep weight in mind.
3. Lifting equipment must be kept tight.
4. Loosen cutter head threaded connections.
5. Screw in lifting bolts. Screwing in lifting bolts causes cutter heads to separate from
drive shaft.
6. The cutter head, once loosened from the drive shaft, must be secured against rocking
movements by the second person.
7. Carefully lift cutter head away from drive shaft and set down.
8. Remove clamping sleeves in drive shaft using special extractors.
6.6.2 Install Cutter Heads
1. Lay grinder with disassembled cutter heads on side using an appropriately weight-
rated lifting device.
2. Lift cutter head using suitable weight-rated lifting equipment.
3. Carefully set cutter head on drive shaft.
4. Insert clamping sleeves with opening (slit) opposite turning direction of cutter head.
5. Drive positioned clamping sleeves with mandrel until flush with bearing surface.
6. Insert special washers.
7. Apply thread locking compound to bolt threads. Install bolts.
8. Install disassembly screws without thread locking compound.
9. Torque bolts in a diagonal sequence.
Note: Refer to Torque Tables in the back of this manual.
10. Install bits.
6.7 Pedestal (If Equipped)
6.7.1 Disassemble Pedestal
1. Loosen screw connection from bolt adapter or quick coupler.
2. Lift bolt adapter or quick coupler off rock and concrete cutting head with
suitable lifting equipment.
3. Attach lifting equipment to pedestal and put slight strain on line.
Blue Diamond Attachments® 35