Table Of Contents - Hitachi DH 20PB Technical Data And Service Manual

1. PRODUCT NAME ...........................................................................................................................1
2. MARKETING OBJECTIVE .............................................................................................................1
3. APPLICATIONS ..............................................................................................................................1
4. SELLING POINTS ..........................................................................................................................2
4-1. Selling Point Descriptions .............................................................................................................. 2
5. SPECIFICATIONS ..........................................................................................................................3
5-1. Specifications ................................................................................................................................. 3
5-2. Optional Accessories ..................................................................................................................... 4
6. COMPARISONS WITH SIMILAR PRODUCTS ..............................................................................9
6-1. Specification Comparisons ............................................................................................................ 9
6-2. Drilling Speed Comparisons .......................................................................................................... 9
7. PRECAUTIONS IN SALES PROMOTION ...................................................................................10
7-1. Handling Instructions ................................................................................................................... 10
8. REFERENCE MATERIAL .............................................................................................................10
8-1. Lubrication ................................................................................................................................... 10
8-2. Tool Structure ............................................................................................................................... 10
8-3. "Rotation Only" and "Rotation + Striking" Changeover Mechanism ............................................ 13
8-4. "Rotation Only" (no striking) ......................................................................................................... 14
8-5. Drill Bits ........................................................................................................................................ 15
8-6. Chuck Section .............................................................................................................................. 16
8-7. Dust Collector (B) ........................................................................................................................ 16
9. PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY ..........................................................18
9-1. Disassembly ................................................................................................................................ 18
9-2. Reassembly ................................................................................................................................. 20
9-3. Lubrication ................................................................................................................................... 20
9-4. Tightening Torque ........................................................................................................................ 20
9-5. Wiring Diagram ............................................................................................................................ 20
9-6. Internal Wire Arrangement and Wiring Work ............................................................................... 21
9-7.Insulation Tests ............................................................................................................................. 22
9-8.No-load Current Values ................................................................................................................ 22
10. STANDARD REPAIR TIME (UNIT) SCHEDULES .....................................................................23
Assembly Diagram for DH 20PB
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